Example #1
0
func (ss *stateSuite) TestImplicitCheckpointModifiedOnly(c *C) {
	restore := state.MockCheckpointRetryDelay(2*time.Millisecond, 1*time.Second)
	defer restore()

	b := &fakeStateBackend{}
	st := state.New(b)
	st.Lock()
	st.Unlock()
	st.Lock()
	st.Unlock()

	c.Assert(b.checkpoints, HasLen, 1)

	st.Lock()
	st.Set("foo", "bar")
	st.Unlock()

	c.Assert(b.checkpoints, HasLen, 2)
}
Example #2
0
func (ss *stateSuite) TestImplicitCheckpointPanicsAfterFailedRetries(c *C) {
	restore := state.MockCheckpointRetryDelay(2*time.Millisecond, 10*time.Millisecond)
	defer restore()

	boom := errors.New("boom")
	retries := 0
	error := func() error {
		retries++
		return boom
	}
	b := &fakeStateBackend{error: error}
	st := state.New(b)
	st.Lock()

	// implicit checkpoint will panic after all failed retries
	t0 := time.Now()
	c.Check(func() { st.Unlock() }, PanicMatches, "cannot checkpoint even after 10ms of retries every 2ms: boom")
	// we did at least a couple
	c.Check(retries > 2, Equals, true)
	c.Check(time.Since(t0) > 10*time.Millisecond, Equals, true)
}
Example #3
0
func (ss *stateSuite) TestImplicitCheckpointRetry(c *C) {
	restore := state.MockCheckpointRetryDelay(2*time.Millisecond, 1*time.Second)
	defer restore()

	retries := 0
	boom := errors.New("boom")
	error := func() error {
		retries++
		if retries == 2 {
			return nil
		}
		return boom
	}
	b := &fakeStateBackend{error: error}
	st := state.New(b)
	st.Lock()

	// implicit checkpoint will retry
	st.Unlock()

	c.Check(retries, Equals, 2)
}