package activator

import (
	"testing"
	"time"
)

// Each mark records the time since the one before it, under the step's
// name, so the line reads as where the wake spent its time.
func TestWakeStepsNameTheTimeSinceThePreviousMark(t *testing.T) {
	t0 := time.Unix(1000, 0)
	var s wakeSteps
	s.begin(t0)
	s.mark(t0.Add(3*time.Millisecond), "checks")
	s.mark(t0.Add(83*time.Millisecond), "lease")
	s.mark(t0.Add(83400*time.Microsecond), "restore")
	s.mark(t0.Add(752*time.Millisecond), "spawn")
	if got, want := s.String(), "checks 3ms, lease 80ms, restore 0s, spawn 669ms"; got != want {
		t.Errorf("String = %q, want %q", got, want)
	}
}

// A wake that never began (the claim path, a nil entry) has nothing to say.
func TestWakeStepsWithoutABeginRecordNothing(t *testing.T) {
	var s wakeSteps
	s.mark(time.Unix(1000, 0), "lease")
	if got := s.String(); got != "" {
		t.Errorf("String = %q, want empty", got)
	}
}