Testing

Adapters need both contract tests and full bridge tests.

Contract Coverage

At the adapter package level, test:

• manifest validity
• tool list shape
• validation errors for malformed inputs
• stable success payload shape
• stable error payload shape

Integration Coverage

At the bridge level, test:

• tools/list through local-mcp
• tools/call through local-mcp
• native-first fallback behavior when native WebMCP is absent
• adapter startup and teardown behavior when relevant

Read Path Expectations

For paginated read tools, verify:

• first page without cursor
• follow-up page with cursor
• items, hasMore, and nextCursor
• source and reason when DOM fallback happens

Real Site Safety

For real authenticated sites:

• prefer read-only smoke coverage in CI or local verification
• keep destructive writes behind explicit user intent
• do not hard-code secrets in tests