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llvm-mirror/unittests/ADT/StringRefTest.cpp
Martin Storsjö 24c3cf43d7 [ADT] Rename StringRef case insensitive methods for clarity 
Rename functions with the `xx_lower()` names to `xx_insensitive()`.
This was requested during the review of D104218.

Test names and variables in llvm/unittests/ADT/StringRefTest.cpp
that refer to "lower" are renamed to "insensitive" correspondingly.

Unused function aliases with the former method names are left
in place (without any deprecation attributes) for transition purposes.

All references within the monorepo will be changed (with essentially
mechanical changes), and then the old names will be removed in a
later commit.

Also remove the superfluous method names at the start of doxygen
comments, for the methods that are touched here. (There are more
occurrances of this left in other methods though.) Also remove
duplicate doxygen comments from the implementation file.

Differential Revision: https://reviews.llvm.org/D104819
2021-06-25 00:22:00 +03:00

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//===- llvm/unittest/ADT/StringRefTest.cpp - StringRef unit 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/ADT/StringRef.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace llvm {
std::ostream &operator<<(std::ostream &OS, const StringRef &S) {
OS << S.str();
return OS;
}
std::ostream &operator<<(std::ostream &OS,
const std::pair<StringRef, StringRef> &P) {
OS << "(" << P.first << ", " << P.second << ")";
return OS;
}
}
// Check that we can't accidentally assign a temporary std::string to a
// StringRef. (Unfortunately we can't make use of the same thing with
// constructors.)
static_assert(
!std::is_assignable<StringRef&, std::string>::value,
"Assigning from prvalue std::string");
static_assert(
!std::is_assignable<StringRef&, std::string &&>::value,
"Assigning from xvalue std::string");
static_assert(
std::is_assignable<StringRef&, std::string &>::value,
"Assigning from lvalue std::string");
static_assert(
std::is_assignable<StringRef&, const char *>::value,
"Assigning from prvalue C string");
static_assert(
std::is_assignable<StringRef&, const char * &&>::value,
"Assigning from xvalue C string");
static_assert(
std::is_assignable<StringRef&, const char * &>::value,
"Assigning from lvalue C string");
namespace {
TEST(StringRefTest, Construction) {
EXPECT_EQ("", StringRef());
EXPECT_EQ("hello", StringRef("hello"));
EXPECT_EQ("hello", StringRef("hello world", 5));
EXPECT_EQ("hello", StringRef(std::string("hello")));
#if __cplusplus > 201402L
EXPECT_EQ("hello", StringRef(std::string_view("hello")));
#endif
}
TEST(StringRefTest, Conversion) {
EXPECT_EQ("hello", std::string(StringRef("hello")));
#if __cplusplus > 201402L
EXPECT_EQ("hello", std::string_view(StringRef("hello")));
#endif
}
TEST(StringRefTest, EmptyInitializerList) {
StringRef S = {};
EXPECT_TRUE(S.empty());
S = {};
EXPECT_TRUE(S.empty());
}
TEST(StringRefTest, Iteration) {
StringRef S("hello");
const char *p = "hello";
for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
EXPECT_EQ(*it, *p);
}
TEST(StringRefTest, StringOps) {
const char *p = "hello";
EXPECT_EQ(p, StringRef(p, 0).data());
EXPECT_TRUE(StringRef().empty());
EXPECT_EQ((size_t) 5, StringRef("hello").size());
EXPECT_EQ(-1, StringRef("aab").compare("aad"));
EXPECT_EQ( 0, StringRef("aab").compare("aab"));
EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
EXPECT_EQ( 1, StringRef("aab").compare("aa"));
EXPECT_EQ( 1, StringRef("\xFF").compare("\1"));
EXPECT_EQ(-1, StringRef("AaB").compare_insensitive("aAd"));
EXPECT_EQ( 0, StringRef("AaB").compare_insensitive("aab"));
EXPECT_EQ( 1, StringRef("AaB").compare_insensitive("AAA"));
EXPECT_EQ(-1, StringRef("AaB").compare_insensitive("aaBb"));
EXPECT_EQ(-1, StringRef("AaB").compare_insensitive("bb"));
EXPECT_EQ( 1, StringRef("aaBb").compare_insensitive("AaB"));
EXPECT_EQ( 1, StringRef("bb").compare_insensitive("AaB"));
EXPECT_EQ( 1, StringRef("AaB").compare_insensitive("aA"));
EXPECT_EQ( 1, StringRef("\xFF").compare_insensitive("\1"));
EXPECT_EQ(-1, StringRef("aab").compare_numeric("aad"));
