test(startup): specify first-presentation trace transitions

commit: 4cd14fac375e9784f901d7fe08a9b1b3068e2f10
author: brice · 3mo ago · 2026-07-14 07:29 UTC
committer: brice · 3mo ago · 2026-07-14 09:35 UTC
parent: aaec84c
signature: GPG VerifiedCD88F9E564E0102646FB6077A1A07C7C7C3E349D · arch-gpg Verified for the committer email

1 file · +52 -0

A internal/logging/startup_trace_test.go +52 -0

@@ -0,0 +1,52 @@
	1	+	package logging
	2	+
	3	+	import (
	4	+	"bytes"
	5	+	"testing"
	6	+	"time"
	7	+
	8	+	"github.com/rs/zerolog"
	9	+	"github.com/stretchr/testify/require"
	10	+	)
	11	+
	12	+	func TestStartupTraceAcceptsOnlyOrderedOneShotMilestones(t *testing.T) {
	13	+	now := time.Unix(100, 0)
	14	+	trace := newStartupTrace(func() time.Time { return now })
	15	+
	16	+	require.True(t, trace.Mark("process_entry"))
	17	+	require.False(t, trace.Mark("cef_initialized"), "out-of-order transition must be rejected")
	18	+	require.False(t, trace.Mark("process_entry"), "duplicate transition must be rejected")
	19	+
	20	+	for _, name := range []string{
	21	+	"config_complete",
	22	+	"cef_library_load_begin",
	23	+	"cef_initialized",
	24	+	"browser_create_requested",
	25	+	"first_accelerated_paint_received",
	26	+	"first_dmabuf_texture_swap",
	27	+	"first_gtk_presentation",
	28	+	} {
	29	+	now = now.Add(time.Millisecond)
	30	+	require.Truef(t, trace.Mark(name), "milestone %s should be accepted", name)
	31	+	}
	32	+	require.False(t, trace.Mark("first_gtk_presentation"))
	33	+	}
	34	+
	35	+	func TestStartupTraceEmitsOneNormalSummaryAtFirstPresentation(t *testing.T) {
	36	+	var output bytes.Buffer
	37	+	logger := zerolog.New(&output)
	38	+	now := time.Unix(100, 0)
	39	+	trace := newStartupTrace(func() time.Time { return now })
	40	+	trace.SetBackend("gdk-dmabuf")
	41	+	trace.SetLogger(&logger)
	42	+
	43	+	for _, name := range startupMilestoneOrder {
	44	+	now = now.Add(time.Millisecond)
	45	+	require.True(t, trace.Mark(name))
	46	+	}
	47	+	trace.Mark("first_gtk_presentation")
	48	+
	49	+	require.Contains(t, output.String(), `"message":"startup_trace: first presentation"`)
	50	+	require.Contains(t, output.String(), `"backend":"gdk-dmabuf"`)
	51	+	require.Equal(t, 1, bytes.Count(output.Bytes(), []byte(`"message":"startup_trace: first presentation"`)))
	52	+	}

@@ -0,0 +1,52 @@
	1	+	package logging
	2	+
	3	+	import (
	4	+	"bytes"
	5	+	"testing"
	6	+	"time"
	7	+
	8	+	"github.com/rs/zerolog"
	9	+	"github.com/stretchr/testify/require"
	10	+	)
	11	+
	12	+	func TestStartupTraceAcceptsOnlyOrderedOneShotMilestones(t *testing.T) {
	13	+	now := time.Unix(100, 0)
	14	+	trace := newStartupTrace(func() time.Time { return now })
	15	+
	16	+	require.True(t, trace.Mark("process_entry"))
	17	+	require.False(t, trace.Mark("cef_initialized"), "out-of-order transition must be rejected")
	18	+	require.False(t, trace.Mark("process_entry"), "duplicate transition must be rejected")
	19	+
	20	+	for _, name := range []string{
	21	+	"config_complete",
	22	+	"cef_library_load_begin",
	23	+	"cef_initialized",
	24	+	"browser_create_requested",
	25	+	"first_accelerated_paint_received",
	26	+	"first_dmabuf_texture_swap",
	27	+	"first_gtk_presentation",
	28	+	} {
	29	+	now = now.Add(time.Millisecond)
	30	+	require.Truef(t, trace.Mark(name), "milestone %s should be accepted", name)
	31	+	}
	32	+	require.False(t, trace.Mark("first_gtk_presentation"))
	33	+	}
	34	+
	35	+	func TestStartupTraceEmitsOneNormalSummaryAtFirstPresentation(t *testing.T) {
	36	+	var output bytes.Buffer
	37	+	logger := zerolog.New(&output)
	38	+	now := time.Unix(100, 0)
	39	+	trace := newStartupTrace(func() time.Time { return now })
	40	+	trace.SetBackend("gdk-dmabuf")
	41	+	trace.SetLogger(&logger)
	42	+
	43	+	for _, name := range startupMilestoneOrder {
	44	+	now = now.Add(time.Millisecond)
	45	+	require.True(t, trace.Mark(name))
	46	+	}
	47	+	trace.Mark("first_gtk_presentation")
	48	+
	49	+	require.Contains(t, output.String(), `"message":"startup_trace: first presentation"`)
	50	+	require.Contains(t, output.String(), `"backend":"gdk-dmabuf"`)
	51	+	require.Equal(t, 1, bytes.Count(output.Bytes(), []byte(`"message":"startup_trace: first presentation"`)))
	52	+	}