test-deduplicator
Finds and removes redundant tests — tests that cover the same code, kill the same mutants, or assert the same behavior — to shrink suite runtime without losing coverage. Use when the test suite is slow, when tests have accumulated over years of copy-paste, or when CI costs are too high.
Install with Tessl CLI
npx tessl i github:santosomar/general-secure-coding-agent-skills --skill test-deduplicator97
Quality
96%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a well-crafted skill description that excels across all dimensions. It provides specific concrete actions, uses natural developer terminology, includes an explicit 'Use when' clause with multiple trigger scenarios, and carves out a distinct niche in test suite optimization that won't conflict with general testing or CI skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'Finds and removes redundant tests', identifies three specific types of redundancy ('cover the same code, kill the same mutants, or assert the same behavior'), and states the goal 'shrink suite runtime without losing coverage'. | 3 / 3 |
Completeness | Clearly answers both what ('Finds and removes redundant tests...to shrink suite runtime without losing coverage') AND when with explicit 'Use when' clause covering three trigger scenarios: slow test suite, accumulated copy-paste tests, and high CI costs. | 3 / 3 |
Trigger Term Quality | Includes natural keywords users would say: 'redundant tests', 'test suite is slow', 'copy-paste', 'CI costs', 'coverage', 'runtime'. These are terms developers naturally use when discussing test optimization problems. | 3 / 3 |
Distinctiveness Conflict Risk | Clear niche focused specifically on test redundancy removal with distinct triggers like 'mutants', 'redundant tests', 'CI costs'. Unlikely to conflict with general testing skills or code quality tools due to its specific focus on test deduplication. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
92%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a high-quality skill that provides concrete, executable guidance for test deduplication with clear workflows and validation steps. The content efficiently covers multiple approaches (subsumption, greedy cover, mutation verification) without over-explaining concepts Claude already knows. Minor improvement could come from splitting detailed examples into referenced files for better progressive disclosure.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is lean and efficient, assuming Claude's competence with testing concepts. No unnecessary explanations of what tests are or how coverage works—jumps straight into actionable classification and algorithms. | 3 / 3 |
Actionability | Provides fully executable Python code for coverage collection, subsumption detection, and greedy set cover. The bash commands and Python snippets are copy-paste ready with clear variable names and logic. | 3 / 3 |
Workflow Clarity | Clear 4-step sequence (build coverage → find subsumption → greedy cover → verify) with explicit validation checkpoint in Step 4. The 'Do not' section provides guardrails, and the output format ensures verification of coverage preservation. | 3 / 3 |
Progressive Disclosure | Content is well-organized with clear sections and tables, but it's a fairly long single file. The reference to mutation-test-suite-optimizer skill is good, but some content (like the detailed parametrization examples) could potentially be split out for better navigation. | 2 / 3 |
Total | 11 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Reviewed
Table of Contents
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