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Thursday, November 8, 2012

What is Silk Test Architecture?

Whenever the graphical user interface of any software system or application is tested, a manipulation is done to the windows, menus, buttons and so on via input sources such as key board and mouse clicks etc. 
These windows, menus, buttons and so on are nothing but the GUI objects which are interpreted by the silk test. 
Later, in the test automation process the silk test recognizes these GUI objects based up on two things that uniquely identify them namely:
  1. Object class properties and
  2. Object methods
The operations that are performed on that particular application software by the users are usually in terms of input from keyboard and mouse clicks. 
These events are simulated by the silk test and the results thus obtained are subjected to automatic verification. 
This whole process is carried out by two very distinct components of the silk test mentioned below:
  1. Silk host software and
  2. Silk agent software
Both of these components are installed on different machines: the host machine and the target machine. 
- Host machine is for the silk host software whereas target machine is for the second component of the silk test. 
- The host component plays an important role in the development of the test scripts as well as the test plan.
- Using the components the following operations can be carried out on the test scripts:
  1. Creating
  2. Editing
  3. Deleting
  4. Compiling
  5. Running
  6. Debugging etc.
- The latter component of the silk test i.e., the agent is configured to interact with the graphical user interface of the AUT or application under test. 
- The agent is responsible for monitoring as well as driving the application under test. 
- The commands in test scripts are written in the 4test language. 
- These need to be translated in to specific equivalent GUI commands. 
- This task is also achieved by the silk agent software. 
- One thing that should be taken care of is that the application under test should be installed on the same machine as of the agent and on no machine else. 
- Matching objects to that of the GUI objects are created in the 4test and each one is unique. 
- Silk test completes test automation in a period of 4 steps:
  1. Creation of a test plan
  2. Recording of the test frame
  3. Creation of the test cases
  4. Execution of the test cases and interpretation of the test results.
- The interaction between the GUI of the application and the silk test is necessary since the operations need to be submitted to the application for simulation. 
- During the simulation, the silk test is said to be the simulated user whose work is to drive the application under test. 
- Since the AUT does not recognize the difference between the simulated user and the actual user, it behaves exactly in the same way as it reacts to an actual user. 
- In addition, you can have an agent as a local agent installed on the host machine. 
- Machines other than the host machine on which agent is installed in a network are called target machines. 
- The application under test is driven by the silk test and in turn drives the server like always. 
- Silk test is quite a powerful tool and can be used to drive the GUI of a server directly by running the scripts which will send equivalent SQL scripts to the data base of the server. 
- In such a way the server application is manipulated directly thus supporting the testing involving a server being driven by a client.

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