Functional Testing Services

Functional testing is business imperative for all projects. The cost of remediating software defects in the production environment increases the overall software development costs, and this means that defect removal has to be prioritized. Qualitree helps organizations increase their delivery confidence by validating and verifying business needs along with testing the software.
Qualitree has a rich experience in doing Black box testing for applications across domains and of varied complexities. Our expertise lies in providing end-to-end testing solution with full client satisfaction, manageable cost and with high quality.
Some of the significant areas of our expertise are enlisted below:

Black Box Testing

Qualitree has a rich experience in doing Black box testing for applications across domains and of varied complexities. Our expertise lies in providing end-to-end testing solution with full client satisfaction, manageable cost and with high quality.

Salient Features of the Team

  • Test planning is being done by Project Management certified managers.
  • Test engineers are highly experienced with software testing certification (ISTQB).
  • Domain experts give additional edge when it comes to precise delivery.

Test Approach / Methodology

We use a judicious mix of automated tools and manual processes to perform functional testing. The experience and judgment of our skilled testers goes a long way in ensuring the quality of the final deliverables. Qualitree’s testing methodology is not just another end-of-road clean-up activity; however, it is a full life-cycle process. Testing starts with the business analysis and requirements gathering, and follows through right till the delivery of the test reports and metrics to the user. The testing methodology is comprised of well-defined processes that are managed in several ways to guide customers through the application / product testing. The methodology helps clients with test strategy, test planning, and test execution, monitoring and reporting.
A pictorial representation of the methodology is represented as follows:


White Box Testing

Qualitree provides white box testing services to its global clients to optimize their software applications and products using industry's best practices.
White box or code coverage analysis testing is a structural testing technique which improves code quality, preventing untested code from reaching end users. White-box testing not only verifies that the basic unit of code (class/ function/ procedure) behaves properly when appropriate input is given but also validates that unexpected inputs do not cause application crashes. White box testing helps to measure risk in conjunction with code criticality.
The white box testing techniques help in designing the test cases that:

  • Exercise independent paths within a module or unit
  • Exercise logical decisions on both their true and false side
  • Execute loops at their boundaries and within their operational bounds
  • Exercise internal data structures to ensure their validity

White Box Testing Techniques:
With over a decade of expertise in software testing, Qualitree recommends the following techniques as a part of the white box testing methodology.

Loop Testing

Loop testing exclusively focuses on the validity of the loop constructs. There are four classes of loops that are subject to testing as part of the white box testing methodology:

  • Simple Loop
  • Nested Loop
  • Concatenated Loop
  • Unstructured Loop

Branch Testing

Branch testing technique is a synonym of conditional testing or decision testing. It ensures that each possible outcome from the condition is tested at least once.

Data Flow Testing

It is a white box techniques in which it is validated how the data moves within the program code.

Control Flow Testing

Control flow testing is one of the most vital white-box testing techniques and hence gains the most weight age in our complete methodology. It is a structural testing strategy that uses the programs control flow as a model control flow favoring more but simpler paths over complicated but fewer paths. The adequacy of the test cases is measured and reported with a metric called “coverage”. It is actually a measure of the completeness of the set of test cases. Various coverage methods that form the part of the entire white box testing methodology are:

  • Statement Coverage
  • Branch Coverage
  • Condition Coverage

Basis Path Testing

The basis path white box testing technique helps in producing a logical complexity measure of procedural design and use this measure as an approach for outlining a basic set of execution path (basic set is the set of all the execution of a procedure). It will ensure that each basic test will execute every statement at least once and ensures that each independent path through code is taken in a predetermined order. The following basis path techniques are considered in the white box testing methodology:

  • Flow Graph Notation
  • Cyclomatic Complexity
  • Deriving Test Cases
  • Graph Matrices

Gray Box Testing

The Graybox Testing Methodology is a software testing method used to test software applications. The methodology is platform and language independent. Qualitree has handled Gray box testing for applications across domains and of varied complexities. Our expertise lies in providing end-to-end testing solution with full client satisfaction, manageable cost and with high quality.
The following test strategy helps in enhancing the customer confidence:

Requirement Gathering

  • Business requirement specification
  • Functional design document
  • Use cases
  • Wireframes

Functional Decomposition

  • Decompose the intended functions into sub-functions
  • Verify all the requirements have been covered

Risk based testing analysis

  • Risk Identification
  • Risk Strategy
  • Risk Assessment

Develop test plans & procedures

  • Test plan development
  • Test case development
  • Test execution
  • Test report


  • Project Monitoring Control (PMC) - Effort Variance
  • Project Monitoring Control (PMC) - Schedule Variance
  • Risk Management (RM) – Identified Risks
  • Risk Management (RM) – Active Risks
  • Quality Control (QC) – Defect Severity Distribution
  • Quality Control (QC) – Defect Removal Effectiveness
  • Quality Control (QC) – Review Effectiveness
  • Quality Control (QC) – Defect Density
  • Quality Control (QC) – Code Coverage

Our Centers of Excellence have helped multiple enterprises to implement an organized approach in automation testing solutions. We have leveraged our internal framework with the right mix of automation tools and our home-grown methodologies. This has resulted in a huge cutback in the testing cycle time between releases and more than 30% reduction in the amount of effort spent in testing. Our robust infrastructure and disaster-recovery plan enable us to provide continuous testing services (24X7) and encapsulate daily backups onto another center which is located 2400 kms away. Our infrastructure has multiple redundant servers which gives us 99.9% uptime which ensures the services are not disrupted at any time.
Our dedicated testing labs have well equipped servers geared to simulate various client environments at our premises, and we utilize Web-enabled defect management tools which reflect transparency on the testing cycle. This also allows multiple teams working in different geographies to track the defects in real time.