| // Copyright 2014 Google Inc. All Rights Reserved. |
| // |
| // 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 testutil contains helper functions for writing tests. |
| package testutil |
| |
| import ( |
| "io/ioutil" |
| "log" |
| "os" |
| |
| "golang.org/x/net/context" |
| "golang.org/x/oauth2" |
| "golang.org/x/oauth2/google" |
| ) |
| |
| const ( |
| envProjID = "GCLOUD_TESTS_GOLANG_PROJECT_ID" |
| envPrivateKey = "GCLOUD_TESTS_GOLANG_KEY" |
| ) |
| |
| // ProjID returns the project ID to use in integration tests, or the empty |
| // string if none is configured. |
| func ProjID() string { |
| projID := os.Getenv(envProjID) |
| if projID == "" { |
| return "" |
| } |
| return projID |
| } |
| |
| // TokenSource returns the OAuth2 token source to use in integration tests, |
| // or nil if none is configured. TokenSource will log.Fatal if the token |
| // source is specified but missing or invalid. |
| func TokenSource(ctx context.Context, scopes ...string) oauth2.TokenSource { |
| key := os.Getenv(envPrivateKey) |
| if key == "" { |
| return nil |
| } |
| jsonKey, err := ioutil.ReadFile(key) |
| if err != nil { |
| log.Fatalf("Cannot read the JSON key file, err: %v", err) |
| } |
| conf, err := google.JWTConfigFromJSON(jsonKey, scopes...) |
| if err != nil { |
| log.Fatalf("google.JWTConfigFromJSON: %v", err) |
| } |
| return conf.TokenSource(ctx) |
| } |