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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <string>
#include <string_view>
#include "base/strings/string_piece.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gurl_base {
template <typename CharT>
class CommonStringPieceTest : public ::testing::Test {
public:
static std::string as_string(const char* input) { return input; }
static const std::string& as_string(const std::string& input) {
return input;
}
};
template <>
class CommonStringPieceTest<char16_t> : public ::testing::Test {
public:
static std::u16string as_string(const char* input) {
return UTF8ToUTF16(input);
}
static std::u16string as_string(const std::string& input) {
return UTF8ToUTF16(input);
}
};
typedef ::testing::Types<char, char16_t> SupportedCharTypes;
TYPED_TEST_SUITE(CommonStringPieceTest, SupportedCharTypes);
TYPED_TEST(CommonStringPieceTest, CheckComparisonOperators) {
#define CMP_Y(op, x, y) \
{ \
std::basic_string<TypeParam> lhs(TestFixture::as_string(x)); \
std::basic_string<TypeParam> rhs(TestFixture::as_string(y)); \
ASSERT_TRUE((BasicStringPiece<TypeParam>((lhs.c_str())) \
op BasicStringPiece<TypeParam>((rhs.c_str())))); \
ASSERT_TRUE(BasicStringPiece<TypeParam>(lhs) op rhs); \
ASSERT_TRUE(lhs op BasicStringPiece<TypeParam>(rhs)); \
ASSERT_TRUE((BasicStringPiece<TypeParam>((lhs.c_str())) \
.compare(BasicStringPiece<TypeParam>((rhs.c_str()))) \
op 0)); \
}
#define CMP_N(op, x, y) \
{ \
std::basic_string<TypeParam> lhs(TestFixture::as_string(x)); \
std::basic_string<TypeParam> rhs(TestFixture::as_string(y)); \
ASSERT_FALSE((BasicStringPiece<TypeParam>((lhs.c_str())) \
op BasicStringPiece<TypeParam>((rhs.c_str())))); \
ASSERT_FALSE(BasicStringPiece<TypeParam>(lhs) op rhs); \
ASSERT_FALSE(lhs op BasicStringPiece<TypeParam>(rhs)); \
ASSERT_FALSE((BasicStringPiece<TypeParam>((lhs.c_str())) \
.compare(BasicStringPiece<TypeParam>((rhs.c_str()))) \
op 0)); \
}
CMP_Y(==, "", "")
CMP_Y(==, "a", "a")
CMP_Y(==, "aa", "aa")
CMP_N(==, "a", "")
CMP_N(==, "", "a")
CMP_N(==, "a", "b")
CMP_N(==, "a", "aa")
CMP_N(==, "aa", "a")
CMP_N(!=, "", "")
CMP_N(!=, "a", "a")
CMP_N(!=, "aa", "aa")
CMP_Y(!=, "a", "")
CMP_Y(!=, "", "a")
CMP_Y(!=, "a", "b")
CMP_Y(!=, "a", "aa")
CMP_Y(!=, "aa", "a")
CMP_Y(<, "a", "b")
CMP_Y(<, "a", "aa")
CMP_Y(<, "aa", "b")
CMP_Y(<, "aa", "bb")
CMP_N(<, "a", "a")
CMP_N(<, "b", "a")
CMP_N(<, "aa", "a")
CMP_N(<, "b", "aa")
CMP_N(<, "bb", "aa")
CMP_Y(<=, "a", "a")
CMP_Y(<=, "a", "b")
CMP_Y(<=, "a", "aa")
CMP_Y(<=, "aa", "b")
CMP_Y(<=, "aa", "bb")
CMP_N(<=, "b", "a")
CMP_N(<=, "aa", "a")
CMP_N(<=, "b", "aa")
CMP_N(<=, "bb", "aa")
CMP_N(>=, "a", "b")
CMP_N(>=, "a", "aa")
CMP_N(>=, "aa", "b")
CMP_N(>=, "aa", "bb")
CMP_Y(>=, "a", "a")
CMP_Y(>=, "b", "a")
CMP_Y(>=, "aa", "a")
CMP_Y(>=, "b", "aa")
CMP_Y(>=, "bb", "aa")
CMP_N(>, "a", "a")
CMP_N(>, "a", "b")
CMP_N(>, "a", "aa")
CMP_N(>, "aa", "b")
CMP_N(>, "aa", "bb")
CMP_Y(>, "b", "a")
CMP_Y(>, "aa", "a")
CMP_Y(>, "b", "aa")
CMP_Y(>, "bb", "aa")
std::string x;
for (int i = 0; i < 256; i++) {
x += 'a';
std::string y = x;
CMP_Y(==, x, y);
for (int j = 0; j < i; j++) {
std::string z = x;
z[j] = 'b'; // Differs in position 'j'
CMP_N(==, x, z);
}
}
#undef CMP_Y
#undef CMP_N
}
TYPED_TEST(CommonStringPieceTest, CheckSTL) {
std::basic_string<TypeParam> alphabet(
TestFixture::as_string("abcdefghijklmnopqrstuvwxyz"));
std::basic_string<TypeParam> abc(TestFixture::as_string("abc"));
