Tests: Unit test getTitle

Real stubs on stubs.js to be removed in followup

Bug: T160406
Change-Id: I0b56e70f3ff95fc5c0f6f6dc4cf0a6625f1e5fe4

tests/node-qunit/getTitle.test.js

@@ -0,0 +1,101 @@
+var getTitle = require( '../../src/getTitle' );
+
+/* global Map */
+
+QUnit.module( 'getTitle', {
+	beforeEach: function() {
+		this.config = new Map();
+		this.config.set( 'wgArticlePath', '/wiki/$1' );
+
+		this.location = global.location = { hostname: 'en.wikipedia.org' };
+
+		window.mediaWiki.RegExp = {
+			escape: this.sandbox.spy( function( str ) {
+				return str.replace( /([\\{}()|.?*+\-\^$\[\]])/g, '\\$1' );
+			} )
+		};
+
+		window.mediaWiki.Uri = this.sandbox.stub().throws( 'UNIMPLEMENTED' );
+	},
+	afterEach: function() {
+		global.location = null;
+		window.mediaWiki.RegExp = null;
+		window.mediaWiki.Uri = null;
+	}
+} );
+
+QUnit.test( 'it should return the title of a url with a title query param', function ( assert ) {
+	var href = '/w/index.php?title=Foo';
+	window.mediaWiki.Uri.withArgs( href ).returns( {
+		host: this.location.hostname,
+		query: {
+			title: 'Foo'
+		}
+	} );
+
+	assert.equal( getTitle( href, this.config ), 'Foo' );
+} );
+
+QUnit.test( 'it should return the title of a pretty url if it conforms wgArticlePath', function ( assert ) {
+	var href = '/wiki/Foo';
+	window.mediaWiki.Uri.withArgs( href ).returns( {
+		host: this.location.hostname,
+		path: href,
+		query: {}
+	} );
+
+	assert.equal( getTitle( href, this.config ), 'Foo' );
+} );
+
+QUnit.test( 'it should return the title of a pretty url properly decoded', function ( assert ) {
+	var href = '/wiki/%E6%B8%AC%E8%A9%A6';
+	window.mediaWiki.Uri.withArgs( href ).returns( {
+		host: this.location.hostname,
+		path: href,
+		query: {}
+	} );
+
+	assert.equal( getTitle( href, this.config ), '測試' );
+} );
+
+QUnit.test( 'it should skip urls that mw.Uri cannot parse', function ( assert ) {
+	var href = 'javascript:void(0);'; // eslint-disable-line no-script-url
+	window.mediaWiki.Uri.withArgs( href ).throws(
+		new Error( 'Cannot parse' )
+	);
+
+	assert.equal( getTitle( href, this.config ), undefined );
+} );
+
+QUnit.test( 'it should skip urls that are external', function ( assert ) {
+	var href = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';
+	window.mediaWiki.Uri.withArgs( href ).returns( {
+		host: 'www.youtube.com',
+		path: '/watch',
+		query: { v: 'dQw4w9WgXcQ' }
+	} );
+
+	assert.equal( getTitle( href, this.config ), undefined );
+} );
+
+QUnit.test( 'it should skip urls not on article path without one title query param', function ( assert ) {
+	// No params
+	var href = '/Foo';
+	window.mediaWiki.Uri.withArgs( href ).returns( {
+		host: this.location.hostname,
+		path: '/Foo',
+		query: {}
+	} );
+
+	assert.equal( getTitle( href, this.config ), undefined );
+
+	// Multiple query params
+	href = '/Foo?a=1&title=Foo';
+	window.mediaWiki.Uri.withArgs( href ).returns( {
+		host: this.location.hostname,
+		path: '/Foo',
+		query: { a: 1, title: 'Foo' }
+	} );
+
+	assert.equal( getTitle( href, this.config ), undefined );
+} );