EXPECT_EQ( 0, StringRef("aab").compare_numeric("aab"));
EXPECT_EQ( 1, StringRef("aab").compare_numeric("aaa"));
EXPECT_EQ(-1, StringRef("aab").compare_numeric("aabb"));
EXPECT_EQ( 1, StringRef("aab").compare_numeric("aa"));
EXPECT_EQ(-1, StringRef("1").compare_numeric("10"));
EXPECT_EQ( 0, StringRef("10").compare_numeric("10"));
EXPECT_EQ( 0, StringRef("10a").compare_numeric("10a"));
EXPECT_EQ( 1, StringRef("2").compare_numeric("1"));
EXPECT_EQ( 0, StringRef("llvm_v1i64_ty").compare_numeric("llvm_v1i64_ty"));
EXPECT_EQ( 1, StringRef("\xFF").compare_numeric("\1"));
EXPECT_EQ( 1, StringRef("V16").compare_numeric("V1_q0"));
EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V16"));
EXPECT_EQ(-1, StringRef("V8_q0").compare_numeric("V16"));
EXPECT_EQ( 1, StringRef("V16").compare_numeric("V8_q0"));
EXPECT_EQ(-1, StringRef("V1_q0").compare_numeric("V8_q0"));
EXPECT_EQ( 1, StringRef("V8_q0").compare_numeric("V1_q0"));
}
TEST(StringRefTest, Operators) {
EXPECT_EQ("", StringRef());
EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
EXPECT_EQ(StringRef("aab"), StringRef("aab"));
EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
EXPECT_EQ('a', StringRef("aab")[1]);
}
TEST(StringRefTest, Substr) {
StringRef Str("hello");
EXPECT_EQ("lo", Str.substr(3));
EXPECT_EQ("", Str.substr(100));
EXPECT_EQ("hello", Str.substr(0, 100));
EXPECT_EQ("o", Str.substr(4, 10));
}
TEST(StringRefTest, Slice) {
StringRef Str("hello");
EXPECT_EQ("l", Str.slice(2, 3));
EXPECT_EQ("ell", Str.slice(1, 4));
EXPECT_EQ("llo", Str.slice(2, 100));
EXPECT_EQ("", Str.slice(2, 1));
EXPECT_EQ("", Str.slice(10, 20));
}
TEST(StringRefTest, Split) {
StringRef Str("hello");
EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
Str.split('X'));
EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
Str.split('e'));
EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
Str.split('h'));
EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("lo")),
Str.split('l'));
EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
Str.split('o'));
EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
Str.rsplit('X'));
EXPECT_EQ(std::make_pair(StringRef("h"), StringRef("llo")),
Str.rsplit('e'));
EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
Str.rsplit('h'));
EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
Str.rsplit('l'));
EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
Str.rsplit('o'));
EXPECT_EQ(std::make_pair(StringRef("he"), StringRef("o")),
Str.rsplit("ll"));
EXPECT_EQ(std::make_pair(StringRef(""), StringRef("ello")),
Str.rsplit("h"));
EXPECT_EQ(std::make_pair(StringRef("hell"), StringRef("")),
Str.rsplit("o"));
EXPECT_EQ(std::make_pair(StringRef("hello"), StringRef("")),
Str.rsplit("::"));
EXPECT_EQ(std::make_pair(StringRef("hel"), StringRef("o")),
Str.rsplit("l"));
}
TEST(StringRefTest, Split2) {
SmallVector<StringRef, 5> parts;
SmallVector<StringRef, 5> expected;
expected.push_back("ab"); expected.push_back("c");
StringRef(",ab,,c,").split(parts, ",", -1, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back(""); expected.push_back("ab"); expected.push_back("");
expected.push_back("c"); expected.push_back("");
StringRef(",ab,,c,").split(parts, ",", -1, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("");
StringRef("").split(parts, ",", -1, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
StringRef("").split(parts, ",", -1, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
StringRef(",").split(parts, ",", -1, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back(""); expected.push_back("");
StringRef(",").split(parts, ",", -1, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back("b");
StringRef("a,b").split(parts, ",", -1, true);
EXPECT_TRUE(parts == expected);
// Test MaxSplit
expected.clear(); parts.clear();
expected.push_back("a,,b,c");
StringRef("a,,b,c").split(parts, ",", 0, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a,,b,c");
StringRef("a,,b,c").split(parts, ",", 0, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back(",b,c");
StringRef("a,,b,c").split(parts, ",", 1, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back(",b,c");
