Tag: NUnit

Passing parameters to NUnit test via CLI using params

In this post we will discuss yet another useful feature introduced in NUnit 3.x where we can pass a parameter to NUnit test class of C# from Command Line Interface (CLI) using a new feature called –params

Passing parameters

Starting NUnit 3.x, there is an most awaited option introduced for Nunit-console runner, which is passing parameters to test method(s) via CLI using –params

What’s the use case of this?

Consider a scenario something like this, Lets say we have to test application with multiple browsers and we somehow have to parameterize the BrowserType like Firefox,Chrome,IE

Then, we can do it via CLI and pass the parameter to the whole framework to run test based on the parameter (browser type) that we passed.

Here is the complete video of the above discussion

Here is the complete modified code

You can checkout the complete code from GitHub here 

Thanks for reading the post and watching the video!!!

Please leave your comments and let me know if there is anything I should update in this post.

Thanks,
Karthik KK

Handling multiple assert in Selenium with Assert.multiple of NUnit 3.6

In this post we will discuss how to handle multiple assert in Selenium with Assert.multiple of NUnit 3.6, this is one of the most requested feature of NUnit.

NUnit 3.6

Nunit 3.6 released by Jan 9th 2017 has number of notable improvement and features something like this

  • .NET Standard 1.6 is now supported
  • Adds support for Multiple Assert blocks
  • Added the –params option to NUnitLite
  • Theories now support Nullable enums
  • Improved assert error messages to help differentiate differences in values
  • Added warnings with Warn.If(), Warn.Unless() and Assert.Warn()
  • Enabled Path, File and Directory Asserts/Contraints for .NET Core testing
  • Added NonTestAssemblyAttribute for use by third-party developers to indicate that their assemblies reference the NUnit framework, but do not contain tests

Where is Assert.Multiple helpful ?

Consider a scenario something like this

Lets say we have to test multiple properties of an UI element in Selenium

In Nunit test framework, if the first assert fails (not meeting the condition), then the second assertion will not even takes place and the whole test fails (which we all know)

But using new Assert.Multiple method, the code can be written something like this

Benefits of Assert.Multiple

Read more

Parallel execution with Specflow 2.0 + NUnit + Selenium

In the last post we discussed how to work with Specflow 2.0 parallel execution, in this post we will discuss how to run Multiple tests in parallel in multiple browser same time using Specflow + NUnit + Selenium.

Problem with Selenium WebDriver object while running Specflow test in Parallel

Since we will be using selenium webdriver object in many Specflow step definitions and while running tests in parallel, we will encounter NullReferenceException , in order to resolve the problem, we need to use two important techniques

  • Context injection (dependency injection)
  • IOC Container

IOC Container

  • In software engineering, inversion of control (IoC) is a design principle in which custom-written portions of a computer program receive the flow of control from a generic framework.
  • A software architecture with this design inverts control as compared to traditional procedural programming: in traditional programming, the custom code that expresses the purpose of the program calls into reusable libraries to take care of generic tasks, but with inversion of control, it is the framework that calls into the custom, or task-specific, code.

-Source : Wikipedia

So how code looks like for IOC Container?

Here is the complete source code in GitHub https://github.com/executeautomation/SpecflowSeleniumParallel

Here are the complete videos of the above discussion

Video 1

Video 2

Thanks for reading the post and watching the video!!!

Please leave your comments and let me know if there is anything I should update in this post.

Thanks,
Karthik KK

Running Specflow test in Parallel using Specflow 2.0 and NUnit 3.x

In this post we will discuss one of the cool new feature introduced by Specflow 2.0, which is Parallel execution support out-of-box along with NUnit 3.x.

Does NUnit 3.x support parallel execution?

Yes it does, NUnit parallel execution support is discussed in greater details in Selenium automation with C# video series of ExecuteAutomation youtube channel

Parallel execution consideration

In order to achieve parallel test execution, there are some important consideration needed to be taken care before you ensure your test runs properly

Parallel execution with memory isolation (AppDomain)

  • Ensure your test code executing the application is not depends on static states (e.g. external cache, databases etc), if so then
  • This can be achieved by isolating test into AppDomain, this ensures that every test execution thread is hosted in a separate AppDomain and that each thread’s memory

Parallel execution without memory isolation (AppDomain)

  • If your tests do not depend on any static states (ie. do not store any test-specific information in static fields), you can run the tests in parallel without AppDomain isolation

What’s the code change in existing specflow code ?

It’s fairly very simple, just one line of additional change in AssemblyInfo.cs file and you are good to go and the change is this

Here is the complete video of the above discussion

Thanks for reading the post and watching the video!!!

Please leave your comments and let me know if there is anything I should update in this post.

Thanks,
Karthik KK

Introduction to API and Database Testing with Specflow and C#

In this post we will discuss about API and database testing with Specflow and C#.

API

API (Application Program Interface) is a set of routines, protocols, and tools for building software and applications.

API Types

Well, Web service is one of the types of API, but as already said, API is a set of routines, rules and protocol used to build software application

As that said, API can be

  • Web Service
    • Local IIS service
    • Remote web service
    • Cloud web service
  • Windows Service
  • Library
    • Selenium
    • Nunit etc
  • Protocols

Testing API

Testing of API can be done with different tools like

  • SOAP UI
  • Test Complete
  • Ranorex
  • WCF Client (Visual Studio)
  • Fiddler
  • Postman etc

Tool we are going to use for API and database testing

We will be using Visual studio + Specflow + C#

Here is the complete video of the above discussion

Thanks for reading the post and watching the video!!!

Please leave your comments and let me know if there is anything I should update in this post.

Thanks,
Karthik KK

Using NUnit with Selenium C#

In this part we will use NUnit framework with Selenium C# in Visual Studio to execute multiple test methods along with many other features like

  • Initializing the Test method – Before execution
  • Cleaning up the Test method — After execution

NUnit will also give us many other assertion features which will be helpful while trying to assert two objects types, some of the methods are shown below

Splitting our code

In this post, we are going to split the code discussed in our last post to three different methods like

  • Initialize() — Setup
  • ExecuteTest() – Test
  • CleanUp – Teardown

Read more

TDD or BDD Style testing with Fluent Assertions

Fluent Assertions is a set of .Net extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style test.

It runs on following frameworks

  • .Net 3.5,4.0 and 4.5
  • Windows store for Windows 8
  • Silverlight 4 and 5
  • Windows Phone 7.5 and 8

It also supports many unit test frameworks like

  • MSTEST
  • NUnit
  • XUnit
  • Gallio etc

Read more