---

name: mii-testdata-contribution description: Guide for contributing test data to the MII (Medizininformatik-Initiative) testdata repository. Use when adding new module test data, understanding testdata repository patterns, creating transaction bundles, or adapting existing module examples for the testdata repo. Triggers on requests like "add testdata for module X", "create test bundle", "contribute to mii-testdata", or "adapt examples for testdata repo".

MII Testdata Contribution

Guide for contributing FHIR test data to the centralized MII testdata repository.

Repository Overview

Repository: https://github.com/medizininformatik-initiative/mii-testdata Structure: kds-testdata/input/fsh/

Directory Structure

Copykds-testdata/input/fsh/
├── Bundle.fsh                    # Master bundle definitions + AddBundleEntry RuleSet
├── aliases.fsh                   # Shared aliases
├── test-data-label.fsh           # TestDataLabel RuleSet
├── modul-{module-name}/          # Module-specific test data
│   ├── {Module}Aliases.fsh       # Module-specific aliases
│   └── {ResourceType}.fsh        # Instance definitions

Naming Convention

Copymii-exa-test-data-{module}-{resource-type}-{number}[-variant]

Examples:

• mii-exa-test-data-patient-1
• mii-exa-test-data-onko-diagnose-1
• mii-exa-test-data-molgen-variante-1

Required RuleSets

TestDataLabel

All instances must include the HTEST security label:

Copy* insert TestDataLabel

AddBundleEntry

For adding resources to transaction bundles:

Copy* insert AddBundleEntry(mii-exa-test-data-{resource}-1, {ResourceType})

Transaction Bundle Pattern

CopyInstance: mii-exa-test-data-bundle-{module}-{number}
InstanceOf: Bundle
Usage: #example
Description: "Bundle: {description}"
* insert TestDataLabel
* type = #transaction
* timestamp = "2025-01-03T10:00:00+01:00"

// Infrastructure resources first
* insert AddBundleEntry(mii-exa-test-data-patient-1, Patient)
* insert AddBundleEntry(mii-exa-test-data-organization-1, Organization)

// Then domain-specific resources
* insert AddBundleEntry(mii-exa-test-data-{module}-{resource}-1, {ResourceType})

Workflow: Adding Module Test Data

Phase 1: Build Coverage Index

Before creating test data, build an index of what needs coverage.

1.1 Extract MS Elements from Profiles

For each profile in the source module, extract Must-Support elements from the differential:

Copy# From StructureDefinition JSON (after sushi build in source module)
for sd in fsh-generated/resources/StructureDefinition-mii-pr-*.json; do
  echo "=== $(basename $sd .json) ==="
  jq -r '.differential.element[] | select(.mustSupport == true) | .path' "$sd"
done

Note: The differential only shows MS elements defined in this profile. Parent profiles (MII KDS base, German base profiles, FHIR core) may have additional MS elements, bindings, and cardinality constraints. These inherited constraints will surface when running SUSHI and the validator.

1.2 Extract SearchParameters

Copy# List all SearchParameters and their target paths
for sp in fsh-generated/resources/SearchParameter-*.json; do
  jq -r '[.name, .expression] | @tsv' "$sp"
done

1.3 Create Coverage Tracking Table

Create a temporary tracking table (markdown or spreadsheet):

Copy| Profile | MS Element | SearchParam | Instance | Status |
|---------|------------|-------------|----------|--------|
| MII_PR_Onko_Diagnose | code.coding[icd10-gm] | diagnosis-code | -1 | pending |
| MII_PR_Onko_Diagnose | subject | - | -1 | pending |
| MII_PR_Onko_TNM | valueCodeableConcept | tnm-t | -1 | pending |

Phase 2: Create Test Data

1. Create branch: git checkout -b feature/add-{module}-testdata
2. Add dependency to sushi-config.yaml:

   Copydependencies:
     de.medizininformatikinitiative.kerndatensatz.{module}: {version}
   

3. Create module directory: mkdir -p kds-testdata/input/fsh/modul-{module}
4. Create aliases file with module-specific CodeSystems/ValueSets
5. Create instance files - populate MS elements, update tracking table
6. Create transaction bundle that includes all instances

Phase 3: Verify and Submit

1. Run SUSHI: cd kds-testdata && sushi .
2. Review coverage table - ensure all MS elements and SearchParams covered
3. Submit PR - CI/CD pipeline runs FHIR Validator

Adapting Existing Module Examples

When the source module already has examples (mii-exa-* instances):

1. Analyze existing examples: Check profile coverage against MS index
2. Adapt naming: mii-exa-{module}-{name} → mii-exa-test-data-{module}-{name}-1
3. Add TestDataLabel: Insert * insert TestDataLabel
4. Update references: Point to testdata instances
5. Fill gaps: Create new instances for uncovered MS elements

Coverage Requirements

SearchParameter Type Requirements

Common Issues

Alias Conflicts

Check aliases.fsh before adding new aliases to avoid redefinition errors.

Reference Resolution

All referenced resources must exist in the bundle. Use consistent instance IDs.

Invariant Satisfaction

Some profiles have invariants requiring specific data patterns. Create multiple instances if needed to satisfy conflicting invariant paths.

Local Validation

Run SUSHI locally before submitting PR:

Copycd kds-testdata
sushi .

FHIR Validator runs automatically in CI/CD pipeline after PR submission.