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+// 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
+//
+// https://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 <vector>
+
+#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}));
+
+ // Hex format
+ EXPECT_EQ("0 1 f ffff0ffff 0123456789abcdef",
+ absl::Substitute("$0$1$2$3$4 $5", //
+ absl::Hex(0), absl::Hex(1, absl::kSpacePad2),
+ absl::Hex(0xf, absl::kSpacePad2),
+ absl::Hex(int16_t{-1}, absl::kSpacePad5),
+ absl::Hex(int16_t{-1}, absl::kZeroPad5),
+ absl::Hex(0x123456789abcdef, absl::kZeroPad16)));
+
+ // Dec format
+ EXPECT_EQ("0 115 -1-0001 81985529216486895",
+ absl::Substitute("$0$1$2$3$4 $5", //
+ absl::Dec(0), absl::Dec(1, absl::kSpacePad2),
+ absl::Dec(0xf, absl::kSpacePad2),
+ absl::Dec(int16_t{-1}, absl::kSpacePad5),
+ absl::Dec(int16_t{-1}, absl::kZeroPad5),
+ absl::Dec(0x123456789abcdef, absl::kZeroPad16)));
+
+ // 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);
+}
+
+TEST(SubstituteTest, VectorBoolRef) {
+ std::vector<bool> v = {true, false};
+ const auto& cv = v;
+ EXPECT_EQ("true false true false",
+ absl::Substitute("$0 $1 $2 $3", v[0], v[1], cv[0], cv[1]));
+
+ std::string str = "Logic be like: ";
+ absl::SubstituteAndAppend(&str, "$0 $1 $2 $3", v[0], v[1], cv[0], cv[1]);
+ EXPECT_EQ("Logic be like: true false true false", str);
+}
+
+#ifdef GTEST_HAS_DEATH_TEST
+
+TEST(SubstituteDeathTest, SubstituteDeath) {
+ EXPECT_DEBUG_DEATH(
+ static_cast<void>(absl::Substitute(absl::string_view("-$2"), "a", "b")),
+ "Invalid absl::Substitute\\(\\) format std::string: asked for \"\\$2\", "
+ "but only 2 args were given.");
+ EXPECT_DEBUG_DEATH(
+ static_cast<void>(absl::Substitute(absl::string_view("-$z-"))),
+ "Invalid absl::Substitute\\(\\) format std::string: \"-\\$z-\"");
+ EXPECT_DEBUG_DEATH(
+ static_cast<void>(absl::Substitute(absl::string_view("-$"))),
+ "Invalid absl::Substitute\\(\\) format std::string: \"-\\$\"");
+}
+
+#endif // GTEST_HAS_DEATH_TEST
+
+} // namespace
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