Test Stub Conversion

The Test Stub Conversion was a critical modernization effort completed on March 23, 2026. Its goal was to decouple the Model Context Protocol (MCP) server tests from the heavyweight WikiEngine and TestEngine, enabling faster, more isolated, and more reliable testing.

The Problem: "Heavyweight" Tests

Prior to this effort, testing MCP tools required a full TestEngine instance. This meant:

• Starting up a simulated file system and indexing service for every test.
• Slow execution times (often several seconds per test).
• Fragile tests that could fail due to unrelated engine state.
• Circular dependencies between wikantik-main and the MCP modules.

The Solution: Interface Extraction & Stubs

The conversion was made possible by ADR-001, which extracted core manager interfaces (like PageManager, ReferenceManager, and GroupManager) from wikantik-main into the lightweight wikantik-api module.

Core Components

• StubPageManager: A lightweight, in-memory implementation of PageManager that allows tests to define a virtual set of pages without any disk I/O.
• StubReferenceManager: Simulates the wiki's link-tracking and backlink logic in memory.
• test-jar Configuration: The wikantik-api and wikantik-main modules were configured to produce test-jar artifacts, making these stubs available for use in downstream modules like wikantik-admin-mcp and wikantik-knowledge.

Impact

On March 23, 2026, the following was achieved:

• 11 MCP tool tests were converted from TestEngine to StubPageManager.
• 7 Medium-complexity MCP tests were converted to use StubReferenceManager.
• 13 MCP tool constructors were decoupled from WikiEngine, moving to explicit constructor injection of manager interfaces.
• Improved CI speed: By removing the need for a full engine bootstrap, the MCP test suite execution time was reduced by approximately 80%.

See Also

• Constructor Injection — The architectural pattern that enabled stubbing.
• Wikantik Development — The broader timeline of platform modernization.
• ADR-001: Extract Manager Interfaces to API — The design decision that started the decoupling effort.