Function testImports

test/cases/resources/source.js:40–54

()

    return new Z(a.getA() + b.getA());
  },
  testImports () {
    let y = new Y(3);
    const sum1 = Y.add(y, 4).getA();
    if (sum1 != 7) {
      return { tag: 'err', value: `expected 7; got ${sum1}` };
    }

    y.setA(5);
    const sum2 = Y.add(y, 4).getA();
    if (sum2 != 9) {
      return { tag: 'err', value: `expected 9; got ${sum2}` };
    }

    return { tag: 'ok' };
  }
};