87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
package chart
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import (
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"math"
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"strings"
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"testing"
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"time"
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"github.com/egoist/mygo/ui"
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)
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var rtStart = time.Date(2026, 10, 5, 9, 0, 0, 0, time.UTC)
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func TestRealtimeBufferTrims(t *testing.T) {
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b := NewRealtimeBuffer(100, "a")
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for i := range 100_000 {
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b.Append(rtStart.Add(time.Duration(i)*time.Second), float64(i))
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}
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if b.Len() != 100 || len(b.times) >= 200 || b.vals[0][len(b.vals[0])-1] != 99_999 {
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t.Fatalf("kept %d samples, %d stored", b.Len(), len(b.times))
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}
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defer func() {
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if recover() == nil {
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t.Fatal("no panic for a sample back in time")
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}
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}()
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b.Append(rtStart, 1)
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}
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func TestRealtimeChartWindowAndPause(t *testing.T) {
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buf := NewRealtimeBuffer(1000, "Bell", "Organ")
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var st RealtimeChartState
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values := 0
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h := &chartHarness{build: func(c *ui.Context) ChartResult {
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r := RealtimeChart(c, &st, buf, RealtimeChartOptions{Frame: ChartFrame{Label: "Sound"}, Window: 10 * time.Second})
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if r.ValueChanged() {
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values++
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}
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return r
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}}
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tt := ui.NewTester(h.view, 520, 440)
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if !tt.HasText("No data") {
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t.Fatalf("empty buffer: %q", tt.Texts())
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}
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for i := range 30 {
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buf.Append(rtStart.Add(time.Duration(i)*time.Second), float64(i), float64(2*i))
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}
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tt.Frame()
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tabTo(t, tt, "Sound")
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tt.Key(0, ui.KeyHome)
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if got := chartReadout(tt); got != "2026-10-05 09:00:19 · Bell 19 · Organ 38" {
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t.Fatalf("window start %q", got)
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}
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if err := tt.Click("Pause"); err != nil || !st.Paused || values != 1 {
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t.Fatalf("pause: %v %v %d", err, st.Paused, values)
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}
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for i := 30; i < 40; i++ {
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buf.Append(rtStart.Add(time.Duration(i)*time.Second), float64(i), 0)
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}
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tt.Frame()
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tabTo(t, tt, "Sound")
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tt.Key(0, ui.KeyEnd)
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if got := chartReadout(tt); !strings.HasPrefix(got, "2026-10-05 09:00:29 ·") {
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t.Fatalf("paused view moved: %q", got)
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}
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_ = tt.Click("Resume")
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tabTo(t, tt, "Sound")
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tt.Key(0, ui.KeyEnd)
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if got := chartReadout(tt); !strings.HasPrefix(got, "2026-10-05 09:00:39 ·") || st.Paused {
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t.Fatalf("resumed view %q", got)
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}
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}
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func TestRealtimeChartSnapshot(t *testing.T) {
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buf := NewRealtimeBuffer(200, "Bell", "Organ")
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for i := range 60 {
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x := float64(i)
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buf.Append(rtStart.Add(time.Duration(i)*time.Second), 5+3*math.Sin(x/5), 4+2*math.Sin(x/3+1))
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}
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snapshot(t, "realtime_chart", 520, 380, func(c *ui.Context) {
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var st RealtimeChartState
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ui.Column(c).Padding(16).Children(func() {
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RealtimeChart(c, &st, buf, RealtimeChartOptions{Frame: ChartFrame{Label: "Sound"}, Window: 30 * time.Second})
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})
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})
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}
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