StringRef("a,,b,c").split(parts, ",", 1, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back(""); expected.push_back("b,c");
StringRef("a,,b,c").split(parts, ",", 2, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back("b,c");
StringRef("a,,b,c").split(parts, ",", 2, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back(""); expected.push_back("b");
expected.push_back("c");
StringRef("a,,b,c").split(parts, ",", 3, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
StringRef("a,,b,c").split(parts, ",", 3, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a"); expected.push_back("b"); expected.push_back("c");
StringRef("a,,b,c").split(parts, ',', 3, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("");
StringRef().split(parts, ",", 0, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back(StringRef());
StringRef("").split(parts, ",", 0, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
StringRef("").split(parts, ",", 0, false);
EXPECT_TRUE(parts == expected);
StringRef().split(parts, ",", 0, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a");
expected.push_back("");
expected.push_back("b");
expected.push_back("c,d");
StringRef("a,,b,c,d").split(parts, ",", 3, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("");
StringRef().split(parts, ',', 0, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back(StringRef());
StringRef("").split(parts, ',', 0, true);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
StringRef("").split(parts, ',', 0, false);
EXPECT_TRUE(parts == expected);
StringRef().split(parts, ',', 0, false);
EXPECT_TRUE(parts == expected);
expected.clear(); parts.clear();
expected.push_back("a");
expected.push_back("");
expected.push_back("b");
expected.push_back("c,d");
StringRef("a,,b,c,d").split(parts, ',', 3, true);
EXPECT_TRUE(parts == expected);
}
TEST(StringRefTest, Trim) {
StringRef Str0("hello");
StringRef Str1(" hello ");
StringRef Str2(" hello ");
StringRef Str3("\t\n\v\f\r hello \t\n\v\f\r");
EXPECT_EQ(StringRef("hello"), Str0.rtrim());
EXPECT_EQ(StringRef(" hello"), Str1.rtrim());
EXPECT_EQ(StringRef(" hello"), Str2.rtrim());
EXPECT_EQ(StringRef("\t\n\v\f\r hello"), Str3.rtrim());
EXPECT_EQ(StringRef("hello"), Str0.ltrim());
EXPECT_EQ(StringRef("hello "), Str1.ltrim());
EXPECT_EQ(StringRef("hello "), Str2.ltrim());
EXPECT_EQ(StringRef("hello \t\n\v\f\r"), Str3.ltrim());
EXPECT_EQ(StringRef("hello"), Str0.trim());
EXPECT_EQ(StringRef("hello"), Str1.trim());
EXPECT_EQ(StringRef("hello"), Str2.trim());
EXPECT_EQ(StringRef("hello"), Str3.trim());
EXPECT_EQ(StringRef("ello"), Str0.trim("hhhhhhhhhhh"));
EXPECT_EQ(StringRef(""), StringRef("").trim());
EXPECT_EQ(StringRef(""), StringRef(" ").trim());
EXPECT_EQ(StringRef("\0", 1), StringRef(" \0 ", 3).trim());
EXPECT_EQ(StringRef("\0\0", 2), StringRef("\0\0", 2).trim());
EXPECT_EQ(StringRef("x"), StringRef("\0\0x\0\0", 5).trim('\0'));
}
TEST(StringRefTest, StartsWith) {
StringRef Str("hello");
EXPECT_TRUE(Str.startswith(""));
EXPECT_TRUE(Str.startswith("he"));
EXPECT_FALSE(Str.startswith("helloworld"));
EXPECT_FALSE(Str.startswith("hi"));
}
TEST(StringRefTest, StartsWithInsensitive) {
StringRef Str("heLLo");
EXPECT_TRUE(Str.startswith_insensitive(""));
EXPECT_TRUE(Str.startswith_insensitive("he"));
EXPECT_TRUE(Str.startswith_insensitive("hell"));
EXPECT_TRUE(Str.startswith_insensitive("HELlo"));
EXPECT_FALSE(Str.startswith_insensitive("helloworld"));
EXPECT_FALSE(Str.startswith_insensitive("hi"));
}
TEST(StringRefTest, ConsumeFront) {
StringRef Str("hello");
EXPECT_TRUE(Str.consume_front(""));
EXPECT_EQ("hello", Str);
EXPECT_TRUE(Str.consume_front("he"));
EXPECT_EQ("llo", Str);
EXPECT_FALSE(Str.consume_front("lloworld"));
EXPECT_EQ("llo", Str);
EXPECT_FALSE(Str.consume_front("lol"));
EXPECT_EQ("llo", Str);
EXPECT_TRUE(Str.consume_front("llo"));
EXPECT_EQ("", Str);
EXPECT_FALSE(Str.consume_front("o"));
EXPECT_TRUE(Str.consume_front(""));
}
TEST(StringRefTest, ConsumeFrontInsensitive) {
StringRef Str("heLLo");
EXPECT_TRUE(Str.consume_front_insensitive(""));
EXPECT_EQ("heLLo", Str);
EXPECT_FALSE(Str.consume_front("HEl"));
