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100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
//===- llvm/unittest/ADT/StringRefTest.cpp - StringRef unit tests ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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TEST(StringRefTest, Construction) {
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EXPECT_TRUE(StringRef() == "");
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EXPECT_TRUE(StringRef("hello") == "hello");
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EXPECT_TRUE(StringRef("hello world", 5) == "hello");
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EXPECT_TRUE(StringRef(std::string("hello")) == "hello");
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}
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TEST(StringRefTest, Iteration) {
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StringRef S("hello");
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const char *p = "hello";
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for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
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EXPECT_TRUE(*p == *it);
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}
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TEST(StringRefTest, StringOps) {
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const char *p = "hello";
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EXPECT_EQ(p, StringRef(p, 0).data());
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EXPECT_TRUE(StringRef().empty());
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EXPECT_EQ((size_t) 5, StringRef("hello").size());
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EXPECT_EQ(-1, StringRef("aab").compare("aad"));
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EXPECT_EQ( 0, StringRef("aab").compare("aab"));
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EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
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EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
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EXPECT_EQ( 1, StringRef("aab").compare("aa"));
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}
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TEST(StringRefTest, Operators) {
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EXPECT_TRUE(StringRef() == "");
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EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
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EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
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EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
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EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
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EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
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EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
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EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
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EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
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EXPECT_TRUE(StringRef("aab") == StringRef("aab"));
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EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
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EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
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EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
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EXPECT_EQ('a', StringRef("aab")[1]);
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}
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TEST(StringRefTest, Utilities) {
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StringRef Str("hello");
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EXPECT_TRUE(Str.substr(3) == "lo");
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EXPECT_TRUE(Str.substr(100) == "");
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EXPECT_TRUE(Str.substr(0, 100) == "hello");
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EXPECT_TRUE(Str.substr(4, 10) == "o");
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EXPECT_TRUE(Str.slice(2, 3) == "l");
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EXPECT_TRUE(Str.slice(1, 4) == "ell");
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EXPECT_TRUE(Str.slice(2, 100) == "llo");
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EXPECT_TRUE(Str.slice(2, 1) == "");
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EXPECT_TRUE(Str.slice(10, 20) == "");
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EXPECT_TRUE(Str.split('X') == std::make_pair(StringRef("hello"),
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StringRef("")));
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EXPECT_TRUE(Str.split('e') == std::make_pair(StringRef("h"),
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StringRef("llo")));
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EXPECT_TRUE(Str.split('h') == std::make_pair(StringRef(""),
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StringRef("ello")));
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EXPECT_TRUE(Str.split('o') == std::make_pair(StringRef("hell"),
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StringRef("")));
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EXPECT_TRUE(Str.startswith("he"));
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EXPECT_FALSE(Str.startswith("helloworld"));
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EXPECT_FALSE(Str.startswith("hi"));
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std::string Storage;
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raw_string_ostream OS(Storage);
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OS << StringRef("hello");
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EXPECT_EQ("hello", OS.str());
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EXPECT_TRUE(Str.find('l') == 2);
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EXPECT_TRUE(Str.find('z') == StringRef::npos);
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EXPECT_TRUE(Str.find("helloworld") == StringRef::npos);
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EXPECT_TRUE(Str.find("hello") == 0);
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EXPECT_TRUE(Str.find("ello") == 1);
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EXPECT_TRUE(Str.find("zz") == StringRef::npos);
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}
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} // end anonymous namespace
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