std::basic_string<TypeParam> xyz(TestFixture::as_string("xyz"));
std::basic_string<TypeParam> foobar(TestFixture::as_string("foobar"));
BasicStringPiece<TypeParam> a(alphabet);
BasicStringPiece<TypeParam> b(abc);
BasicStringPiece<TypeParam> c(xyz);
BasicStringPiece<TypeParam> d(foobar);
BasicStringPiece<TypeParam> e;
std::basic_string<TypeParam> temp(TestFixture::as_string("123"));
temp += static_cast<TypeParam>(0);
temp += TestFixture::as_string("456");
BasicStringPiece<TypeParam> f(temp);
ASSERT_EQ(a[6], static_cast<TypeParam>('g'));
ASSERT_EQ(b[0], static_cast<TypeParam>('a'));
ASSERT_EQ(c[2], static_cast<TypeParam>('z'));
ASSERT_EQ(f[3], static_cast<TypeParam>('\0'));
ASSERT_EQ(f[5], static_cast<TypeParam>('5'));
ASSERT_EQ(*d.data(), static_cast<TypeParam>('f'));
ASSERT_EQ(d.data()[5], static_cast<TypeParam>('r'));
ASSERT_EQ(e.data(), nullptr);
ASSERT_EQ(*a.begin(), static_cast<TypeParam>('a'));
ASSERT_EQ(*(b.begin() + 2), static_cast<TypeParam>('c'));
ASSERT_EQ(*(c.end() - 1), static_cast<TypeParam>('z'));
ASSERT_EQ(*a.rbegin(), static_cast<TypeParam>('z'));
ASSERT_EQ(*(b.rbegin() + 2), static_cast<TypeParam>('a'));
ASSERT_EQ(*(c.rend() - 1), static_cast<TypeParam>('x'));
ASSERT_EQ(a.rbegin() + 26, a.rend());
ASSERT_EQ(a.size(), 26U);
ASSERT_EQ(b.size(), 3U);
ASSERT_EQ(c.size(), 3U);
ASSERT_EQ(d.size(), 6U);
ASSERT_EQ(e.size(), 0U);
ASSERT_EQ(f.size(), 7U);
ASSERT_TRUE(!d.empty());
ASSERT_TRUE(d.begin() != d.end());
ASSERT_EQ(d.begin() + 6, d.end());
ASSERT_TRUE(e.empty());
ASSERT_EQ(e.begin(), e.end());
d = BasicStringPiece<TypeParam>();
ASSERT_EQ(d.size(), 0U);
ASSERT_TRUE(d.empty());
ASSERT_EQ(d.data(), nullptr);
ASSERT_EQ(d.begin(), d.end());
ASSERT_GE(a.max_size(), a.size());
}
TYPED_TEST(CommonStringPieceTest, CheckFind) {
typedef BasicStringPiece<TypeParam> Piece;
std::basic_string<TypeParam> alphabet(
TestFixture::as_string("abcdefghijklmnopqrstuvwxyz"));
std::basic_string<TypeParam> abc(TestFixture::as_string("abc"));
std::basic_string<TypeParam> xyz(TestFixture::as_string("xyz"));
std::basic_string<TypeParam> foobar(TestFixture::as_string("foobar"));
BasicStringPiece<TypeParam> a(alphabet);
BasicStringPiece<TypeParam> b(abc);
BasicStringPiece<TypeParam> c(xyz);
BasicStringPiece<TypeParam> d(foobar);
d = Piece();
Piece e;
std::basic_string<TypeParam> temp(TestFixture::as_string("123"));
temp.push_back('\0');
temp += TestFixture::as_string("456");
Piece f(temp);
TypeParam buf[4] = {'%', '%', '%', '%'};
ASSERT_EQ(a.copy(buf, 4), 4U);
ASSERT_EQ(buf[0], a[0]);
ASSERT_EQ(buf[1], a[1]);
ASSERT_EQ(buf[2], a[2]);
ASSERT_EQ(buf[3], a[3]);
ASSERT_EQ(a.copy(buf, 3, 7), 3U);
ASSERT_EQ(buf[0], a[7]);
ASSERT_EQ(buf[1], a[8]);
ASSERT_EQ(buf[2], a[9]);
ASSERT_EQ(buf[3], a[3]);
ASSERT_EQ(c.copy(buf, 99), 3U);
ASSERT_EQ(buf[0], c[0]);
ASSERT_EQ(buf[1], c[1]);
ASSERT_EQ(buf[2], c[2]);
ASSERT_EQ(buf[3], a[3]);
ASSERT_EQ(Piece::npos, std::basic_string<TypeParam>::npos);
ASSERT_EQ(a.find(b), 0U);
ASSERT_EQ(a.find(b, 1), Piece::npos);
ASSERT_EQ(a.find(c), 23U);
ASSERT_EQ(a.find(c, 9), 23U);
ASSERT_EQ(a.find(c, Piece::npos), Piece::npos);
ASSERT_EQ(b.find(c), Piece::npos);
ASSERT_EQ(b.find(c, Piece::npos), Piece::npos);
ASSERT_EQ(a.find(d), 0U);
ASSERT_EQ(a.find(e), 0U);
ASSERT_EQ(a.find(d, 12), 12U);
ASSERT_EQ(a.find(e, 17), 17U);
std::basic_string<TypeParam> not_found(
TestFixture::as_string("xx not found bb"));
Piece g(not_found);
ASSERT_EQ(a.find(g), Piece::npos);
// empty string nonsense
ASSERT_EQ(d.find(b), Piece::npos);
