Add tests

tests/DCC/CoreDataType.test.ts

-/**
- * @jest-environment ./tests/XMLEnvironment.ts
- * @xml ./tests/resources/example.xml
- */
-
-import * as fc from "fast-check";
-import { indexOf, select, toTextArr, toTextContentArr } from "../util";
-import { CoreDataType, DCCDocument, DCCXMLElement } from "../../src";
-import { string_ISO639_1 } from "../Arbitraries";
-
-const base = "/dcc:digitalCalibrationCertificate/dcc:administrativeData/dcc:coreData";
-const xpath = {
-  countryCodeISO3166_1: `string(${base}/dcc:countryCodeISO3166_1)`,
-  usedLangCodeISO639_1: `${base}/dcc:usedLangCodeISO639_1`,
-};
-
-describe("CoreDataType", () => {
-  let dcc: DCCDocument, coreData: CoreDataType, dom;
-
-  beforeEach(async () => {
-    ({ dcc, dom } = await xmlEnv.recreateEnv());
-    coreData = dcc.digitalCalibrationCertificate.administrativeData.coreData;
-  });
-
-  test("should get correct countryCodeISO3166_1 from XML", () => {
-    expect(coreData.countryCodeISO3166_1._text).toBe(select(xpath.countryCodeISO3166_1, dom));
-  });
-
-  test("should get correct usedLangCodeISO639_1 from XML", () => {
-    // get expected list from example xml
-    const expected = <Element[]>select(xpath.usedLangCodeISO639_1, dom);
-    expect(toTextArr(coreData.usedLangCodeISO639_1)).toEqual(toTextContentArr(expected));
-  });
-
-  test("should set usedLangCodeISO639_1 correctly", () => {
-    fc.assert(
-      fc.property(string_ISO639_1(), (str) => {
-        // add new element to array
-        coreData.usedLangCodeISO639_1.push(new DCCXMLElement({ _text: str }));
-
-        // get actual list from xml
-        const actual = <Element[]>select(xpath.usedLangCodeISO639_1, dcc);
-
-        expect(toTextArr(coreData.usedLangCodeISO639_1)).toContain(str);
-        expect(toTextContentArr(actual)).toContain(str);
-      }),
-    );
-  });
-
-  test("should delete usedLangCodeISO639_1 correctly", () => {
-    const selection = toTextContentArr(<Element[]>select(xpath.usedLangCodeISO639_1, dom));
-    fc.assert(
-      fc.property(fc.constantFrom(...selection), (str) => {
-        // get index and remove element from array
-        const index = indexOf(coreData.usedLangCodeISO639_1, str);
-        coreData.usedLangCodeISO639_1.splice(index, 1);
-
-        // get actual list from xml
-        const actual = <Element[]>select(xpath.usedLangCodeISO639_1, dcc);
-
-        expect(toTextArr(coreData.usedLangCodeISO639_1)).not.toContain(str);
-        expect(toTextContentArr(actual)).not.toContain(str);
-      }),
-    );
-  });
-});