add version and fullVersion to ModeDef

src/mode.js

@@ -22,13 +22,24 @@
  *   minified: boolean,
  *   test: boolean,
  *   log: (string|undefined),
+ *   version: string,
  * }}
  */
 let ModeDef;
 
 /** @typedef {?ModeDef} */
 let mode = null;
 
+/** @typedef {string} */
+const version = '$internalRuntimeVersion$';
+
+/**
+ * `fullVersion` is the prefixed version we serve off of the cdn.
+ * The prefix denotes canary(00) or prod(01) or an experiment version ( > 01).
+ * @type {string}
+ */
+let fullVersion = '';
+
 /**
  * Provides info about the current app.
  * @return {!ModeDef}
@@ -69,13 +80,18 @@ function getMode_() {
       // from the URL.
       location.originalHash || location.hash);
 
+  if (!fullVersion) {
+    fullVersion = getFullVersion_(window, isLocalDev);
+  }
+
   return {
     localDev: isLocalDev,
     // Triggers validation
     development: developmentQuery['development'] == '1' || window.AMP_DEV_MODE,
     minified: process.env.NODE_ENV == 'production',
     test: window.AMP_TEST,
     log: developmentQuery['log'],
+    version: fullVersion,
   };
 }
 
@@ -114,3 +130,27 @@ function parseQueryString_(queryString) {
   }
   return params;
 }
+
+/**
+ * Retrieve the `fullVersion` which will have a numeric prefix
+ * denoting canary/prod/experiment.
+ *
+ * @param {!Window} win
+ * @param {boolean} isLocalDev
+ * @return {string}
+ * @private
+ * @visibleForTesting
+ */
+export function getFullVersion_(win, isLocalDev) {
+  // If it's local dev then we won't actually have a full version so
+  // just use the version.
+  if (isLocalDev) {
+    return version;
+  }
+
+  if (win.AMP_CONFIG && win.AMP_CONFIG.v) {
+    return win.AMP_CONFIG.v;
+  }
+
+  return version;
+}

test/functional/test-3p-frame.js

@@ -116,7 +116,8 @@ describe('3p-frame', () => {
         '"canonicalUrl":"https://foo.bar/baz",' +
         '"pageViewId":"' + docInfo.pageViewId + '","clientId":"cidValue",' +
         '"location":{"href":"' + locationHref + '"},"tagName":"MY-ELEMENT",' +
-        '"mode":{"localDev":true,"development":false,"minified":false}' +
+        '"mode":{"localDev":true,"development":false,"minified":false,' +
+        '"version":"$internalRuntimeVersion$"}' +
         ',"hidden":false,"initialIntersection":{"time":1234567888,' +
         '"rootBounds":{"left":0,"top":0,"width":' + width + ',"height":' +
         height + ',"bottom":' + height + ',"right":' + width +

test/functional/test-mode.js

@@ -0,0 +1,50 @@
+/**
+ * Copyright 2016 The AMP HTML Authors. 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.
+ */
+
+
+import {getFullVersion_} from '../../src/mode';
+import * as sinon from 'sinon';
+
+describe('mode module', () => {
+
+  let sandbox;
+
+  beforeEach(() => {
+    sandbox = sinon.sandbox.create();
+  });
+
+  afterEach(() => {
+    sandbox.restore();
+  });
+
+  it('should default to version', () => {
+    // $internalRuntimeVersion$ doesn't get replaced during test
+    expect(getFullVersion_(window, true)).to.equal('$internalRuntimeVersion$');
+    expect(getFullVersion_(window, false)).to.equal('$internalRuntimeVersion$');
+  });
+
+  it('should use window.AMP_CONFIG.v if not in dev mode', () => {
+    const win = {
+      AMP_CONFIG: {
+        v: '12345',
+      },
+    };
+    expect(getFullVersion_(win, true)).to.equal('$internalRuntimeVersion$');
+    expect(getFullVersion_(win, false)).to.equal('12345');
+    delete win.AMP_CONFIG;
+    expect(getFullVersion_(win, false)).to.equal('$internalRuntimeVersion$');
+  });
+});