(t *testing.T)
| 68 | } |
| 69 | |
| 70 | func TestMemoryProfile(t *testing.T) { |
| 71 | stats := statsContext{heapProfileCollectionThreshold: 1, heapProfileEnabled: true} // set to a very low value to ensure collection |
| 72 | |
| 73 | outputDir := t.TempDir() |
| 74 | ctx := base.TestCtx(t) |
| 75 | |
| 76 | // make sure go memory stats are set once |
| 77 | AddGoRuntimeStats() |
| 78 | |
| 79 | // collect single profile |
| 80 | startTime := "01" |
| 81 | require.NoError(t, stats.collectMemoryProfile(ctx, outputDir, startTime)) |
| 82 | require.Equal(t, []string{"pprof_heap_high_01.pb.gz"}, getFilenames(t, outputDir)) |
| 83 | |
| 84 | // collect enough profiles to trigger rotation |
| 85 | expectedFilenames := make([]string, 0, 10) |
| 86 | for i := 2; i < 12; i++ { |
| 87 | // reset heap profile time time to ensure we create new heap profiles |
| 88 | stats.lastHeapProfile = time.Time{} |
| 89 | expectedFilenames = append(expectedFilenames, fmt.Sprintf("pprof_heap_high_%02d.pb.gz", i)) |
| 90 | require.NoError(t, stats.collectMemoryProfile(ctx, outputDir, fmt.Sprintf("%02d", i))) |
| 91 | } |
| 92 | require.ElementsMatch(t, expectedFilenames, getFilenames(t, outputDir)) |
| 93 | |
| 94 | // ask for another profile, this should not be collected. Since the last profile collection (11) set lastHeapProfile, we do not collect another profile for 5 minutes. |
| 95 | require.NoError(t, stats.collectMemoryProfile(ctx, outputDir, "12")) |
| 96 | require.Equal(t, expectedFilenames, getFilenames(t, outputDir)) |
| 97 | } |
| 98 | |
| 99 | func getFilenames(t *testing.T, dir string) []string { |
| 100 | files, err := os.ReadDir(dir) |
nothing calls this directly
no test coverage detected