docs(samples): video beta samples (#123)

* Video beta

* Video beta object tracking/text detection

* Fixing review issues

* Inc. -> LLC

* trigger kokoro to check issue

* debugging sample test failure issue

* debugging errors

* debugging - attempt 2

* debugging - attempt 3

* debugging attempt - 4

* debugging - attempt 2

* Fixing review comments

video-intelligence/package.json

@@ -10,7 +10,7 @@
   },
   "scripts": {
     "cover": "nyc --reporter=lcov --cache ava -T 20s --verbose test/*.test.js ./system-test/*.test.js && nyc report",
-    "test": "ava -T 5m --verbose system-test/*.test.js"
+    "test": "ava -T 10m --serial --verbose system-test/*.test.js"
   },
   "dependencies": {
     "@google-cloud/video-intelligence": "^1.4.1",

video-intelligence/system-test/analyze.v1p2beta1.test.js

@@ -0,0 +1,53 @@
+/**
+ * Copyright 2018, Google, LLC
+ * 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.
+ */
+
+// https://cloud.google.com/video-intelligence/docs/
+
+'use strict';
+
+const path = require(`path`);
+const test = require(`ava`);
+const tools = require(`@google-cloud/nodejs-repo-tools`);
+
+const cmd = `node analyze.v1p2beta1.js`;
+const cwd = path.join(__dirname, `..`);
+
+const shortUrl = `gs://nodejs-docs-samples/video/googlework_short.mp4`;
+const url = `gs://nodejs-docs-samples/video/cat.mp4`;
+const file1 = `resources/cat.mp4`;
+const file2 = `resources/googlework_short.mp4`;
+const possibleTexts = /Google|GOOGLE|SUR|OMAR|ROTO|Vice President|58oo9|LONDRES|PARIS|METRO|RUE|CARLO/;
+
+test.serial(`should detect text in a GCS file`, async t => {
+  const output = await tools.runAsync(`${cmd} video-text-gcs ${shortUrl}`, cwd);
+  t.regex(output, possibleTexts);
+});
+
+test.serial(`should detect text in a local file`, async t => {
+  const output = await tools.runAsync(`${cmd} video-text ${file2}`, cwd);
+  t.regex(output, possibleTexts);
+});
+
+test.serial(`should track objects in a GCS file`, async t => {
+  const output = await tools.runAsync(`${cmd} track-objects-gcs ${url}`, cwd);
+  t.regex(output, /cat/);
+  t.regex(output, /Confidence: \d+\.\d+/);
+});
+
+test.serial(`should track objects in a local file`, async t => {
+  const output = await tools.runAsync(`${cmd} track-objects ${file1}`, cwd);
+  t.regex(output, /cat/);
+  t.regex(output, /Confidence: \d+\.\d+/);
+});