EXPECT_EQ("heLLo", Str);
EXPECT_TRUE(Str.consume_front_insensitive("HEl"));
EXPECT_EQ("Lo", Str);
EXPECT_FALSE(Str.consume_front_insensitive("loworld"));
EXPECT_EQ("Lo", Str);
EXPECT_FALSE(Str.consume_front_insensitive("ol"));
EXPECT_EQ("Lo", Str);
EXPECT_TRUE(Str.consume_front_insensitive("lo"));
EXPECT_EQ("", Str);
EXPECT_FALSE(Str.consume_front_insensitive("o"));
EXPECT_TRUE(Str.consume_front_insensitive(""));
}
TEST(StringRefTest, EndsWith) {
StringRef Str("hello");
EXPECT_TRUE(Str.endswith(""));
EXPECT_TRUE(Str.endswith("lo"));
EXPECT_FALSE(Str.endswith("helloworld"));
EXPECT_FALSE(Str.endswith("worldhello"));
EXPECT_FALSE(Str.endswith("so"));
}
TEST(StringRefTest, EndsWithInsensitive) {
StringRef Str("heLLo");
EXPECT_TRUE(Str.endswith_insensitive(""));
EXPECT_TRUE(Str.endswith_insensitive("lo"));
EXPECT_TRUE(Str.endswith_insensitive("LO"));
EXPECT_TRUE(Str.endswith_insensitive("ELlo"));
EXPECT_FALSE(Str.endswith_insensitive("helloworld"));
EXPECT_FALSE(Str.endswith_insensitive("hi"));
}
TEST(StringRefTest, ConsumeBack) {
StringRef Str("hello");
EXPECT_TRUE(Str.consume_back(""));
EXPECT_EQ("hello", Str);
EXPECT_TRUE(Str.consume_back("lo"));
EXPECT_EQ("hel", Str);
EXPECT_FALSE(Str.consume_back("helhel"));
EXPECT_EQ("hel", Str);
EXPECT_FALSE(Str.consume_back("hle"));
EXPECT_EQ("hel", Str);
EXPECT_TRUE(Str.consume_back("hel"));
EXPECT_EQ("", Str);
EXPECT_FALSE(Str.consume_back("h"));
EXPECT_TRUE(Str.consume_back(""));
}
TEST(StringRefTest, ConsumeBackInsensitive) {
StringRef Str("heLLo");
EXPECT_TRUE(Str.consume_back_insensitive(""));
EXPECT_EQ("heLLo", Str);
EXPECT_FALSE(Str.consume_back("lO"));
EXPECT_EQ("heLLo", Str);
EXPECT_TRUE(Str.consume_back_insensitive("lO"));
EXPECT_EQ("heL", Str);
EXPECT_FALSE(Str.consume_back_insensitive("helhel"));
EXPECT_EQ("heL", Str);
EXPECT_FALSE(Str.consume_back_insensitive("hle"));
EXPECT_EQ("heL", Str);
EXPECT_TRUE(Str.consume_back_insensitive("hEl"));
EXPECT_EQ("", Str);
EXPECT_FALSE(Str.consume_back_insensitive("h"));
EXPECT_TRUE(Str.consume_back_insensitive(""));
}
TEST(StringRefTest, Find) {
StringRef Str("helloHELLO");
StringRef LongStr("hellx xello hell ello world foo bar hello HELLO");
struct {
StringRef Str;
char C;
std::size_t From;
std::size_t Pos;
std::size_t InsensitivePos;
} CharExpectations[] = {
{Str, 'h', 0U, 0U, 0U},
{Str, 'e', 0U, 1U, 1U},
{Str, 'l', 0U, 2U, 2U},
{Str, 'l', 3U, 3U, 3U},
{Str, 'o', 0U, 4U, 4U},
{Str, 'L', 0U, 7U, 2U},
{Str, 'z', 0U, StringRef::npos, StringRef::npos},
};
struct {
StringRef Str;
llvm::StringRef S;
std::size_t From;
std::size_t Pos;
std::size_t InsensitivePos;
} StrExpectations[] = {
{Str, "helloword", 0, StringRef::npos, StringRef::npos},
{Str, "hello", 0, 0U, 0U},
{Str, "ello", 0, 1U, 1U},
{Str, "zz", 0, StringRef::npos, StringRef::npos},
{Str, "ll", 2U, 2U, 2U},
{Str, "ll", 3U, StringRef::npos, 7U},
{Str, "LL", 2U, 7U, 2U},
{Str, "LL", 3U, 7U, 7U},
{Str, "", 0U, 0U, 0U},
{LongStr, "hello", 0U, 36U, 36U},
{LongStr, "foo", 0U, 28U, 28U},
{LongStr, "hell", 2U, 12U, 12U},
{LongStr, "HELL", 2U, 42U, 12U},
{LongStr, "", 0U, 0U, 0U}};
for (auto &E : CharExpectations) {
EXPECT_EQ(E.Pos, E.Str.find(E.C, E.From));
EXPECT_EQ(E.InsensitivePos, E.Str.find_insensitive(E.C, E.From));
EXPECT_EQ(E.InsensitivePos, E.Str.find_insensitive(toupper(E.C), E.From));
}
for (auto &E : StrExpectations) {
EXPECT_EQ(E.Pos, E.Str.find(E.S, E.From));
EXPECT_EQ(E.InsensitivePos, E.Str.find_insensitive(E.S, E.From));
EXPECT_EQ(E.InsensitivePos, E.Str.find_insensitive(E.S.upper(), E.From));
}
EXPECT_EQ(3U, Str.rfind('l'));
EXPECT_EQ(StringRef::npos, Str.rfind('z'));
EXPECT_EQ(StringRef::npos, Str.rfind("helloworld"));
EXPECT_EQ(0U, Str.rfind("hello"));
EXPECT_EQ(1U, Str.rfind("ello"));
EXPECT_EQ(StringRef::npos, Str.rfind("zz"));
EXPECT_EQ(8U, Str.rfind_insensitive('l'));
EXPECT_EQ(8U, Str.rfind_insensitive('L'));
EXPECT_EQ(StringRef::npos, Str.rfind_insensitive('z'));
EXPECT_EQ(StringRef::npos, Str.rfind_insensitive("HELLOWORLD"));
EXPECT_EQ(5U, Str.rfind("HELLO"));
EXPECT_EQ(6U, Str.rfind("ELLO"));
EXPECT_EQ(StringRef::npos, Str.rfind("ZZ"));
EXPECT_EQ(2U, Str.find_first_of('l'));
