refactor: use explicit mocha imports (#332)

Author: JustinBeckwith

packages/google-cloud-dns/system-test/dns.ts

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 import * as assert from 'assert';
+import {describe, it} from 'mocha';
 import * as fs from 'fs';
 import * as tmp from 'tmp';
 import * as util from 'util';

packages/google-cloud-dns/test/change.ts

@@ -19,6 +19,7 @@ import {
 } from '@google-cloud/common';
 import * as promisify from '@google-cloud/promisify';
 import * as assert from 'assert';
+import {describe, it} from 'mocha';
 import * as proxyquire from 'proxyquire';
 
 import {Change} from '../src/change';

packages/google-cloud-dns/test/index.ts

@@ -21,6 +21,7 @@ import {
 import * as promisify from '@google-cloud/promisify';
 import arrify = require('arrify');
 import * as assert from 'assert';
+import {describe, it} from 'mocha';
 import * as proxyquire from 'proxyquire';
 import {CoreOptions, OptionsWithUri, Response} from 'request';
 

packages/google-cloud-dns/test/record.ts

@@ -14,6 +14,7 @@
 
 import * as promisify from '@google-cloud/promisify';
 import * as assert from 'assert';
+import {describe, it} from 'mocha';
 import * as proxyquire from 'proxyquire';
 
 import {Record} from '../src';

packages/google-cloud-dns/test/zone.ts

@@ -16,6 +16,7 @@ import {ServiceObject, ServiceObjectConfig} from '@google-cloud/common';
 import * as promisify from '@google-cloud/promisify';
 import arrify = require('arrify');
 import * as assert from 'assert';
+import {describe, it} from 'mocha';
 import * as proxyquire from 'proxyquire';
 import {CoreOptions, OptionsWithUri, Response} from 'request';
 import * as uuid from 'uuid';