package progress_test import ( "testing" "time" "github.com/restic/restic/internal/test" "github.com/restic/restic/internal/ui/progress" ) func TestCounter(t *testing.T) { const N = 100 const startTotal = uint64(12345) var ( finalSeen = false increasing = true last uint64 lastTotal = startTotal ncalls int nmaxChange int ) report := func(value uint64, total uint64, d time.Duration, final bool) { if final { finalSeen = true } if value < last { increasing = false } last = value if total != lastTotal { nmaxChange++ } lastTotal = total ncalls++ } c := progress.NewCounter(10*time.Millisecond, startTotal, report) done := make(chan struct{}) go func() { defer close(done) for i := 0; i < N; i++ { time.Sleep(time.Millisecond) c.Add(1) } c.SetMax(42) }() <-done c.Done() test.Assert(t, finalSeen, "final call did not happen") test.Assert(t, increasing, "values not increasing") test.Equals(t, uint64(N), last) test.Equals(t, uint64(42), lastTotal) test.Equals(t, int(1), nmaxChange) t.Log("number of calls:", ncalls) } func TestCounterNil(_ *testing.T) { // Shouldn't panic. var c *progress.Counter c.Add(1) c.SetMax(42) c.Done() }