Var executionBrowserAttribute = memberInfo. Private BrowserTypes GetExecutionBrowserMethodLevel( MemberInfo memberInfo) NotSet)Įlse if ( classBrowserType != BrowserTypes. GetExecutionBrowserMethodLevel( memberInfo) DeclaringType) īrowserTypes methodBrowserType = this. GetExecutionBrowserClassLevel( memberInfo. Firefox īrowserTypes classBrowserType = this. Private BrowserTypes GetExecutionBrowser( MemberInfo memberInfo)īrowserTypes result = BrowserTypes. Public override void PostTestCleanup( TestContext context, MemberInfo memberInfo) Public override void PreTestInit( TestContext context, MemberInfo memberInfo) Public BrowserLaunchTestBehaviorObserver( ITestExecutionSubject testExecutionSubject) Public class BrowserLaunchTestBehaviorObserver : BaseTestBehaviorObserver The primary goal is to create a way so that the user to be able to control the current test’s execution browser type through attributes. Now it is time to utilize all these classes to solve some practical problems. Generic Repository Design Pattern- Test Data Preparation Configure Test Execution Browser with Attribute You can read part of three of the chapters:ĭefining High-Quality Test Attributes for Automated Testsīenchmarking for Assessing Automated Test Components Performance Also, the base class constructor requires a ITestExecutionSubject parameter in order to be able to associate the current observer to the subject.įor more detailed overview and usage of many more design patterns and best practices in automated testing, check my book “ Design Patterns for High-Quality Automated Tests, C# Edition, High-Quality Tests Attributes, and Best Practices “. TestInstantiated( memberInfo) Īs all notification methods are empty, the child class needs only to override the necessary ones. Public void TestInstantiated( MemberInfo memberInfo)ĬurrentObserver. Public void PostTestCleanup( TestContext context, MemberInfo memberInfo)ĬurrentObserver. Public void PreTestCleanup( TestContext context, MemberInfo memberInfo)ĬurrentObserver. Public void PostTestInit( TestContext context, MemberInfo memberInfo)ĬurrentObserver.
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Public void PreTestInit( TestContext context, MemberInfo memberInfo)įoreach ( var currentObserver in this. Public void Detach( ITestBehaviorObserver observer) Public void Attach( ITestBehaviorObserver observer) Private readonly List testBehaviorObservers Public class MSTestExecutionSubject : ITestExecutionSubject The first step to the integration of the Observer Design Pattern in the automation test framework is to create the ISubject interface. So there is a relationship between the one Subject to the many Observers. There are many observers, and they rely on the Subject to tell them when its state changes. The observers, on the other hand, use the state, even if they don’t own it. With the Observer Design Pattern, the Subject is the object that contains the state and controls it. The following class structure is going to be used. For example configure current test execution browser or fail the test if the owner attribute is not set.
OBSERVER PATTERN CODE
The primary goal of the sample code is to provide an easy way to automation engineers to add additional logic to the current test execution via class/test level attributes. Uses the TestExecutionSubject to extends its test execution capabilities via test/class level defined attributes and concrete observers.
![observer pattern observer pattern](http://codippa.com/wp-content/uploads/2018/03/observer.png)
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BaseTest– The parent class for all test classes in the framework.Each observer registers with a specific subject to receiving updates. OwnerTestBehaviorObserver– A concrete observer can be any class that implements IObserver interface.These methods are called at the different points when the subject’s state changes. ITestBehaviorObserver– All potential observers need to implement the observer interface.
OBSERVER PATTERN UPDATE
In addition to the attach and detach methods, the specific subject implements different notification methods that are used to update all of the subscribed observers whenever the state changes.