Nunit Test Tool

Nunit Test Tool

What is Nunit?

　　Nunit is a TDD tool, which is the same as Junit!

How to Get Nunit

　Open the Visual Studio tool, search for "nunit" in the tool> Extension Manager Online Library in the menu bar (you must be able to connect to the Internet), and click Install, it is more convenient.

 

Nunit User Experience

Create a class library PlugInUnitTest, reference nunit. framework. dll, modify Class1.cs to TestFactory. cs, add the feature [TestFixture] to the class, and add the feature [Test] to the class.

Compile the class library.

If Visual NUnit is not displayed, use Ctl + F7 to open the interface. After selecting the instance, you can click the Run button for execution.

 

Nunit Basics

[TestFixture] indicates that the class contains the test code (this feature can be inherited ). This class must be public and have a default constructor.

[Test] indicates that it is a Test method. The return value of the test method must be void and cannot contain parameters.

[SetUp] attribute: used to identify a method and run it before all tests are started. It is used to initialize some resources, such as initialization classes, before a test.

[TearDown] attribute: used to identify a method and run it after all tests are completed to release some resources.

[Ignore] attribute: used to identify a method, indicating that this method does not need to be tested for some reason (for example, related code is not completed)

 

Nunit common classes and Methods　

Assert (Assert ):

If the assertion fails, no method is returned and an error is reported.

If a method contains multiple assertions, all assertions after the asserted failure will not be executed. For this reason, it is best to use a try statement for each test asserted.

1. Test whether two parameters are equal

　　Assert.AreEqual(　int　expected,　int　actual　);
　　Assert.AreEqual(　decimal　expected,　decimal　actual　);
　　。。。。

2. Test whether two parameters reference the same object.

　　Assert.AreSame(　object　expected,　object　actual　);
　　Assert.AreNotSame(　object　expected,　object　actual　);

3. Test whether an object is contained by an array or list.

　　Assert.Contains(　object　anObject,　IList　collection　);

Comparison assertions:

4. Test whether an object is larger than another object.

　　Assert.Greater(　int　arg1,　int　arg2　);

5. Test whether an object is smaller than another object.

　　Assert.Less(　int　arg1,　int　arg2　);

Type assertions:

　　Assert.IsInstanceOfType(　Type　expected,　object　actual　);

Conditional test:

　　Assert.IsTrue(　bool　condition　);
　　Assert.IsFalse(　bool　condition);
　　Assert.IsNull(　object　anObject　);
　　Assert.IsNotNull(　object　anObject　);
　　Assert.IsNaN(　double　aDouble　);
　　Assert.IsEmpty(　string　aString　);
　　Assert.IsNotEmpty(　string　aString　);
　　Assert.IsEmpty(　ICollection　collection　);
　　Assert.IsNotEmpty(　ICollection　collection　);

String assert: provides many useful methods for verifying string values.

　　StringAssert.Contains(　string　expected,　string　actual　);
　　StringAssert.StartsWith(　string　expected,　string　actual　);
　　StringAssert.EndsWith(　string　expected,　string　actual　);
　　StringAssert.AreEqualIgnoringCase(　string　expected,　string　actual　);