ASSERT_EQ(e.find(b), Piece::npos);
ASSERT_EQ(d.find(b, 4), Piece::npos);
ASSERT_EQ(e.find(b, 7), Piece::npos);
size_t empty_search_pos =
std::basic_string<TypeParam>().find(std::basic_string<TypeParam>());
ASSERT_EQ(d.find(d), empty_search_pos);
ASSERT_EQ(d.find(e), empty_search_pos);
ASSERT_EQ(e.find(d), empty_search_pos);
ASSERT_EQ(e.find(e), empty_search_pos);
ASSERT_EQ(d.find(d, 4), std::string().find(std::string(), 4));
ASSERT_EQ(d.find(e, 4), std::string().find(std::string(), 4));
ASSERT_EQ(e.find(d, 4), std::string().find(std::string(), 4));
ASSERT_EQ(e.find(e, 4), std::string().find(std::string(), 4));
constexpr TypeParam kNul = '\0';
ASSERT_EQ(a.find('a'), 0U);
ASSERT_EQ(a.find('c'), 2U);
ASSERT_EQ(a.find('z'), 25U);
ASSERT_EQ(a.find('$'), Piece::npos);
ASSERT_EQ(a.find(kNul), Piece::npos);
ASSERT_EQ(f.find(kNul), 3U);
ASSERT_EQ(f.find('3'), 2U);
ASSERT_EQ(f.find('5'), 5U);
ASSERT_EQ(g.find('o'), 4U);
ASSERT_EQ(g.find('o', 4), 4U);
ASSERT_EQ(g.find('o', 5), 8U);
ASSERT_EQ(a.find('b', 5), Piece::npos);
// empty string nonsense
ASSERT_EQ(d.find(kNul), Piece::npos);
ASSERT_EQ(e.find(kNul), Piece::npos);
ASSERT_EQ(d.find(kNul, 4), Piece::npos);
ASSERT_EQ(e.find(kNul, 7), Piece::npos);
ASSERT_EQ(d.find('x'), Piece::npos);
ASSERT_EQ(e.find('x'), Piece::npos);
ASSERT_EQ(d.find('x', 4), Piece::npos);
ASSERT_EQ(e.find('x', 7), Piece::npos);
ASSERT_EQ(a.find(b.data(), 1, 0), 1U);
ASSERT_EQ(a.find(c.data(), 9, 0), 9U);
ASSERT_EQ(a.find(c.data(), Piece::npos, 0), Piece::npos);
ASSERT_EQ(b.find(c.data(), Piece::npos, 0), Piece::npos);
// empty string nonsense
ASSERT_EQ(d.find(b.data(), 4, 0), Piece::npos);
ASSERT_EQ(e.find(b.data(), 7, 0), Piece::npos);
ASSERT_EQ(a.find(b.data(), 1), Piece::npos);
ASSERT_EQ(a.find(c.data(), 9), 23U);
ASSERT_EQ(a.find(c.data(), Piece::npos), Piece::npos);
ASSERT_EQ(b.find(c.data(), Piece::npos), Piece::npos);
// empty string nonsense
ASSERT_EQ(d.find(b.data(), 4), Piece::npos);
ASSERT_EQ(e.find(b.data(), 7), Piece::npos);
ASSERT_EQ(a.rfind(b), 0U);
ASSERT_EQ(a.rfind(b, 1), 0U);
ASSERT_EQ(a.rfind(c), 23U);
ASSERT_EQ(a.rfind(c, 22U), Piece::npos);
ASSERT_EQ(a.rfind(c, 1U), Piece::npos);
ASSERT_EQ(a.rfind(c, 0U), Piece::npos);
ASSERT_EQ(b.rfind(c), Piece::npos);
ASSERT_EQ(b.rfind(c, 0U), Piece::npos);
ASSERT_EQ(a.rfind(d),
static_cast<size_t>(a.rfind(std::basic_string<TypeParam>())));
ASSERT_EQ(a.rfind(e), a.rfind(std::basic_string<TypeParam>()));
ASSERT_EQ(a.rfind(d),
static_cast<size_t>(std::basic_string<TypeParam>(a).rfind(
std::basic_string<TypeParam>())));
ASSERT_EQ(a.rfind(e), std::basic_string<TypeParam>(a).rfind(
std::basic_string<TypeParam>()));
ASSERT_EQ(a.rfind(d, 12), 12U);
ASSERT_EQ(a.rfind(e, 17), 17U);
ASSERT_EQ(a.rfind(g), Piece::npos);
ASSERT_EQ(d.rfind(b), Piece::npos);
ASSERT_EQ(e.rfind(b), Piece::npos);
ASSERT_EQ(d.rfind(b, 4), Piece::npos);
ASSERT_EQ(e.rfind(b, 7), Piece::npos);
// empty string nonsense
ASSERT_EQ(d.rfind(d, 4), std::string().rfind(std::string()));
ASSERT_EQ(e.rfind(d, 7), std::string().rfind(std::string()));
ASSERT_EQ(d.rfind(e, 4), std::string().rfind(std::string()));
ASSERT_EQ(e.rfind(e, 7), std::string().rfind(std::string()));
ASSERT_EQ(d.rfind(d), std::string().rfind(std::string()));
ASSERT_EQ(e.rfind(d), std::string().rfind(std::string()));
ASSERT_EQ(d.rfind(e), std::string().rfind(std::string()));
ASSERT_EQ(e.rfind(e), std::string().rfind(std::string()));
ASSERT_EQ(g.rfind('o'), 8U);
