CTE: Classification Tree Editor

The CTE (Classification Tree Editor) is Razorcat’s graphical test case design tool. It implements the Classification Tree Method to transform requirements and specifications into systematic, error-sensitive test case specifications with minimal redundancy.

How CTE Works

CTE provides a graphical notation where you decompose test inputs into classifications (parameter categories) and classes (specific values). The tree structure makes complex test spaces visible and manageable. Combinatorial rules then generate test cases that cover the relevant input combinations without exhaustive enumeration.

The resulting test specifications export directly to TESSY for automated execution, or to other test tools via standard formats.

Key Capabilities

Feature	Detail
Method	Classification Tree Method (ISO 29119 referenced)
Editor	Graphical tree-based test case design
Export	TESSY integration + standard format export
Platform	Windows 7/8/10/11 (64-bit)
Licensing	Standalone or integrated with TESSY

When to Use CTE

• Systematic test design: Replace ad-hoc test case selection with a structured method
• Safety-critical projects: ISO 26262 and DO-178C assessors expect systematic test case derivation
• Complex input spaces: When the number of input combinations is too large for exhaustive testing
• Requirements traceability: Link test cases back to requirements through the tree structure

Buy CTE in India from GSAS

GSAS provides CTE licensing with INR invoicing as part of the Razorcat testing ecosystem. Available standalone or bundled with TESSY. Contact our functional safety engineers in Bengaluru, Hyderabad, Chennai, Pune, Mumbai, and Delhi NCR for evaluation licenses.