kythe.io@v0.0.68-0.20240422202219-7225dbc01741/kythe/go/util/cmdutil/cmdutil_test.go (about)

     1  /*
     2   * Copyright 2018 The Kythe Authors. All rights reserved.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *   http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package cmdutil_test
    18  
    19  import (
    20  	"context"
    21  	"flag"
    22  	"fmt"
    23  
    24  	"github.com/google/subcommands"
    25  	"kythe.io/kythe/go/util/cmdutil"
    26  )
    27  
    28  func ExampleNewInfo() {
    29  	cmd := struct {
    30  		cmdutil.Info
    31  	}{
    32  		Info: cmdutil.NewInfo("example", "Demonstrate how to set up a subcommand",
    33  			`Show the user how to use the cmdutil.NewInfo function.`),
    34  	}
    35  
    36  	// Set up a flag set for demo purposes; most tools will use the default
    37  	// command line flags from the flag package.
    38  	fs := flag.NewFlagSet("test", flag.ExitOnError)
    39  	fs.Parse([]string{"example", "foo"})
    40  
    41  	// Register a command with the dispatcher.
    42  	cmdr := subcommands.NewCommander(fs, "cmdutil_test")
    43  	cmdr.Register(cmd, "examples")
    44  
    45  	// Execute...
    46  	fmt.Println(cmdr.Execute(context.Background(), fs))
    47  	// Output:
    48  	// Show the user how to use the cmdutil.NewInfo function.
    49  	// 0
    50  }