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llvm-mirror/unittests/Support/CommandLineTest.cpp
Mehdi Amini 7d809bb14e Use ManagedStatic and lazy initialization of cl::opt in libSupport to make it free of global initializer 
We can build it with -Werror=global-constructors now. This helps
in situation where libSupport is embedded as a shared library,
potential with dlopen/dlclose scenario, and when command-line
parsing or other facilities may not be involved. Avoiding the
implicit construction of these cl::opt can avoid double-registration
issues and other kind of behavior.

Reviewed By: lattner, jpienaar

Differential Revision: https://reviews.llvm.org/D105959
2021-07-16 07:38:16 +00:00

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//===- llvm/unittest/Support/CommandLineTest.cpp - CommandLine tests ------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/CommandLine.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Config/config.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/StringSaver.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Testing/Support/SupportHelpers.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <fstream>
#include <stdlib.h>
#include <string>
#include <tuple>
using namespace llvm;
using llvm::unittest::TempDir;
using llvm::unittest::TempFile;
namespace {
MATCHER(StringEquality, "Checks if two char* are equal as strings") {
return std::string(std::get<0>(arg)) == std::string(std::get<1>(arg));
}
class TempEnvVar {
public:
TempEnvVar(const char *name, const char *value)
: name(name) {
const char *old_value = getenv(name);
EXPECT_EQ(nullptr, old_value) << old_value;
#if HAVE_SETENV
setenv(name, value, true);
#endif
}
~TempEnvVar() {
#if HAVE_SETENV
// Assume setenv and unsetenv come together.
unsetenv(name);
#else
(void)name; // Suppress -Wunused-private-field.
#endif
}
private:
const char *const name;
};
template <typename T, typename Base = cl::opt<T>>
class StackOption : public Base {
public:
template <class... Ts>
explicit StackOption(Ts &&... Ms) : Base(std::forward<Ts>(Ms)...) {}
~StackOption() override { this->removeArgument(); }
template <class DT> StackOption<T> &operator=(const DT &V) {
Base::operator=(V);
return *this;
}
};
class StackSubCommand : public cl::SubCommand {
public:
StackSubCommand(StringRef Name,
StringRef Description = StringRef())
: SubCommand(Name, Description) {}
StackSubCommand() : SubCommand() {}
~StackSubCommand() { unregisterSubCommand(); }
};
cl::OptionCategory TestCategory("Test Options", "Description");
TEST(CommandLineTest, ModifyExisitingOption) {
StackOption<int> TestOption("test-option", cl::desc("old description"));
static const char Description[] = "New description";
static const char ArgString[] = "new-test-option";
static const char ValueString[] = "Integer";
StringMap<cl::Option *> &Map =
cl::getRegisteredOptions(*cl::TopLevelSubCommand);
ASSERT_TRUE(Map.count("test-option") == 1) <<
"Could not find option in map.";
cl::Option *Retrieved = Map["test-option"];
ASSERT_EQ(&TestOption, Retrieved) << "Retrieved wrong option.";
ASSERT_NE(Retrieved->Categories.end(),
find_if(Retrieved->Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &cl::getGeneralCategory();
}))
<< "Incorrect default option category.";
Retrieved->addCategory(TestCategory);
ASSERT_NE(Retrieved->Categories.end(),
find_if(Retrieved->Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &TestCategory;
}))
<< "Failed to modify option's option category.";
Retrieved->setDescription(Description);
ASSERT_STREQ(Retrieved->HelpStr.data(), Description)
<< "Changing option description failed.";
Retrieved->setArgStr(ArgString);
ASSERT_STREQ(ArgString, Retrieved->ArgStr.data())
<< "Failed to modify option's Argument string.";
Retrieved->setValueStr(ValueString);
ASSERT_STREQ(Retrieved->ValueStr.data(), ValueString)
<< "Failed to modify option's Value string.";
Retrieved->setHiddenFlag(cl::Hidden);
ASSERT_EQ(cl::Hidden, TestOption.getOptionHiddenFlag()) <<
"Failed to modify option's hidden flag.";
}
TEST(CommandLineTest, UseOptionCategory) {
StackOption<int> TestOption2("test-option", cl::cat(TestCategory));
ASSERT_NE(TestOption2.Categories.end(),
find_if(TestOption2.Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &TestCategory;
}))
<< "Failed to assign Option Category.";
}
TEST(CommandLineTest, UseMultipleCategories) {
StackOption<int> TestOption2("test-option2", cl::cat(TestCategory),
cl::cat(cl::getGeneralCategory()),
cl::cat(cl::getGeneralCategory()));
// Make sure cl::getGeneralCategory() wasn't added twice.
ASSERT_EQ(TestOption2.Categories.size(), 2U);
ASSERT_NE(TestOption2.Categories.end(),
find_if(TestOption2.Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &TestCategory;
}))
<< "Failed to assign Option Category.";
ASSERT_NE(TestOption2.Categories.end(),
find_if(TestOption2.Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &cl::getGeneralCategory();
}))
<< "Failed to assign General Category.";
cl::OptionCategory AnotherCategory("Additional test Options", "Description");
StackOption<int> TestOption("test-option", cl::cat(TestCategory),
cl::cat(AnotherCategory));
ASSERT_EQ(TestOption.Categories.end(),
find_if(TestOption.Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &cl::getGeneralCategory();
}))
<< "Failed to remove General Category.";
ASSERT_NE(TestOption.Categories.end(),
find_if(TestOption.Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &TestCategory;
}))
<< "Failed to assign Option Category.";
ASSERT_NE(TestOption.Categories.end(),
find_if(TestOption.Categories,
[&](const llvm::cl::OptionCategory *Cat) {
return Cat == &AnotherCategory;
}))
<< "Failed to assign Another Category.";
}
typedef void ParserFunction(StringRef Source, StringSaver &Saver,
SmallVectorImpl<const char *> &NewArgv,
bool MarkEOLs);
void testCommandLineTokenizer(ParserFunction *parse, StringRef Input,
ArrayRef<const char *> Output,
bool MarkEOLs = false) {
SmallVector<const char *, 0> Actual;
BumpPtrAllocator A;
StringSaver Saver(A);
parse(Input, Saver, Actual, MarkEOLs);
EXPECT_EQ(Output.size(), Actual.size());
for (unsigned I = 0, E = Actual.size(); I != E; ++I) {
if (I < Output.size()) {
EXPECT_STREQ(Output[I], Actual[I]);
}
}
}
TEST(CommandLineTest, TokenizeGNUCommandLine) {
const char Input[] =
"foo\\ bar \"foo bar\" \'foo bar\' 'foo\\\\bar' -DFOO=bar\\(\\) "
"foo\"bar\"baz C:\\\\src\\\\foo.cpp \"C:\\src\\foo.cpp\"";
const char *const Output[] = {
"foo bar", "foo bar", "foo bar", "foo\\bar",
"-DFOO=bar()", "foobarbaz", "C:\\src\\foo.cpp", "C:srcfoo.cpp"};
testCommandLineTokenizer(cl::TokenizeGNUCommandLine, Input, Output);
}
TEST(CommandLineTest, TokenizeWindowsCommandLine1) {
const char Input[] =
R"(a\b c\\d e\\"f g" h\"i j\\\"k "lmn" o pqr "st \"u" \v)";
const char *const Output[] = { "a\\b", "c\\\\d", "e\\f g", "h\"i", "j\\\"k",
"lmn", "o", "pqr", "st \"u", "\\v" };
testCommandLineTokenizer(cl::TokenizeWindowsCommandLine, Input, Output);
}
TEST(CommandLineTest, TokenizeWindowsCommandLine2) {
const char Input[] = "clang -c -DFOO=\"\"\"ABC\"\"\" x.cpp";
const char *const Output[] = { "clang", "-c", "-DFOO=\"ABC\"", "x.cpp"};
testCommandLineTokenizer(cl::TokenizeWindowsCommandLine, Input, Output);
}
TEST(CommandLineTest, TokenizeWindowsCommandLineQuotedLastArgument) {
const char Input1[] = R"(a b c d "")";
const char *const Output1[] = {"a", "b", "c", "d", ""};
testCommandLineTokenizer(cl::TokenizeWindowsCommandLine, Input1, Output1);
const char Input2[] = R"(a b c d ")";
const char *const Output2[] = {"a", "b", "c", "d"};
testCommandLineTokenizer(cl::TokenizeWindowsCommandLine, Input2, Output2);
}
TEST(CommandLineTest, TokenizeAndMarkEOLs) {
// Clang uses EOL marking in response files to support options that consume
// the rest of the arguments on the current line, but do not consume arguments
// from subsequent lines. For example, given these rsp files contents:
// /c /Zi /O2
// /Oy- /link /debug /opt:ref
// /Zc:ThreadsafeStatics-
//
// clang-cl needs to treat "/debug /opt:ref" as linker flags, and everything
// else as compiler flags. The tokenizer inserts nullptr sentinels into the
// output so that clang-cl can find the end of the current line.
