How to write integration tests for error processors in packages/core/src/processors/.
$npx -y skills add mastra-ai/mastra --skill testing-core-processorsInstalls into the current project.
Run `npx skills use "https://github.com/mastra-ai/mastra" --skill "mastra-ai/mastra/testing-core-processors"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/mastra-ai/mastra" that are relevant to the current task. Run `npx skills add "https://github.com/mastra-ai/mastra"` and select the relevant skills, then follow their instructions.