Abseil Common Libraries (C++) (grcp 依赖)
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192 lines
7.3 KiB
192 lines
7.3 KiB
// Copyright 2017 The Abseil Authors. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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#include "absl/strings/substitute.h" |
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#include <cstdint> |
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#include "gtest/gtest.h" |
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#include "absl/strings/str_cat.h" |
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namespace { |
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TEST(SubstituteTest, Substitute) { |
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// Basic. |
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EXPECT_EQ("Hello, world!", absl::Substitute("$0, $1!", "Hello", "world")); |
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// Non-char* types. |
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EXPECT_EQ("123 0.2 0.1 foo true false x", |
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absl::Substitute("$0 $1 $2 $3 $4 $5 $6", 123, 0.2, 0.1f, |
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std::string("foo"), true, false, 'x')); |
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// All int types. |
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EXPECT_EQ( |
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"-32767 65535 " |
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"-1234567890 3234567890 " |
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"-1234567890 3234567890 " |
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"-1234567890123456789 9234567890123456789", |
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absl::Substitute( |
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"$0 $1 $2 $3 $4 $5 $6 $7", |
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static_cast<short>(-32767), // NOLINT(runtime/int) |
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static_cast<unsigned short>(65535), // NOLINT(runtime/int) |
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-1234567890, 3234567890U, -1234567890L, 3234567890UL, |
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-int64_t{1234567890123456789}, uint64_t{9234567890123456789u})); |
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// Hex format |
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EXPECT_EQ("0 1 f ffff0ffff 0123456789abcdef", |
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absl::Substitute("$0$1$2$3$4 $5", // |
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absl::Hex(0), absl::Hex(1, absl::kSpacePad2), |
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absl::Hex(0xf, absl::kSpacePad2), |
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absl::Hex(int16_t{-1}, absl::kSpacePad5), |
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absl::Hex(int16_t{-1}, absl::kZeroPad5), |
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absl::Hex(0x123456789abcdef, absl::kZeroPad16))); |
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// Dec format |
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EXPECT_EQ("0 115 -1-0001 81985529216486895", |
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absl::Substitute("$0$1$2$3$4 $5", // |
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absl::Dec(0), absl::Dec(1, absl::kSpacePad2), |
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absl::Dec(0xf, absl::kSpacePad2), |
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absl::Dec(int16_t{-1}, absl::kSpacePad5), |
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absl::Dec(int16_t{-1}, absl::kZeroPad5), |
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absl::Dec(0x123456789abcdef, absl::kZeroPad16))); |
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// Pointer. |
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const int* int_p = reinterpret_cast<const int*>(0x12345); |
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std::string str = absl::Substitute("$0", int_p); |
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EXPECT_EQ(absl::StrCat("0x", absl::Hex(int_p)), str); |
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// Volatile Pointer. |
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// Like C++ streamed I/O, such pointers implicitly become bool |
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volatile int vol = 237; |
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volatile int *volatile volptr = &vol; |
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str = absl::Substitute("$0", volptr); |
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EXPECT_EQ("true", str); |
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// null is special. StrCat prints 0x0. Substitute prints NULL. |
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const uint64_t* null_p = nullptr; |
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str = absl::Substitute("$0", null_p); |
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EXPECT_EQ("NULL", str); |
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// char* is also special. |
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const char* char_p = "print me"; |
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str = absl::Substitute("$0", char_p); |
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EXPECT_EQ("print me", str); |
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char char_buf[16]; |
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strncpy(char_buf, "print me too", sizeof(char_buf)); |
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str = absl::Substitute("$0", char_buf); |
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EXPECT_EQ("print me too", str); |
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// null char* is "doubly" special. Represented as the empty std::string. |
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char_p = nullptr; |
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str = absl::Substitute("$0", char_p); |
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EXPECT_EQ("", str); |
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// Out-of-order. |
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EXPECT_EQ("b, a, c, b", absl::Substitute("$1, $0, $2, $1", "a", "b", "c")); |
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// Literal $ |
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EXPECT_EQ("$", absl::Substitute("$$")); |
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EXPECT_EQ("$1", absl::Substitute("$$1")); |