const char Input[] = "clang -Xclang foo\n\nfoo\"bar\"baz\n x.cpp\n";
const char *const Output[] = {"clang", "-Xclang", "foo",
nullptr, nullptr, "foobarbaz",
nullptr, "x.cpp", nullptr};
testCommandLineTokenizer(cl::TokenizeWindowsCommandLine, Input, Output,
/*MarkEOLs=*/true);
testCommandLineTokenizer(cl::TokenizeGNUCommandLine, Input, Output,
/*MarkEOLs=*/true);
}
TEST(CommandLineTest, TokenizeConfigFile1) {
const char *Input = "\\";
const char *const Output[] = { "\\" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile2) {
const char *Input = "\\abc";
const char *const Output[] = { "abc" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile3) {
const char *Input = "abc\\";
const char *const Output[] = { "abc\\" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile4) {
const char *Input = "abc\\\n123";
const char *const Output[] = { "abc123" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile5) {
const char *Input = "abc\\\r\n123";
const char *const Output[] = { "abc123" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile6) {
const char *Input = "abc\\\n";
const char *const Output[] = { "abc" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile7) {
const char *Input = "abc\\\r\n";
const char *const Output[] = { "abc" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile8) {
SmallVector<const char *, 0> Actual;
BumpPtrAllocator A;
StringSaver Saver(A);
cl::tokenizeConfigFile("\\\n", Saver, Actual, /*MarkEOLs=*/false);
EXPECT_TRUE(Actual.empty());
}
TEST(CommandLineTest, TokenizeConfigFile9) {
SmallVector<const char *, 0> Actual;
BumpPtrAllocator A;
StringSaver Saver(A);
cl::tokenizeConfigFile("\\\r\n", Saver, Actual, /*MarkEOLs=*/false);
EXPECT_TRUE(Actual.empty());
}
TEST(CommandLineTest, TokenizeConfigFile10) {
const char *Input = "\\\nabc";
const char *const Output[] = { "abc" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, TokenizeConfigFile11) {
const char *Input = "\\\r\nabc";
const char *const Output[] = { "abc" };
testCommandLineTokenizer(cl::tokenizeConfigFile, Input, Output);
}
TEST(CommandLineTest, AliasesWithArguments) {
static const size_t ARGC = 3;
const char *const Inputs[][ARGC] = {
{ "-tool", "-actual=x", "-extra" },
{ "-tool", "-actual", "x" },
{ "-tool", "-alias=x", "-extra" },
{ "-tool", "-alias", "x" }
};
for (size_t i = 0, e = array_lengthof(Inputs); i < e; ++i) {
StackOption<std::string> Actual("actual");
StackOption<bool> Extra("extra");
StackOption<std::string> Input(cl::Positional);
cl::alias Alias("alias", llvm::cl::aliasopt(Actual));
cl::ParseCommandLineOptions(ARGC, Inputs[i]);
EXPECT_EQ("x", Actual);
EXPECT_EQ(0, Input.getNumOccurrences());
Alias.removeArgument();
}
}
void testAliasRequired(int argc, const char *const *argv) {
StackOption<std::string> Option("option", cl::Required);
cl::alias Alias("o", llvm::cl::aliasopt(Option));
cl::ParseCommandLineOptions(argc, argv);
EXPECT_EQ("x", Option);
EXPECT_EQ(1, Option.getNumOccurrences());
Alias.removeArgument();
}
TEST(CommandLineTest, AliasRequired) {
const char *opts1[] = { "-tool", "-option=x" };
const char *opts2[] = { "-tool", "-o", "x" };
testAliasRequired(array_lengthof(opts1), opts1);
testAliasRequired(array_lengthof(opts2), opts2);
}
TEST(CommandLineTest, HideUnrelatedOptions) {
StackOption<int> TestOption1("hide-option-1");
StackOption<int> TestOption2("hide-option-2", cl::cat(TestCategory));
cl::HideUnrelatedOptions(TestCategory);
ASSERT_EQ(cl::ReallyHidden, TestOption1.getOptionHiddenFlag())
<< "Failed to hide extra option.";
ASSERT_EQ(cl::NotHidden, TestOption2.getOptionHiddenFlag())
<< "Hid extra option that should be visable.";
StringMap<cl::Option *> &Map =
cl::getRegisteredOptions(*cl::TopLevelSubCommand);
ASSERT_EQ(cl::NotHidden, Map["help"]->getOptionHiddenFlag())
<< "Hid default option that should be visable.";
}
cl::OptionCategory TestCategory2("Test Options set 2", "Description");
TEST(CommandLineTest, HideUnrelatedOptionsMulti) {
StackOption<int> TestOption1("multi-hide-option-1");
StackOption<int> TestOption2("multi-hide-option-2", cl::cat(TestCategory));
StackOption<int> TestOption3("multi-hide-option-3", cl::cat(TestCategory2));
const cl::OptionCategory *VisibleCategories[] = {&TestCategory,
&TestCategory2};
cl::HideUnrelatedOptions(makeArrayRef(VisibleCategories));
ASSERT_EQ(cl::ReallyHidden, TestOption1.getOptionHiddenFlag())
<< "Failed to hide extra option.";
ASSERT_EQ(cl::NotHidden, TestOption2.getOptionHiddenFlag())
<< "Hid extra option that should be visable.";
ASSERT_EQ(cl::NotHidden, TestOption3.getOptionHiddenFlag())
<< "Hid extra option that should be visable.";
StringMap<cl::Option *> &Map =
cl::getRegisteredOptions(*cl::TopLevelSubCommand);
ASSERT_EQ(cl::NotHidden, Map["help"]->getOptionHiddenFlag())
<< "Hid default option that should be visable.";
}
TEST(CommandLineTest, SetValueInSubcategories) {
cl::ResetCommandLineParser();
StackSubCommand SC1("sc1", "First subcommand");
StackSubCommand SC2("sc2", "Second subcommand");
StackOption<bool> TopLevelOpt("top-level", cl::init(false));
StackOption<bool> SC1Opt("sc1", cl::sub(SC1), cl::init(false));
StackOption<bool> SC2Opt("sc2", cl::sub(SC2), cl::init(false));
EXPECT_FALSE(TopLevelOpt);
EXPECT_FALSE(SC1Opt);
EXPECT_FALSE(SC2Opt);
const char *args[] = {"prog", "-top-level"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(TopLevelOpt);
EXPECT_FALSE(SC1Opt);
EXPECT_FALSE(SC2Opt);
TopLevelOpt = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(TopLevelOpt);
EXPECT_FALSE(SC1Opt);
EXPECT_FALSE(SC2Opt);
const char *args2[] = {"prog", "sc1", "-sc1"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args2, StringRef(), &llvm::nulls()));
EXPECT_FALSE(TopLevelOpt);
EXPECT_TRUE(SC1Opt);
EXPECT_FALSE(SC2Opt);
SC1Opt = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(TopLevelOpt);
EXPECT_FALSE(SC1Opt);
EXPECT_FALSE(SC2Opt);
const char *args3[] = {"prog", "sc2", "-sc2"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args3, StringRef(), &llvm::nulls()));
EXPECT_FALSE(TopLevelOpt);
EXPECT_FALSE(SC1Opt);
EXPECT_TRUE(SC2Opt);
}
TEST(CommandLineTest, LookupFailsInWrongSubCommand) {
cl::ResetCommandLineParser();
StackSubCommand SC1("sc1", "First subcommand");
StackSubCommand SC2("sc2", "Second subcommand");
StackOption<bool> SC1Opt("sc1", cl::sub(SC1), cl::init(false));
StackOption<bool> SC2Opt("sc2", cl::sub(SC2), cl::init(false));
std::string Errs;
raw_string_ostream OS(Errs);
const char *args[] = {"prog", "sc1", "-sc2"};
EXPECT_FALSE(cl::ParseCommandLineOptions(3, args, StringRef(), &OS));
OS.flush();
EXPECT_FALSE(Errs.empty());
}
TEST(CommandLineTest, AddToAllSubCommands) {
cl::ResetCommandLineParser();
StackSubCommand SC1("sc1", "First subcommand");
StackOption<bool> AllOpt("everywhere", cl::sub(*cl::AllSubCommands),
cl::init(false));
StackSubCommand SC2("sc2", "Second subcommand");
const char *args[] = {"prog", "-everywhere"};
const char *args2[] = {"prog", "sc1", "-everywhere"};
const char *args3[] = {"prog", "sc2", "-everywhere"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_FALSE(AllOpt);
EXPECT_TRUE(cl::ParseCommandLineOptions(2, args, StringRef(), &OS));
EXPECT_TRUE(AllOpt);
AllOpt = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(AllOpt);
EXPECT_TRUE(cl::ParseCommandLineOptions(3, args2, StringRef(), &OS));
EXPECT_TRUE(AllOpt);
AllOpt = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(AllOpt);
EXPECT_TRUE(cl::ParseCommandLineOptions(3, args3, StringRef(), &OS));
EXPECT_TRUE(AllOpt);
// Since all parsing succeeded, the error message should be empty.
