Testing Core Processors
Use when writing or debugging integration tests for error processors in...
Install
npx skills add mastra-ai/mastra --skill testing-core-processors -g -a claude-code -y- Repository
- mastra-ai/mastra29.3k
- Category
- Testing
- Updated
- 3d ago
- License
- See repository
- Context cost
- Lightabout 982 tokens
- Runs scripts
- No, instructions only
What it does
Use when writing or debugging integration tests for error processors in packages/core/src/processors/. Covers the MockLanguageModelV2 pattern for simulating API errors and verifying retry behavior, plus the build prerequisites for focused vitest runs.
Testing Core Error Processors
How to write integration tests for error processors in packages/core/src/processors/.
Prerequisites
- Build core before running tests:
pnpm build:core(from repo root) - If focused vitest runs fail to resolve
@internal/test-utils/setup, the build step was skipped
Mock Model Pattern
Use MockLanguageModelV2 from @internal/ai-sdk-v5/test to simulate API errors and verify retry behavior.
import { APICallError } from '@internal/ai-sdk-v5';
import { convertArrayToReadableStream, MockLanguageModelV2 } from '@internal/ai-sdk-v5/test';
// Track calls and captured prompts
let callCount = 0;
const receivedPrompts: any[] = [];
