131 lines
3.7 KiB
Go
131 lines
3.7 KiB
Go
package packer
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import (
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"bytes"
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"cgl.tideland.biz/asserts"
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"os"
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"strings"
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"testing"
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)
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func testEnvironment() Environment {
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config := DefaultEnvironmentConfig()
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config.Ui = &ReaderWriterUi{
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new(bytes.Buffer),
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new(bytes.Buffer),
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}
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env, err := NewEnvironment(config)
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if err != nil {
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panic(err)
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}
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return env
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}
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func TestEnvironment_DefaultConfig_Commands(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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config := DefaultEnvironmentConfig()
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assert.Empty(config.Commands, "should have no commands")
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}
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func TestEnvironment_DefaultConfig_Ui(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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config := DefaultEnvironmentConfig()
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assert.NotNil(config.Ui, "default UI should not be nil")
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rwUi, ok := config.Ui.(*ReaderWriterUi)
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assert.True(ok, "default UI should be ReaderWriterUi")
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assert.Equal(rwUi.Writer, os.Stdout, "default UI should go to stdout")
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assert.Equal(rwUi.Reader, os.Stdin, "default UI should read from stdin")
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}
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func TestNewEnvironment_NoConfig(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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env, err := NewEnvironment(nil)
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assert.Nil(env, "env should be nil")
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assert.NotNil(err, "should be an error")
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}
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func TestEnvironment_Cli_CallsRun(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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command := &TestCommand{}
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commands := make(map[string]Command)
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commands["foo"] = command
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config := &EnvironmentConfig{}
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config.Commands = []string{"foo"}
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config.CommandFunc = func(n string) Command { return commands[n] }
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env, _ := NewEnvironment(config)
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assert.Equal(env.Cli([]string{"foo", "bar", "baz"}), 0, "runs foo command")
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assert.True(command.runCalled, "run should've been called")
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assert.Equal(command.runEnv, env, "should've ran with env")
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assert.Equal(command.runArgs, []string{"bar", "baz"}, "should have right args")
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}
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func TestEnvironment_DefaultCli_Empty(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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defaultEnv := testEnvironment()
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assert.Equal(defaultEnv.Cli([]string{}), 1, "CLI with no args")
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}
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func TestEnvironment_DefaultCli_Help(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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defaultEnv := testEnvironment()
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// A little lambda to help us test the output actually contains help
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testOutput := func() {
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buffer := defaultEnv.Ui().(*ReaderWriterUi).Writer.(*bytes.Buffer)
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output := buffer.String()
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buffer.Reset()
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assert.True(strings.Contains(output, "usage: packer"), "should print help")
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}
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// Test "--help"
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assert.Equal(defaultEnv.Cli([]string{"--help"}), 1, "--help should print")
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testOutput()
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// Test "-h"
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assert.Equal(defaultEnv.Cli([]string{"-h"}), 1, "--help should print")
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testOutput()
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}
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func TestEnvironment_DefaultCli_Version(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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defaultEnv := testEnvironment()
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// Test the basic version options
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assert.Equal(defaultEnv.Cli([]string{"version"}), 0, "version should work")
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assert.Equal(defaultEnv.Cli([]string{"--version"}), 0, "--version should work")
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assert.Equal(defaultEnv.Cli([]string{"-v"}), 0, "-v should work")
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// Test the --version and -v can appear anywhere
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assert.Equal(defaultEnv.Cli([]string{"bad", "-v"}), 0, "-v should work anywhere")
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assert.Equal(defaultEnv.Cli([]string{"bad", "--version"}), 0, "--version should work anywhere")
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// Test that "version" can't appear anywhere
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assert.Equal(defaultEnv.Cli([]string{"bad", "version"}), 1, "version should NOT work anywhere")
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}
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func TestEnvironment_SettingUi(t *testing.T) {
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assert := asserts.NewTestingAsserts(t, true)
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ui := &ReaderWriterUi{new(bytes.Buffer), new(bytes.Buffer)}
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config := &EnvironmentConfig{}
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config.Ui = ui
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env, _ := NewEnvironment(config)
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assert.Equal(env.Ui(), ui, "UIs should be equal")
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}
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