Testing Promise with Jasmine

There is a good library that provides syntax sugar for Promise validations via Jasmine jasmine-promise-matchers.  It comes hard to test complex result objects, example proposes to use jasmine.objectContaining from jasmine-matchers, but the easier way for the same is just to map promise into tested value and use toBeResolvedWith on a projection from pormise.

	var result = service
	.calMethodReturnsPromise()
	.then(function(data) {
	return data.timeSlots[0].parts[0].slots[0].title; // Map result into smaller projection
	});
	$httpBackend.flush();
	expect(result).toBePromise();
	expect(result).toBeResolved();
	expect(result).toBeResolvedWith(expectedState);

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