Keys does not work when being mocked.

[freshteapot]

Using redisMock.On("Keys", "hello") fails and doesnt acknowledge the pattern sent in.

When I use "MatchedBy", it reports it as missing.

redisClient.On("Keys", mock.MatchedBy(func(input string) bool {
				fmt.Println(input)
				return true
			}))

When I use mock.Anything, it works.

Code for Keys doesnt send the pattern on to the Called. Below works.

func (m *ClientMock) Keys(pattern string) *redis.StringSliceCmd {
	if !m.hasStub("Keys") {
		return m.client.Keys(pattern)
	}
	return m.Called(pattern).Get(0).(*redis.StringSliceCmd)
}

[elliotchance]

Ah yes, this is a bug. If you have already fixed it please put in the PR.