( function ( mw ) {

	function createStubUserSettings( isEnabled ) {
		return {
			hasIsEnabled: function () {
				return isEnabled !== undefined;
			},
			getIsEnabled: function () {
				return Boolean(isEnabled);
			}
		};
	}

	QUnit.module( 'ext.popups#isEnabled (logged out)', {
		setup: function () {
			this.user = mw.popups.tests.stubs.createStubUser( /* isAnon = */ true );
		}
	} );

	QUnit.test( 'is should handle logged out users', function ( assert ) {
		var user = mw.popups.tests.stubs.createStubUser( /* isAnon = */ true ),
			cases,
			userSettings,
			config = new mw.Map();

		cases = [
			[ undefined, true, 'When the user hasn\'t enabled or disabled the feature' ],
			[ false, false, 'When the user has disabled the feature' ],
			[ true, true, 'When the user has enabled the feature' ]
		];

		$.each( cases, function ( _, testCase ) {
			userSettings = createStubUserSettings( testCase[ 0 ] );

			assert.equal(
				mw.popups.isEnabled( user, userSettings, config ),
				testCase[ 1 ],
				testCase[ 2 ]
			);
		} );

		// ---

		config.set( 'wgPopupsBetaFeature', true );

		assert.notOk(
			mw.popups.isEnabled( user, userSettings, config ),
			'When Page Previews is enabled as a beta feature, then it\'s not enabled for logged out users.'
		);
	} );

	QUnit.test( 'it should handle logged in users', function ( assert ) {
		var user = mw.popups.tests.stubs.createStubUser( /* isAnon = */ false ),
			userSettings = createStubUserSettings( false ),
			config = new mw.Map();

		config.set( 'wgPopupsShouldSendModuleToUser', true );

		assert.ok(
			mw.popups.isEnabled( user, userSettings, config ),
			'If the user is logged in and Page Previews has booted, then it\'s enabled.'
		);
	} );

}( mediaWiki ) );