[tor-commits] [snowflake/main] Add Event Bus Test

[shelikhoo@xxxxxxxxxxxxxx]

commit b5ef18803f08364db15ba66b0189371d5e79d821
Author: Shelikhoo <xiaokangwang@xxxxxxxxxxx>
Date:   Fri Nov 26 16:24:21 2021 +0000

    Add Event Bus Test
---
 common/event/bus_test.go | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/common/event/bus_test.go b/common/event/bus_test.go
new file mode 100644
index 0000000..df40d3d
--- /dev/null
+++ b/common/event/bus_test.go
@@ -0,0 +1,32 @@
+package event
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+type stubReceiver struct {
+	counter int
+}
+
+func (s *stubReceiver) OnNewSnowflakeEvent(event SnowflakeEvent) {
+	s.counter++
+}
+
+func TestBusDispatch(t *testing.T) {
+	EventBus := NewSnowflakeEventDispatcher()
+	StubReceiverA := &stubReceiver{}
+	StubReceiverB := &stubReceiver{}
+	EventBus.AddSnowflakeEventListener(StubReceiverA)
+	EventBus.AddSnowflakeEventListener(StubReceiverB)
+	assert.Equal(t, 0, StubReceiverA.counter)
+	assert.Equal(t, 0, StubReceiverB.counter)
+	EventBus.OnNewSnowflakeEvent(EventOnSnowflakeConnected{})
+	assert.Equal(t, 1, StubReceiverA.counter)
+	assert.Equal(t, 1, StubReceiverB.counter)
+	EventBus.RemoveSnowflakeEventListener(StubReceiverB)
+	EventBus.OnNewSnowflakeEvent(EventOnSnowflakeConnected{})
+	assert.Equal(t, 2, StubReceiverA.counter)
+	assert.Equal(t, 1, StubReceiverB.counter)
+
+}



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