OS.flush();
EXPECT_TRUE(Errs.empty());
}
TEST(CommandLineTest, ReparseCommandLineOptions) {
cl::ResetCommandLineParser();
StackOption<bool> TopLevelOpt("top-level", cl::sub(*cl::TopLevelSubCommand),
cl::init(false));
const char *args[] = {"prog", "-top-level"};
EXPECT_FALSE(TopLevelOpt);
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(TopLevelOpt);
TopLevelOpt = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(TopLevelOpt);
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(TopLevelOpt);
}
TEST(CommandLineTest, RemoveFromRegularSubCommand) {
cl::ResetCommandLineParser();
StackSubCommand SC("sc", "Subcommand");
StackOption<bool> RemoveOption("remove-option", cl::sub(SC), cl::init(false));
StackOption<bool> KeepOption("keep-option", cl::sub(SC), cl::init(false));
const char *args[] = {"prog", "sc", "-remove-option"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_FALSE(RemoveOption);
EXPECT_TRUE(cl::ParseCommandLineOptions(3, args, StringRef(), &OS));
EXPECT_TRUE(RemoveOption);
OS.flush();
EXPECT_TRUE(Errs.empty());
RemoveOption.removeArgument();
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(cl::ParseCommandLineOptions(3, args, StringRef(), &OS));
OS.flush();
EXPECT_FALSE(Errs.empty());
}
TEST(CommandLineTest, RemoveFromTopLevelSubCommand) {
cl::ResetCommandLineParser();
StackOption<bool> TopLevelRemove(
"top-level-remove", cl::sub(*cl::TopLevelSubCommand), cl::init(false));
StackOption<bool> TopLevelKeep(
"top-level-keep", cl::sub(*cl::TopLevelSubCommand), cl::init(false));
const char *args[] = {"prog", "-top-level-remove"};
EXPECT_FALSE(TopLevelRemove);
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(TopLevelRemove);
TopLevelRemove.removeArgument();
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
}
TEST(CommandLineTest, RemoveFromAllSubCommands) {
cl::ResetCommandLineParser();
StackSubCommand SC1("sc1", "First Subcommand");
StackSubCommand SC2("sc2", "Second Subcommand");
StackOption<bool> RemoveOption("remove-option", cl::sub(*cl::AllSubCommands),
cl::init(false));
StackOption<bool> KeepOption("keep-option", cl::sub(*cl::AllSubCommands),
cl::init(false));
const char *args0[] = {"prog", "-remove-option"};
const char *args1[] = {"prog", "sc1", "-remove-option"};
const char *args2[] = {"prog", "sc2", "-remove-option"};
// It should work for all subcommands including the top-level.
EXPECT_FALSE(RemoveOption);
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args0, StringRef(), &llvm::nulls()));
EXPECT_TRUE(RemoveOption);
RemoveOption = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(RemoveOption);
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args1, StringRef(), &llvm::nulls()));
EXPECT_TRUE(RemoveOption);
RemoveOption = false;
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(RemoveOption);
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args2, StringRef(), &llvm::nulls()));
EXPECT_TRUE(RemoveOption);
RemoveOption.removeArgument();
// It should not work for any subcommands including the top-level.
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(
cl::ParseCommandLineOptions(2, args0, StringRef(), &llvm::nulls()));
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(
cl::ParseCommandLineOptions(3, args1, StringRef(), &llvm::nulls()));
cl::ResetAllOptionOccurrences();
EXPECT_FALSE(
cl::ParseCommandLineOptions(3, args2, StringRef(), &llvm::nulls()));
}
TEST(CommandLineTest, GetRegisteredSubcommands) {
cl::ResetCommandLineParser();
StackSubCommand SC1("sc1", "First Subcommand");
StackOption<bool> Opt1("opt1", cl::sub(SC1), cl::init(false));
StackSubCommand SC2("sc2", "Second subcommand");
StackOption<bool> Opt2("opt2", cl::sub(SC2), cl::init(false));
const char *args0[] = {"prog", "sc1"};
const char *args1[] = {"prog", "sc2"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args0, StringRef(), &llvm::nulls()));
EXPECT_FALSE(Opt1);
EXPECT_FALSE(Opt2);
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
EXPECT_EQ("sc1", S->getName());
}
}
cl::ResetAllOptionOccurrences();
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args1, StringRef(), &llvm::nulls()));
EXPECT_FALSE(Opt1);
EXPECT_FALSE(Opt2);
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
EXPECT_EQ("sc2", S->getName());
}
}
}
TEST(CommandLineTest, DefaultOptions) {
cl::ResetCommandLineParser();
StackOption<std::string> Bar("bar", cl::sub(*cl::AllSubCommands),
cl::DefaultOption);
StackOption<std::string, cl::alias> Bar_Alias(
"b", cl::desc("Alias for -bar"), cl::aliasopt(Bar), cl::DefaultOption);
StackOption<bool> Foo("foo", cl::init(false), cl::sub(*cl::AllSubCommands),
cl::DefaultOption);
StackOption<bool, cl::alias> Foo_Alias("f", cl::desc("Alias for -foo"),
cl::aliasopt(Foo), cl::DefaultOption);
StackSubCommand SC1("sc1", "First Subcommand");
// Override "-b" and change type in sc1 SubCommand.
StackOption<bool> SC1_B("b", cl::sub(SC1), cl::init(false));
StackSubCommand SC2("sc2", "Second subcommand");
// Override "-foo" and change type in sc2 SubCommand. Note that this does not
// affect "-f" alias, which continues to work correctly.
StackOption<std::string> SC2_Foo("foo", cl::sub(SC2));
const char *args0[] = {"prog", "-b", "args0 bar string", "-f"};
EXPECT_TRUE(cl::ParseCommandLineOptions(sizeof(args0) / sizeof(char *), args0,
StringRef(), &llvm::nulls()));
EXPECT_TRUE(Bar == "args0 bar string");
EXPECT_TRUE(Foo);
EXPECT_FALSE(SC1_B);
EXPECT_TRUE(SC2_Foo.empty());
cl::ResetAllOptionOccurrences();
const char *args1[] = {"prog", "sc1", "-b", "-bar", "args1 bar string", "-f"};
EXPECT_TRUE(cl::ParseCommandLineOptions(sizeof(args1) / sizeof(char *), args1,
StringRef(), &llvm::nulls()));
EXPECT_TRUE(Bar == "args1 bar string");
EXPECT_TRUE(Foo);
EXPECT_TRUE(SC1_B);
EXPECT_TRUE(SC2_Foo.empty());
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
EXPECT_EQ("sc1", S->getName());
}
}
cl::ResetAllOptionOccurrences();
const char *args2[] = {"prog", "sc2", "-b", "args2 bar string",
"-f", "-foo", "foo string"};
EXPECT_TRUE(cl::ParseCommandLineOptions(sizeof(args2) / sizeof(char *), args2,
StringRef(), &llvm::nulls()));
EXPECT_TRUE(Bar == "args2 bar string");
EXPECT_TRUE(Foo);
EXPECT_FALSE(SC1_B);
EXPECT_TRUE(SC2_Foo == "foo string");
for (auto *S : cl::getRegisteredSubcommands()) {
if (*S) {
EXPECT_EQ("sc2", S->getName());
}
}
cl::ResetCommandLineParser();
}
TEST(CommandLineTest, ArgumentLimit) {
std::string args(32 * 4096, 'a');
EXPECT_FALSE(llvm::sys::commandLineFitsWithinSystemLimits("cl", args.data()));
std::string args2(256, 'a');
EXPECT_TRUE(llvm::sys::commandLineFitsWithinSystemLimits("cl", args2.data()));
if (Triple(sys::getProcessTriple()).isOSWindows()) {
// We use 32000 as a limit for command line length. Program name ('cl'),
// separating spaces and termination null character occupy 5 symbols.
std::string long_arg(32000 - 5, 'b');
EXPECT_TRUE(
llvm::sys::commandLineFitsWithinSystemLimits("cl", long_arg.data()));
long_arg += 'b';
EXPECT_FALSE(
llvm::sys::commandLineFitsWithinSystemLimits("cl", long_arg.data()));
}
}
TEST(CommandLineTest, ResponseFileWindows) {
if (!Triple(sys::getProcessTriple()).isOSWindows())
return;
StackOption<std::string, cl::list<std::string>> InputFilenames(
cl::Positional, cl::desc("<input files>"), cl::ZeroOrMore);
StackOption<bool> TopLevelOpt("top-level", cl::init(false));
// Create response file.
