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llvm-6502/unittests/ADT/StringRefTest.cpp
Nick Kledzik 8147752976 Fix layering StringRef copy using BumpPtrAllocator. 
Now to copy a string into a BumpPtrAllocator and get a StringRef to the copy:

   StringRef myCopy = myStr.copy(myAllocator);
   



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200885 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-05 22:22:56 +00:00

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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 "llvm/ADT/StringRef.h"
#include "llvm/ADT/Hashing.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;
}
}
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")));
}
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_lower("aAd"));
EXPECT_EQ( 0, StringRef("AaB").compare_lower("aab"));
EXPECT_EQ( 1, StringRef("AaB").compare_lower("AAA"));
EXPECT_EQ(-1, StringRef("AaB").compare_lower("aaBb"));
EXPECT_EQ(-1, StringRef("AaB").compare_lower("bb"));
EXPECT_EQ( 1, StringRef("aaBb").compare_lower("AaB"));
EXPECT_EQ( 1, StringRef("bb").compare_lower("AaB"));
EXPECT_EQ( 1, StringRef("AaB").compare_lower("aA"));
EXPECT_EQ( 1, StringRef("\xFF").compare_lower("\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'));
}
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);
}
TEST(StringRefTest, Trim) {
StringRef Str0("hello");
StringRef Str1(" hello ");
StringRef Str2(" hello ");
EXPECT_EQ(StringRef("hello"), Str0.rtrim());
EXPECT_EQ(StringRef(" hello"), Str1.rtrim());
EXPECT_EQ(StringRef(" hello"), Str2.rtrim());
EXPECT_EQ(StringRef("hello"), Str0.ltrim());
EXPECT_EQ(StringRef("hello "), Str1.ltrim());
EXPECT_EQ(StringRef("hello "), Str2.ltrim());
EXPECT_EQ(StringRef("hello"), Str0.trim());
EXPECT_EQ(StringRef("hello"), Str1.trim());
EXPECT_EQ(StringRef("hello"), Str2.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(StringRef("\0", 1)));
}
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, StartsWithLower) {
StringRef Str("heLLo");
EXPECT_TRUE(Str.startswith_lower(""));
EXPECT_TRUE(Str.startswith_lower("he"));
EXPECT_TRUE(Str.startswith_lower("hell"));
EXPECT_TRUE(Str.startswith_lower("HELlo"));
EXPECT_FALSE(Str.startswith_lower("helloworld"));
EXPECT_FALSE(Str.startswith_lower("hi"));
}
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, EndsWithLower) {
StringRef Str("heLLo");
EXPECT_TRUE(Str.endswith_lower(""));
EXPECT_TRUE(Str.endswith_lower("lo"));
EXPECT_TRUE(Str.endswith_lower("LO"));
EXPECT_TRUE(Str.endswith_lower("ELlo"));
EXPECT_FALSE(Str.endswith_lower("helloworld"));
EXPECT_FALSE(Str.endswith_lower("hi"));
}
TEST(StringRefTest, Find) {
StringRef Str("hello");
EXPECT_EQ(2U, Str.find('l'));
EXPECT_EQ(StringRef::npos, Str.find('z'));
EXPECT_EQ(StringRef::npos, Str.find("helloworld"));
EXPECT_EQ(0U, Str.find("hello"));
EXPECT_EQ(1U, Str.find("ello"));
EXPECT_EQ(StringRef::npos, Str.find("zz"));
EXPECT_EQ(2U, Str.find("ll", 2));
EXPECT_EQ(StringRef::npos, Str.find("ll", 3));
EXPECT_EQ(0U, Str.find(""));
StringRef LongStr("hellx xello hell ello world foo bar hello");
EXPECT_EQ(36U, LongStr.find("hello"));
EXPECT_EQ(28U, LongStr.find("foo"));
EXPECT_EQ(12U, LongStr.find("hell", 2));
EXPECT_EQ(0U, LongStr.find(""));
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(2U, Str.find_first_of('l'));
EXPECT_EQ(1U, Str.find_first_of("el"));
EXPECT_EQ(StringRef::npos, Str.find_first_of("xyz"));
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"));
}
TEST(StringRefTest, EditDistance) {
StringRef Str("hello");
EXPECT_EQ(2U, Str.edit_distance("hill"));
}
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);
if (static_cast<uint64_t>(Unsigned[i].Expected) == Unsigned[i].Expected) {
ASSERT_FALSE(U64Success);
EXPECT_EQ(U64, Unsigned[i].Expected);
} else {
ASSERT_TRUE(U64Success);
}
}
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);
if (static_cast<int64_t>(Signed[i].Expected) == Signed[i].Expected) {
ASSERT_FALSE(S64Success);
EXPECT_EQ(S64, Signed[i].Expected);
} else {
ASSERT_TRUE(S64Success);
}
}
}
static const char* BadStrings[] = {
"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
};
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);
}
}
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);
}
TEST(StringRefTest, AllocatorCopy) {
BumpPtrAllocator Alloc;
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());
}
} // end anonymous namespace
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