Introduction:
Jun 26, 2019 I am trying to get the 'NUnit 2 Test Adapter' work with either VS2015/2017 but facing some problems. I have installed the 'NUnit 2 Test Adapter' extension but when I open an existing solution which contains projects with NUnit test cases and build it, the test cases doesnt list in the TestExplorer of visual studio. I paired up with someone else who knew C#, so it was a good opportunity to try doing the kata in Visual Studio for Mac! Although I've kicked the tires on VS4Mac a bit, one of the things I hadn't tried testing out was, well. Method 1: An NUnit Library Project. The easiest method is to just create a new 'NUnit Library Project'. Use Visual Studio to define and run unit tests to maintain code health, ensure code coverage, and find errors and faults before your customers do. Run your unit tests frequently to make sure your code is working properly. Create unit tests. This section describes how to create a unit test project. Open the project that you want to test in. Both Visual Studio 2012 (Update 1 or later) and TFS Build is NuGet test adapter aware! Since NuGet installs the adapters into the solution itself, the adapters follow the solution, and the tests will “just work” without any need from the developer to install anything. NUnit Adapter on NuGet.
NUnit framework is an open–source unit testing framework in C#. It is an updated version of JUnit. The .Net Foundationhas developer this type of unit test framework. It is used for the development and execution of unit tests in the .Net programming language.
Purpose of using NUnit Framework:
In the NUnit framework,each module is tested independently to ensure that the objective is met. The NUnit Framework containsa different type of attribute that is used during the unit tests. They are used to define Test –Fixtures, Test methods, Expected Exception, and Ignore methods.
Installation Process: Download and install Visual Studio for development. Based on the requirement, you can download the Community/Professional/Enterprise edition of Visual Studio 2019.
https://visualstudio.microsoft.com/downloads/Based on the OS, we can select the packages for the NUnit testing framework in the Visual Studio.Once the installation is complete, we will need to restart the machine before Visual Studio 2019 can be used.In NUnit, first, weneed to create a new project in Visual Studio. Go to Visual Studio → New → Project.In the created project, will have the basic test with NUnit annotations used in the source code.You need to reference the nunit.framework.dll. If you use NuGet, this will be done for you automatically while installing NUnit.After installing the NUnit, we need one more dll that needs to be installed in the project.
NUnit Test Adapter for Visual StudioThe NUnit Test Adapter allows you to run NUnit tests in Visual Studio.
Note:If you are not adding this component in the project, you may not be able to find the tests in test Explorer.Navigate to Tools→ NuGet Package Manager→ Manage NuGet Packages for Solution and search for “NUnit & NUnit Test Adapter”.You can find both the Libraries in project reference.Setup Selenium WebDriver with Visual Studio in C#:
1.Navigate to Tools → NuGet Package Manager → Manager NuGet Packages for Solution and search for ‘Selenium’.After clicking the ‘Install’ button, click ‘Okay’ and then click ‘ I Accept’.After the installation of Selenium WebDriver, you can start automation testing using NUnit in the selenium C# framework.As we are making use of local Selenium WebDriver, we should download the Selenium WebDriver for Chrome andinstall/copy it to the location where the Chrome web browser (Chrome.exe) is located.
List of Attributes/Annotation(Order of Execution):
*OneTimeSetUp – If we use this attribute, then the execution starts from this section.
*SetUp – Setup executes after ‘OneTimeSetUp’
*Test – Test Executes after ‘SetUp’
*TearDown – Test Executes after ‘Test’
*OneTimeTearDown –This attribute executes at last.
Note:If we do not use ‘OnetimeSetUp’ & ‘OneTimeTearDown’, then the Execution starts from ‘SetUp’ and the End of ‘TearDown’.
Find the below usage of each Attribute/Annotations used in NUnit framework,How Can I Run NUnit Tests In Visual Studio 2017 .. - Stack ..
TextFixture Attribute:The TestFixture attribute is asign that a class contains test methods. After you mention this attribute to a class in your project, the Test Runner application will scan it for test methods.
Test:The Test attribute indicates that a method within a test fixture should run by the Test Runner application. The method must be public, return void, and can’t be run when the Test Fixture is run.Now,let us check our test. Go to the Visual Studio Test Explorer.If we check the Left side of Visual Studio, it will open a pane called Test Explorer with all the test scenarios as follows.
SetUp:It is used when you want to execute a piece of code in each test case. It identifies a method to be executed each time before a Method or Test is executed.
Test:Next, the execution moves to ‘Test’ Attribute.
Tear Down:If we check the sequence of execution, the method that used TearDown attribute will be executed last after the execution of the Test case.Microsoft Visual Studio 2015: Test Explorer Not Displaying ..
Here we see the below a few more attributes:
ExpectedException Attribute:NUnit 2 Test Adapter - Visual Studio MarketplaceBy using this attribute, we need to install ‘MSTest.TestFramework’ package. You can see the error before installing that package.Here, you can see the exception method that has the custom exception.
Ignore Attribute:The Ignore attribute is required to indicate that a test should not be run on a method. You can see the output in Test Detail summary.
OneTimeSetUp:It will run just once before any of the tests in the class. So, if you run the class, the method annotated with [OneTimeSetUp] will get executed just once before the first test, and then never again.
OneTimeTearDown:It will run once after all the tests are completed. Common usage for these annotations is opening and closing connections before all the tests.
Pros:
Annotations used in NUnit help in speeding up test development & execution as tests can be executed with numerous input values.TDD is primarily useful as unit tests are instrumental in finding issues/bugs during the earlystages of development. NUnit test framework can be used with Selenium if you plan to use TDD (Test Driven Development) for the test activity.Provides you the ability to run your test cases in parallel.Using NUnit, you can execute test cases from console runner by either a third-party automation testing tool or by the NUnit Test Adapter inside the Visual Studio.
