Add tests

tests/DCC/Test_DCC_Minimal/AdministrativeData.CalibrationLaboratory.test.ts

+/**
+ * @jest-environment ./tests/XMLEnvironment.ts
+ * @xml ./tests/resources/Test_DCC_Minimal.xml
+ */
+
+import { select, toTextArr, toTextContentArr } from "../../util";
+import { CalibrationLaboratoryType, DCCDocument } from "../../../src";
+
+const base = "/dcc:digitalCalibrationCertificate/dcc:administrativeData/dcc:calibrationLaboratory/dcc:contact";
+const xpath = {
+  name: `string(${base}/dcc:name/dcc:content)`,
+  location: {
+    city: `${base}/dcc:location/dcc:city`,
+  },
+};
+
+describe("Test_DCC_Minimal: CalibrationLaboratoryType", () => {
+  let dcc: DCCDocument, calibrationLaboratory: CalibrationLaboratoryType, dom;
+
+  beforeEach(async () => {
+    ({ dcc, dom } = await xmlEnv.recreateEnv());
+    calibrationLaboratory = dcc.digitalCalibrationCertificate.administrativeData.calibrationLaboratory;
+  });
+
+  test("should get correct name from XML", () => {
+    expect(calibrationLaboratory.contact.name.content[0]._text).toBe(select(xpath.name, dom));
+  });
+
+  test("should get correct city from XML", () => {
+    // get expected list from example xml
+    const expected = <Element[]>select(xpath.location.city, dom);
+    expect(toTextArr(calibrationLaboratory.contact.location.city)).toEqual(toTextContentArr(expected));
+  });
+});