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