85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
/*
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Copyright 2020 VMware, Inc.
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SPDX-License-Identifier: Apache-2.0
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*/
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package app
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import (
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"bytes"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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const knownGoodUsage = `Usage:
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placeholder-name [flags]
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Flags:
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-c, --config string path to configuration file (default "placeholder-name.yaml")
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-h, --help help for placeholder-name
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`
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func TestCommand(t *testing.T) {
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tests := []struct {
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name string
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args []string
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wantConfigPath string
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}{
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{
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name: "NoArgsSucceeds",
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args: []string{},
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wantConfigPath: "placeholder-name.yaml",
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},
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{
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name: "OneArgFails",
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args: []string{"tuna"},
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},
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{
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name: "ShortConfigFlagSucceeds",
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args: []string{"-c", "some/path/to/config.yaml"},
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wantConfigPath: "some/path/to/config.yaml",
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},
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{
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name: "LongConfigFlagSucceeds",
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args: []string{"--config", "some/path/to/config.yaml"},
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wantConfigPath: "some/path/to/config.yaml",
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},
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{
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name: "OneArgWithConfigFlagFails",
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args: []string{
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"--config", "some/path/to/config.yaml",
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"tuna",
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},
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},
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}
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for _, theTest := range tests {
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test := theTest // please the linter :'(
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t.Run(test.name, func(t *testing.T) {
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expect := assert.New(t)
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stdout := bytes.NewBuffer([]byte{})
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stderr := bytes.NewBuffer([]byte{})
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configPaths := make([]string, 0, 1)
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runFunc := func(configPath string) {
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configPaths = append(configPaths, configPath)
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}
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a := New(test.args, stdout, stderr)
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a.runFunc = runFunc
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err := a.Run()
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if test.wantConfigPath != "" {
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if expect.Equal(1, len(configPaths)) {
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expect.Equal(test.wantConfigPath, configPaths[0])
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}
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} else {
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expect.Error(err)
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expect.Contains(stdout.String(), knownGoodUsage)
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}
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})
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}
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}
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