import type {Mock} from 'bun:test';
import {mock, describe, it, beforeEach, expect} from 'bun:test';
import {Disposable} from '../../src/disposables';

describe(`When using a Disposable`, () => {
  describe(`Given a Disposable`, () => {
    let mockFunction: Mock<any>;
    let disposable: Disposable;

    beforeEach(() => {
      mockFunction = mock(() => {});
      disposable = new Disposable(mockFunction);
    });

    describe(`Given the disposable is disposed`, () => {
      beforeEach(() => {
        disposable.dispose();
      });

      it(`executes the disposble`, () => {
        expect(mockFunction).toHaveBeenCalled();
      });

      it(`marks the disposbale disposed`, () => {
        expect(disposable.isDisposed).toBeTrue();
      });

      describe(`Given the disposable is repeatedly disposed`, () => {
        beforeEach(() => {
          for (let count = 0; count < 10; count++) {
            disposable.dispose();
          }
        });

        it(`disposes the disposable only once`, () => {
          expect(mockFunction).toHaveBeenCalledTimes(1);
        });
      });
    });
  });
});