 
     func test_view1_less_than_or_equal_constant() {
         let constraint = (view1[.Width] <= 12345)
-        XCTAssertEqual(constraint.firstItem as! UIView, view1)
+        let firstView = constraint.firstItem as! UIView
+        XCTAssertEqual(firstView, view1)
         XCTAssertEqual(constraint.firstAttribute, NSLayoutAttribute.Width)
         XCTAssertEqual(constraint.relation, NSLayoutRelation.LessThanOrEqual)
         XCTAssertNil(constraint.secondItem)


    func test_constant_equal_view1() {
        let constraint = (12345 == view1[.Width])
        XCTAssertEqual(constraint.firstItem as! UIView, view1)
        XCTAssertEqual(constraint.firstAttribute, NSLayoutAttribute.Width)
        XCTAssertEqual(constraint.relation, NSLayoutRelation.Equal)
        XCTAssertNil(constraint.secondItem)


    func test_view1_less_than_or_equal_view2() {
        let constraint = (view1[.Width] <= view2[.Width])
        let firstView = constraint.firstItem as! UIView
        let secondView = constraint.secondItem as! UIView
        XCTAssertEqual(firstView, view1)
        XCTAssertEqual(constraint.firstAttribute, NSLayoutAttribute.Width)
        XCTAssertEqual(constraint.relation, NSLayoutRelation.LessThanOrEqual)
        XCTAssertEqual(secondView, view2)
        XCTAssertEqual(constraint.secondAttribute, NSLayoutAttribute.Width)
        XCTAssertEqual(constraint.multiplier, 1.0)
        XCTAssertEqual(constraint.constant, 0.0)