TempFile ResponseFile("resp-", ".txt",
"-top-level\npath\\dir\\file1\npath/dir/file2",
/*Unique*/ true);
llvm::SmallString<128> RspOpt;
RspOpt.append(1, '@');
RspOpt.append(ResponseFile.path());
const char *args[] = {"prog", RspOpt.c_str()};
EXPECT_FALSE(TopLevelOpt);
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(TopLevelOpt);
EXPECT_TRUE(InputFilenames[0] == "path\\dir\\file1");
EXPECT_TRUE(InputFilenames[1] == "path/dir/file2");
}
TEST(CommandLineTest, ResponseFiles) {
vfs::InMemoryFileSystem FS;
#ifdef _WIN32
const char *TestRoot = "C:\\";
#else
const char *TestRoot = "/";
#endif
FS.setCurrentWorkingDirectory(TestRoot);
// Create included response file of first level.
llvm::StringRef IncludedFileName = "resp1";
FS.addFile(IncludedFileName, 0,
llvm::MemoryBuffer::getMemBuffer("-option_1 -option_2\n"
"@incdir/resp2\n"
"-option_3=abcd\n"
"@incdir/resp3\n"
"-option_4=efjk\n"));
// Directory for included file.
llvm::StringRef IncDir = "incdir";
// Create included response file of second level.
llvm::SmallString<128> IncludedFileName2;
llvm::sys::path::append(IncludedFileName2, IncDir, "resp2");
FS.addFile(IncludedFileName2, 0,
MemoryBuffer::getMemBuffer("-option_21 -option_22\n"
"-option_23=abcd\n"));
// Create second included response file of second level.
llvm::SmallString<128> IncludedFileName3;
llvm::sys::path::append(IncludedFileName3, IncDir, "resp3");
FS.addFile(IncludedFileName3, 0,
MemoryBuffer::getMemBuffer("-option_31 -option_32\n"
"-option_33=abcd\n"));
// Prepare 'file' with reference to response file.
SmallString<128> IncRef;
IncRef.append(1, '@');
IncRef.append(IncludedFileName);
llvm::SmallVector<const char *, 4> Argv = {"test/test", "-flag_1",
IncRef.c_str(), "-flag_2"};
// Expand response files.
llvm::BumpPtrAllocator A;
llvm::StringSaver Saver(A);
ASSERT_TRUE(llvm::cl::ExpandResponseFiles(
Saver, llvm::cl::TokenizeGNUCommandLine, Argv, false, true,
/*CurrentDir=*/StringRef(TestRoot), FS));
EXPECT_THAT(Argv, testing::Pointwise(
StringEquality(),
{"test/test", "-flag_1", "-option_1", "-option_2",
"-option_21", "-option_22", "-option_23=abcd",
"-option_3=abcd", "-option_31", "-option_32",
"-option_33=abcd", "-option_4=efjk", "-flag_2"}));
}
TEST(CommandLineTest, RecursiveResponseFiles) {
vfs::InMemoryFileSystem FS;
#ifdef _WIN32
const char *TestRoot = "C:\\";
#else
const char *TestRoot = "/";
#endif
FS.setCurrentWorkingDirectory(TestRoot);
StringRef SelfFilePath = "self.rsp";
std::string SelfFileRef = ("@" + SelfFilePath).str();
StringRef NestedFilePath = "nested.rsp";
std::string NestedFileRef = ("@" + NestedFilePath).str();
StringRef FlagFilePath = "flag.rsp";
std::string FlagFileRef = ("@" + FlagFilePath).str();
std::string SelfFileContents;
raw_string_ostream SelfFile(SelfFileContents);
SelfFile << "-option_1\n";
SelfFile << FlagFileRef << "\n";
SelfFile << NestedFileRef << "\n";
SelfFile << SelfFileRef << "\n";
FS.addFile(SelfFilePath, 0, MemoryBuffer::getMemBuffer(SelfFile.str()));
std::string NestedFileContents;
raw_string_ostream NestedFile(NestedFileContents);
NestedFile << "-option_2\n";
NestedFile << FlagFileRef << "\n";
NestedFile << SelfFileRef << "\n";
NestedFile << NestedFileRef << "\n";
FS.addFile(NestedFilePath, 0, MemoryBuffer::getMemBuffer(NestedFile.str()));
std::string FlagFileContents;
raw_string_ostream FlagFile(FlagFileContents);
FlagFile << "-option_x\n";
FS.addFile(FlagFilePath, 0, MemoryBuffer::getMemBuffer(FlagFile.str()));
// Ensure:
// Recursive expansion terminates
// Recursive files never expand
// Non-recursive repeats are allowed
SmallVector<const char *, 4> Argv = {"test/test", SelfFileRef.c_str(),
"-option_3"};
BumpPtrAllocator A;
StringSaver Saver(A);
#ifdef _WIN32
cl::TokenizerCallback Tokenizer = cl::TokenizeWindowsCommandLine;
#else
cl::TokenizerCallback Tokenizer = cl::TokenizeGNUCommandLine;
#endif
ASSERT_FALSE(cl::ExpandResponseFiles(Saver, Tokenizer, Argv, false, false,
/*CurrentDir=*/llvm::StringRef(TestRoot),
FS));
EXPECT_THAT(Argv,
testing::Pointwise(StringEquality(),
{"test/test", "-option_1", "-option_x",
"-option_2", "-option_x", SelfFileRef.c_str(),
NestedFileRef.c_str(), SelfFileRef.c_str(),
"-option_3"}));
}
TEST(CommandLineTest, ResponseFilesAtArguments) {
vfs::InMemoryFileSystem FS;
#ifdef _WIN32
const char *TestRoot = "C:\\";
#else
const char *TestRoot = "/";
#endif
FS.setCurrentWorkingDirectory(TestRoot);
StringRef ResponseFilePath = "test.rsp";
std::string ResponseFileContents;
raw_string_ostream ResponseFile(ResponseFileContents);
ResponseFile << "-foo" << "\n";
ResponseFile << "-bar" << "\n";
FS.addFile(ResponseFilePath, 0,
MemoryBuffer::getMemBuffer(ResponseFile.str()));
// Ensure we expand rsp files after lots of non-rsp arguments starting with @.
constexpr size_t NON_RSP_AT_ARGS = 64;
SmallVector<const char *, 4> Argv = {"test/test"};
Argv.append(NON_RSP_AT_ARGS, "@non_rsp_at_arg");
std::string ResponseFileRef = ("@" + ResponseFilePath).str();
Argv.push_back(ResponseFileRef.c_str());
BumpPtrAllocator A;
StringSaver Saver(A);
ASSERT_FALSE(cl::ExpandResponseFiles(Saver, cl::TokenizeGNUCommandLine, Argv,
false, false,
/*CurrentDir=*/StringRef(TestRoot), FS));
// ASSERT instead of EXPECT to prevent potential out-of-bounds access.