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// Test all overloads. |
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EXPECT_EQ("a", absl::Substitute("$0", "a")); |
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EXPECT_EQ("a b", absl::Substitute("$0 $1", "a", "b")); |
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EXPECT_EQ("a b c", absl::Substitute("$0 $1 $2", "a", "b", "c")); |
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EXPECT_EQ("a b c d", absl::Substitute("$0 $1 $2 $3", "a", "b", "c", "d")); |
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EXPECT_EQ("a b c d e", |
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absl::Substitute("$0 $1 $2 $3 $4", "a", "b", "c", "d", "e")); |
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EXPECT_EQ("a b c d e f", absl::Substitute("$0 $1 $2 $3 $4 $5", "a", "b", "c", |
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"d", "e", "f")); |
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EXPECT_EQ("a b c d e f g", absl::Substitute("$0 $1 $2 $3 $4 $5 $6", "a", "b", |
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"c", "d", "e", "f", "g")); |
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EXPECT_EQ("a b c d e f g h", |
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absl::Substitute("$0 $1 $2 $3 $4 $5 $6 $7", "a", "b", "c", "d", "e", |
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"f", "g", "h")); |
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EXPECT_EQ("a b c d e f g h i", |
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absl::Substitute("$0 $1 $2 $3 $4 $5 $6 $7 $8", "a", "b", "c", "d", |
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"e", "f", "g", "h", "i")); |
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EXPECT_EQ("a b c d e f g h i j", |
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absl::Substitute("$0 $1 $2 $3 $4 $5 $6 $7 $8 $9", "a", "b", "c", |
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"d", "e", "f", "g", "h", "i", "j")); |
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EXPECT_EQ("a b c d e f g h i j b0", |
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absl::Substitute("$0 $1 $2 $3 $4 $5 $6 $7 $8 $9 $10", "a", "b", "c", |
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"d", "e", "f", "g", "h", "i", "j")); |
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const char* null_cstring = nullptr; |
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EXPECT_EQ("Text: ''", absl::Substitute("Text: '$0'", null_cstring)); |
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} |
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TEST(SubstituteTest, SubstituteAndAppend) { |
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std::string str = "Hello"; |
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absl::SubstituteAndAppend(&str, ", $0!", "world"); |
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EXPECT_EQ("Hello, world!", str); |
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// Test all overloads. |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0", "a"); |
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EXPECT_EQ("a", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1", "a", "b"); |
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EXPECT_EQ("a b", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2", "a", "b", "c"); |
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EXPECT_EQ("a b c", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3", "a", "b", "c", "d"); |
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EXPECT_EQ("a b c d", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3 $4", "a", "b", "c", "d", "e"); |
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EXPECT_EQ("a b c d e", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3 $4 $5", "a", "b", "c", "d", "e", |
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"f"); |
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EXPECT_EQ("a b c d e f", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3 $4 $5 $6", "a", "b", "c", "d", |
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"e", "f", "g"); |
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EXPECT_EQ("a b c d e f g", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3 $4 $5 $6 $7", "a", "b", "c", "d", |
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"e", "f", "g", "h"); |
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EXPECT_EQ("a b c d e f g h", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3 $4 $5 $6 $7 $8", "a", "b", "c", |
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"d", "e", "f", "g", "h", "i"); |
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EXPECT_EQ("a b c d e f g h i", str); |
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str.clear(); |
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absl::SubstituteAndAppend(&str, "$0 $1 $2 $3 $4 $5 $6 $7 $8 $9", "a", "b", |
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"c", "d", "e", "f", "g", "h", "i", "j"); |
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EXPECT_EQ("a b c d e f g h i j", str); |
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} |
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#ifdef GTEST_HAS_DEATH_TEST |
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TEST(SubstituteDeathTest, SubstituteDeath) { |
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EXPECT_DEBUG_DEATH( |
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static_cast<void>(absl::Substitute(absl::string_view("-$2"), "a", "b")), |
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"Invalid strings::Substitute\\(\\) format std::string: asked for \"\\$2\", " |
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"but only 2 args were given."); |
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EXPECT_DEBUG_DEATH( |
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static_cast<void>(absl::Substitute("-$z-")), |
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"Invalid strings::Substitute\\(\\) format std::string: \"-\\$z-\""); |
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EXPECT_DEBUG_DEATH( |
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static_cast<void>(absl::Substitute("-$")), |
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"Invalid strings::Substitute\\(\\) format std::string: \"-\\$\""); |
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} |
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#endif // GTEST_HAS_DEATH_TEST |
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} // namespace
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