58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
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// Copyright 2015 CoreOS, Inc.
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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 test
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import (
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"fmt"
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"os"
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"path"
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)
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type MockFilesystem map[string]File
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type File struct {
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Path string
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Contents string
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Directory bool
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}
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func (m MockFilesystem) ReadFile(filename string) ([]byte, error) {
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if f, ok := m[path.Clean(filename)]; ok {
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if f.Directory {
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return nil, fmt.Errorf("read %s: is a directory", filename)
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}
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return []byte(f.Contents), nil
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}
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return nil, os.ErrNotExist
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}
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func NewMockFilesystem(files ...File) MockFilesystem {
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fs := MockFilesystem{}
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for _, file := range files {
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fs[file.Path] = file
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// Create the directories leading up to the file
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p := path.Dir(file.Path)
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for p != "/" && p != "." {
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if f, ok := fs[p]; ok && !f.Directory {
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panic(fmt.Sprintf("%q already exists and is not a directory (%#v)", p, f))
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}
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fs[p] = File{Path: p, Directory: true}
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p = path.Dir(p)
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}
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}
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return fs
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}
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