ASSERT_EQ(Argv.size(), 1 + NON_RSP_AT_ARGS + 2);
size_t i = 0;
EXPECT_STREQ(Argv[i++], "test/test");
for (; i < 1 + NON_RSP_AT_ARGS; ++i)
EXPECT_STREQ(Argv[i], "@non_rsp_at_arg");
EXPECT_STREQ(Argv[i++], "-foo");
EXPECT_STREQ(Argv[i++], "-bar");
}
TEST(CommandLineTest, ResponseFileRelativePath) {
vfs::InMemoryFileSystem FS;
#ifdef _WIN32
const char *TestRoot = "C:\\";
#else
const char *TestRoot = "//net";
#endif
FS.setCurrentWorkingDirectory(TestRoot);
StringRef OuterFile = "dir/outer.rsp";
StringRef OuterFileContents = "@inner.rsp";
FS.addFile(OuterFile, 0, MemoryBuffer::getMemBuffer(OuterFileContents));
StringRef InnerFile = "dir/inner.rsp";
StringRef InnerFileContents = "-flag";
FS.addFile(InnerFile, 0, MemoryBuffer::getMemBuffer(InnerFileContents));
SmallVector<const char *, 2> Argv = {"test/test", "@dir/outer.rsp"};
BumpPtrAllocator A;
StringSaver Saver(A);
ASSERT_TRUE(cl::ExpandResponseFiles(Saver, cl::TokenizeGNUCommandLine, Argv,
false, true,
/*CurrentDir=*/StringRef(TestRoot), FS));
EXPECT_THAT(Argv,
testing::Pointwise(StringEquality(), {"test/test", "-flag"}));
}
TEST(CommandLineTest, ResponseFileEOLs) {
vfs::InMemoryFileSystem FS;
#ifdef _WIN32
const char *TestRoot = "C:\\";
#else
const char *TestRoot = "//net";
#endif
FS.setCurrentWorkingDirectory(TestRoot);
FS.addFile("eols.rsp", 0,
MemoryBuffer::getMemBuffer("-Xclang -Wno-whatever\n input.cpp"));
SmallVector<const char *, 2> Argv = {"clang", "@eols.rsp"};
BumpPtrAllocator A;
StringSaver Saver(A);
ASSERT_TRUE(cl::ExpandResponseFiles(Saver, cl::TokenizeWindowsCommandLine,
Argv, true, true,
/*CurrentDir=*/StringRef(TestRoot), FS));
const char *Expected[] = {"clang", "-Xclang", "-Wno-whatever", nullptr,
"input.cpp"};
ASSERT_EQ(array_lengthof(Expected), Argv.size());
for (size_t I = 0, E = array_lengthof(Expected); I < E; ++I) {
if (Expected[I] == nullptr) {
ASSERT_EQ(Argv[I], nullptr);
} else {
ASSERT_STREQ(Expected[I], Argv[I]);
}
}
}
TEST(CommandLineTest, SetDefautValue) {
cl::ResetCommandLineParser();
StackOption<std::string> Opt1("opt1", cl::init("true"));
StackOption<bool> Opt2("opt2", cl::init(true));
cl::alias Alias("alias", llvm::cl::aliasopt(Opt2));
StackOption<int> Opt3("opt3", cl::init(3));
const char *args[] = {"prog", "-opt1=false", "-opt2", "-opt3"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(Opt1 == "false");
EXPECT_TRUE(Opt2);
EXPECT_TRUE(Opt3 == 3);
Opt2 = false;
Opt3 = 1;
cl::ResetAllOptionOccurrences();
for (auto &OM : cl::getRegisteredOptions(*cl::TopLevelSubCommand)) {
cl::Option *O = OM.second;
if (O->ArgStr == "opt2") {
continue;
}
O->setDefault();
}
EXPECT_TRUE(Opt1 == "true");
EXPECT_TRUE(Opt2);
EXPECT_TRUE(Opt3 == 3);
Alias.removeArgument();
}
TEST(CommandLineTest, ReadConfigFile) {
llvm::SmallVector<const char *, 1> Argv;
TempDir TestDir("unittest", /*Unique*/ true);
llvm::SmallString<128> TestCfg;
llvm::sys::path::append(TestCfg, TestDir.path(), "foo");
TempFile ConfigFile(TestCfg, "",
"# Comment\n"
"-option_1\n"
"@subconfig\n"
"-option_3=abcd\n"
"-option_4=\\\n"
"cdef\n");
llvm::SmallString<128> TestCfg2;
llvm::sys::path::append(TestCfg2, TestDir.path(), "subconfig");
TempFile ConfigFile2(TestCfg2, "",
"-option_2\n"
"\n"
" # comment\n");
// Make sure the current directory is not the directory where config files
// resides. In this case the code that expands response files will not find
// 'subconfig' unless it resolves nested inclusions relative to the including
// file.
llvm::SmallString<128> CurrDir;
std::error_code EC = llvm::sys::fs::current_path(CurrDir);
EXPECT_TRUE(!EC);
EXPECT_NE(CurrDir.str(), TestDir.path());
llvm::BumpPtrAllocator A;
llvm::StringSaver Saver(A);
bool Result = llvm::cl::readConfigFile(ConfigFile.path(), Saver, Argv);
EXPECT_TRUE(Result);
EXPECT_EQ(Argv.size(), 4U);
EXPECT_STREQ(Argv[0], "-option_1");
EXPECT_STREQ(Argv[1], "-option_2");
EXPECT_STREQ(Argv[2], "-option_3=abcd");
EXPECT_STREQ(Argv[3], "-option_4=cdef");
}
TEST(CommandLineTest, PositionalEatArgsError) {
cl::ResetCommandLineParser();
StackOption<std::string, cl::list<std::string>> PosEatArgs(
"positional-eat-args", cl::Positional, cl::desc("<arguments>..."),
cl::ZeroOrMore, cl::PositionalEatsArgs);
StackOption<std::string, cl::list<std::string>> PosEatArgs2(
"positional-eat-args2", cl::Positional, cl::desc("Some strings"),
cl::ZeroOrMore, cl::PositionalEatsArgs);
const char *args[] = {"prog", "-positional-eat-args=XXXX"};
const char *args2[] = {"prog", "-positional-eat-args=XXXX", "-foo"};
const char *args3[] = {"prog", "-positional-eat-args", "-foo"};
const char *args4[] = {"prog", "-positional-eat-args",
"-foo", "-positional-eat-args2",
"-bar", "foo"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_FALSE(cl::ParseCommandLineOptions(2, args, StringRef(), &OS)); OS.flush();
EXPECT_FALSE(Errs.empty()); Errs.clear();
EXPECT_FALSE(cl::ParseCommandLineOptions(3, args2, StringRef(), &OS)); OS.flush();
EXPECT_FALSE(Errs.empty()); Errs.clear();
EXPECT_TRUE(cl::ParseCommandLineOptions(3, args3, StringRef(), &OS)); OS.flush();
EXPECT_TRUE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
EXPECT_TRUE(cl::ParseCommandLineOptions(6, args4, StringRef(), &OS)); OS.flush();
EXPECT_TRUE(PosEatArgs.size() == 1);
EXPECT_TRUE(PosEatArgs2.size() == 2);
EXPECT_TRUE(Errs.empty());
}
#ifdef _WIN32
TEST(CommandLineTest, GetCommandLineArguments) {
int argc = __argc;
char **argv = __argv;
// GetCommandLineArguments is called in InitLLVM.
llvm::InitLLVM X(argc, argv);
EXPECT_EQ(llvm::sys::path::is_absolute(argv[0]),
llvm::sys::path::is_absolute(__argv[0]));
EXPECT_TRUE(
llvm::sys::path::filename(argv[0]).equals_insensitive("supporttests.exe"))
<< "Filename of test executable is "
<< llvm::sys::path::filename(argv[0]);
}
#endif
class OutputRedirector {
public:
OutputRedirector(int RedirectFD)
: RedirectFD(RedirectFD), OldFD(dup(RedirectFD)) {
if (OldFD == -1 ||
sys::fs::createTemporaryFile("unittest-redirect", "", NewFD,
FilePath) ||
dup2(NewFD, RedirectFD) == -1)
Valid = false;
}
~OutputRedirector() {
dup2(OldFD, RedirectFD);
close(OldFD);
close(NewFD);
}
SmallVector<char, 128> FilePath;
bool Valid = true;
private:
int RedirectFD;
int OldFD;
int NewFD;
};
struct AutoDeleteFile {
SmallVector<char, 128> FilePath;
~AutoDeleteFile() {
if (!FilePath.empty())
sys::fs::remove(std::string(FilePath.data(), FilePath.size()));
}
};
class PrintOptionInfoTest : public ::testing::Test {
public:
// Return std::string because the output of a failing EXPECT check is
// unreadable for StringRef. It also avoids any lifetime issues.
template <typename... Ts> std::string runTest(Ts... OptionAttributes) {
outs().flush(); // flush any output from previous tests
AutoDeleteFile File;
{
OutputRedirector Stdout(fileno(stdout));
if (!Stdout.Valid)
return "";
File.FilePath = Stdout.FilePath;
StackOption<OptionValue> TestOption(Opt, cl::desc(HelpText),
OptionAttributes...);
printOptionInfo(TestOption, 26);
outs().flush();
}
auto Buffer = MemoryBuffer::getFile(File.FilePath);
if (!Buffer)
return "";
return Buffer->get()->getBuffer().str();
}
enum class OptionValue { Val };
const StringRef Opt = "some-option";
const StringRef HelpText = "some help";
private:
// This is a workaround for cl::Option sub-classes having their
// printOptionInfo functions private.
