132 lines
3.0 KiB
Go
132 lines
3.0 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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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 testing
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import (
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"io"
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"os"
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"sync"
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"golang.org/x/net/context"
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osInterface "github.com/kubernetes-incubator/cri-containerd/pkg/os"
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)
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// FakeOS mocks out certain OS calls to avoid perturbing the filesystem
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// If a member of the form `*Fn` is set, that function will be called in place
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// of the real call.
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type FakeOS struct {
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sync.Mutex
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MkdirAllFn func(string, os.FileMode) error
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RemoveAllFn func(string) error
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OpenFifoFn func(context.Context, string, int, os.FileMode) (io.ReadWriteCloser, error)
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StatFn func(name string) (os.FileInfo, error)
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errors map[string]error
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}
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var _ osInterface.OS = &FakeOS{}
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// getError get error for call
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func (f *FakeOS) getError(op string) error {
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f.Lock()
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defer f.Unlock()
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err, ok := f.errors[op]
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if ok {
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delete(f.errors, op)
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return err
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}
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return nil
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}
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// InjectError inject error for call
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func (f *FakeOS) InjectError(fn string, err error) {
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f.Lock()
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defer f.Unlock()
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f.errors[fn] = err
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}
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// InjectErrors inject errors for calls
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func (f *FakeOS) InjectErrors(errs map[string]error) {
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f.Lock()
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defer f.Unlock()
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for fn, err := range errs {
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f.errors[fn] = err
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}
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}
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// ClearErrors clear errors for call
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func (f *FakeOS) ClearErrors() {
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f.Lock()
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defer f.Unlock()
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f.errors = make(map[string]error)
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}
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// NewFakeOS creates a FakeOS.
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func NewFakeOS() *FakeOS {
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return &FakeOS{
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errors: make(map[string]error),
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}
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}
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// MkdirAll is a fake call that invokes MkdirAllFn or just returns nil.
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func (f *FakeOS) MkdirAll(path string, perm os.FileMode) error {
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if err := f.getError("MkdirAll"); err != nil {
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return err
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}
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if f.MkdirAllFn != nil {
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return f.MkdirAllFn(path, perm)
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}
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return nil
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}
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// RemoveAll is a fake call that invokes RemoveAllFn or just returns nil.
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func (f *FakeOS) RemoveAll(path string) error {
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if err := f.getError("RemoveAll"); err != nil {
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return err
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}
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if f.RemoveAllFn != nil {
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return f.RemoveAllFn(path)
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}
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return nil
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}
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// OpenFifo is a fake call that invokes OpenFifoFn or just returns nil.
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func (f *FakeOS) OpenFifo(ctx context.Context, fn string, flag int, perm os.FileMode) (io.ReadWriteCloser, error) {
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if err := f.getError("OpenFifo"); err != nil {
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return nil, err
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}
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if f.OpenFifoFn != nil {
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return f.OpenFifoFn(ctx, fn, flag, perm)
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}
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return nil, nil
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}
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// Stat is a fake call that invokes Stat or just return nil.
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func (f *FakeOS) Stat(name string) (os.FileInfo, error) {
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if err := f.getError("Stat"); err != nil {
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return nil, err
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}
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if f.StatFn != nil {
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return f.StatFn(name)
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}
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return nil, nil
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}
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