Queue: Add generic graceful queues with settings

modules/queue/queue_channel_test.go

@@ -0,0 +1,38 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package queue
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestChannelQueue(t *testing.T) {
+	handleChan := make(chan *testData)
+	handle := func(data ...Data) {
+		for _, datum := range data {
+			testDatum := datum.(*testData)
+			handleChan <- testDatum
+		}
+	}
+
+	nilFn := func(_ context.Context, _ func()) {}
+
+	queue, err := NewChannelQueue(handle, ChannelQueueConfiguration{QueueLength: 20}, &testData{})
+	assert.NoError(t, err)
+
+	go queue.Run(nilFn, nilFn)
+
+	test1 := testData{"A", 1}
+	go queue.Push(&test1)
+	result1 := <-handleChan
+	assert.Equal(t, test1.TestString, result1.TestString)
+	assert.Equal(t, test1.TestInt, result1.TestInt)
+
+	err = queue.Push(test1)
+	assert.Error(t, err)
+}