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121 lines
3.7 KiB
Go
121 lines
3.7 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package container
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import (
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"errors"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/client/record"
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"k8s.io/kubernetes/pkg/util"
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)
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func TestPuller(t *testing.T) {
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "test_pod",
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Namespace: "test-ns",
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UID: "bar",
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ResourceVersion: "42",
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SelfLink: "/api/v1/pods/foo",
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}}
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cases := []struct {
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containerImage string
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policy api.PullPolicy
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calledFunctions []string
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inspectErr error
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pullerErr error
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expectedErr []error
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}{
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{ // pull missing image
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containerImage: "missing_image",
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policy: api.PullIfNotPresent,
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calledFunctions: []string{"IsImagePresent", "PullImage"},
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inspectErr: nil,
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pullerErr: nil,
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expectedErr: []error{nil}},
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{ // image present, dont pull
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containerImage: "present_image",
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policy: api.PullIfNotPresent,
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calledFunctions: []string{"IsImagePresent"},
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inspectErr: nil,
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pullerErr: nil,
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expectedErr: []error{nil, nil, nil}},
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// image present, pull it
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{containerImage: "present_image",
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policy: api.PullAlways,
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calledFunctions: []string{"IsImagePresent", "PullImage"},
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inspectErr: nil,
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pullerErr: nil,
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expectedErr: []error{nil, nil, nil}},
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// missing image, error PullNever
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{containerImage: "missing_image",
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policy: api.PullNever,
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calledFunctions: []string{"IsImagePresent"},
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inspectErr: nil,
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pullerErr: nil,
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expectedErr: []error{ErrImageNeverPull, ErrImageNeverPull, ErrImageNeverPull}},
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// missing image, unable to inspect
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{containerImage: "missing_image",
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policy: api.PullIfNotPresent,
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calledFunctions: []string{"IsImagePresent"},
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inspectErr: errors.New("unknown inspectError"),
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pullerErr: nil,
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expectedErr: []error{ErrImageInspect, ErrImageInspect, ErrImageInspect}},
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// missing image, unable to fetch
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{containerImage: "typo_image",
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policy: api.PullIfNotPresent,
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calledFunctions: []string{"IsImagePresent", "PullImage"},
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inspectErr: nil,
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pullerErr: errors.New("404"),
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expectedErr: []error{ErrImagePull, ErrImagePull, ErrImagePullBackOff, ErrImagePull, ErrImagePullBackOff, ErrImagePullBackOff}},
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}
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for i, c := range cases {
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container := &api.Container{
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Name: "container_name",
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Image: c.containerImage,
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ImagePullPolicy: c.policy,
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}
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backOff := util.NewBackOff(time.Second, time.Minute)
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fakeClock := util.NewFakeClock(time.Now())
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backOff.Clock = fakeClock
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fakeRuntime := &FakeRuntime{}
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fakeRecorder := &record.FakeRecorder{}
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puller := NewImagePuller(fakeRecorder, fakeRuntime, backOff)
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fakeRuntime.ImageList = []Image{{"present_image", nil, 0}}
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fakeRuntime.Err = c.pullerErr
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fakeRuntime.InspectErr = c.inspectErr
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for tick, expected := range c.expectedErr {
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fakeClock.Step(time.Second)
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err, _ := puller.PullImage(pod, container, nil)
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fakeRuntime.AssertCalls(c.calledFunctions)
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assert.Equal(t, expected, err, "in test %d tick=%d", i, tick)
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}
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}
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}
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