What is the difference between 2-value, 3-value, and Robust BVA?

2-Value BVA (ISTQB Foundation) tests the exact boundary and the immediate invalid value outside the boundary (2 points per boundary). 3-Value BVA tests just-below, on-boundary, and just-above (Min-1, Min, Min+1 and Max-1, Max, Max+1). Robust BVA includes extreme lower/upper bounds, and Combinatorial BVA tests interactions across multiple input variables.

How does BVA handle strings, dates, and file sizes?

For strings, BVA calculates exact boundary character lengths and generates real mock string fixtures. For dates, it accounts for exact leap-day (Feb 29), month-end transitions, and time offsets. For file sizes, it computes exact binary byte boundaries (e.g., 5 MB - 1 byte, 5 MB, 5 MB + 1 byte).

Can I export these boundary test cases directly into test frameworks?

Yes! The tool automatically synthesizes parameterized unit and E2E test suites in TypeScript (Vitest/Jest), Python (Pytest with @pytest.mark.parametrize), Java (JUnit 5 with @ParameterizedTest), Playwright E2E UI assertions, as well as CSV, JSON, and Markdown tables.

Boundary Value Analysis (BVA)

Generate ISTQB 2-Value, 3-Value, and Robust 7/9-Point Boundary Value Analysis (BVA) test suites. Features multi-variable matrices, visual partition line, integer/decimal/date/string/file sizing, and auto unit test code generation.

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How to Use Boundary Value Analysis (BVA)

Select a variable data type (Integer, Decimal/Currency, String Length, Date Range, or File Size) and customize your boundary limits.
Choose a testing methodology: 2-Value ISTQB Basic, 3-Value Standard/Robust, 9-Point Extreme Outliers, or Equivalence Partitioning.
Add multiple variables to automatically compute combinatorial test matrices using Single Fault Assumption.
Inspect the interactive visual number-line partition diagram and real-time generated test values.
Export ready-to-run automation code in Vitest, Python Pytest, Java JUnit 5, Playwright, or download formatted CSV/JSON/Markdown test suites.

Why Boundary Value Analysis Is Critical in Software QA

Statistical research across software defect databases shows that a disproportionate majority of production bugs occur at boundary conditions and inequality operators ('<' vs '<=', off-by-one errors). BVA provides rigorous mathematical rigor to guarantee that edge conditions, transition thresholds, and extreme inputs are validated before production release.

Frequently Asked Questions

What is the difference between 2-value, 3-value, and Robust BVA?: 2-Value BVA (ISTQB Foundation) tests the exact boundary and the immediate invalid value outside the boundary (2 points per boundary). 3-Value BVA tests just-below, on-boundary, and just-above (Min-1, Min, Min+1 and Max-1, Max, Max+1). Robust BVA includes extreme lower/upper bounds, and Combinatorial BVA tests interactions across multiple input variables.
How does BVA handle strings, dates, and file sizes?: For strings, BVA calculates exact boundary character lengths and generates real mock string fixtures. For dates, it accounts for exact leap-day (Feb 29), month-end transitions, and time offsets. For file sizes, it computes exact binary byte boundaries (e.g., 5 MB - 1 byte, 5 MB, 5 MB + 1 byte).
Can I export these boundary test cases directly into test frameworks?: Yes! The tool automatically synthesizes parameterized unit and E2E test suites in TypeScript (Vitest/Jest), Python (Pytest with @pytest.mark.parametrize), Java (JUnit 5 with @ParameterizedTest), Playwright E2E UI assertions, as well as CSV, JSON, and Markdown tables.