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// 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 (
	"testing"
	"time"

	"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(_ func()) {}

	queue, err := NewChannelQueue(handle,
		ChannelQueueConfiguration{
			WorkerPoolConfiguration: WorkerPoolConfiguration{
				QueueLength:  0,
				MaxWorkers:   10,
				BlockTimeout: 1 * time.Second,
				BoostTimeout: 5 * time.Minute,
				BoostWorkers: 5,
			},
			Workers: 0,
			Name:    "TestChannelQueue",
		}, &testData{})
	assert.NoError(t, err)

	assert.Equal(t, 5, queue.(*ChannelQueue).WorkerPool.boostWorkers)

	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)
}

func TestChannelQueue_Batch(t *testing.T) {
	handleChan := make(chan *testData)
	handle := func(data ...Data) {
		assert.True(t, len(data) == 2)
		for _, datum := range data {
			testDatum := datum.(*testData)
			handleChan <- testDatum
		}
	}

	nilFn := func(_ func()) {}

	queue, err := NewChannelQueue(handle,
		ChannelQueueConfiguration{
			WorkerPoolConfiguration: WorkerPoolConfiguration{
				QueueLength:  20,
				BatchLength:  2,
				BlockTimeout: 0,
				BoostTimeout: 0,
				BoostWorkers: 0,
				MaxWorkers:   10,
			},
			Workers: 1,
		}, &testData{})
	assert.NoError(t, err)

	go queue.Run(nilFn, nilFn)

	test1 := testData{"A", 1}
	test2 := testData{"B", 2}

	queue.Push(&test1)
	go queue.Push(&test2)

	result1 := <-handleChan
	assert.Equal(t, test1.TestString, result1.TestString)
	assert.Equal(t, test1.TestInt, result1.TestInt)

	result2 := <-handleChan
	assert.Equal(t, test2.TestString, result2.TestString)
	assert.Equal(t, test2.TestInt, result2.TestInt)

	err = queue.Push(test1)
	assert.Error(t, err)
}