import Store from '../../src/modules/store.js';

export default class StoreTest {
  constructor(assert) {
    this.assert = assert;
  }

  test() {
    (() => {
      let called = false
      const store = new Store(() => called = true);

      const event = new Event('addLine');
      store.eventHandler(event);

      this.assert("eventHandler calls the callback after successfull event", called, true);

    })();
    (() => {
      const store = new Store(() => {});
      store.records = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, text: "qwer", action: 'add'},
        {id: 2, action: 'remove'},
      ]

      const event = new Event('unknown');
      store.eventHandler(event);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, text: "qwer", action: 'add'},
        {id: 2, action: 'remove'},
      ];

      this.assert("eventHandler does nothing on an unknown event type", store.records, expected);

    })();
    (() => {
      const store = new Store(() => {});

      const event = new Event('addLine');
      store.eventHandler(event);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
      ];

      this.assert("eventHandler adds the appropiate record when Event 'addLine' is passed", store.records, expected);

    })();
    (() => {
      const store = new Store(() => {});
      store.records = [
        {id: 0, text: "asdf", action: 'add'},
      ]

      const event = new Event('removeLine');
      store.eventHandler(event);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, action: 'remove'},
      ];

      this.assert("eventHandler adds the appropiate record when Event 'removeLine' is passed", store.records, expected);

    })();
    (() => {
      const store = new Store(() => {});
      store.records = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, text: "qwer", action: 'add'},
        {id: 2, action: 'remove'},
      ]

      const event = new Event('undo');
      store.eventHandler(event);

      const expected = [
        {id: 0, text: "asdf", action: 'add'},
        {id: 1, text: "qwer", action: 'add'},
      ];

      this.assert("eventHandler deletes the appropiate record when Event 'undo' is passed", store.records, expected);

    })();
    (() => {
      const store = new Store(() => {});

      store.records = [
        {id: 0, text: "Line 1", action: 'add'},
        {id: 1, text: "Line 2", action: 'add'},
        {id: 2, text: "Line 3", action: 'add'},
      ];
      
      const expected = [
        {id: 0, text: "Line 1"},
        {id: 1, text: "Line 2"},
        {id: 2, text: "Line 3"},
      ];

      this.assert("getState returns an array of strings with 3 add records", store.getState(), expected);
    })();

    (() => {
      const store = new Store(() => {});

      store.records = [
        {id: 0, text: "Line 1", action: 'add'},
        {id: 1, text: "Line 2", action: 'add'},
        {id: 2, text: "Line 3", action: 'add'},
        {id: 3, targetId: 1, action: 'remove'},
      ];
      
      const expected = [
        {id: 0, text: "Line 1"},
        {id: 2, text: "Line 3"},
      ];

      this.assert("getState returns an array of strings with 3 add records and a delete record", store.getState(), expected);
    })();
  }
}