chore: testing queue is full. (#1)

Signed-off-by: Bo-Yi Wu <[email protected]>

Author: appleboy

README.md

@@ -1,5 +1,6 @@
 # Queue
 
 [![Run Tests](https://github.com/appleboy/queue/actions/workflows/go.yml/badge.svg?branch=master)](https://github.com/appleboy/queue/actions/workflows/go.yml)
+[![codecov](https://codecov.io/gh/appleboy/queue/branch/master/graph/badge.svg?token=V8A1WA0P5E)](https://codecov.io/gh/appleboy/queue)
 
 Queue is a Golang library for spawning and managing a Goroutine pool, Alloowing you to create multiple worker according to limit CPU number of machine.

queue_test.go

@@ -121,3 +121,23 @@ func TestWorkerPanic(t *testing.T) {
 	q.Wait()
 	assert.Equal(t, 0, q.Workers())
 }
+
+func TestCapacityReached(t *testing.T) {
+	w := &queueWorker{
+		messages: make(chan QueuedMessage, 1),
+	}
+	q, err := NewQueue(
+		WithWorker(w),
+		WithWorkerCount(5),
+	)
+	assert.NoError(t, err)
+	assert.NotNil(t, q)
+
+	assert.NoError(t, q.Queue(mockMessage{
+		message: "foobar",
+	}))
+	// max capacity reached
+	assert.Error(t, q.Queue(mockMessage{
+		message: "foobar",
+	}))
+}