54 lines
1.2 KiB
Go
54 lines
1.2 KiB
Go
// Copyright 2016-2021, Pulumi Corporation.
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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 pulumi
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import (
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"sync/atomic"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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)
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func TestWorkGroupActsAsWaitGroup(t *testing.T) {
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check := func(j int) func(*testing.T) {
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return func(*testing.T) {
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var n int32
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wg := &workGroup{}
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wg.Add(j)
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for k := 0; k < j; k++ {
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go func() {
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time.Sleep(10 * time.Millisecond)
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atomic.AddInt32(&n, 1)
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wg.Done()
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}()
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}
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wg.Wait()
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assert.Equal(t, int32(j), atomic.AddInt32(&n, 0))
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}
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}
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t.Run("j=1", check(1))
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t.Run("j=2", check(2))
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t.Run("j=3", check(3))
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t.Run("j=4", check(4))
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// test Wait does not block on empty
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wg := &workGroup{}
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wg.Wait()
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}
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