cloudinit/datasource/configdrive/configdrive_test.go

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/*
Copyright 2014 CoreOS, Inc.
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 configdrive
import (
"os"
"testing"
)
type mockFilesystem []string
func (m mockFilesystem) readFile(filename string) ([]byte, error) {
for _, file := range m {
if file == filename {
return []byte(filename), nil
}
}
return nil, os.ErrNotExist
}
func TestFetchMetadata(t *testing.T) {
for _, tt := range []struct {
root string
filename string
files mockFilesystem
}{
{
"/",
"",
mockFilesystem{},
},
{
"/",
"/openstack/latest/meta_data.json",
mockFilesystem([]string{"/openstack/latest/meta_data.json"}),
},
{
"/media/configdrive",
"/media/configdrive/openstack/latest/meta_data.json",
mockFilesystem([]string{"/media/configdrive/openstack/latest/meta_data.json"}),
},
} {
cd := configDrive{tt.root, tt.files.readFile}
filename, err := cd.FetchMetadata()
if err != nil {
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t.Fatalf("bad error for %q: want %v, got %q", tt, nil, err)
}
if string(filename) != tt.filename {
t.Fatalf("bad path for %q: want %q, got %q", tt, tt.filename, filename)
}
}
}
func TestFetchUserdata(t *testing.T) {
for _, tt := range []struct {
root string
filename string
files mockFilesystem
}{
{
"/",
"",
mockFilesystem{},
},
{
"/",
"/openstack/latest/user_data",
mockFilesystem([]string{"/openstack/latest/user_data"}),
},
{
"/media/configdrive",
"/media/configdrive/openstack/latest/user_data",
mockFilesystem([]string{"/media/configdrive/openstack/latest/user_data"}),
},
} {
cd := configDrive{tt.root, tt.files.readFile}
filename, err := cd.FetchUserdata()
if err != nil {
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t.Fatalf("bad error for %q: want %v, got %q", tt, nil, err)
}
if string(filename) != tt.filename {
t.Fatalf("bad path for %q: want %q, got %q", tt, tt.filename, filename)
}
}
}
func TestConfigRoot(t *testing.T) {
for _, tt := range []struct {
root string
configRoot string
}{
{
"/",
"/openstack",
},
{
"/media/configdrive",
"/media/configdrive/openstack",
},
} {
cd := configDrive{tt.root, nil}
if configRoot := cd.ConfigRoot(); configRoot != tt.configRoot {
t.Fatalf("bad config root for %q: want %q, got %q", tt, tt.configRoot, configRoot)
}
}
}
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func TestNewDatasource(t *testing.T) {
for _, tt := range []struct {
root string
expectRoot string
}{
{
root: "",
expectRoot: "",
},
{
root: "/media/configdrive",
expectRoot: "/media/configdrive",
},
} {
service := NewDatasource(tt.root)
if service.root != tt.expectRoot {
t.Fatalf("bad root (%q): want %q, got %q", tt.root, tt.expectRoot, service.root)
}
}
}