How to compare object instances in your unit tests quickly?
Depending on the depth of your object graph, you can either use FluentAssertions.ShouldBeEquivalentTo () implement your own equality assertions ( only within your test assembly, NOT your SUT ). With Fluent Assertions you get some nice configuration options and lots of additional assertion extension methods.
How many unit tests should be written in a project?
Writing tests for your code will naturally decouple your code, because it would be more difficult to test otherwise. Fast. It is not uncommon for mature projects to have thousands of unit tests. Unit tests should take very little time to run. Milliseconds. Isolated.
When to use multiple asserts in a unit test?
When introducing multiple asserts into a test case, it is not guaranteed that all of the asserts will be executed. In most unit testing frameworks, once an assertion fails in a unit test, the proceeding tests are automatically considered to be failing. This can be confusing as functionality that is actually working, will be shown as failing.
What are the characteristics of a good unit test?
Characteristics of a good unit test 1 Fast. It is not uncommon for mature projects to have thousands of unit tests. 2 Isolated. Unit tests are standalone, can be run in isolation, and have no dependencies on any outside factors such as a file system or database. 3 Repeatable. 4 Self-Checking. 5 Timely.
How to compare two objects of the same reference type?
There are three ways objects of some reference type T can be compared to each other: With an implementation of IEquatable .Equals (only for types that implement IEquatable ) The rules you absolutely need to know are:
How to compare object instances for equality by their?
Instance of a class when compared with == comes to non-equal. The best way is to ass the cmp function to your class which will do the stuff. In your case cmp (doc1,doc2) It will return -1 if the content wise they are same.
Which is the default comparer for an object?
Since the default comparer for object is usually a referential comparison, we will not be able to use Assert.Equal () to test whether our actual object’s attributes are equal to our expected object’s attributes.