EXPECT_EQ(1U, Str.find_first_of("el"));
EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
Str = "hello";
EXPECT_EQ(1U, Str.find_first_not_of('h'));
EXPECT_EQ(4U, Str.find_first_not_of("hel"));
EXPECT_EQ(StringRef::npos, Str.find_first_not_of("hello"));
EXPECT_EQ(3U, Str.find_last_not_of('o'));
EXPECT_EQ(1U, Str.find_last_not_of("lo"));
EXPECT_EQ(StringRef::npos, Str.find_last_not_of("helo"));
}
TEST(StringRefTest, Count) {
StringRef Str("hello");
EXPECT_EQ(2U, Str.count('l'));
EXPECT_EQ(1U, Str.count('o'));
EXPECT_EQ(0U, Str.count('z'));
EXPECT_EQ(0U, Str.count("helloworld"));
EXPECT_EQ(1U, Str.count("hello"));
EXPECT_EQ(1U, Str.count("ello"));
EXPECT_EQ(0U, Str.count("zz"));
EXPECT_EQ(0U, Str.count(""));
StringRef OverlappingAbba("abbabba");
EXPECT_EQ(1U, OverlappingAbba.count("abba"));
StringRef NonOverlappingAbba("abbaabba");
EXPECT_EQ(2U, NonOverlappingAbba.count("abba"));
StringRef ComplexAbba("abbabbaxyzabbaxyz");
EXPECT_EQ(2U, ComplexAbba.count("abba"));
}
TEST(StringRefTest, EditDistance) {
StringRef Hello("hello");
EXPECT_EQ(2U, Hello.edit_distance("hill"));
StringRef Industry("industry");
EXPECT_EQ(6U, Industry.edit_distance("interest"));
StringRef Soylent("soylent green is people");
EXPECT_EQ(19U, Soylent.edit_distance("people soiled our green"));
EXPECT_EQ(26U, Soylent.edit_distance("people soiled our green",
/* allow replacements = */ false));
EXPECT_EQ(9U, Soylent.edit_distance("people soiled our green",
/* allow replacements = */ true,
/* max edit distance = */ 8));
EXPECT_EQ(53U, Soylent.edit_distance("people soiled our green "
"people soiled our green "
"people soiled our green "));
}
TEST(StringRefTest, Misc) {
std::string Storage;
raw_string_ostream OS(Storage);
OS << StringRef("hello");
EXPECT_EQ("hello", OS.str());
}
TEST(StringRefTest, Hashing) {
EXPECT_EQ(hash_value(std::string()), hash_value(StringRef()));
EXPECT_EQ(hash_value(std::string()), hash_value(StringRef("")));
std::string S = "hello world";
hash_code H = hash_value(S);
EXPECT_EQ(H, hash_value(StringRef("hello world")));
EXPECT_EQ(H, hash_value(StringRef(S)));
EXPECT_NE(H, hash_value(StringRef("hello worl")));
EXPECT_EQ(hash_value(std::string("hello worl")),
hash_value(StringRef("hello worl")));
EXPECT_NE(H, hash_value(StringRef("hello world ")));
EXPECT_EQ(hash_value(std::string("hello world ")),
hash_value(StringRef("hello world ")));
EXPECT_EQ(H, hash_value(StringRef("hello world\0")));
EXPECT_NE(hash_value(std::string("ello worl")),
hash_value(StringRef("hello world").slice(1, -1)));
}
struct UnsignedPair {
const char *Str;
uint64_t Expected;
} Unsigned[] =
{ {"0", 0}
, {"255", 255}
, {"256", 256}
, {"65535", 65535}
, {"65536", 65536}
, {"4294967295", 4294967295ULL}
, {"4294967296", 4294967296ULL}
, {"18446744073709551615", 18446744073709551615ULL}
, {"042", 34}
, {"0x42", 66}
, {"0b101010", 42}
};
struct SignedPair {
const char *Str;
int64_t Expected;
} Signed[] =
{ {"0", 0}
, {"-0", 0}
, {"127", 127}
, {"128", 128}
, {"-128", -128}
, {"-129", -129}
, {"32767", 32767}
, {"32768", 32768}
, {"-32768", -32768}
, {"-32769", -32769}
, {"2147483647", 2147483647LL}
, {"2147483648", 2147483648LL}
, {"-2147483648", -2147483648LL}
, {"-2147483649", -2147483649LL}
, {"-9223372036854775808", -(9223372036854775807LL) - 1}
, {"042", 34}
, {"0x42", 66}
, {"0b101010", 42}
, {"-042", -34}
, {"-0x42", -66}
, {"-0b101010", -42}
};
TEST(StringRefTest, getAsInteger) {
uint8_t U8;
uint16_t U16;
uint32_t U32;
uint64_t U64;
for (size_t i = 0; i < array_lengthof(Unsigned); ++i) {
bool U8Success = StringRef(Unsigned[i].Str).getAsInteger(0, U8);
if (static_cast<uint8_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
ASSERT_FALSE(U8Success);
EXPECT_EQ(U8, Unsigned[i].Expected);
} else {
ASSERT_TRUE(U8Success);
}
bool U16Success = StringRef(Unsigned[i].Str).getAsInteger(0, U16);
if (static_cast<uint16_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
ASSERT_FALSE(U16Success);
EXPECT_EQ(U16, Unsigned[i].Expected);
} else {
ASSERT_TRUE(U16Success);
}
bool U32Success = StringRef(Unsigned[i].Str).getAsInteger(0, U32);
