Testing & Quality Assurance in Software Development

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Testing Quality Assurance in Software
Development
Effective quality assurance is the backbone of
reliable software. It ensures products meet
standards and function as intended.
In this presentation, we'll explore QA practices
that make the difference between software that
shines and software that fails.
by Ozías Rondón
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What is Software Quality Assurance?
Definition
Purpose
A systematic process that ensures products and
services meet specified requirements and quality
standards.
To identify and fix defects early in development,
preventing costly issues later.
Scope
Covers all aspects of software development, from
requirements to deployment and maintenance.
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The Role of QA in Software Development
Improved ROI
1
Lower maintenance costs
Enhanced User Experience
2
Greater satisfaction and loyalty
Defect Prevention
3
Catching issues before release
Quality Assurance isn't just about finding bugs.
It's about preventing them through systematic
processes throughout development.
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Types of Software Testing
Acceptance Testing
System Testing
Integration Testing
Validating the entire application against
specified requirements.
Determining if the software meets business
requirements and user needs.
Unit Testing
Testing individual components in isolation to
verify they work as expected.
Ensuring multiple components work together
properly when combined.
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Functional vs. Non-Functional Testing
Functional Testing
Non-Functional Testing

• Verifies specific functions work as expected

• Assesses operational aspects

• Tests user interfaces and APIs

• Evaluates system performance under load

• Focuses on features and behaviors

• Tests security vulnerabilities

• Examples regression, smoke testing

• Examines usability and accessibility

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Manual vs. Automated Testing
Aspect
Manual Testing
Automated Testing
Speed
Slower, labor-intensive
Faster, efficient for repetition
Cost
Higher long-term cost
Higher initial investment
Human Insight
Strong for UX issues
Limited creative assessment
Best For
Exploratory testing
Regression and load testing
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Test Planning and Strategy
Define Objectives
Establish clear goals for testing based on
requirements and risks.
Create Test Cases
Develop detailed scenarios covering all critical
paths and edge cases.
Prioritize Efforts
Focus on high-risk, high-impact features first
for maximum efficiency.
Allocate Resources
Assign appropriate time, tools, and personnel to
testing activities.
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Test Execution and Reporting
Execute Tests
Record Results
1
Run planned test cases systematically
Document outcomes with evidence
2
Report to Stakeholders
4
Analyze Findings
3
Evaluate pass/fail patterns
Communicate insights clearly
Effective reporting transforms test data into
actionable intelligence for the development team.
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Defect Management
Identify
1
Discover and document defects with detailed
reproduction steps.
Categorize
2
Classify by severity, priority, and affected
components.
Assign
3
Delegate to appropriate team members for
resolution.
Verify
4
Retest fixed issues to confirm proper resolution.
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Continuous Integration and Testing
Automated Builds
Automated Tests
Instant Feedback
Code changes trigger automatic build processes to
detect integration issues early.
Tests run automatically with each build to
provide immediate feedback.
Developers receive immediate alerts about build
or test failures.
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Test-Driven Development (TDD)
Write Test
Run Test
1
2
Create tests that define expected functionality
before writing code.
Execute the test, which will fail initially.
Write Code
Refactor
Develop minimum code needed to pass the test.
Improve code quality while ensuring tests still
pass.
3
4
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Performance Testing
Load Testing
Stress Testing
Scalability Testing
Evaluates system behavior under expected user
loads to identify bottlenecks.
Pushes systems beyond normal capacity to
determine breaking points.
Assesses how effectively the system scales with
increasing loads.
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Security Testing
Vulnerability Assessment
Penetration Testing
Systematic review identifying security weaknesses
in applications. Scans detect common exploits and
configuration issues.
Ethical hackers attempt to breach systems.
Simulates real-world attacks to find exploitable
vulnerabilities.
Compliance Checks
Verifies software meets industry regulations.
Ensures adherence to standards like GDPR, HIPAA,
or PCI DSS.
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User Acceptance Testing (UAT)
Prepare Test Environment
1
Setup production-like systems
Train End Users
2
Equip users with testing knowledge
Execute Test Cases
3
Users validate real-world scenarios
Collect Implement Feedback
4
Address user concerns before release
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Mobile App Testing
Device Fragmentation
Testing across various screen sizes, resolutions,
and hardware configurations is essential.
OS Version Compatibility
Apps must work across multiple Android and iOS
versions still in use.
Network Conditions
Testing under varying connection states ensures
reliability in real-world scenarios.
Battery Resource Usage
Apps should minimize power consumption and memory
usage for optimal performance.
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Best Practices in QA
Early QA Involvement
Cross-Functional Collaboration
Continuous Improvement
Include QA from the requirements gathering phase
to prevent design defects.
Regularly update skills and refine processes
based on project retrospectives.
Foster partnership between developers and testers
to enhance quality awareness.
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Tools for QA and Testing
Modern QA relies on specialized tools for test
management, automation, and defect tracking to
increase efficiency and coverage.
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Measuring QA Success
Before QA Improvements
After QA Improvements
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The Future of QA
AI-Powered Testing
1
Machine learning algorithms will identify
patterns and predict defects before they occur.
Shift-Left Approach
2
Testing will begin earlier in development cycles,
with developers taking on more testing
responsibility.
DevOps Integration
3
QA practices will seamlessly blend with
development and operations in unified workflows.
Intelligent Test Automation
4
Self-healing test scripts will adapt to UI
changes without manual intervention.
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