void printOptionInfo(const cl::Option &O, size_t Width) {
O.printOptionInfo(Width);
}
};
TEST_F(PrintOptionInfoTest, PrintOptionInfoValueOptionalWithoutSentinel) {
std::string Output =
runTest(cl::ValueOptional,
cl::values(clEnumValN(OptionValue::Val, "v1", "desc1")));
// clang-format off
EXPECT_EQ(Output, (" --" + Opt + "=<value> - " + HelpText + "\n"
" =v1 - desc1\n")
.str());
// clang-format on
}
TEST_F(PrintOptionInfoTest, PrintOptionInfoValueOptionalWithSentinel) {
std::string Output = runTest(
cl::ValueOptional, cl::values(clEnumValN(OptionValue::Val, "v1", "desc1"),
clEnumValN(OptionValue::Val, "", "")));
// clang-format off
EXPECT_EQ(Output,
(" --" + Opt + " - " + HelpText + "\n"
" --" + Opt + "=<value> - " + HelpText + "\n"
" =v1 - desc1\n")
.str());
// clang-format on
}
TEST_F(PrintOptionInfoTest, PrintOptionInfoValueOptionalWithSentinelWithHelp) {
std::string Output = runTest(
cl::ValueOptional, cl::values(clEnumValN(OptionValue::Val, "v1", "desc1"),
clEnumValN(OptionValue::Val, "", "desc2")));
// clang-format off
EXPECT_EQ(Output, (" --" + Opt + " - " + HelpText + "\n"
" --" + Opt + "=<value> - " + HelpText + "\n"
" =v1 - desc1\n"
" =<empty> - desc2\n")
.str());
// clang-format on
}
TEST_F(PrintOptionInfoTest, PrintOptionInfoValueRequiredWithEmptyValueName) {
std::string Output = runTest(
cl::ValueRequired, cl::values(clEnumValN(OptionValue::Val, "v1", "desc1"),
clEnumValN(OptionValue::Val, "", "")));
// clang-format off
EXPECT_EQ(Output, (" --" + Opt + "=<value> - " + HelpText + "\n"
" =v1 - desc1\n"
" =<empty>\n")
.str());
// clang-format on
}
TEST_F(PrintOptionInfoTest, PrintOptionInfoEmptyValueDescription) {
std::string Output = runTest(
cl::ValueRequired, cl::values(clEnumValN(OptionValue::Val, "v1", "")));
// clang-format off
EXPECT_EQ(Output,
(" --" + Opt + "=<value> - " + HelpText + "\n"
" =v1\n").str());
// clang-format on
}
TEST_F(PrintOptionInfoTest, PrintOptionInfoMultilineValueDescription) {
std::string Output =
runTest(cl::ValueRequired,
cl::values(clEnumValN(OptionValue::Val, "v1",
"This is the first enum value\n"
"which has a really long description\n"
"thus it is multi-line."),
clEnumValN(OptionValue::Val, "",
"This is an unnamed enum value option\n"
"Should be indented as well")));
// clang-format off
EXPECT_EQ(Output,
(" --" + Opt + "=<value> - " + HelpText + "\n"
" =v1 - This is the first enum value\n"
" which has a really long description\n"
" thus it is multi-line.\n"
" =<empty> - This is an unnamed enum value option\n"
" Should be indented as well\n").str());
// clang-format on
}
class GetOptionWidthTest : public ::testing::Test {
public:
enum class OptionValue { Val };
template <typename... Ts>
size_t runTest(StringRef ArgName, Ts... OptionAttributes) {
StackOption<OptionValue> TestOption(ArgName, cl::desc("some help"),
OptionAttributes...);
return getOptionWidth(TestOption);
}
private:
// This is a workaround for cl::Option sub-classes having their
// printOptionInfo
// functions private.
size_t getOptionWidth(const cl::Option &O) { return O.getOptionWidth(); }
};
TEST_F(GetOptionWidthTest, GetOptionWidthArgNameLonger) {
StringRef ArgName("a-long-argument-name");
size_t ExpectedStrSize = (" --" + ArgName + "=<value> - ").str().size();
EXPECT_EQ(
runTest(ArgName, cl::values(clEnumValN(OptionValue::Val, "v", "help"))),
ExpectedStrSize);
}
TEST_F(GetOptionWidthTest, GetOptionWidthFirstOptionNameLonger) {
StringRef OptName("a-long-option-name");
size_t ExpectedStrSize = (" =" + OptName + " - ").str().size();
EXPECT_EQ(
runTest("a", cl::values(clEnumValN(OptionValue::Val, OptName, "help"),
clEnumValN(OptionValue::Val, "b", "help"))),
ExpectedStrSize);
}
TEST_F(GetOptionWidthTest, GetOptionWidthSecondOptionNameLonger) {
StringRef OptName("a-long-option-name");
size_t ExpectedStrSize = (" =" + OptName + " - ").str().size();
EXPECT_EQ(
runTest("a", cl::values(clEnumValN(OptionValue::Val, "b", "help"),
clEnumValN(OptionValue::Val, OptName, "help"))),
ExpectedStrSize);
}
TEST_F(GetOptionWidthTest, GetOptionWidthEmptyOptionNameLonger) {
size_t ExpectedStrSize = StringRef(" =<empty> - ").size();
// The length of a=<value> (including indentation) is actually the same as the
// =<empty> string, so it is impossible to distinguish via testing the case
// where the empty string is picked from where the option name is picked.
EXPECT_EQ(runTest("a", cl::values(clEnumValN(OptionValue::Val, "b", "help"),
clEnumValN(OptionValue::Val, "", "help"))),
ExpectedStrSize);
}
TEST_F(GetOptionWidthTest,
GetOptionWidthValueOptionalEmptyOptionWithNoDescription) {
StringRef ArgName("a");
// The length of a=<value> (including indentation) is actually the same as the
// =<empty> string, so it is impossible to distinguish via testing the case
// where the empty string is ignored from where it is not ignored.
// The dash will not actually be printed, but the space it would take up is
// included to ensure a consistent column width.
size_t ExpectedStrSize = (" -" + ArgName + "=<value> - ").str().size();
EXPECT_EQ(runTest(ArgName, cl::ValueOptional,
cl::values(clEnumValN(OptionValue::Val, "value", "help"),
clEnumValN(OptionValue::Val, "", ""))),
ExpectedStrSize);
}
TEST_F(GetOptionWidthTest,
GetOptionWidthValueRequiredEmptyOptionWithNoDescription) {
// The length of a=<value> (including indentation) is actually the same as the
// =<empty> string, so it is impossible to distinguish via testing the case
// where the empty string is picked from where the option name is picked
size_t ExpectedStrSize = StringRef(" =<empty> - ").size();
EXPECT_EQ(runTest("a", cl::ValueRequired,
cl::values(clEnumValN(OptionValue::Val, "value", "help"),
clEnumValN(OptionValue::Val, "", ""))),
ExpectedStrSize);
}
TEST(CommandLineTest, PrefixOptions) {
cl::ResetCommandLineParser();
StackOption<std::string, cl::list<std::string>> IncludeDirs(
"I", cl::Prefix, cl::desc("Declare an include directory"));
// Test non-prefixed variant works with cl::Prefix options.
EXPECT_TRUE(IncludeDirs.empty());
const char *args[] = {"prog", "-I=/usr/include"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args, StringRef(), &llvm::nulls()));
EXPECT_TRUE(IncludeDirs.size() == 1);
EXPECT_TRUE(IncludeDirs.front().compare("/usr/include") == 0);
IncludeDirs.erase(IncludeDirs.begin());
cl::ResetAllOptionOccurrences();
// Test non-prefixed variant works with cl::Prefix options when value is
// passed in following argument.
EXPECT_TRUE(IncludeDirs.empty());
const char *args2[] = {"prog", "-I", "/usr/include"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args2, StringRef(), &llvm::nulls()));
EXPECT_TRUE(IncludeDirs.size() == 1);
EXPECT_TRUE(IncludeDirs.front().compare("/usr/include") == 0);
IncludeDirs.erase(IncludeDirs.begin());
cl::ResetAllOptionOccurrences();
// Test prefixed variant works with cl::Prefix options.
EXPECT_TRUE(IncludeDirs.empty());
const char *args3[] = {"prog", "-I/usr/include"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args3, StringRef(), &llvm::nulls()));
EXPECT_TRUE(IncludeDirs.size() == 1);
EXPECT_TRUE(IncludeDirs.front().compare("/usr/include") == 0);
StackOption<std::string, cl::list<std::string>> MacroDefs(
"D", cl::AlwaysPrefix, cl::desc("Define a macro"),
cl::value_desc("MACRO[=VALUE]"));
cl::ResetAllOptionOccurrences();
// Test non-prefixed variant does not work with cl::AlwaysPrefix options:
// equal sign is part of the value.
