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- /*
- * Copyright 2015-present Facebook, Inc.
- *
- * 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 <folly/experimental/NestedCommandLineApp.h>
- #include <folly/Subprocess.h>
- #include <folly/experimental/io/FsUtil.h>
- #include <folly/portability/GTest.h>
- #include <glog/logging.h>
- namespace folly {
- namespace test {
- namespace {
- std::string getHelperPath() {
- const auto basename = "nested_command_line_app_test_helper";
- auto path = fs::executable_path();
- path.remove_filename() /= basename;
- if (!fs::exists(path)) {
- path = path.parent_path().parent_path() / basename / basename;
- }
- return path.string();
- }
- std::string callHelper(
- std::initializer_list<std::string> args,
- int expectedExitCode = 0,
- int stdoutFd = -1) {
- static std::string helperPath = getHelperPath();
- std::vector<std::string> allArgs;
- allArgs.reserve(args.size() + 1);
- allArgs.push_back(helperPath);
- allArgs.insert(allArgs.end(), args.begin(), args.end());
- Subprocess::Options options;
- if (stdoutFd != -1) {
- options.stdoutFd(stdoutFd);
- } else {
- options.pipeStdout();
- }
- options.pipeStderr();
- Subprocess proc(allArgs, options);
- auto p = proc.communicate();
- EXPECT_EQ(expectedExitCode, proc.wait().exitStatus());
- return p.first;
- }
- } // namespace
- TEST(ProgramOptionsTest, Errors) {
- callHelper({}, 1);
- callHelper({"--wtf", "foo"}, 1);
- callHelper({"qux"}, 1);
- callHelper({"--global-foo", "x", "foo"}, 1);
- }
- TEST(ProgramOptionsTest, Help) {
- // Not actually checking help output, just verifying that help doesn't fail
- callHelper({"--version"});
- callHelper({"--help"});
- callHelper({"--help", "foo"});
- callHelper({"--help", "bar"});
- callHelper({"--help", "--", "bar"});
- callHelper({"help"});
- callHelper({"help", "foo"});
- callHelper({"help", "bar"});
- // wrong command name
- callHelper({"--help", "qux"}, 1);
- callHelper({"help", "qux"}, 1);
- // anything after -- is parsed as arguments
- callHelper({"--", "help", "bar"}, 1);
- }
- TEST(ProgramOptionsTest, DevFull) {
- folly::File full("/dev/full", O_RDWR);
- callHelper({"--help"}, 1, full.fd());
- }
- TEST(ProgramOptionsTest, CutArguments) {
- // anything after -- is parsed as arguments
- EXPECT_EQ(
- "running foo\n"
- "foo global-foo 43\n"
- "foo local-foo 42\n"
- "foo arg b\n"
- "foo arg --local-foo\n"
- "foo arg 44\n"
- "foo arg a\n",
- callHelper(
- {"foo", "--global-foo", "43", "--", "b", "--local-foo", "44", "a"}));
- }
- TEST(ProgramOptionsTest, Success) {
- EXPECT_EQ(
- "running foo\n"
- "foo global-foo 42\n"
- "foo local-foo 42\n",
- callHelper({"foo"}));
- EXPECT_EQ(
- "running foo\n"
- "foo global-foo 43\n"
- "foo local-foo 44\n"
- "foo arg a\n"
- "foo arg b\n",
- callHelper({"--global-foo", "43", "foo", "--local-foo", "44", "a", "b"}));
- // Check that global flags can still be given after the command
- EXPECT_EQ(
- "running foo\n"
- "foo global-foo 43\n"
- "foo local-foo 44\n"
- "foo arg a\n"
- "foo arg b\n",
- callHelper({"foo", "--global-foo", "43", "--local-foo", "44", "a", "b"}));
- }
- TEST(ProgramOptionsTest, Aliases) {
- EXPECT_EQ(
- "running foo\n"
- "foo global-foo 43\n"
- "foo local-foo 44\n"
- "foo arg a\n"
- "foo arg b\n",
- callHelper({"--global-foo", "43", "bar", "--local-foo", "44", "a", "b"}));
- }
- TEST(ProgramOptionsTest, BuiltinCommand) {
- NestedCommandLineApp app;
- ASSERT_TRUE(app.isBuiltinCommand(NestedCommandLineApp::kHelpCommand.str()));
- ASSERT_TRUE(
- app.isBuiltinCommand(NestedCommandLineApp::kVersionCommand.str()));
- ASSERT_FALSE(app.isBuiltinCommand(
- NestedCommandLineApp::kHelpCommand.str() + "nonsense"));
- }
- } // namespace test
- } // namespace folly
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