packer-cn/packer/ui_test.go

114 lines
2.5 KiB
Go

package packer
import (
"bytes"
"cgl.tideland.biz/asserts"
"testing"
)
func testUi() *BasicUi {
return &BasicUi{
Reader: new(bytes.Buffer),
Writer: new(bytes.Buffer),
}
}
func TestColoredUi(t *testing.T) {
bufferUi := testUi()
ui := &ColoredUi{UiColorYellow, UiColorRed, bufferUi}
ui.Say("foo")
result := readWriter(bufferUi)
if result != "\033[1;33;40mfoo\033[0m\n" {
t.Fatalf("invalid output: %s", result)
}
ui.Message("foo")
result = readWriter(bufferUi)
if result != "\033[0;33;40mfoo\033[0m\n" {
t.Fatalf("invalid output: %s", result)
}
ui.Error("foo")
result = readWriter(bufferUi)
if result != "\033[1;31;40mfoo\033[0m\n" {
t.Fatalf("invalid output: %s", result)
}
}
func TestPrefixedUi(t *testing.T) {
assert := asserts.NewTestingAsserts(t, true)
bufferUi := testUi()
prefixUi := &PrefixedUi{"mitchell", "bar", bufferUi}
prefixUi.Say("foo")
assert.Equal(readWriter(bufferUi), "mitchell: foo\n", "should have prefix")
prefixUi.Message("foo")
assert.Equal(readWriter(bufferUi), "bar: foo\n", "should have prefix")
prefixUi.Error("bar")
assert.Equal(readWriter(bufferUi), "mitchell: bar\n", "should have prefix")
prefixUi.Say("foo\nbar")
assert.Equal(readWriter(bufferUi), "mitchell: foo\nmitchell: bar\n", "should multiline")
}
func TestColoredUi_ImplUi(t *testing.T) {
var raw interface{}
raw = &ColoredUi{}
if _, ok := raw.(Ui); !ok {
t.Fatalf("ColoredUi must implement Ui")
}
}
func TestPrefixedUi_ImplUi(t *testing.T) {
var raw interface{}
raw = &PrefixedUi{}
if _, ok := raw.(Ui); !ok {
t.Fatalf("PrefixedUi must implement Ui")
}
}
func TestBasicUi_ImplUi(t *testing.T) {
var raw interface{}
raw = &BasicUi{}
if _, ok := raw.(Ui); !ok {
t.Fatalf("BasicUi must implement Ui")
}
}
func TestBasicUi_Error(t *testing.T) {
assert := asserts.NewTestingAsserts(t, true)
bufferUi := testUi()
bufferUi.Error("foo")
assert.Equal(readWriter(bufferUi), "foo\n", "basic output")
bufferUi.Error("5")
assert.Equal(readWriter(bufferUi), "5\n", "formatting")
}
func TestBasicUi_Say(t *testing.T) {
assert := asserts.NewTestingAsserts(t, true)
bufferUi := testUi()
bufferUi.Say("foo")
assert.Equal(readWriter(bufferUi), "foo\n", "basic output")
bufferUi.Say("5")
assert.Equal(readWriter(bufferUi), "5\n", "formatting")
}
// This reads the output from the bytes.Buffer in our test object
// and then resets the buffer.
func readWriter(ui *BasicUi) (result string) {
buffer := ui.Writer.(*bytes.Buffer)
result = buffer.String()
buffer.Reset()
return
}