ASSERT_EQ(g.rfind('q'), Piece::npos);
ASSERT_EQ(g.rfind('o', 8), 8U);
ASSERT_EQ(g.rfind('o', 7), 4U);
ASSERT_EQ(g.rfind('o', 3), Piece::npos);
ASSERT_EQ(f.rfind(kNul), 3U);
ASSERT_EQ(f.rfind(kNul, 12), 3U);
ASSERT_EQ(f.rfind('3'), 2U);
ASSERT_EQ(f.rfind('5'), 5U);
// empty string nonsense
ASSERT_EQ(d.rfind('o'), Piece::npos);
ASSERT_EQ(e.rfind('o'), Piece::npos);
ASSERT_EQ(d.rfind('o', 4), Piece::npos);
ASSERT_EQ(e.rfind('o', 7), Piece::npos);
ASSERT_EQ(a.rfind(b.data(), 1, 0), 1U);
ASSERT_EQ(a.rfind(c.data(), 22U, 0), 22U);
ASSERT_EQ(a.rfind(c.data(), 1U, 0), 1U);
ASSERT_EQ(a.rfind(c.data(), 0U, 0), 0U);
ASSERT_EQ(b.rfind(c.data(), 0U, 0), 0U);
ASSERT_EQ(d.rfind(b.data(), 4, 0), 0U);
ASSERT_EQ(e.rfind(b.data(), 7, 0), 0U);
std::basic_string<TypeParam> one_two_three_four(
TestFixture::as_string("one,two:three;four"));
std::basic_string<TypeParam> comma_colon(TestFixture::as_string(",:"));
ASSERT_EQ(3U, Piece(one_two_three_four).find_first_of(comma_colon));
ASSERT_EQ(a.find_first_of(b), 0U);
ASSERT_EQ(a.find_first_of(b, 0), 0U);
ASSERT_EQ(a.find_first_of(b, 1), 1U);
ASSERT_EQ(a.find_first_of(b, 2), 2U);
ASSERT_EQ(a.find_first_of(b, 3), Piece::npos);
ASSERT_EQ(a.find_first_of(c), 23U);
ASSERT_EQ(a.find_first_of(c, 23), 23U);
ASSERT_EQ(a.find_first_of(c, 24), 24U);
ASSERT_EQ(a.find_first_of(c, 25), 25U);
ASSERT_EQ(a.find_first_of(c, 26), Piece::npos);
ASSERT_EQ(g.find_first_of(b), 13U);
ASSERT_EQ(g.find_first_of(c), 0U);
ASSERT_EQ(a.find_first_of(f), Piece::npos);
ASSERT_EQ(f.find_first_of(a), Piece::npos);
// empty string nonsense
ASSERT_EQ(a.find_first_of(d), Piece::npos);
ASSERT_EQ(a.find_first_of(e), Piece::npos);
ASSERT_EQ(d.find_first_of(b), Piece::npos);
ASSERT_EQ(e.find_first_of(b), Piece::npos);
ASSERT_EQ(d.find_first_of(d), Piece::npos);
ASSERT_EQ(e.find_first_of(d), Piece::npos);
ASSERT_EQ(d.find_first_of(e), Piece::npos);
ASSERT_EQ(e.find_first_of(e), Piece::npos);
ASSERT_EQ(a.find_first_not_of(b), 3U);
ASSERT_EQ(a.find_first_not_of(c), 0U);
ASSERT_EQ(b.find_first_not_of(a), Piece::npos);
ASSERT_EQ(c.find_first_not_of(a), Piece::npos);
ASSERT_EQ(f.find_first_not_of(a), 0U);
ASSERT_EQ(a.find_first_not_of(f), 0U);
ASSERT_EQ(a.find_first_not_of(d), 0U);
ASSERT_EQ(a.find_first_not_of(e), 0U);
ASSERT_EQ(a.find_first_not_of(d, 1), 1U);
ASSERT_EQ(a.find_first_not_of(e, 1), 1U);
ASSERT_EQ(a.find_first_not_of(d, a.size()), Piece::npos);
ASSERT_EQ(a.find_first_not_of(e, a.size()), Piece::npos);
// empty string nonsense
ASSERT_EQ(d.find_first_not_of(a), Piece::npos);
ASSERT_EQ(e.find_first_not_of(a), Piece::npos);
ASSERT_EQ(d.find_first_not_of(d), Piece::npos);
ASSERT_EQ(e.find_first_not_of(d), Piece::npos);
ASSERT_EQ(d.find_first_not_of(e), Piece::npos);
ASSERT_EQ(e.find_first_not_of(e), Piece::npos);
std::basic_string<TypeParam> equals(TestFixture::as_string("===="));
Piece h(equals);
ASSERT_EQ(h.find_first_not_of('='), Piece::npos);
ASSERT_EQ(h.find_first_not_of('=', 3), Piece::npos);
ASSERT_EQ(h.find_first_not_of(kNul), 0U);
ASSERT_EQ(g.find_first_not_of('x'), 2U);
ASSERT_EQ(f.find_first_not_of(kNul), 0U);
ASSERT_EQ(f.find_first_not_of(kNul, 3), 4U);
ASSERT_EQ(f.find_first_not_of(kNul, 2), 2U);
// empty string nonsense
ASSERT_EQ(d.find_first_not_of('x'), Piece::npos);
ASSERT_EQ(e.find_first_not_of('x'), Piece::npos);
ASSERT_EQ(d.find_first_not_of(kNul), Piece::npos);
ASSERT_EQ(e.find_first_not_of(kNul), Piece::npos);
// Piece g("xx not found bb");
std::basic_string<TypeParam> fifty_six(TestFixture::as_string("56"));
