program_name_test.cc

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//

//  Copyright 2019 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/flags/internal/program_name.h"

#include <string>

#include "gtest/gtest.h"

#include "absl/strings/match.h"

#include "absl/strings/string_view.h"

namespace {

namespace flags = absl::flags_internal;

TEST(FlagsPathUtilTest, TestProgamNameInterfaces) {

  flags::SetProgramInvocationName("absl/flags/program_name_test");

  std::string program_name = flags::ProgramInvocationName();

  for (char& c : program_name)

    if (c == '\\') c = '/';

#if !defined(__wasm__) && !defined(__asmjs__)

  const std::string expect_name = "absl/flags/program_name_test";

  const std::string expect_basename = "program_name_test";

#else

  // For targets that generate javascript or webassembly the invocation name

  // has the special value below.

  const std::string expect_name = "this.program";

  const std::string expect_basename = "this.program";

#endif

  EXPECT_TRUE(absl::EndsWith(program_name, expect_name)) << program_name;

  EXPECT_EQ(flags::ShortProgramInvocationName(), expect_basename);

  flags::SetProgramInvocationName("a/my_test");

  EXPECT_EQ(flags::ProgramInvocationName(), "a/my_test");

  EXPECT_EQ(flags::ShortProgramInvocationName(), "my_test");

  absl::string_view not_null_terminated("absl/aaa/bbb");

  not_null_terminated = not_null_terminated.substr(1, 10);

  flags::SetProgramInvocationName(not_null_terminated);

  EXPECT_EQ(flags::ProgramInvocationName(), "bsl/aaa/bb");

  EXPECT_EQ(flags::ShortProgramInvocationName(), "bb");

}  // namespace