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// Copyright 2019 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 page
import (
"strconv"
"sync"
"sync/atomic"
"testing"
"github.com/stretchr/testify/assert"
)
func TestPageCache(t *testing.T) {
t.Parallel()
c1 := newPageCache()
changeFirst := func(p Pages) {
p[0].(*testPage).description = "changed"
}
var o1 uint64
var o2 uint64
var wg sync.WaitGroup
var l1 sync.Mutex
var l2 sync.Mutex
var testPageSets []Pages
for i := 0; i < 50; i++ {
testPageSets = append(testPageSets, createSortTestPages(i+1))
}
for j := 0; j < 100; j++ {
wg.Add(1)
go func() {
defer wg.Done()
for k, pages := range testPageSets {
l1.Lock()
p, c := c1.get("k1", nil, pages)
assert.Equal(t, !atomic.CompareAndSwapUint64(&o1, uint64(k), uint64(k+1)), c)
l1.Unlock()
p2, c2 := c1.get("k1", nil, p)
assert.True(t, c2)
assert.True(t, pagesEqual(p, p2))
assert.True(t, pagesEqual(p, pages))
assert.NotNil(t, p)
l2.Lock()
p3, c3 := c1.get("k2", changeFirst, pages)
assert.Equal(t, !atomic.CompareAndSwapUint64(&o2, uint64(k), uint64(k+1)), c3)
l2.Unlock()
assert.NotNil(t, p3)
assert.Equal(t, p3[0].(*testPage).description, "changed")
}
}()
}
wg.Wait()
}
func BenchmarkPageCache(b *testing.B) {
cache := newPageCache()
pages := make(Pages, 30)
for i := 0; i < 30; i++ {
pages[i] = &testPage{title: "p" + strconv.Itoa(i)}
}
key := "key"
b.ResetTimer()
for i := 0; i < b.N; i++ {
cache.getP(key, nil, pages)
}
}
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