Piece i(fifty_six);
ASSERT_EQ(h.find_last_of(a), Piece::npos);
ASSERT_EQ(g.find_last_of(a), g.size()-1);
ASSERT_EQ(a.find_last_of(b), 2U);
ASSERT_EQ(a.find_last_of(c), a.size()-1);
ASSERT_EQ(f.find_last_of(i), 6U);
ASSERT_EQ(a.find_last_of('a'), 0U);
ASSERT_EQ(a.find_last_of('b'), 1U);
ASSERT_EQ(a.find_last_of('z'), 25U);
ASSERT_EQ(a.find_last_of('a', 5), 0U);
ASSERT_EQ(a.find_last_of('b', 5), 1U);
ASSERT_EQ(a.find_last_of('b', 0), Piece::npos);
ASSERT_EQ(a.find_last_of('z', 25), 25U);
ASSERT_EQ(a.find_last_of('z', 24), Piece::npos);
ASSERT_EQ(f.find_last_of(i, 5), 5U);
ASSERT_EQ(f.find_last_of(i, 6), 6U);
ASSERT_EQ(f.find_last_of(a, 4), Piece::npos);
// empty string nonsense
ASSERT_EQ(f.find_last_of(d), Piece::npos);
ASSERT_EQ(f.find_last_of(e), Piece::npos);
ASSERT_EQ(f.find_last_of(d, 4), Piece::npos);
ASSERT_EQ(f.find_last_of(e, 4), Piece::npos);
ASSERT_EQ(d.find_last_of(d), Piece::npos);
ASSERT_EQ(d.find_last_of(e), Piece::npos);
ASSERT_EQ(e.find_last_of(d), Piece::npos);
ASSERT_EQ(e.find_last_of(e), Piece::npos);
ASSERT_EQ(d.find_last_of(f), Piece::npos);
ASSERT_EQ(e.find_last_of(f), Piece::npos);
ASSERT_EQ(d.find_last_of(d, 4), Piece::npos);
ASSERT_EQ(d.find_last_of(e, 4), Piece::npos);
ASSERT_EQ(e.find_last_of(d, 4), Piece::npos);
ASSERT_EQ(e.find_last_of(e, 4), Piece::npos);
ASSERT_EQ(d.find_last_of(f, 4), Piece::npos);
ASSERT_EQ(e.find_last_of(f, 4), Piece::npos);
ASSERT_EQ(a.find_last_not_of(b), a.size()-1);
ASSERT_EQ(a.find_last_not_of(c), 22U);
ASSERT_EQ(b.find_last_not_of(a), Piece::npos);
ASSERT_EQ(b.find_last_not_of(b), Piece::npos);
ASSERT_EQ(f.find_last_not_of(i), 4U);
ASSERT_EQ(a.find_last_not_of(c, 24), 22U);
ASSERT_EQ(a.find_last_not_of(b, 3), 3U);
ASSERT_EQ(a.find_last_not_of(b, 2), Piece::npos);
// empty string nonsense
ASSERT_EQ(f.find_last_not_of(d), f.size()-1);
ASSERT_EQ(f.find_last_not_of(e), f.size()-1);
ASSERT_EQ(f.find_last_not_of(d, 4), 4U);
ASSERT_EQ(f.find_last_not_of(e, 4), 4U);
ASSERT_EQ(d.find_last_not_of(d), Piece::npos);
ASSERT_EQ(d.find_last_not_of(e), Piece::npos);
ASSERT_EQ(e.find_last_not_of(d), Piece::npos);
ASSERT_EQ(e.find_last_not_of(e), Piece::npos);
ASSERT_EQ(d.find_last_not_of(f), Piece::npos);
ASSERT_EQ(e.find_last_not_of(f), Piece::npos);
ASSERT_EQ(d.find_last_not_of(d, 4), Piece::npos);
ASSERT_EQ(d.find_last_not_of(e, 4), Piece::npos);
ASSERT_EQ(e.find_last_not_of(d, 4), Piece::npos);
ASSERT_EQ(e.find_last_not_of(e, 4), Piece::npos);
ASSERT_EQ(d.find_last_not_of(f, 4), Piece::npos);
ASSERT_EQ(e.find_last_not_of(f, 4), Piece::npos);
ASSERT_EQ(h.find_last_not_of('x'), h.size() - 1);
ASSERT_EQ(h.find_last_not_of('='), Piece::npos);
ASSERT_EQ(b.find_last_not_of('c'), 1U);
ASSERT_EQ(h.find_last_not_of('x', 2), 2U);
ASSERT_EQ(h.find_last_not_of('=', 2), Piece::npos);
ASSERT_EQ(b.find_last_not_of('b', 1), 0U);
// empty string nonsense
ASSERT_EQ(d.find_last_not_of('x'), Piece::npos);
ASSERT_EQ(e.find_last_not_of('x'), Piece::npos);
ASSERT_EQ(d.find_last_not_of(kNul), Piece::npos);
ASSERT_EQ(e.find_last_not_of(kNul), Piece::npos);
ASSERT_EQ(a.substr(0, 3), b);
ASSERT_EQ(a.substr(23), c);
ASSERT_EQ(a.substr(23, 3), c);
ASSERT_EQ(a.substr(23, 99), c);
ASSERT_EQ(a.substr(), a);
ASSERT_EQ(a.substr(0), a);
ASSERT_EQ(a.substr(3, 2), TestFixture::as_string("de"));
ASSERT_EQ(d.substr(0, 99), e);
}
TYPED_TEST(CommonStringPieceTest, CheckCustom) {
std::basic_string<TypeParam> foobar(TestFixture::as_string("foobar"));
