1 files changed, 36 insertions, 0 deletions
diff --git a/tests/qunit/suites/resources/mediawiki/mediawiki.storage.test.js b/tests/qunit/suites/resources/mediawiki/mediawiki.storage.test.js
new file mode 100644
index 00000000..6cef4a7c
--- /dev/null
+++ b/tests/qunit/suites/resources/mediawiki/mediawiki.storage.test.js
@@ -0,0 +1,36 @@
+( function ( mw ) {
+	QUnit.module( 'mediawiki.storage' );
+
+	QUnit.test( 'set/get with localStorage', 3, function ( assert ) {
+		this.sandbox.stub( mw.storage, 'localStorage', {
+			setItem: this.sandbox.spy(),
+			getItem: this.sandbox.stub()
+		} );
+
+		mw.storage.set( 'foo', 'test' );
+		assert.ok( mw.storage.localStorage.setItem.calledOnce );
+
+		mw.storage.localStorage.getItem.withArgs( 'foo' ).returns( 'test' );
+		mw.storage.localStorage.getItem.returns( null );
+		assert.strictEqual( mw.storage.get( 'foo' ), 'test', 'Check value gets stored.' );
+		assert.strictEqual( mw.storage.get( 'bar' ), null, 'Unset values are null.' );
+	} );
+
+	QUnit.test( 'set/get without localStorage', 3, function ( assert ) {
+		this.sandbox.stub( mw.storage, 'localStorage', {
+			getItem: this.sandbox.stub(),
+			removeItem: this.sandbox.stub(),
+			setItem: this.sandbox.stub()
+		} );
+
+		mw.storage.localStorage.getItem.throws();
+		assert.strictEqual( mw.storage.get( 'foo' ), false );
+
+		mw.storage.localStorage.setItem.throws();
+		assert.strictEqual( mw.storage.set( 'foo', 'test' ), false );
+
+		mw.storage.localStorage.removeItem.throws();
+		assert.strictEqual( mw.storage.remove( 'foo', 'test' ), false );
+	} );
+
+}( mediaWiki ) );