if (static_cast<uint32_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
ASSERT_FALSE(U32Success);
EXPECT_EQ(U32, Unsigned[i].Expected);
} else {
ASSERT_TRUE(U32Success);
}
bool U64Success = StringRef(Unsigned[i].Str).getAsInteger(0, U64);
ASSERT_FALSE(U64Success);
EXPECT_EQ(U64, Unsigned[i].Expected);
}
int8_t S8;
int16_t S16;
int32_t S32;
int64_t S64;
for (size_t i = 0; i < array_lengthof(Signed); ++i) {
bool S8Success = StringRef(Signed[i].Str).getAsInteger(0, S8);
if (static_cast<int8_t>(Signed[i].Expected) == Signed[i].Expected) {
ASSERT_FALSE(S8Success);
EXPECT_EQ(S8, Signed[i].Expected);
} else {
ASSERT_TRUE(S8Success);
}
bool S16Success = StringRef(Signed[i].Str).getAsInteger(0, S16);
if (static_cast<int16_t>(Signed[i].Expected) == Signed[i].Expected) {
ASSERT_FALSE(S16Success);
EXPECT_EQ(S16, Signed[i].Expected);
} else {
ASSERT_TRUE(S16Success);
}
bool S32Success = StringRef(Signed[i].Str).getAsInteger(0, S32);
if (static_cast<int32_t>(Signed[i].Expected) == Signed[i].Expected) {
ASSERT_FALSE(S32Success);
EXPECT_EQ(S32, Signed[i].Expected);
} else {
ASSERT_TRUE(S32Success);
}
bool S64Success = StringRef(Signed[i].Str).getAsInteger(0, S64);
ASSERT_FALSE(S64Success);
EXPECT_EQ(S64, Signed[i].Expected);
}
}
static const char* BadStrings[] = {
"" // empty string
, "18446744073709551617" // value just over max
, "123456789012345678901" // value way too large
, "4t23v" // illegal decimal characters
, "0x123W56" // illegal hex characters
, "0b2" // illegal bin characters
, "08" // illegal oct characters
, "0o8" // illegal oct characters
, "-123" // negative unsigned value
, "0x"
, "0b"
};
TEST(StringRefTest, getAsUnsignedIntegerBadStrings) {
unsigned long long U64;
for (size_t i = 0; i < array_lengthof(BadStrings); ++i) {
bool IsBadNumber = StringRef(BadStrings[i]).getAsInteger(0, U64);
ASSERT_TRUE(IsBadNumber);
}
}
struct ConsumeUnsignedPair {
const char *Str;
uint64_t Expected;
const char *Leftover;
} ConsumeUnsigned[] = {
{"0", 0, ""},
{"255", 255, ""},
{"256", 256, ""},
{"65535", 65535, ""},
{"65536", 65536, ""},
{"4294967295", 4294967295ULL, ""},
{"4294967296", 4294967296ULL, ""},
{"255A376", 255, "A376"},
{"18446744073709551615", 18446744073709551615ULL, ""},
{"18446744073709551615ABC", 18446744073709551615ULL, "ABC"},
{"042", 34, ""},
{"0x42", 66, ""},
{"0x42-0x34", 66, "-0x34"},
{"0b101010", 42, ""},
{"0429F", 042, "9F"}, // Auto-sensed octal radix, invalid digit
{"0x42G12", 0x42, "G12"}, // Auto-sensed hex radix, invalid digit
{"0b10101020101", 42, "20101"}}; // Auto-sensed binary radix, invalid digit.
struct ConsumeSignedPair {
const char *Str;
int64_t Expected;
const char *Leftover;
} ConsumeSigned[] = {
{"0", 0, ""},
{"-0", 0, ""},
{"0-1", 0, "-1"},
{"-0-1", 0, "-1"},
{"127", 127, ""},
{"128", 128, ""},
{"127-1", 127, "-1"},
{"128-1", 128, "-1"},
{"-128", -128, ""},
{"-129", -129, ""},
{"-128-1", -128, "-1"},
{"-129-1", -129, "-1"},
{"32767", 32767, ""},
{"32768", 32768, ""},
{"32767-1", 32767, "-1"},
{"32768-1", 32768, "-1"},
{"-32768", -32768, ""},
{"-32769", -32769, ""},
{"-32768-1", -32768, "-1"},
{"-32769-1", -32769, "-1"},
{"2147483647", 2147483647LL, ""},
{"2147483648", 2147483648LL, ""},
{"2147483647-1", 2147483647LL, "-1"},
{"2147483648-1", 2147483648LL, "-1"},
{"-2147483648", -2147483648LL, ""},
{"-2147483649", -2147483649LL, ""},
{"-2147483648-1", -2147483648LL, "-1"},
{"-2147483649-1", -2147483649LL, "-1"},
{"-9223372036854775808", -(9223372036854775807LL) - 1, ""},
{"-9223372036854775808-1", -(9223372036854775807LL) - 1, "-1"},
{"042", 34, ""},
{"042-1", 34, "-1"},
{"0x42", 66, ""},
{"0x42-1", 66, "-1"},
{"0b101010", 42, ""},
{"0b101010-1", 42, "-1"},
{"-042", -34, ""},
{"-042-1", -34, "-1"},
{"-0x42", -66, ""},
{"-0x42-1", -66, "-1"},
{"-0b101010", -42, ""},
{"-0b101010-1", -42, "-1"}};
TEST(StringRefTest, consumeIntegerUnsigned) {
uint8_t U8;
uint16_t U16;
uint32_t U32;
uint64_t U64;
for (size_t i = 0; i < array_lengthof(ConsumeUnsigned); ++i) {
StringRef Str = ConsumeUnsigned[i].Str;
bool U8Success = Str.consumeInteger(0, U8);
if (static_cast<uint8_t>(ConsumeUnsigned[i].Expected) ==
ConsumeUnsigned[i].Expected) {
ASSERT_FALSE(U8Success);