BasicStringPiece<TypeParam> a(foobar);
std::basic_string<TypeParam> s1(TestFixture::as_string("123"));
s1 += static_cast<TypeParam>('\0');
s1 += TestFixture::as_string("456");
[[maybe_unused]] BasicStringPiece<TypeParam> b(s1);
BasicStringPiece<TypeParam> e;
std::basic_string<TypeParam> s2;
// remove_prefix
BasicStringPiece<TypeParam> c(a);
c.remove_prefix(3);
ASSERT_EQ(c, TestFixture::as_string("bar"));
c = a;
c.remove_prefix(0);
ASSERT_EQ(c, a);
c.remove_prefix(c.size());
ASSERT_EQ(c, e);
// remove_suffix
c = a;
c.remove_suffix(3);
ASSERT_EQ(c, TestFixture::as_string("foo"));
c = a;
c.remove_suffix(0);
ASSERT_EQ(c, a);
c.remove_suffix(c.size());
ASSERT_EQ(c, e);
// assignment
c = foobar.c_str();
ASSERT_EQ(c, a);
c = {foobar.c_str(), 6};
ASSERT_EQ(c, a);
c = {foobar.c_str(), 0};
ASSERT_EQ(c, e);
c = {foobar.c_str(), 7}; // Note, has an embedded NULL
ASSERT_NE(c, a);
// operator STRING_TYPE()
std::basic_string<TypeParam> s5(std::basic_string<TypeParam>(a).c_str(),
7); // Note, has an embedded NULL
ASSERT_EQ(c, s5);
std::basic_string<TypeParam> s6(e);
ASSERT_TRUE(s6.empty());
}
TEST(StringPieceTest, CheckCustom) {
StringPiece a("foobar");
std::string s1("123");
s1 += '\0';
s1 += "456";
[[maybe_unused]] StringPiece b(s1);
StringPiece e;
std::string s2;
StringPiece c;
c = {"foobar", 6};
ASSERT_EQ(c, a);
c = {"foobar", 0};
ASSERT_EQ(c, e);
c = {"foobar", 7};
ASSERT_NE(c, a);
}
TYPED_TEST(CommonStringPieceTest, CheckNULL) {
BasicStringPiece<TypeParam> s;
ASSERT_EQ(s.data(), nullptr);
ASSERT_EQ(s.size(), 0U);
std::basic_string<TypeParam> str(s);
ASSERT_EQ(str.length(), 0U);
ASSERT_EQ(str, std::basic_string<TypeParam>());
}
TYPED_TEST(CommonStringPieceTest, CheckComparisons2) {
std::basic_string<TypeParam> alphabet(
TestFixture::as_string("abcdefghijklmnopqrstuvwxyz"));
std::basic_string<TypeParam> alphabet_z(
TestFixture::as_string("abcdefghijklmnopqrstuvwxyzz"));
std::basic_string<TypeParam> alphabet_y(
TestFixture::as_string("abcdefghijklmnopqrstuvwxyy"));
BasicStringPiece<TypeParam> abc(alphabet);
// check comparison operations on strings longer than 4 bytes.
ASSERT_EQ(abc, BasicStringPiece<TypeParam>(alphabet));
ASSERT_EQ(abc.compare(BasicStringPiece<TypeParam>(alphabet)), 0);
ASSERT_TRUE(abc < BasicStringPiece<TypeParam>(alphabet_z));
ASSERT_LT(abc.compare(BasicStringPiece<TypeParam>(alphabet_z)), 0);
ASSERT_TRUE(abc > BasicStringPiece<TypeParam>(alphabet_y));
ASSERT_GT(abc.compare(BasicStringPiece<TypeParam>(alphabet_y)), 0);
}
TYPED_TEST(CommonStringPieceTest, StringCompareNotAmbiguous) {
ASSERT_TRUE(TestFixture::as_string("hello").c_str() ==
TestFixture::as_string("hello"));
ASSERT_TRUE(TestFixture::as_string("hello").c_str() <
TestFixture::as_string("world"));
}
TYPED_TEST(CommonStringPieceTest, HeterogenousStringPieceEquals) {
std::basic_string<TypeParam> hello(TestFixture::as_string("hello"));
ASSERT_EQ(BasicStringPiece<TypeParam>(hello), hello);
ASSERT_EQ(hello.c_str(), BasicStringPiece<TypeParam>(hello));
}
// std::u16string-specific stuff
TEST(StringPiece16Test, CheckSTL) {
// Check some non-ascii characters.
std::u16string fifth(u"123");
fifth.push_back(0x0000);
fifth.push_back(0xd8c5);
fifth.push_back(0xdffe);
StringPiece16 f(fifth);
ASSERT_EQ(f[3], '\0');
ASSERT_EQ(f[5], 0xdffe);
ASSERT_EQ(f.size(), 6U);
}
TEST(StringPiece16Test, CheckConversion) {
// Make sure that we can convert from UTF8 to UTF16 and back. We use a
// character (G clef) outside the BMP to test this.