EXPECT_TRUE(MacroDefs.empty());
const char *args4[] = {"prog", "-D=HAVE_FOO"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args4, StringRef(), &llvm::nulls()));
EXPECT_TRUE(MacroDefs.size() == 1);
EXPECT_TRUE(MacroDefs.front().compare("=HAVE_FOO") == 0);
MacroDefs.erase(MacroDefs.begin());
cl::ResetAllOptionOccurrences();
// Test non-prefixed variant does not allow value to be passed in following
// argument with cl::AlwaysPrefix options.
EXPECT_TRUE(MacroDefs.empty());
const char *args5[] = {"prog", "-D", "HAVE_FOO"};
EXPECT_FALSE(
cl::ParseCommandLineOptions(3, args5, StringRef(), &llvm::nulls()));
EXPECT_TRUE(MacroDefs.empty());
cl::ResetAllOptionOccurrences();
// Test prefixed variant works with cl::AlwaysPrefix options.
EXPECT_TRUE(MacroDefs.empty());
const char *args6[] = {"prog", "-DHAVE_FOO"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args6, StringRef(), &llvm::nulls()));
EXPECT_TRUE(MacroDefs.size() == 1);
EXPECT_TRUE(MacroDefs.front().compare("HAVE_FOO") == 0);
}
TEST(CommandLineTest, GroupingWithValue) {
cl::ResetCommandLineParser();
StackOption<bool> OptF("f", cl::Grouping, cl::desc("Some flag"));
StackOption<bool> OptB("b", cl::Grouping, cl::desc("Another flag"));
StackOption<bool> OptD("d", cl::Grouping, cl::ValueDisallowed,
cl::desc("ValueDisallowed option"));
StackOption<std::string> OptV("v", cl::Grouping,
cl::desc("ValueRequired option"));
StackOption<std::string> OptO("o", cl::Grouping, cl::ValueOptional,
cl::desc("ValueOptional option"));
// Should be possible to use an option which requires a value
// at the end of a group.
const char *args1[] = {"prog", "-fv", "val1"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args1, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val1", OptV.c_str());
OptV.clear();
cl::ResetAllOptionOccurrences();
// Should not crash if it is accidentally used elsewhere in the group.
const char *args2[] = {"prog", "-vf", "val2"};
EXPECT_FALSE(
cl::ParseCommandLineOptions(3, args2, StringRef(), &llvm::nulls()));
OptV.clear();
cl::ResetAllOptionOccurrences();
// Should allow the "opt=value" form at the end of the group
const char *args3[] = {"prog", "-fv=val3"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args3, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val3", OptV.c_str());
OptV.clear();
cl::ResetAllOptionOccurrences();
// Should allow assigning a value for a ValueOptional option
// at the end of the group
const char *args4[] = {"prog", "-fo=val4"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args4, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val4", OptO.c_str());
OptO.clear();
cl::ResetAllOptionOccurrences();
// Should assign an empty value if a ValueOptional option is used elsewhere
// in the group.
const char *args5[] = {"prog", "-fob"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args5, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_EQ(1, OptO.getNumOccurrences());
EXPECT_EQ(1, OptB.getNumOccurrences());
EXPECT_TRUE(OptO.empty());
cl::ResetAllOptionOccurrences();
// Should not allow an assignment for a ValueDisallowed option.
const char *args6[] = {"prog", "-fd=false"};
EXPECT_FALSE(
cl::ParseCommandLineOptions(2, args6, StringRef(), &llvm::nulls()));
}
TEST(CommandLineTest, GroupingAndPrefix) {
cl::ResetCommandLineParser();
StackOption<bool> OptF("f", cl::Grouping, cl::desc("Some flag"));
StackOption<bool> OptB("b", cl::Grouping, cl::desc("Another flag"));
StackOption<std::string> OptP("p", cl::Prefix, cl::Grouping,
cl::desc("Prefix and Grouping"));
StackOption<std::string> OptA("a", cl::AlwaysPrefix, cl::Grouping,
cl::desc("AlwaysPrefix and Grouping"));
// Should be possible to use a cl::Prefix option without grouping.
const char *args1[] = {"prog", "-pval1"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args1, StringRef(), &llvm::nulls()));
EXPECT_STREQ("val1", OptP.c_str());
OptP.clear();
cl::ResetAllOptionOccurrences();
// Should be possible to pass a value in a separate argument.
const char *args2[] = {"prog", "-p", "val2"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args2, StringRef(), &llvm::nulls()));
EXPECT_STREQ("val2", OptP.c_str());
OptP.clear();
cl::ResetAllOptionOccurrences();
// The "-opt=value" form should work, too.
const char *args3[] = {"prog", "-p=val3"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args3, StringRef(), &llvm::nulls()));
EXPECT_STREQ("val3", OptP.c_str());
OptP.clear();
cl::ResetAllOptionOccurrences();
// All three previous cases should work the same way if an option with both
// cl::Prefix and cl::Grouping modifiers is used at the end of a group.
const char *args4[] = {"prog", "-fpval4"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args4, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val4", OptP.c_str());
OptP.clear();
cl::ResetAllOptionOccurrences();
const char *args5[] = {"prog", "-fp", "val5"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(3, args5, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val5", OptP.c_str());
OptP.clear();
cl::ResetAllOptionOccurrences();
const char *args6[] = {"prog", "-fp=val6"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args6, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val6", OptP.c_str());
OptP.clear();
cl::ResetAllOptionOccurrences();
// Should assign a value even if the part after a cl::Prefix option is equal
// to the name of another option.
const char *args7[] = {"prog", "-fpb"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args7, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("b", OptP.c_str());
EXPECT_FALSE(OptB);
OptP.clear();
cl::ResetAllOptionOccurrences();
// Should be possible to use a cl::AlwaysPrefix option without grouping.
const char *args8[] = {"prog", "-aval8"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args8, StringRef(), &llvm::nulls()));
EXPECT_STREQ("val8", OptA.c_str());
OptA.clear();
cl::ResetAllOptionOccurrences();
// Should not be possible to pass a value in a separate argument.
const char *args9[] = {"prog", "-a", "val9"};
EXPECT_FALSE(
cl::ParseCommandLineOptions(3, args9, StringRef(), &llvm::nulls()));
cl::ResetAllOptionOccurrences();
// With the "-opt=value" form, the "=" symbol should be preserved.
const char *args10[] = {"prog", "-a=val10"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args10, StringRef(), &llvm::nulls()));
EXPECT_STREQ("=val10", OptA.c_str());
OptA.clear();
cl::ResetAllOptionOccurrences();
// All three previous cases should work the same way if an option with both
// cl::AlwaysPrefix and cl::Grouping modifiers is used at the end of a group.
const char *args11[] = {"prog", "-faval11"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args11, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("val11", OptA.c_str());
OptA.clear();
cl::ResetAllOptionOccurrences();
const char *args12[] = {"prog", "-fa", "val12"};
EXPECT_FALSE(
cl::ParseCommandLineOptions(3, args12, StringRef(), &llvm::nulls()));
cl::ResetAllOptionOccurrences();
const char *args13[] = {"prog", "-fa=val13"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args13, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("=val13", OptA.c_str());
OptA.clear();
cl::ResetAllOptionOccurrences();
// Should assign a value even if the part after a cl::AlwaysPrefix option
// is equal to the name of another option.
const char *args14[] = {"prog", "-fab"};
EXPECT_TRUE(
cl::ParseCommandLineOptions(2, args14, StringRef(), &llvm::nulls()));
EXPECT_TRUE(OptF);
EXPECT_STREQ("b", OptA.c_str());
EXPECT_FALSE(OptB);
OptA.clear();
cl::ResetAllOptionOccurrences();
}
TEST(CommandLineTest, LongOptions) {
cl::ResetCommandLineParser();
StackOption<bool> OptA("a", cl::desc("Some flag"));
StackOption<bool> OptBLong("long-flag", cl::desc("Some long flag"));
StackOption<bool, cl::alias> OptB("b", cl::desc("Alias to --long-flag"),
cl::aliasopt(OptBLong));
StackOption<std::string> OptAB("ab", cl::desc("Another long option"));
std::string Errs;
raw_string_ostream OS(Errs);
const char *args1[] = {"prog", "-a", "-ab", "val1"};
const char *args2[] = {"prog", "-a", "--ab", "val1"};
const char *args3[] = {"prog", "-ab", "--ab", "val1"};
//
// The following tests treat `-` and `--` the same, and always match the
// longest string.
