Core: Test all factory use cases from intro.js

There is a lot of logic in intro.js; now we test four cases:
1. (implicitly, via QUnit tests) A real browser with window being the global
2. Browserify where there are both global & window variables.
3. Node with jsdom where window is passed manually to the jQuery factory.
4. Pure Node with incorrect window passed; jQuery should throw then.

Previously the second & fourth case was not tested and the third was tested
in a way that interfered with the main test environment.

We now also test if in the Browserify case we're not creating a jQuery global
by default.

Fixes gh-2181
Closes gh-2234

1 files changed, 31 insertions, 0 deletions

diff --git a/build/tasks/node_smoke_tests.js b/build/tasks/node_smoke_tests.js
new file mode 100644
index 000000000..2a741c57a
--- /dev/null
+++ b/build/tasks/node_smoke_tests.js
@@ -0,0 +1,31 @@
+module.exports = function( grunt ) {
+
+	"use strict";
+
+	var fs = require( "fs" ),
+		spawnTest = require( "./lib/spawn_test.js" ),
+		testsDir = "./test/node_smoke_tests/",
+		nodeSmokeTests = [];
+
+	// Fire up all tests defined in test/node_smoke_tests/*.js in spawned sub-processes.
+	// All the files under test/node_smoke_tests/*.js are supposed to exit with 0 code
+	// on success or another one on failure. Spawning in sub-processes is
+	// important so that the tests & the main process don't interfere with
+	// each other, e.g. so that they don't share the require cache.
+
+	fs.readdirSync( testsDir )
+		.filter( function( testFilePath ) {
+			return fs.statSync( testsDir + testFilePath ).isFile();
+		} )
+		.forEach( function( testFilePath ) {
+			var taskName = "node_" + testFilePath.replace( /\.js$/, "" );
+
+			grunt.registerTask( taskName, function() {
+				spawnTest( this.async(), "test/node_smoke_tests/" + testFilePath );
+			} );
+
+			nodeSmokeTests.push( taskName );
+		} );
+
+	grunt.registerTask( "node_smoke_tests", nodeSmokeTests );
+};