Pm 6 testing

Software Project Management

Are we delivering right things

Why Testing is required

• Delivered results should match with expected
results

• Testing strategy must include
– Test Planning
– Test Case Design
– Test Execution
– Resultant Data Collection

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Verification & Validation
• Verification – It is set of tasks that ensures that
software correctly implements specific functions
– “Are we building the product right”

• Validation – It is set of tasks that ensures that
the S/w that has been built is traceable to
customer requirements
– “Are we building the right product”


V & V activities
• Technical Reviews
• Quality & Configuration audits
• Performance monitoring
• Documentation Reviews
• Database Reviews
• Algorithm Analysis
• Usability Testing
• Acceptance Testing
• Installation Testing etc…


White Box Testing

• Developer is suppose to carry out this
testing in which

– All independent paths have been exercised at
least once
– Exercise all logical decisions
– Executes all loops and boundaries
– Exercise Internal Data structures
– Condition Testing, Data Flow Testing, Loop
Testing


Black Box Testing

• It focuses more on functional requirements of
the software. Generally carried out by testers or
Business Analysts
– Requires domain knowledge
– Data volume, System users
– Various combination of data and its effect on the
system


V process model

Feasibility
Study Review

User User
Requirements Acceptance

System System
Design Testing

Program Program
Design Testing

Coding

Testing for Conventional S/w

• Unit Testing – It applies to the smallest
unit of S/w design like component or a
module.

– Module interfaces are tested
– Information flow is tested
– Data structures are tested
– All control structures are exercised
– Boundary conditions are tested
– Error handling paths are tested



• Integration Testing – Putting and
executing modules together

– Data can be lost across an interface
– One component has adverse effect on another
– Combining sub functions
– Variables and Memory management
– Database and file design
(Find out what is Top-down integration testing
and Bottom-up integration testing)



• Regression Testing - Whenever there are any
changes software needs to be tested again and
again. If the changes are frequent then the
efforts spent are much more.
• Generally automation is done in these cases.



• Smoke Testing –It is an Integration testing
approach, designed as a pacing mechanism for
time critical projects.
• Focus is more on testing critical functionality and
not whole system.


Alpha & Beta Testing
• It is very difficult for S/w developer to foresee
how the end customer will really use a program.
• Alpha Test – Conducted by end-user at
developer’s site. Developer is present during the
testing. These tests are conducted in controlled
environment. Developer records all the problems
encountered


Alpha & Best Testing

• Beta Testing – It is conducted at one or more
users site. Developer is not present during
testing. The environment is not controlled by the
developer. It is like pre-live run. Customer
records all the problems

what is customer acceptance testing ?


System Testing

• Recovery Testing – Recovery from faults and
resume processing with little or no down time
• Security Testing – Protection from hackers, Un-
happy Employees
• Stress Testing – Increasing load on the system
by Users, Data, Executing complex data
calculations


System Testing

• Performance Testing - To confirm whether the
performance requirements are met
• Deployment Testing – Execution of software on
variety of platforms and under more than one
OS. It is also called as Configuration Testing.


Testing Web Applications

• Why it is complex ?

• Dynamic UI
• Navigation
• Performance
• Compatibility
• Interoperability (Interface with other
applications)
• Security


Testing Web Applications

• Hardware – CPU, Memory, Storage
• OS – Linux, Mac, Windows, Mobile based OS
• Browser – Firefox, Safari, IE, Chrome, Opera
• UI Components – Active X, Java applets
• Plug-ins – Quick Time, Real Player
• Connectivity – Cable, WiFi, Modem


Testing Interface

• Links
• Forms
• Client-side scripting
• Dynamic HTML
• Pop-up windows
• Streaming Contents
• Cookies


Usability Tests
• Layout (easily finding required func.)
• Readability
• Interactivity (menus, buttons etc)
• Aesthetics (Color, font, etc)
• Display Characteristics (Use of screen size,
Resolution etc..)
• Personalization
• Accessibility (for disable persons)


Security Testing
• Firewall
• Authentication (Validation of clients and
servers)
• Encryption
• Authorization

Find out what is Vulnerability Testing?

What is Spoofing ?

Difference Between Load & Stress Testing?

Parallel Testing - Why

• To ensure that the processing of new application
(new version) is consistent with respect to the
processing of previous application version.

• Demonstrate consistency and inconsistency
between 2 versions of the application.


Parallel Testing - How

• Same input data should be run through 2
versions of same application system

• Parallel testing can be done with whole
system or part of system (module)

• Verification is done through acceptance
Testing & Stress Testing


Parallel Testing - When

• When there is uncertainty regarding correctness
of processing of new application where the new
and old version are similar.
• Application of new patches
• Change in Technology
• Major application changes
• Change in OS


Pm 6 testing

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