run-tests

Run Tests -- Smart Change-Aware Test Selection

Run tests based on what changed. Auto-detects affected services from git diff and runs only their test projects instead of the full suite.

Configuration

Read cloudstack.json from the project root at the start of execution. Extract relevant fields:

• SOLUTION = backend.solutionPath (default: find *.sln)
• SERVICES = backend.services[] (default: discover from project structure)

If cloudstack.json does not exist, auto-detect by scanning the project structure.

1. Parse Arguments

Determine from user input:

• MODE: unit (default), integration, or all
• SERVICE: optional service name or slug
• Explicit --all flag: runs both unit and integration for all projects

User says	MODE	SERVICE
/run-tests	unit	(auto-detect)
/run-tests {service}	unit	{service}
/run-tests --integration	integration	(auto-detect)
/run-tests --integration {service}	integration	{service}
/run-tests --all	all	(auto-detect)
/run-tests --all {service}	all	{service}

2. Resolve Test Projects

Auto-detection approach

Use git diff to identify changed files and map them to test projects:

# Get changed files relative to main
CHANGED_FILES=$(git diff origin/main...HEAD --name-only 2>/dev/null; git diff --name-only 2>/dev/null; git diff --name-only --cached 2>/dev/null)

Map changed source paths to their corresponding test projects:

1. For each changed file under a service's source path, find matching test projects by convention (e.g., {ServicePath}.Tests.Unit, {ServicePath}.Tests.Integration, {ProjectPrefix}.Tests.*).
2. If shared/foundational code changed (shared domain, shared infrastructure), fall back to running the full test suite.
3. If only non-source files changed (docs, config, CI), report "No tests affected" and offer to run the full suite.

Explicit service mode

When a service name is provided, look up its path from cloudstack.json and find test projects matching that service's project prefix.