Automated Test Case Generation for the Stress Testing of Multimedia Systems

1
Automated Test Case Generation for the Stress
Testing of Multimedia Systems

• By Jian Zhang and S.C. Cheung
• Presentation By Wytt Lusanandana

2
Multimedia Systems

• Multimedia systems is growing rapidly
• Multimedia consist of media objects, such as
  audios, videos, images, and texts.
• Media servers must deliver data in form of
  continuously running streams
• Media clients receives, decode, and resynchronize
  the data streams.

3
Common Temporal Operators
4
Example Faults of Temporal Requirements
5
Test System Architecture

• The test case generator, which generates and
  selects test cases based on the specification of
  the multimedia system
• The test setup, which includes the tester and the
  implementation-under-test The tester executes
  the test cases and monitors the IUT responses
• An oracle, which compares the output of the IUT
  with the expected responses, and provides the
  verdict (pass or fail)

6
Test System Architecture Diagram
7
Reachability Analysis

• Example PInit, Demo, Full, Quit
• Reachability graphs are very useful for analyzing
  the dynamic behavior
• Reachability analysis is critical to stress
  testing

8
Identifying Scenarios of Resource Saturation

• To maximize the peak usage of resources, we
  consider the resource types CPU, memory, network
  bandwidth, and display buffers