Wrote a test for the scripts to test if my changes broke anything.

elixir-test-app/test/scripts.js

@@ -0,0 +1,63 @@
+var fs     = require('fs');
+var gulp   = require('gulp');
+var remove = require('rimraf');
+var Elixir = require('laravel-elixir');
+
+
+describe('Scripts Task', function() {
+
+    beforeEach(() => {
+        Elixir.tasks = Elixir.config.tasks = [];
+    });
+
+    it('merges scripts together', function(done) {
+        Elixir(mix => mix.scripts(['lib1.js', 'lib2.js']));
+
+        runGulp(() => {
+            shouldExist('public/js/all.js');
+
+            done();
+        });
+    });
+
+    it('merges to any file the user wishes', function(done) {
+        Elixir(mix => mix.scripts(['lib1.js', 'lib2.js'], './public/js/merged.js'));
+
+        runGulp(() => {
+            shouldExist('public/js/merged.js');
+
+            done();
+        });
+    });
+
+    it('applies a custom base directory', function(done) {
+        Elixir(mix => {
+            // We'll copy files over to a custom directory to test this.
+            mix.copy('./resources/assets/js', './resources/assets/scripts');
+
+            mix.scripts(['lib1.js', 'lib2.js'], null, './resources/assets/scripts');
+        });
+
+        runGulp(() => {
+            shouldExist('public/js/all.js');
+
+            done();
+        });
+    });
+
+});
+
+
+var shouldExist = (file) => {
+    return fs.existsSync(file).should.be.true;
+};
+
+
+var runGulp = assertions => {
+    gulp.start('default', () => {
+        assertions();
+
+        remove.sync('./public/js');
+        remove.sync('./resources/assets/scripts');
+    });
+};