Extend an Accessor/Assertion

From STIQ

All getFoo and isFoo methods on the Selenium prototype are added as accessors (storeFoo). For each accessor there is an assertFoo, verifyFoo and waitForFoo registered. An assert method can take up to two parameters, which will be passed the second and third column values in the test. You can also define your own assertions literally as simple "assert" methods, which will also auto-generate "verify" and "waitFor" commands.

Example: Add a valueRepeated assertion, that makes sure that the element value consists of the supplied text repeated. The two commands that would be available in tests would be assertValueRepeated and verifyValueRepeated.

	Selenium.prototype.assertValueRepeated = function(locator, text) {
	    // All locator-strategies are automatically handled by "findElement"
	    var element = this.page().findElement(locator);
	
	    // Create the text to verify
	    var expectedValue = text + text;
	
	    // Get the actual element value
	    var actualValue = element.value;
	
	    // Make sure the actual value matches the expected
	    Assert.matches(expectedValue, actualValue);
	};