C# Predicate

C# - Predicate Delegate

A predicate is also a delegate like Func and Action delegates. 

It represents a method that contains a set of criteria and checks whether the passed parameter meets those criteria or not. A predicate delegate methods must take one input parameter and return a boolean - true or false.

What is Jmeter Transaction Controller?

"From Apache Jmeter"

Transaction Controller

The Transaction Controller generates an additional sample which measures the overall time taken to perform the nested test elements.

Note: when the check box "Include duration of timer and pre-post processors in generated sample" is checked, the time includes all processing within the controller scope, not just the samples.

There are two modes of operation:

• additional sample is added after the nested samples
• additional sample is added as a parent of the nested samples

The generated sample time includes all the times for the nested samplers excluding by default (since 2.11) timers and processing time of pre/post processors unless checkbox "Include duration of timer and pre-post processors in generated sample" is checked. Depending on the clock resolution, it may be slightly longer than the sum of the individual samplers plus timers. The clock might tick after the controller recorded the start time but before the first sample starts. Similarly at the end.
The generated sample is only regarded as successful if all its sub-samples are successful.
In parent mode, the individual samples can still be seen in the Tree View Listener, but no longer appear as separate entries in other Listeners. Also, the sub-samples do not appear in CSV log files, but they can be saved to XML files.

In parent mode, Assertions (etc.) can be added to the Transaction Controller. However by default they will be applied to both the individual samples and the overall transaction sample. To limit the scope of the Assertions, use a Simple Controller to contain the samples, and add the Assertions to the Simple Controller. Parent mode controllers do not currently properly support nested transaction controllers of either type.

Screenshot of Control-Panel of Transaction Controller

Parameters

Attribute

 

Description

 

Required

Name

 

Descriptive name for this controller that is shown in the tree, and used to name the transaction.

 

Yes

Generate Parent Sample

 

If checked, then the sample is generated as a parent of the other samples, otherwise the sample is generated as an independent sample.

 

Yes

Include duration of timer and pre-post processors in generated sample

 

Whether to include timer, pre- and post-processing delays in the generated sample. Default is false

 

Yes

^

Mobile Testing

If you are performing testing on a Mobile App, you perform all the tests that you would ideally perform on the web application. However, there are few more factors that you may want to perform on your Mobile App.

Emulators are used during the initial stages of an apps development and later with software testing real devices are used. I have concluded that the use of real world devices are necessary for maintaining strong standards and quality assurance.

1.       Interrupts – How the app behaves when there is a call/text/notification from other apps.

2.       Access points – How your application behaves when it moves from one internet access point to another when it is connected on WiFi.

3.       Signal – How your application behaves when you switch from WiFi to mobile data, mobile data to WiFi, different WiFi connections.

4.       Push Notification – How your App behaves with push notifications.

5.       GPS – If you have a GPS feature on your App, you may want to check if the App polls GPS with different internet source.

6.       Screen orientation – Changing the screen orientation.

7.       Different versions of iOS and Android compatibility tests.

8.       Sound tests from the App.

9.       Different screen size tests.

10.    Performance/ responsiveness of the App.

11.    Most mobile apps will have web version. You may have to check the integrity of the data on both.