ImageAsserts.m

- (void)compareColorArrayRGBs:(NSArray *)array toExpected:(NSArray *)expected {
  XCTAssertEqual([expected count], [array count]);
  for (int i = 0; i < [expected count]; i++) {
    UIColor *color = [array objectAtIndex:i];
    UIColor *expectedColor = [expected objectAtIndex:i];

    CGFloat r, g, b, a;
    CGFloat eR, eG, eB, eA;
    [color getRed:&r green:&g blue:&b alpha:&a];
    [expectedColor getRed:&eR green:&eG blue:&eB alpha:&eA];

    XCTAssertEqualWithAccuracy(r, eR, 0.005);
    XCTAssertEqualWithAccuracy(g, eG, 0.005);
    XCTAssertEqualWithAccuracy(b, eB, 0.005);
    XCTAssertEqualWithAccuracy(a, eA, 0.005);
  }
}