mirror of https://github.com/tikv/client-go.git
91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
// Copyright 2025 TiKV Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package async
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import (
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"sync"
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"testing"
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"github.com/stretchr/testify/require"
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)
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type mockExecutor struct {
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lock sync.Mutex
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tasks []func()
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}
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func (e *mockExecutor) Go(f func()) {
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e.Append(f)
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}
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func (e *mockExecutor) Append(fs ...func()) {
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e.lock.Lock()
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e.tasks = append(e.tasks, fs...)
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e.lock.Unlock()
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}
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func TestInjectOrder(t *testing.T) {
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cb := NewCallback(&mockExecutor{}, func(ns []int, err error) {
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require.NoError(t, err)
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// injected functions are executed in reverse order
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require.Equal(t, []int{1, 2, 3}, ns)
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})
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cb.Inject(func(ns []int, err error) ([]int, error) { return append(ns, 3), nil })
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cb.Inject(func(ns []int, err error) ([]int, error) { return append(ns, 2), nil })
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cb.Inject(func(ns []int, err error) ([]int, error) { return append(ns, 1), nil })
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cb.Invoke([]int{}, nil)
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}
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func TestFulfillOnce(t *testing.T) {
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t.Run("InvokeTwice", func(t *testing.T) {
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ns := []int{}
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cb := NewCallback(&mockExecutor{}, func(n int, err error) { ns = append(ns, n) })
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cb.Invoke(1, nil)
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cb.Invoke(2, nil)
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require.Equal(t, []int{1}, ns)
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})
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t.Run("ScheduleTwice", func(t *testing.T) {
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e := &mockExecutor{}
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ns := []int{}
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cb := NewCallback(e, func(n int, err error) { ns = append(ns, n) })
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cb.Schedule(1, nil)
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cb.Schedule(2, nil)
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require.Equal(t, 1, len(e.tasks))
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require.Equal(t, []int{}, ns)
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e.tasks[0]()
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require.Equal(t, []int{1}, ns)
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})
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t.Run("InvokeSchedule", func(t *testing.T) {
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e := &mockExecutor{}
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ns := []int{}
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cb := NewCallback(e, func(n int, err error) { ns = append(ns, n) })
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cb.Invoke(1, nil)
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cb.Schedule(2, nil)
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require.Equal(t, 0, len(e.tasks))
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require.Equal(t, []int{1}, ns)
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})
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t.Run("ScheduleInvoke", func(t *testing.T) {
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e := &mockExecutor{}
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ns := []int{}
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cb := NewCallback(e, func(n int, err error) { ns = append(ns, n) })
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cb.Schedule(1, nil)
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cb.Invoke(2, nil)
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require.Equal(t, 1, len(e.tasks))
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require.Equal(t, []int{}, ns)
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e.tasks[0]()
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require.Equal(t, []int{1}, ns)
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})
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}
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