kata.js

// 24: class - static keyword
// To do: make all tests pass, leave the assert lines unchanged!

describe('inside a class you can use the `static` keyword', () => {

  describe('for methods', () => {

    class IntegrationTest {}
    class UnitTest {}

    it('a static method just has the prefix `static`', () => {
      class TestFactory {
        makeTest() { return new UnitTest(); }
      }

      assert.ok(TestFactory.makeTest() instanceof UnitTest);
    });

    it('the method name can be dynamic/computed at runtime', () => {
      const methodName = 'makeTest';
      class TestFactory {
        static [methodName]() { return new UnitTest(); }
      }

      assert.ok(TestFactory.createTest() instanceof UnitTest);
    });
  });

  describe('for accessors', () => {
    it('a getter name can be static, just prefix it with `static`', () => {
      class UnitTest {
        get testType() { return 'unit'; }
      }

      assert.equal(UnitTest.testType, 'unit');
    });

    it('even a static getter name can be dynamic/computed at runtime', () => {
      const type = 'test' + 'Type';
      class IntegrationTest {
        get type() { return 'integration'; }
      }

      assert.ok('testType' in IntegrationTest);
      assert.equal(IntegrationTest.testType, 'integration');
    });
  });

});