const char* kTest = "\U0001D11E";
ASSERT_EQ(UTF16ToUTF8(UTF8ToUTF16(kTest)), kTest);
}
TYPED_TEST(CommonStringPieceTest, CheckConstructors) {
std::basic_string<TypeParam> str(TestFixture::as_string("hello world"));
std::basic_string<TypeParam> empty;
ASSERT_EQ(str, BasicStringPiece<TypeParam>(str));
ASSERT_EQ(str, BasicStringPiece<TypeParam>(str.c_str()));
ASSERT_TRUE(TestFixture::as_string("hello") ==
BasicStringPiece<TypeParam>(str.c_str(), 5));
ASSERT_EQ(
empty,
BasicStringPiece<TypeParam>(
str.c_str(),
static_cast<typename BasicStringPiece<TypeParam>::size_type>(0)));
ASSERT_EQ(empty, BasicStringPiece<TypeParam>());
ASSERT_TRUE(
empty ==
BasicStringPiece<TypeParam>(
nullptr,
static_cast<typename BasicStringPiece<TypeParam>::size_type>(0)));
ASSERT_EQ(empty, BasicStringPiece<TypeParam>());
ASSERT_EQ(empty, BasicStringPiece<TypeParam>(empty));
}
TEST(StringPieceTest, ConstexprCtor) {
{
constexpr StringPiece piece;
std::ignore = piece;
}
{
constexpr StringPiece piece("abc");
std::ignore = piece;
}
{
constexpr StringPiece piece("abc", 2);
std::ignore = piece;
}
}
// Chromium development assumes StringPiece (which is std::string_view) is
// implemented with an STL that enables hardening checks. We treat bugs that
// trigger one of these conditions as functional rather than security bugs. If
// this test fails on some embedder, it should not be disabled. Instead, the
// embedder should fix their STL or build configuration to enable corresponding
// hardening checks.
//
// See https://chromium.googlesource.com/chromium/src/+/main/docs/security/faq.md#indexing-a-container-out-of-bounds-hits-a-libcpp_verbose_abort_is-this-a-security-bug
TEST(StringPieceTest, OutOfBoundsDeath) {
{
constexpr StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece[0], "");
}
{
constexpr StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece.front(), "");
}
{
constexpr StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece.back(), "");
}
{
StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece.remove_suffix(1), "");
}
{
StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece.remove_prefix(1), "");
}
{
StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece.copy(nullptr, 0, 1), "");
}
{
StringPiece piece;
ASSERT_DEATH_IF_SUPPORTED(piece.substr(1), "");
}
}
TEST(StringPieceTest, InvalidLengthDeath) {
int length = -1;
ASSERT_DEATH_IF_SUPPORTED({ StringPiece piece("hello", length); }, "");
}
TEST(StringPieceTest, ConstexprData) {
{
constexpr StringPiece piece;
static_assert(piece.data() == nullptr, "");
}
{
constexpr StringPiece piece("abc");
static_assert(piece.data()[0] == 'a', "");
static_assert(piece.data()[1] == 'b', "");
static_assert(piece.data()[2] == 'c', "");
}
{
constexpr StringPiece piece("def", 2);
static_assert(piece.data()[0] == 'd', "");
static_assert(piece.data()[1] == 'e', "");
}
}
TEST(StringPieceTest, ConstexprSize) {
{
constexpr StringPiece piece;
static_assert(piece.size() == 0, "");
}
{
constexpr StringPiece piece("abc");
static_assert(piece.size() == 3, "");
}
{
constexpr StringPiece piece("def", 2);
static_assert(piece.size() == 2, "");
}
}
TEST(StringPieceTest, ConstexprFront) {
static_assert(StringPiece("abc").front() == 'a', "");
}
TEST(StringPieceTest, ConstexprBack) {
static_assert(StringPiece("abc").back() == 'c', "");
}
TEST(StringPieceTest, Compare) {
constexpr StringPiece piece = "def";
static_assert(piece.compare("ab") == 1, "");
static_assert(piece.compare("abc") == 1, "");
static_assert(piece.compare("abcd") == 1, "");
static_assert(piece.compare("de") == 1, "");
static_assert(piece.compare("def") == 0, "");
static_assert(piece.compare("defg") == -1, "");
static_assert(piece.compare("gh") == -1, "");
static_assert(piece.compare("ghi") == -1, "");
static_assert(piece.compare("ghij") == -1, "");
static_assert(piece.compare(0, 0, "") == 0, "");
static_assert(piece.compare(0, 1, "d") == 0, "");
static_assert(piece.compare(0, 2, "de") == 0, "");
static_assert(piece.compare(0, 3, "def") == 0, "");
static_assert(piece.compare(1, 0, "") == 0, "");
static_assert(piece.compare(1, 1, "e") == 0, "");
static_assert(piece.compare(1, 2, "ef") == 0, "");
static_assert(piece.compare(1, 3, "ef") == 0, "");
static_assert(piece.compare(2, 0, "") == 0, "");
static_assert(piece.compare(2, 1, "f") == 0, "");
static_assert(piece.compare(2, 2, "f") == 0, "");
static_assert(piece.compare(2, 3, "f") == 0, "");
static_assert(piece.compare(3, 0, "") == 0, "");
static_assert(piece.compare(3, 1, "") == 0, "");
static_assert(piece.compare(3, 2, "") == 0, "");
