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// Copyright 2017-present The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"sync"
"testing"
"github.com/stretchr/testify/require"
)
func TestEvictingStringQueue(t *testing.T) {
assert := require.New(t)
queue := NewEvictingStringQueue(3)
assert.Equal("", queue.Peek())
queue.Add("a")
queue.Add("b")
queue.Add("a")
assert.Equal("b", queue.Peek())
queue.Add("b")
assert.Equal("b", queue.Peek())
queue.Add("a")
queue.Add("b")
assert.Equal([]string{"b", "a"}, queue.PeekAll())
assert.Equal("b", queue.Peek())
queue.Add("c")
queue.Add("d")
// Overflowed, a should now be removed.
assert.Equal([]string{"d", "c", "b"}, queue.PeekAll())
assert.Len(queue.PeekAllSet(), 3)
assert.True(queue.PeekAllSet()["c"])
}
func TestEvictingStringQueueConcurrent(t *testing.T) {
var wg sync.WaitGroup
val := "someval"
queue := NewEvictingStringQueue(3)
for j := 0; j < 100; j++ {
wg.Add(1)
go func() {
defer wg.Done()
queue.Add(val)
v := queue.Peek()
if v != val {
t.Error("wrong val")
}
vals := queue.PeekAll()
if len(vals) != 1 || vals[0] != val {
t.Error("wrong val")
}
}()
}
wg.Wait()
}
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