102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
// 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/internal/ostringstream.h"
|
|
|
|
#include <memory>
|
|
#include <ostream>
|
|
#include <string>
|
|
#include <type_traits>
|
|
|
|
#include "gtest/gtest.h"
|
|
|
|
namespace {
|
|
|
|
TEST(OStringStream, IsOStream) {
|
|
static_assert(
|
|
std::is_base_of<std::ostream, absl::strings_internal::OStringStream>(),
|
|
"");
|
|
}
|
|
|
|
TEST(OStringStream, ConstructDestroy) {
|
|
{
|
|
absl::strings_internal::OStringStream strm(nullptr);
|
|
EXPECT_EQ(nullptr, strm.str());
|
|
}
|
|
{
|
|
std::string s = "abc";
|
|
{
|
|
absl::strings_internal::OStringStream strm(&s);
|
|
EXPECT_EQ(&s, strm.str());
|
|
}
|
|
EXPECT_EQ("abc", s);
|
|
}
|
|
{
|
|
std::unique_ptr<std::string> s(new std::string);
|
|
absl::strings_internal::OStringStream strm(s.get());
|
|
s.reset();
|
|
}
|
|
}
|
|
|
|
TEST(OStringStream, Str) {
|
|
std::string s1;
|
|
absl::strings_internal::OStringStream strm(&s1);
|
|
const absl::strings_internal::OStringStream& c_strm(strm);
|
|
|
|
static_assert(std::is_same<decltype(strm.str()), std::string*>(), "");
|
|
static_assert(std::is_same<decltype(c_strm.str()), const std::string*>(), "");
|
|
|
|
EXPECT_EQ(&s1, strm.str());
|
|
EXPECT_EQ(&s1, c_strm.str());
|
|
|
|
strm.str(&s1);
|
|
EXPECT_EQ(&s1, strm.str());
|
|
EXPECT_EQ(&s1, c_strm.str());
|
|
|
|
std::string s2;
|
|
strm.str(&s2);
|
|
EXPECT_EQ(&s2, strm.str());
|
|
EXPECT_EQ(&s2, c_strm.str());
|
|
|
|
strm.str(nullptr);
|
|
EXPECT_EQ(nullptr, strm.str());
|
|
EXPECT_EQ(nullptr, c_strm.str());
|
|
}
|
|
|
|
TEST(OStreamStream, WriteToLValue) {
|
|
std::string s = "abc";
|
|
{
|
|
absl::strings_internal::OStringStream strm(&s);
|
|
EXPECT_EQ("abc", s);
|
|
strm << "";
|
|
EXPECT_EQ("abc", s);
|
|
strm << 42;
|
|
EXPECT_EQ("abc42", s);
|
|
strm << 'x' << 'y';
|
|
EXPECT_EQ("abc42xy", s);
|
|
}
|
|
EXPECT_EQ("abc42xy", s);
|
|
}
|
|
|
|
TEST(OStreamStream, WriteToRValue) {
|
|
std::string s = "abc";
|
|
absl::strings_internal::OStringStream(&s) << "";
|
|
EXPECT_EQ("abc", s);
|
|
absl::strings_internal::OStringStream(&s) << 42;
|
|
EXPECT_EQ("abc42", s);
|
|
absl::strings_internal::OStringStream(&s) << 'x' << 'y';
|
|
EXPECT_EQ("abc42xy", s);
|
|
}
|
|
|
|
} // namespace
|