EXPECT_EQ(U8, ConsumeUnsigned[i].Expected);
EXPECT_EQ(Str, ConsumeUnsigned[i].Leftover);
} else {
ASSERT_TRUE(U8Success);
}
Str = ConsumeUnsigned[i].Str;
bool U16Success = Str.consumeInteger(0, U16);
if (static_cast<uint16_t>(ConsumeUnsigned[i].Expected) ==
ConsumeUnsigned[i].Expected) {
ASSERT_FALSE(U16Success);
EXPECT_EQ(U16, ConsumeUnsigned[i].Expected);
EXPECT_EQ(Str, ConsumeUnsigned[i].Leftover);
} else {
ASSERT_TRUE(U16Success);
}
Str = ConsumeUnsigned[i].Str;
bool U32Success = Str.consumeInteger(0, U32);
if (static_cast<uint32_t>(ConsumeUnsigned[i].Expected) ==
ConsumeUnsigned[i].Expected) {
ASSERT_FALSE(U32Success);
EXPECT_EQ(U32, ConsumeUnsigned[i].Expected);
EXPECT_EQ(Str, ConsumeUnsigned[i].Leftover);
} else {
ASSERT_TRUE(U32Success);
}
Str = ConsumeUnsigned[i].Str;
bool U64Success = Str.consumeInteger(0, U64);
ASSERT_FALSE(U64Success);
EXPECT_EQ(U64, ConsumeUnsigned[i].Expected);
EXPECT_EQ(Str, ConsumeUnsigned[i].Leftover);
}
}
TEST(StringRefTest, consumeIntegerSigned) {
int8_t S8;
int16_t S16;
int32_t S32;
int64_t S64;
for (size_t i = 0; i < array_lengthof(ConsumeSigned); ++i) {
StringRef Str = ConsumeSigned[i].Str;
bool S8Success = Str.consumeInteger(0, S8);
if (static_cast<int8_t>(ConsumeSigned[i].Expected) ==
ConsumeSigned[i].Expected) {
ASSERT_FALSE(S8Success);
EXPECT_EQ(S8, ConsumeSigned[i].Expected);
EXPECT_EQ(Str, ConsumeSigned[i].Leftover);
} else {
ASSERT_TRUE(S8Success);
}
Str = ConsumeSigned[i].Str;
bool S16Success = Str.consumeInteger(0, S16);
if (static_cast<int16_t>(ConsumeSigned[i].Expected) ==
ConsumeSigned[i].Expected) {
ASSERT_FALSE(S16Success);
EXPECT_EQ(S16, ConsumeSigned[i].Expected);
EXPECT_EQ(Str, ConsumeSigned[i].Leftover);
} else {
ASSERT_TRUE(S16Success);
}
Str = ConsumeSigned[i].Str;
bool S32Success = Str.consumeInteger(0, S32);
if (static_cast<int32_t>(ConsumeSigned[i].Expected) ==
ConsumeSigned[i].Expected) {
ASSERT_FALSE(S32Success);
EXPECT_EQ(S32, ConsumeSigned[i].Expected);
EXPECT_EQ(Str, ConsumeSigned[i].Leftover);
} else {
ASSERT_TRUE(S32Success);
}
Str = ConsumeSigned[i].Str;
bool S64Success = Str.consumeInteger(0, S64);
ASSERT_FALSE(S64Success);
EXPECT_EQ(S64, ConsumeSigned[i].Expected);
EXPECT_EQ(Str, ConsumeSigned[i].Leftover);
}
}
struct GetDoubleStrings {
const char *Str;
bool AllowInexact;
bool ShouldFail;
double D;
} DoubleStrings[] = {{"0", false, false, 0.0},
{"0.0", false, false, 0.0},
{"-0.0", false, false, -0.0},
{"123.45", false, true, 123.45},
{"123.45", true, false, 123.45},
{"1.8e308", true, false, std::numeric_limits<double>::infinity()},
{"1.8e308", false, true, std::numeric_limits<double>::infinity()},
{"0x0.0000000000001P-1023", false, true, 0.0},
{"0x0.0000000000001P-1023", true, false, 0.0},
};
TEST(StringRefTest, getAsDouble) {
for (const auto &Entry : DoubleStrings) {
double Result;
StringRef S(Entry.Str);
EXPECT_EQ(Entry.ShouldFail, S.getAsDouble(Result, Entry.AllowInexact));
if (!Entry.ShouldFail) {
EXPECT_EQ(Result, Entry.D);
}
}
}
static const char *join_input[] = { "a", "b", "c" };
static const char join_result1[] = "a";
static const char join_result2[] = "a:b:c";
static const char join_result3[] = "a::b::c";
TEST(StringRefTest, joinStrings) {
std::vector<StringRef> v1;
std::vector<std::string> v2;
for (size_t i = 0; i < array_lengthof(join_input); ++i) {
v1.push_back(join_input[i]);
v2.push_back(join_input[i]);
}
bool v1_join1 = join(v1.begin(), v1.begin() + 1, ":") == join_result1;
EXPECT_TRUE(v1_join1);
bool v1_join2 = join(v1.begin(), v1.end(), ":") == join_result2;
EXPECT_TRUE(v1_join2);
bool v1_join3 = join(v1.begin(), v1.end(), "::") == join_result3;
EXPECT_TRUE(v1_join3);
bool v2_join1 = join(v2.begin(), v2.begin() + 1, ":") == join_result1;
EXPECT_TRUE(v2_join1);
bool v2_join2 = join(v2.begin(), v2.end(), ":") == join_result2;
EXPECT_TRUE(v2_join2);
bool v2_join3 = join(v2.begin(), v2.end(), "::") == join_result3;
EXPECT_TRUE(v2_join3);
v2_join3 = join(v2, "::") == join_result3;
EXPECT_TRUE(v2_join3);
}
TEST(StringRefTest, AllocatorCopy) {
BumpPtrAllocator Alloc;
// First test empty strings. We don't want these to allocate anything on the
// allocator.
