Golang github.com-alecthomas-assert.Error类(方法)实例源码

func Test_OpenRemoteDownloadBuild(t *testing.T) {
	fakeData := []byte("aaaabbbb")

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("content-length", fmt.Sprintf("%d", len(fakeData)))
		w.WriteHeader(200)
		w.Write(fakeData)
	}))
	defer server.CloseClientConnections()

	tfs := &testfs{server.URL}
	assert.NoError(t, RegisterHandler(tfs))
	assert.Error(t, RegisterHandler(tfs))
	defer DeregisterHandler(tfs)

	f, err := Open("nofs:///not-quite")
	assert.Error(t, err)

	f, err = Open("testfs:///now/we/are/talking")
	assert.NoError(t, err)

	stats, err := f.Stat()
	assert.NoError(t, err)

	assert.EqualValues(t, len(fakeData), stats.Size())
	assert.NoError(t, f.Close())
}

func Test_NewHealer(t *testing.T) {
	_, err := NewHealer("", "/dev/null")
	assert.Error(t, err)

	_, err = NewHealer("nope,/dev/null", "invalid")
	assert.Error(t, err)

	healer, err := NewHealer("archive,/dev/null", "invalid")
	assert.NoError(t, err)

	_, ok := healer.(*ArchiveHealer)
	assert.True(t, ok)
}

func TestToOneWithError(t *testing.T) {
	_, err := FromInts(1, 2).ToOneWithError()
	assert.Error(t, err)
	value, err := FromInts(3).ToOneWithError()
	assert.NoError(t, err)
	assert.Equal(t, 3, value)
}

func TestTooManyArgsAfterCommand(t *testing.T) {
	a := newTestApp()
	a.Command("a", "")
	assert.NoError(t, a.init())
	_, err := a.Parse([]string{"a", "b"})
	assert.Error(t, err)
}

func TestSubCommandRequired(t *testing.T) {
	app := newTestApp()
	c0 := app.Command("c0", "")
	c0.Command("c1", "")
	_, err := app.Parse([]string{"c0"})
	assert.Error(t, err)
}

func TestTopLevelArgCantBeUsedWithCommands(t *testing.T) {
	c := newTestApp()
	c.Arg("arg", "help").String()
	c.Command("cmd", "help")
	_, err := c.Parse([]string{})
	assert.Error(t, err)
}

func TestInvalidDefaultArgValueErrors(t *testing.T) {
	c := newTestApp()
	cmd := c.Command("cmd", "cmd")
	cmd.Arg("arg", "arg").Default("one").Int()
	_, err := c.Parse([]string{"cmd"})
	assert.Error(t, err)
}

func TestDuplicateLongFlag(t *testing.T) {
	app := newTestApp()
	app.Flag("a", "").String()
	app.Flag("a", "").String()
	_, err := app.Parse([]string{})
	assert.Error(t, err)
}

func TestDuplicateAlias(t *testing.T) {
	app := newTestApp()
	app.Command("one", "")
	app.Command("two", "").Alias("one")
	_, err := app.Parse([]string{"one"})
	assert.Error(t, err)
}

func TestMultipleDefaultCommands(t *testing.T) {
	app := newTestApp()
	app.Command("c0", "").Default()
	app.Command("c1", "").Default()
	_, err := app.Parse([]string{})
	assert.Error(t, err)
}

func TestNestedCommandWithDuplicateFlagErrors(t *testing.T) {
	app := New("app", "")
	app.Flag("test", "").Bool()
	app.Command("cmd0", "").Flag("test", "").Bool()
	err := app.init()
	assert.Error(t, err)
}

func TestArgsRequiredAfterNonRequiredErrors(t *testing.T) {
	c := newTestApp()
	cmd := c.Command("cmd", "")
	cmd.Arg("a", "a").String()
	cmd.Arg("b", "b").Required().String()
	_, err := c.Parse([]string{"cmd"})
	assert.Error(t, err)
}

func TestArgMultipleRequired(t *testing.T) {
	terminated := false
	app := New("test", "")
	app.Version("0.0.0").Writer(ioutil.Discard)
	app.Arg("a", "").Required().String()
	app.Arg("b", "").Required().String()
	app.Terminate(func(int) { terminated = true })

	_, err := app.Parse([]string{})
	assert.Error(t, err)
	_, err = app.Parse([]string{"A"})
	assert.Error(t, err)
	_, err = app.Parse([]string{"A", "B"})
	assert.NoError(t, err)
	_, err = app.Parse([]string{"--version"})
	assert.True(t, terminated)
}

func TestRepeatableFlags(t *testing.T) {
	c := newTestApp()
	c.Flag("a", "a").String()
	c.Flag("b", "b").Strings()
	_, err := c.Parse([]string{"--a=foo", "--a=bar"})
	assert.Error(t, err)
	_, err = c.Parse([]string{"--b=foo", "--b=bar"})
	assert.NoError(t, err)
}

func TestEnum(t *testing.T) {
	app := New("", "")
	a := app.Arg("a", "").Enum("one", "two", "three")
	_, err := app.Parse([]string{"moo"})
	assert.Error(t, err)
	_, err = app.Parse([]string{"one"})
	assert.NoError(t, err)
	assert.Equal(t, "one", *a)
}

func TestNegateNonBool(t *testing.T) {
	fg := newFlagGroup()
	f := fg.Flag("b", "")
	f.Int()
	fg.init("")
	tokens := tokenize([]string{"--no-b"}, false)
	_, err := fg.parse(tokens)
	assert.Error(t, err)
}

func TestRequiredFlags(t *testing.T) {
	c := newTestApp()
	c.Flag("a", "a").String()
	c.Flag("b", "b").Required().String()

	_, err := c.Parse([]string{"--a=foo"})
	assert.Error(t, err)
	_, err = c.Parse([]string{"--b=foo"})
	assert.NoError(t, err)
}

func TestArgsMultipleRequiredThenNonRequired(t *testing.T) {
	c := newTestApp().Writer(ioutil.Discard)
	cmd := c.Command("cmd", "")
	cmd.Arg("a", "a").Required().String()
	cmd.Arg("b", "b").Required().String()
	cmd.Arg("c", "c").String()
	cmd.Arg("d", "d").String()
	_, err := c.Parse([]string{"cmd", "a", "b"})
	assert.NoError(t, err)
	_, err = c.Parse([]string{})
	assert.Error(t, err)
}

func TestDefaultSubcommandWithFlags(t *testing.T) {
	app := newTestApp()
	c0 := app.Command("c0", "").Default()
	_ = c0.Flag("f0", "").Int()
	c0c1 := c0.Command("c1", "").Default()
	c0c1f1 := c0c1.Flag("f1", "").Int()
	selected, err := app.Parse([]string{"--f1=2"})
	assert.NoError(t, err)
	assert.Equal(t, "c0 c1", selected)
	assert.Equal(t, 2, *c0c1f1)
	_, err = app.Parse([]string{"--f2"})
	assert.Error(t, err)
}

func TestRequiredFlag(t *testing.T) {
	app := newTestApp()
	app.Version("0.0.0").Writer(ioutil.Discard)
	exits := 0
	app.Terminate(func(int) { exits++ })
	app.Flag("a", "").Required().Bool()
	_, err := app.Parse([]string{"--a"})
	assert.NoError(t, err)
	_, err = app.Parse([]string{})
	assert.Error(t, err)
	_, err = app.Parse([]string{"--version"})
	assert.Equal(t, 1, exits)
}