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_setup.js
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/**
* Copyright 2017, Google, 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.
*/
'use strict';
const childProcess = require(`child_process`);
const sinon = global.sinon = require(`sinon`);
const test = global.test = require(`ava`);
global.run = (cmd, cwd) => {
return childProcess.execSync(cmd, { cwd: cwd }).toString().trim();
};
global.runAsync = (cmd, cwd, cb) => {
return new Promise((resolve, reject) => {
childProcess.exec(cmd, { cwd: cwd }, (err, stdout, stderr) => {
if (err) {
reject(err);
return;
}
if (stdout) {
resolve(stdout.toString().trim());
} else {
resolve(stdout);
}
});
});
};
class Try {
constructor (test) {
this._maxTries = 10;
this._maxDelay = 20000;
this._timeout = 60000;
this._iteration = 1;
this._multiplier = 1.3;
this._delay = 500;
this._test = test;
}
execute () {
if (this._iteration >= this._maxTries) {
this.reject(this._error || new Error('Reached maximum number of tries'));
return;
} else if ((Date.now() - this._start) >= this._timeout) {
this.reject(this._error || new Error('Test timed out'));
return;
}
try {
this._test();
this.resolve();
} catch (err) {
this._error = err;
this._iteration++;
this._delay = Math.min(this._delay * this._multiplier, this._maxDelay);
setTimeout(() => this.execute(), this._delay);
}
}
timeout (timeout) {
this._timeout = timeout;
}
tries (maxTries) {
this._maxTries = maxTries;
}
start () {
this._start = Date.now();
this.promise = new Promise((resolve, reject) => {
this.resolve = resolve;
this.reject = reject;
this.execute();
});
return this.promise;
}
}
global.tryTest = (test) => {
return new Try(test);
};
global.stubConsole = () => {
if (typeof console.log.restore !== `function` && typeof console.error.restore !== `function`) {
if (process.env.DEBUG) {
sinon.spy(console, `error`);
sinon.spy(console, `log`);
} else {
sinon.stub(console, `error`);
sinon.stub(console, `log`, (a, b, c) => {
if (typeof a === `string` && a.indexOf(`\u001b`) !== -1 && typeof b === `string`) {
console.log.apply(console, arguments);
}
});
}
}
};
global.restoreConsole = () => {
if (typeof console.log.restore === `function`) {
console.log.restore();
}
if (typeof console.error.restore === `function`) {
console.error.restore();
}
};
test.beforeEach((t) => {
t.truthy(process.env.GCLOUD_PROJECT, `Must set GCLOUD_PROJECT environment variable!`);
t.truthy(process.env.GOOGLE_APPLICATION_CREDENTIALS, `Must set GOOGLE_APPLICATION_CREDENTIALS environment variable!`);
});