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