Test if suggested transport medium is defined in the record. (#1741)

src/checks/record/suggested-medium-exists.ts

@@ -0,0 +1,21 @@
+import { Check } from '../../types/checks';
+import { SuggestedTransportMedium } from '../../types/CompanyRecord';
+
+const check: Check = {
+    id: 'suggested-medium-exists',
+    desc: 'The suggested transport medium should be specified in the record.',
+    url: 'https://github.com/datenanfragen/data/issues/1740',
+    severity: 'ERROR',
+    run: (json) => {
+        if (!('suggested-transport-medium' in json)) return;
+        const medium = json['suggested-transport-medium'];
+        if (medium == SuggestedTransportMedium.Letter) return; // this is covered by the schema itself, as records have to have an address.
+        if (!(medium in json))
+            return {
+                message: `Suggested-transport-medium is set to '${medium}', but the ${medium} is not defined in the record.`,
+                json_pointer: '/suggested-transport-medium',
+            };
+    },
+};
+
+export default check;