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package events
import (
"context"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestEventCache_Flush(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
evsw := NewEventSwitch()
err := evsw.Start(ctx)
require.NoError(t, err)
err = evsw.AddListenerForEvent("nothingness", "", func(data EventData) {
// Check we are not initializing an empty buffer full of zeroed eventInfos in the EventCache
require.FailNow(t, "We should never receive a message on this switch since none are fired")
})
require.NoError(t, err)
evc := NewEventCache(evsw)
evc.Flush()
// Check after reset
evc.Flush()
fail := true
pass := false
err = evsw.AddListenerForEvent("somethingness", "something", func(data EventData) {
if fail {
require.FailNow(t, "Shouldn't see a message until flushed")
}
pass = true
})
require.NoError(t, err)
evc.FireEvent("something", struct{ int }{1})
evc.FireEvent("something", struct{ int }{2})
evc.FireEvent("something", struct{ int }{3})
fail = false
evc.Flush()
assert.True(t, pass)
}