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89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// Copyright 2018 Google LLC All Rights Reserved.
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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 publish
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import (
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"testing"
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"time"
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"github.com/google/go-containerregistry/pkg/name"
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v1 "github.com/google/go-containerregistry/pkg/v1"
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"github.com/google/go-containerregistry/pkg/v1/random"
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)
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type slowpublish struct {
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sleep time.Duration
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}
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// slowpublish implements Interface
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var _ Interface = (*slowpublish)(nil)
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func (sb *slowpublish) Publish(img v1.Image, ref string) (name.Reference, error) {
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time.Sleep(sb.sleep)
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return makeRef()
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}
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func TestCaching(t *testing.T) {
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duration := 100 * time.Millisecond
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ref := "foo"
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sb := &slowpublish{duration}
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cb, _ := NewCaching(sb)
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previousDigest := "not-a-digest"
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// Each iteration, we test that the first publish is slow and subsequent
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// publishs are fast and return the same reference. For each of these
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// iterations we use a new random image, which should invalidate the
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// cached reference from previous iterations.
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for idx := 0; idx < 3; idx++ {
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img, _ := random.Image(256, 8)
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start := time.Now()
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ref1, err := cb.Publish(img, ref)
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if err != nil {
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t.Errorf("Publish() = %v", err)
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}
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end := time.Now()
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elapsed := end.Sub(start)
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if elapsed < duration {
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t.Errorf("Elapsed time %v, wanted >= %s", elapsed, duration)
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}
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d1 := ref1.String()
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if d1 == previousDigest {
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t.Errorf("Got same digest as previous iteration, wanted different: %v", d1)
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}
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previousDigest = d1
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start = time.Now()
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ref2, err := cb.Publish(img, ref)
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if err != nil {
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t.Errorf("Publish() = %v", err)
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}
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end = time.Now()
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elapsed = end.Sub(start)
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if elapsed >= duration {
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t.Errorf("Elapsed time %v, wanted < %s", elapsed, duration)
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}
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d2 := ref2.String()
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if d1 != d2 {
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t.Error("Got different references, wanted same")
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}
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}
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}
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