mirror of
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193 lines
7.3 KiB
C++
193 lines
7.3 KiB
C++
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// 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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