StringRef StrEmpty = "";
StringRef StrEmptyc = StrEmpty.copy(Alloc);
EXPECT_TRUE(StrEmpty.equals(StrEmptyc));
EXPECT_EQ(StrEmptyc.data(), nullptr);
EXPECT_EQ(StrEmptyc.size(), 0u);
EXPECT_EQ(Alloc.getTotalMemory(), 0u);
StringRef Str1 = "hello";
StringRef Str2 = "bye";
StringRef Str1c = Str1.copy(Alloc);
StringRef Str2c = Str2.copy(Alloc);
EXPECT_TRUE(Str1.equals(Str1c));
EXPECT_NE(Str1.data(), Str1c.data());
EXPECT_TRUE(Str2.equals(Str2c));
EXPECT_NE(Str2.data(), Str2c.data());
}
TEST(StringRefTest, Drop) {
StringRef Test("StringRefTest::Drop");
StringRef Dropped = Test.drop_front(5);
EXPECT_EQ(Dropped, "gRefTest::Drop");
Dropped = Test.drop_back(5);
EXPECT_EQ(Dropped, "StringRefTest:");
Dropped = Test.drop_front(0);
EXPECT_EQ(Dropped, Test);
Dropped = Test.drop_back(0);
EXPECT_EQ(Dropped, Test);
Dropped = Test.drop_front(Test.size());
EXPECT_TRUE(Dropped.empty());
Dropped = Test.drop_back(Test.size());
EXPECT_TRUE(Dropped.empty());
}
TEST(StringRefTest, Take) {
StringRef Test("StringRefTest::Take");
StringRef Taken = Test.take_front(5);
EXPECT_EQ(Taken, "Strin");
Taken = Test.take_back(5);
EXPECT_EQ(Taken, ":Take");
Taken = Test.take_front(Test.size());
EXPECT_EQ(Taken, Test);
Taken = Test.take_back(Test.size());
EXPECT_EQ(Taken, Test);
Taken = Test.take_front(0);
EXPECT_TRUE(Taken.empty());
Taken = Test.take_back(0);
EXPECT_TRUE(Taken.empty());
}
TEST(StringRefTest, FindIf) {
StringRef Punct("Test.String");
StringRef NoPunct("ABCDEFG");
StringRef Empty;
auto IsPunct = [](char c) { return ::ispunct(c); };
auto IsAlpha = [](char c) { return ::isalpha(c); };
EXPECT_EQ(4U, Punct.find_if(IsPunct));
EXPECT_EQ(StringRef::npos, NoPunct.find_if(IsPunct));
EXPECT_EQ(StringRef::npos, Empty.find_if(IsPunct));
EXPECT_EQ(4U, Punct.find_if_not(IsAlpha));
EXPECT_EQ(StringRef::npos, NoPunct.find_if_not(IsAlpha));
EXPECT_EQ(StringRef::npos, Empty.find_if_not(IsAlpha));
}
TEST(StringRefTest, TakeWhileUntil) {
StringRef Test("String With 1 Number");
StringRef Taken = Test.take_while([](char c) { return ::isdigit(c); });
EXPECT_EQ("", Taken);
Taken = Test.take_until([](char c) { return ::isdigit(c); });
EXPECT_EQ("String With ", Taken);
Taken = Test.take_while([](char c) { return true; });
EXPECT_EQ(Test, Taken);
Taken = Test.take_until([](char c) { return true; });
EXPECT_EQ("", Taken);
Test = "";
Taken = Test.take_while([](char c) { return true; });
EXPECT_EQ("", Taken);
}
TEST(StringRefTest, DropWhileUntil) {
StringRef Test("String With 1 Number");
StringRef Taken = Test.drop_while([](char c) { return ::isdigit(c); });
EXPECT_EQ(Test, Taken);
Taken = Test.drop_until([](char c) { return ::isdigit(c); });
EXPECT_EQ("1 Number", Taken);
Taken = Test.drop_while([](char c) { return true; });
EXPECT_EQ("", Taken);
Taken = Test.drop_until([](char c) { return true; });
EXPECT_EQ(Test, Taken);
StringRef EmptyString = "";
Taken = EmptyString.drop_while([](char c) { return true; });
EXPECT_EQ("", Taken);
}
TEST(StringRefTest, StringLiteral) {
constexpr StringRef StringRefs[] = {"Foo", "Bar"};
EXPECT_EQ(StringRef("Foo"), StringRefs[0]);
EXPECT_EQ(StringRef("Bar"), StringRefs[1]);
constexpr StringLiteral Strings[] = {"Foo", "Bar"};
EXPECT_EQ(StringRef("Foo"), Strings[0]);
EXPECT_EQ(StringRef("Bar"), Strings[1]);
}
// Check gtest prints StringRef as a string instead of a container of chars.
// The code is in utils/unittest/googletest/internal/custom/gtest-printers.h
TEST(StringRefTest, GTestPrinter) {
EXPECT_EQ(R"("foo")", ::testing::PrintToString(StringRef("foo")));
}
static_assert(std::is_trivially_copyable<StringRef>::value,
"trivially copyable");
} // end anonymous namespace
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