basic of software testing presented by the smartpath information system an iso 9001:2008 certified...
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Basic of Software Testing
Presented by
The Smartpath Information SystemAn ISO 9001:2008 Certified Organization
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What is Testing ?
A Process of evaluating a particular product to determine whether
the product contain any defects.
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Few Testing Examples
Specifications for Pen
1. Ink Colour – Red 2. Body Colour – Blue3. Should be ink Pen
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Few Testing ExamplesTaking Test Ride before buying any vehicle
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Few Testing ExamplesTasting Recipe for its perfect taste before serving
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Software Testing is a process of evaluating a system by manual or automatic means and verify that it satisfies specified requirements or identify differences between
expected and actual results.
What is Software Testing ?
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Why Software Testing ?
To find faults or Defects in Software
To improve Quality of Software
To learn about the reliability of the software
Because failures can be very expensive
To Satisfy Customer in order to stay in Business
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What is Defect\Bug ? Error: a human action that produces an incorrect result Fault: a result of an error in software
also known as a defect or bug Deviation from requirements
Failure: deviation of the software from its expected delivery or service if defect is executed, a fault may cause a failure
Failure is an event; fault is a state of
the software, caused by an error
Failure is an event; fault is a state of
the software, caused by an error
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Error- Fault-FailureA person makes
an error ...
… that creates afault in thesoftware ...
… that can causea failure
in operation
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Most Common Software Bugs
Non User Friendly Incorrect calculation Incorrect data edits & ineffective data edits Incorrect matching and merging of data Data searches that yields incorrect results Incorrect processing of data relationship Incorrect coding / implementation of business rules Inadequate software performance Unreliable results or performance Inadequate support of business needs Incorrect or inadequate interfaces
with other systems Inadequate performance and security controls
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Few Reasons for Software Bugs
Miscommunication or no communicationLess understanding of Customer requirementsSoftware complexityProgramming errorsChanging requirementsTime pressuresEgotistical or overconfident peoplePoorly documented codeNot prioritizing test execution.
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Damages Caused by Software Bugs
Monetary Loss
Death or Injury
Reputation Loss
Business Loss
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What are Testing Myths?
Software testing is unnecessarySoftware test automation can replace test engineers to perform good software testing.Software Testing can be done using Automation tools there is no need of Manual effortsTesting is boringTesters only find bugsMachines will make human testers obsoleteSoftware testing is simple and easy. Anyone can do it. No training is needed.Software Development better domain than Software Testing
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What are Testing Principles?•Principle #1: Complete testing is impossible.
•Principle #2: Software testing is not simple.•Reasons:
•Quality testing requires testers to understand a system/product completely•Quality testing needs adequate test set, and efficient testing methods•A very tight schedule and lack of test tools.
•Principle #3: Testing is risk-based.
•Principle #4: Testing must be planned.
•Principle #5: Testing requires independence.
•Principle #6: Quality software testing depends on:•Good understanding of software products and related domain application•Cost-effective testing methodology, coverage, test methods, and tools.•Good engineers with creativity, and solid software testing experience
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What is Quality ?
To satisfy the customers by ensuring that the products or services we provide meet or exceeds the customer requirement& expectations & it should have some value also.
Software Testing is directly proportional to Software Quality
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Quality Assurance and Quality Control
Quality Assurance: A planned and systematic set of activities Necessary to provide adequate confidence that requirements are Properly established and products or services conform to specified requirements.
Quality Control: The process by which product quality is compared with applicable standards; and the action taken when non-conformance is detected.
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Quality Attributes
Reliability Maintainability UsabilityPortabilityCorrectnessEfficiencyIntegrity or securityTestabilityFlexibilityReusabilityInteroperability
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