StringRefTest.cpp revision 4cf95d75c65f37677d306952b0d2306bc6d20b1f 
1//===- llvm/unittest/ADT/StringRefTest.cpp - StringRef unit tests ---------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "gtest/gtest.h"
11#include "llvm/ADT/StringRef.h"
12using namespace llvm;
13
14namespace {
15
16TEST(StringRefTest, Construction) {
17  EXPECT_TRUE(StringRef() == "");
18  EXPECT_TRUE(StringRef("hello") == "hello");
19  EXPECT_TRUE(StringRef("hello world", 5) == "hello");
20  EXPECT_TRUE(StringRef(std::string("hello")) == "hello");
21}
22
23TEST(StringRefTest, Iteration) {
24  StringRef S("hello");
25  const char *p = "hello";
26  for (const char *it = S.begin(), *ie = S.end(); it != ie; ++it, ++p)
27    EXPECT_TRUE(*p == *it);
28}
29
30TEST(StringRefTest, StringOps) {
31  const char *p = "hello";
32  EXPECT_EQ(p, StringRef(p, 0).data());
33  EXPECT_TRUE(StringRef().empty());
34  EXPECT_EQ((size_t) 5, StringRef("hello").size());
35  EXPECT_EQ(-1, StringRef("aab").compare("aad"));
36  EXPECT_EQ( 0, StringRef("aab").compare("aab"));
37  EXPECT_EQ( 1, StringRef("aab").compare("aaa"));
38  EXPECT_EQ(-1, StringRef("aab").compare("aabb"));
39  EXPECT_EQ( 1, StringRef("aab").compare("aa"));
40}
41
42TEST(StringRefTest, Operators) {
43  EXPECT_TRUE(StringRef() == "");
44  EXPECT_TRUE(StringRef("aab") < StringRef("aad"));
45  EXPECT_FALSE(StringRef("aab") < StringRef("aab"));
46  EXPECT_TRUE(StringRef("aab") <= StringRef("aab"));
47  EXPECT_FALSE(StringRef("aab") <= StringRef("aaa"));
48  EXPECT_TRUE(StringRef("aad") > StringRef("aab"));
49  EXPECT_FALSE(StringRef("aab") > StringRef("aab"));
50  EXPECT_TRUE(StringRef("aab") >= StringRef("aab"));
51  EXPECT_FALSE(StringRef("aaa") >= StringRef("aab"));
52  EXPECT_TRUE(StringRef("aab") == StringRef("aab"));
53  EXPECT_FALSE(StringRef("aab") == StringRef("aac"));
54  EXPECT_FALSE(StringRef("aab") != StringRef("aab"));
55  EXPECT_TRUE(StringRef("aab") != StringRef("aac"));
56  EXPECT_EQ('a', StringRef("aab")[1]);
57}
58
59} // end anonymous namespace
60