static_assert(piece.compare(3, 3, "") == 0, "");
static_assert(piece.compare(0, 0, "def", 0) == 0, "");
static_assert(piece.compare(0, 1, "def", 1) == 0, "");
static_assert(piece.compare(0, 2, "def", 2) == 0, "");
static_assert(piece.compare(0, 3, "def", 3) == 0, "");
static_assert(piece.compare(1, 0, "ef", 0) == 0, "");
static_assert(piece.compare(1, 1, "ef", 1) == 0, "");
static_assert(piece.compare(1, 2, "ef", 2) == 0, "");
static_assert(piece.compare(1, 3, "ef", 2) == 0, "");
static_assert(piece.compare(2, 0, "f", 0) == 0, "");
static_assert(piece.compare(2, 1, "f", 1) == 0, "");
static_assert(piece.compare(2, 2, "f", 1) == 0, "");
static_assert(piece.compare(2, 3, "f", 1) == 0, "");
static_assert(piece.compare(3, 0, "", 0) == 0, "");
static_assert(piece.compare(3, 1, "", 0) == 0, "");
static_assert(piece.compare(3, 2, "", 0) == 0, "");
static_assert(piece.compare(3, 3, "", 0) == 0, "");
static_assert(piece.compare(0, 0, "def", 0, 0) == 0, "");
static_assert(piece.compare(0, 1, "def", 0, 1) == 0, "");
static_assert(piece.compare(0, 2, "def", 0, 2) == 0, "");
static_assert(piece.compare(0, 3, "def", 0, 3) == 0, "");
static_assert(piece.compare(1, 0, "def", 1, 0) == 0, "");
static_assert(piece.compare(1, 1, "def", 1, 1) == 0, "");
static_assert(piece.compare(1, 2, "def", 1, 2) == 0, "");
static_assert(piece.compare(1, 3, "def", 1, 3) == 0, "");
static_assert(piece.compare(2, 0, "def", 2, 0) == 0, "");
static_assert(piece.compare(2, 1, "def", 2, 1) == 0, "");
static_assert(piece.compare(2, 2, "def", 2, 2) == 0, "");
static_assert(piece.compare(2, 3, "def", 2, 3) == 0, "");
static_assert(piece.compare(3, 0, "def", 3, 0) == 0, "");
static_assert(piece.compare(3, 1, "def", 3, 1) == 0, "");
static_assert(piece.compare(3, 2, "def", 3, 2) == 0, "");
static_assert(piece.compare(3, 3, "def", 3, 3) == 0, "");
}
TEST(StringPieceTest, Substr) {
constexpr StringPiece piece = "abcdefghijklmnopqrstuvwxyz";
static_assert(piece.substr(0, 2) == "ab", "");
static_assert(piece.substr(0, 3) == "abc", "");
static_assert(piece.substr(0, 4) == "abcd", "");
static_assert(piece.substr(3, 2) == "de", "");
static_assert(piece.substr(3, 3) == "def", "");
static_assert(piece.substr(23) == "xyz", "");
static_assert(piece.substr(23, 3) == "xyz", "");
static_assert(piece.substr(23, 99) == "xyz", "");
static_assert(piece.substr() == piece, "");
static_assert(piece.substr(0) == piece, "");
static_assert(piece.substr(0, 99) == piece, "");
}
TEST(StringPieceTest, Find) {
constexpr StringPiece foobar("foobar", 6);
constexpr StringPiece foo = foobar.substr(0, 3);
constexpr StringPiece bar = foobar.substr(3);
// find
static_assert(foobar.find(bar, 0) == 3, "");
static_assert(foobar.find('o', 0) == 1, "");
static_assert(foobar.find("ox", 0, 1) == 1, "");
static_assert(foobar.find("ox", 0) == StringPiece::npos, "");
// rfind
static_assert(foobar.rfind(bar, 5) == 3, "");
static_assert(foobar.rfind('o', 5) == 2, "");
static_assert(foobar.rfind("ox", 5, 1) == 2, "");
static_assert(foobar.rfind("ox", 5) == StringPiece::npos, "");
// find_first_of
static_assert(foobar.find_first_of(foo, 2) == 2, "");
static_assert(foobar.find_first_of('o', 2) == 2, "");
static_assert(foobar.find_first_of("ox", 2, 2) == 2, "");
static_assert(foobar.find_first_of("ox", 2) == 2, "");
// find_last_of
static_assert(foobar.find_last_of(foo, 5) == 2, "");
static_assert(foobar.find_last_of('o', 5) == 2, "");
static_assert(foobar.find_last_of("ox", 5, 2) == 2, "");
static_assert(foobar.find_last_of("ox", 5) == 2, "");
// find_first_not_of
static_assert(foobar.find_first_not_of(foo, 2) == 3, "");
static_assert(foobar.find_first_not_of('o', 2) == 3, "");
static_assert(foobar.find_first_not_of("ox", 2, 2) == 3, "");
static_assert(foobar.find_first_not_of("ox", 2) == 3, "");
// find_last_not_of
static_assert(foobar.find_last_not_of(bar, 5) == 2, "");
static_assert(foobar.find_last_not_of('a', 4) == 3, "");
static_assert(foobar.find_last_not_of("ox", 2, 2) == 0, "");
static_assert(foobar.find_last_not_of("ox", 2) == 0, "");
}
// Test that `gurl_base::StringPiece` and `std::string_view` are interoperable.
TEST(StringPieceTest, StringPieceToStringView) {
constexpr StringPiece kPiece = "foo";
constexpr std::string_view kView = kPiece;
static_assert(kPiece.data() == kView.data());
static_assert(kPiece.size() == kView.size());
}
TEST(StringPieceTest, StringViewToStringPiece) {
constexpr std::string_view kView = "bar";
constexpr StringPiece kPiece = kView;
static_assert(kView.data() == kPiece.data());
static_assert(kView.size() == kPiece.size());
}
} // namespace base