12. If your Question class implements equals then you can just do. assertEquals (expectedMap, hashMap); assertTrue (expectedMap.equals (hashMap)); The Map interface specifies that two Maps are equal if they contain equal elements for equal keys. Share. Epsilon is your "fuzz factor," since doubles may not be exactly equal. Epsilon lets you describe how close they have to be. If you were expecting 3.14159 but would take anywhere from 3.14059 to 3.14259 (that is, within 0.001), then you should write something like. double myPi = 22.0d / 7.0d; //Don't use this in real life! assertEquals (3.14159 Performing x.equals (y) would yield the same result as y.equals (x). Performing x.equals (x) would return true. Performing x.equals (y) == true and y.equals (z) == true implies that x.equals (z) == true. This question has certainly been asked many times before though. See here: Overriding equals and hashCode in Java. The "more assertThat" way of doing things would be: Map expectedData = Collections.singletonMap ("key", "value"); asssertThat (data, is (expectedData)); Please note: Maybe you need type hints for the call to singletonMap. Besides the is matcher, there are other matchers that would allow you to check that data contains your 3 Answers. Sorted by: 2. Simply negate the result of equals: !string.equals ("ABC") String.equals returns a boolean value, to get the inverse of any boolean value, use the ! operator: boolean t = true; // t will be true boolean f = !t; // f will be false. Share. If you are extremely risk-averse, you can override the equals method to ensure that it isn’t invoked accidentally: The equals method implements an equivalence relation. It has these properties: Reflexive: For any non-null reference value x, x.equals (x) must return true. A Java Object class has the equals() and hashCode() methods defined. Since all classes in Java inherit from the Object class, they have the default implementation of the methods as well. The equals() method is meant to assert the equality of two objects, and the default implementation implies that if two objects are of the same identity, they for each property in public getter/setter method pairs do create instance of class under test, object x create instance of class under test, object y change property of y to contain a different value if property is insignificant then assert x.equals(y) else assert x.equals(y) is false end if end for You need to use the method equals () when comparing a string, otherwise you're just comparing the object references to each other, so in your case you want: equals, not Equals. you can use equals () method to statisfy your demands. == in java programming language has a different meaning! Java Program to Make All the Array Elements Equal to One by GCD Operations; Java Program to Get the First and the Last Element of a Linked List; Java Program to Implement the Karatsuba Multiplication Algorithm; Java Program to Check the Eligibility of TPP Students for Appearing in Interviews; Java Program to Swap Two Numbers Using Bitwise XOR Hom6Ko1.