//
EXPECT_TRUE(
cl::ParseCommandLineOptions(4, args1, StringRef(), &OS)); OS.flush();
EXPECT_TRUE(OptA);
EXPECT_FALSE(OptBLong);
EXPECT_STREQ("val1", OptAB.c_str());
EXPECT_TRUE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
EXPECT_TRUE(
cl::ParseCommandLineOptions(4, args2, StringRef(), &OS)); OS.flush();
EXPECT_TRUE(OptA);
EXPECT_FALSE(OptBLong);
EXPECT_STREQ("val1", OptAB.c_str());
EXPECT_TRUE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
// Fails because `-ab` and `--ab` are treated the same and appear more than
// once. Also, `val1` is unexpected.
EXPECT_FALSE(
cl::ParseCommandLineOptions(4, args3, StringRef(), &OS)); OS.flush();
outs()<< Errs << "\n";
EXPECT_FALSE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
//
// The following tests treat `-` and `--` differently, with `-` for short, and
// `--` for long options.
//
// Fails because `-ab` is treated as `-a -b`, so `-a` is seen twice, and
// `val1` is unexpected.
EXPECT_FALSE(cl::ParseCommandLineOptions(4, args1, StringRef(),
&OS, nullptr, true)); OS.flush();
EXPECT_FALSE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
// Works because `-a` is treated differently than `--ab`.
EXPECT_TRUE(cl::ParseCommandLineOptions(4, args2, StringRef(),
&OS, nullptr, true)); OS.flush();
EXPECT_TRUE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
// Works because `-ab` is treated as `-a -b`, and `--ab` is a long option.
EXPECT_TRUE(cl::ParseCommandLineOptions(4, args3, StringRef(),
&OS, nullptr, true));
EXPECT_TRUE(OptA);
EXPECT_TRUE(OptBLong);
EXPECT_STREQ("val1", OptAB.c_str());
OS.flush();
EXPECT_TRUE(Errs.empty()); Errs.clear();
cl::ResetAllOptionOccurrences();
}
TEST(CommandLineTest, OptionErrorMessage) {
// When there is an error, we expect some error message like:
// prog: for the -a option: [...]
//
// Test whether the "for the -a option"-part is correctly formatted.
cl::ResetCommandLineParser();
StackOption<bool> OptA("a", cl::desc("Some option"));
StackOption<bool> OptLong("long", cl::desc("Some long option"));
std::string Errs;
raw_string_ostream OS(Errs);
OptA.error("custom error", OS);
OS.flush();
EXPECT_FALSE(Errs.find("for the -a option:") == std::string::npos);
Errs.clear();
OptLong.error("custom error", OS);
OS.flush();
EXPECT_FALSE(Errs.find("for the --long option:") == std::string::npos);
Errs.clear();
cl::ResetAllOptionOccurrences();
}
TEST(CommandLineTest, OptionErrorMessageSuggest) {
// When there is an error, and the edit-distance is not very large,
// we expect some error message like:
// prog: did you mean '--option'?
//
// Test whether this message is well-formatted.
cl::ResetCommandLineParser();
StackOption<bool> OptLong("aluminium", cl::desc("Some long option"));
const char *args[] = {"prog", "--aluminum"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_FALSE(cl::ParseCommandLineOptions(2, args, StringRef(), &OS));
OS.flush();
EXPECT_FALSE(Errs.find("prog: Did you mean '--aluminium'?\n") ==
std::string::npos);
Errs.clear();
cl::ResetAllOptionOccurrences();
}
TEST(CommandLineTest, OptionErrorMessageSuggestNoHidden) {
// We expect that 'really hidden' option do not show up in option
// suggestions.
cl::ResetCommandLineParser();
StackOption<bool> OptLong("aluminium", cl::desc("Some long option"));
StackOption<bool> OptLong2("aluminum", cl::desc("Bad option"),
cl::ReallyHidden);
const char *args[] = {"prog", "--alumnum"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_FALSE(cl::ParseCommandLineOptions(2, args, StringRef(), &OS));
OS.flush();
EXPECT_FALSE(Errs.find("prog: Did you mean '--aluminium'?\n") ==
std::string::npos);
Errs.clear();
cl::ResetAllOptionOccurrences();
}
TEST(CommandLineTest, Callback) {
cl::ResetCommandLineParser();
StackOption<bool> OptA("a", cl::desc("option a"));
StackOption<bool> OptB(
"b", cl::desc("option b -- This option turns on option a"),
cl::callback([&](const bool &) { OptA = true; }));
StackOption<bool> OptC(
"c", cl::desc("option c -- This option turns on options a and b"),
cl::callback([&](const bool &) { OptB = true; }));
StackOption<std::string, cl::list<std::string>> List(
"list",
cl::desc("option list -- This option turns on options a, b, and c when "
"'foo' is included in list"),
cl::CommaSeparated,
cl::callback([&](const std::string &Str) {
if (Str == "foo")
OptC = true;
}));
const char *args1[] = {"prog", "-a"};
EXPECT_TRUE(cl::ParseCommandLineOptions(2, args1));
EXPECT_TRUE(OptA);
EXPECT_FALSE(OptB);
EXPECT_FALSE(OptC);
EXPECT_TRUE(List.size() == 0);
cl::ResetAllOptionOccurrences();
const char *args2[] = {"prog", "-b"};
EXPECT_TRUE(cl::ParseCommandLineOptions(2, args2));
EXPECT_TRUE(OptA);
EXPECT_TRUE(OptB);
EXPECT_FALSE(OptC);
EXPECT_TRUE(List.size() == 0);
cl::ResetAllOptionOccurrences();
const char *args3[] = {"prog", "-c"};
EXPECT_TRUE(cl::ParseCommandLineOptions(2, args3));
EXPECT_TRUE(OptA);
EXPECT_TRUE(OptB);
EXPECT_TRUE(OptC);
EXPECT_TRUE(List.size() == 0);
cl::ResetAllOptionOccurrences();
const char *args4[] = {"prog", "--list=foo,bar"};
EXPECT_TRUE(cl::ParseCommandLineOptions(2, args4));
EXPECT_TRUE(OptA);
EXPECT_TRUE(OptB);
EXPECT_TRUE(OptC);
EXPECT_TRUE(List.size() == 2);
cl::ResetAllOptionOccurrences();
const char *args5[] = {"prog", "--list=bar"};
EXPECT_TRUE(cl::ParseCommandLineOptions(2, args5));
EXPECT_FALSE(OptA);
EXPECT_FALSE(OptB);
EXPECT_FALSE(OptC);
EXPECT_TRUE(List.size() == 1);
cl::ResetAllOptionOccurrences();
}
enum Enum { Val1, Val2 };
static cl::bits<Enum> ExampleBits(
cl::desc("An example cl::bits to ensure it compiles"),
cl::values(
clEnumValN(Val1, "bits-val1", "The Val1 value"),
clEnumValN(Val1, "bits-val2", "The Val2 value")));
TEST(CommandLineTest, ConsumeAfterOnePositional) {
cl::ResetCommandLineParser();
// input [args]
StackOption<std::string, cl::opt<std::string>> Input(cl::Positional,
cl::Required);
StackOption<std::string, cl::list<std::string>> ExtraArgs(cl::ConsumeAfter);
const char *Args[] = {"prog", "input", "arg1", "arg2"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_TRUE(cl::ParseCommandLineOptions(4, Args, StringRef(), &OS));
OS.flush();
EXPECT_EQ("input", Input);
EXPECT_TRUE(ExtraArgs.size() == 2);
EXPECT_TRUE(ExtraArgs[0] == "arg1");
EXPECT_TRUE(ExtraArgs[1] == "arg2");
EXPECT_TRUE(Errs.empty());
}
TEST(CommandLineTest, ConsumeAfterTwoPositionals) {
cl::ResetCommandLineParser();
// input1 input2 [args]
StackOption<std::string, cl::opt<std::string>> Input1(cl::Positional,
cl::Required);
StackOption<std::string, cl::opt<std::string>> Input2(cl::Positional,
cl::Required);
StackOption<std::string, cl::list<std::string>> ExtraArgs(cl::ConsumeAfter);
const char *Args[] = {"prog", "input1", "input2", "arg1", "arg2"};
std::string Errs;
raw_string_ostream OS(Errs);
EXPECT_TRUE(cl::ParseCommandLineOptions(5, Args, StringRef(), &OS));
OS.flush();
EXPECT_EQ("input1", Input1);
EXPECT_EQ("input2", Input2);
EXPECT_TRUE(ExtraArgs.size() == 2);
EXPECT_TRUE(ExtraArgs[0] == "arg1");
EXPECT_TRUE(ExtraArgs[1] == "arg2");
EXPECT_TRUE(Errs.empty());
}
} // anonymous namespace
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