81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
package mujica
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import (
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"strings"
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"testing"
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"github.com/egoist/mygo/ui"
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)
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func streamingTester(text *string, opts StreamingTextOptions, reduce bool) *ui.Tester {
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tt := ui.NewTester(func(c *ui.Context) {
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Use(c, Settings{})
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StreamingText(c, *text, opts)
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}, 400, 200)
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tt.SetPreferences(ui.Preferences{ReduceMotion: reduce, TextScale: 1})
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tt.Frame()
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return tt
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}
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// streamingShown returns the visible text of the stream.
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func streamingShown(tt *ui.Tester) string {
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texts := tt.Texts()
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return texts[len(texts)-1]
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}
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func TestStreamingTextSmoothReveal(t *testing.T) {
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text := "Hello"
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tt := streamingTester(&text, StreamingTextOptions{Smooth: true, Streaming: true, Rate: 1}, false)
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if !strings.HasPrefix(streamingShown(tt), "Hello") || !strings.HasSuffix(streamingShown(tt), "▍") {
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t.Fatalf("first text %q", streamingShown(tt))
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}
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text += ", court"
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tt.Frame()
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if s := streamingShown(tt); strings.Contains(s, "court") {
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t.Fatalf("1 char/s revealed %q at once", s)
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}
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}
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func TestStreamingTextInstantAndReducedMotion(t *testing.T) {
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for _, tc := range []struct {
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opts StreamingTextOptions
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reduce bool
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}{{StreamingTextOptions{}, false}, {StreamingTextOptions{Smooth: true, Rate: 1}, true}} {
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text := "Hello"
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tt := streamingTester(&text, tc.opts, tc.reduce)
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text += ", court"
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tt.Frame()
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if s := streamingShown(tt); s != "Hello, court" {
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t.Errorf("%+v reduce %v: shows %q", tc.opts, tc.reduce, s)
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}
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}
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}
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func TestStreamingTextReplacedRestarts(t *testing.T) {
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text := "abcdef"
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tt := streamingTester(&text, StreamingTextOptions{Smooth: true, Rate: 1}, false)
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text = "abXYZ"
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tt.Frame()
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if s := streamingShown(tt); s != "ab" {
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t.Fatalf("replaced text shows %q, want the shared prefix", s)
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}
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}
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func TestStreamingTextNegativeRate(t *testing.T) {
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defer func() {
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if recover() == nil {
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t.Fatal("no panic for a negative rate")
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}
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}()
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text := ""
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streamingTester(&text, StreamingTextOptions{Rate: -1}, false)
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}
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func TestStreamingTextSnapshot(t *testing.T) {
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snapshot(t, "streaming_text", 360, 90, func(c *ui.Context) {
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ui.Column(c).Padding(16).Children(func() {
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StreamingText(c, "The herald reads the decree, word by word", StreamingTextOptions{Streaming: true, Smooth: true})
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})
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})
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}
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