Tests that match your project's style
Testbench reads your existing tests first. Then it writes new ones that look like yours — same imports, same patterns, same conventions.
100%
Convention match
Reads before writing
3x
Self-healing retries
Fix and rerun automatically
8+
Test frameworks
Vitest, Jest, Playwright, pytest...
150
Line limit
Auto-splits large test files
AI-generated tests look nothing like yours
Wrong import style
AI writes `import { render } from '@testing-library/react'` when your project uses `import { customRender } from '../test-utils'`. Every generated test needs manual cleanup.
Generic patterns
Without reading your existing tests, AI defaults to basic patterns — missing your custom matchers, setup functions, mock strategies, and naming conventions.
No coverage awareness
AI generates tests for easy functions while high-impact, heavily-called functions with zero coverage are ignored. No prioritization by actual risk.
Convention-first test generation
Testbench reads 2-3 existing test files before generating anything. It extracts your import style, mock patterns, assertion conventions, file structure, and naming style. Then it generates tests that are indistinguishable from hand-written ones — same patterns, same imports, same style. Coverage analysis uses the code graph to prioritize high-impact untested functions by caller count.
$/testbench:generate src/lib/auth.ts$→ Reading conventions from 3 existing test files...$ Import style: vitest + @testing-library/react$ Mock pattern: vi.mock with factory$ Naming: describe/it with behavior descriptions$ Setup: beforeEach with custom renderWithProviders$→ Generated 8 tests:$ 4 happy path | 2 edge cases | 2 error cases$ Style: matches project conventions ✓$ All 8 passing ✓How it works
Read existing conventions
Testbench scans your test files for import patterns, mock strategies, assertion styles, naming conventions, and setup patterns. This happens automatically before any generation.
Generate matching tests
Tests are generated in categories: happy path → edge cases → error cases → type contracts. Each test follows your project's exact conventions.
Run and self-heal
Generated tests are run immediately. If any fail, Testbench reads the error, fixes the test, and retries — up to 3 attempts before reporting failure.
Prioritize by impact
Coverage analysis integrates with the code graph to identify high-impact untested functions — sorted by caller count, not random selection.