build(aio): ensure all doc tests are run

It is not possible to run all the docs tests directly via the  jasmine CLI.
Instead we now have a small script that will run jasmine via its library.

aio/package.json

@@ -29,7 +29,7 @@
     "docs": "dgeni ./tools/transforms/angular.io-package",
     "docs-watch": "node tools/transforms/authors-package/watchr.js",
     "docs-lint": "eslint --ignore-path=\"tools/transforms/.eslintignore\" tools/transforms",
-    "docs-test": "jasmine tools/transforms/**/*.spec.js",
+    "docs-test": "node tools/transforms/test.js",
     "~~update-webdriver": "webdriver-manager update --standalone false --gecko false",
     "boilerplate:add": "node ./tools/examples/add-example-boilerplate add",
     "boilerplate:remove": "node ./tools/examples/add-example-boilerplate remove",

aio/tools/transforms/test.js

@@ -0,0 +1,17 @@
+/*
+ * Use this script to run the tests for the doc generation
+ * We cannot use the Jasmine CLI directly because it doesn't seem to
+ * understand the glob and only runs one spec file.
+ *
+ * Equally we cannot use a jasmine.json config file because it doesn't
+ * allow us to set the projectBaseDir, which means that you have to run
+ * jasmine CLI from this directory.
+ *
+ * Using a file like this gives us full control and keeps the package.json
+ * file clean and simple.
+ */
+
+const Jasmine = require('jasmine');
+const jasmine = new Jasmine({ projectBaseDir: __dirname });
+jasmine.loadConfig({ spec_files: ['**/*.spec.js'] });
+jasmine.execute();