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@license
Copyright (C) 2017 The Android Open Source Project

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-textarea</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<link rel="import" href="gr-textarea.html">

<script>void(0);</script>
<test-fixture id="basic">
  <template>
    <gr-textarea></gr-textarea>
  </template>
</test-fixture>

<script>
  suite('gr-textarea tests', () => {
    let element;
    let sandbox;

    setup(() => {
      sandbox = sinon.sandbox.create();
      element = fixture('basic');
    });

    teardown(() => {
      sandbox.restore();
    });

    test('monospace is set properly', () => {
      assert.isFalse(element.classList.contains('monospace'));
      element.monospace = true;
      element.ready();
      assert.isTrue(element.classList.contains('monospace'));
    });

    test('hideBorder is set properly', () => {
      assert.isFalse(element.$.textarea.classList.contains('noBorder'));
      element.hideBorder = true;
      element.ready();
      assert.isTrue(element.$.textarea.classList.contains('noBorder'));
    });

    test('emoji selector is not open with the textarea lacks focus', () => {
      element.$.textarea.selectionStart = 1;
      element.$.textarea.selectionEnd = 1;
      element.text = ':';
      assert.isFalse(!element.$.emojiSuggestions.isHidden);
    });

    test('emoji selector is not open when a general text is entered', () => {
      MockInteractions.focus(element.$.textarea);
      element.$.textarea.selectionStart = 9;
      element.$.textarea.selectionEnd = 9;
      element.text = 'some text';
      assert.isFalse(!element.$.emojiSuggestions.isHidden);
    });

    test('emoji selector opens when a colon is typed & the textarea has focus',
        () => {
          MockInteractions.focus(element.$.textarea);
          // Needed for Safari tests. selectionStart is not updated when text is
          // updated.
          element.$.textarea.selectionStart = 1;
          element.$.textarea.selectionEnd = 1;
          element.text = ':';
          element.$.textarea.selectionStart = 2;
          element.$.textarea.selectionEnd = 2;
          element.text = ':t';
          flushAsynchronousOperations();
          assert.isFalse(element.$.emojiSuggestions.isHidden);
          assert.equal(element._colonIndex, 0);
          assert.isFalse(element._hideAutocomplete);
          assert.equal(element._currentSearchString, 't');
        });

    test('emoji selector closes when text changes before the colon', () => {
      const resetStub = sandbox.stub(element, '_resetEmojiDropdown');
      MockInteractions.focus(element.$.textarea);
      flushAsynchronousOperations();
      element.$.textarea.selectionStart = 10;
      element.$.textarea.selectionEnd = 10;
      element.text = 'test test ';
      element.$.textarea.selectionStart = 12;
      element.$.textarea.selectionEnd = 12;
      element.text = 'test test :';
      element.$.textarea.selectionStart = 15;
      element.$.textarea.selectionEnd = 15;
      element.text = 'test test :smi';

      assert.equal(element._currentSearchString, 'smi');
      assert.isFalse(resetStub.called);
      element.text = 'test test test :smi';
      assert.isTrue(resetStub.called);
    });

    test('_resetEmojiDropdown', () => {
      const closeSpy = sandbox.spy(element, 'closeDropdown');
      element._resetEmojiDropdown();
      assert.equal(element._currentSearchString, '');
      assert.isTrue(element._hideAutocomplete);
      assert.equal(element._colonIndex, null);

      element.$.emojiSuggestions.open();
      flushAsynchronousOperations();
      element._resetEmojiDropdown();
      assert.isTrue(closeSpy.called);
    });

    test('_determineSuggestions', () => {
      const emojiText = 'tear';
      const formatSpy = sandbox.spy(element, '_formatSuggestions');
      element._determineSuggestions(emojiText);
      assert.isTrue(formatSpy.called);
      assert.isTrue(formatSpy.lastCall.calledWithExactly(
          [{dataValue: '😢', value: '😢', match: 'tear', text: '😢 tear'},
          {dataValue: '😂', value: '😂', match: 'tears', text: '😂 tears'}]));
    });

    test('_formatSuggestions', () => {
      const matchedSuggestions = [{value: '😢', match: 'tear'},
          {value: '😂', match: 'tears'}];
      element._formatSuggestions(matchedSuggestions);
      assert.deepEqual(
          [{value: '😢', dataValue: '😢', match: 'tear', text: '😢 tear'},
          {value: '😂', dataValue: '😂', match: 'tears', text: '😂 tears'}],
          element._suggestions);
    });

    test('_handleEmojiSelect', () => {
      element.$.textarea.selectionStart = 16;
      element.$.textarea.selectionEnd = 16;
      element.text = 'test test :tears';
      element._colonIndex = 10;
      const selectedItem = {dataset: {value: '😂'}};
      const event = {detail: {selected: selectedItem}};
      element._handleEmojiSelect(event);
      assert.equal(element.text, 'test test 😂 ');
    });

    test('_updateCaratPosition', () => {
      element.$.textarea.selectionStart = 4;
      element.$.textarea.selectionEnd = 4;
      element.text = 'test';
      element._updateCaratPosition();
      assert.deepEqual(element.$.hiddenText.innerHTML, element.text +
          element.$.caratSpan.outerHTML);
    });

    test('emoji dropdown is closed when iron-overlay-closed is fired', () => {
      const resetSpy = sandbox.spy(element, '_resetEmojiDropdown');
      element.$.emojiSuggestions.fire('dropdown-closed');
      assert.isTrue(resetSpy.called);
    });

    test('_onValueChanged fires bind-value-changed', () => {
      const listenerStub = sinon.stub();
      const eventObject = {currentTarget: {focused: false}};
      element.addEventListener('bind-value-changed', listenerStub);
      element._onValueChanged(eventObject);
      assert.isTrue(listenerStub.called);
    });

    suite('keyboard shortcuts', () => {
      function setupDropdown(callback) {
        MockInteractions.focus(element.$.textarea);
        element.$.textarea.selectionStart = 1;
        element.$.textarea.selectionEnd = 1;
        element.text = ':';
        element.$.textarea.selectionStart = 1;
        element.$.textarea.selectionEnd = 2;
        element.text = ':1';
        flushAsynchronousOperations();
      }

      test('escape key', () => {
        const resetSpy = sandbox.spy(element, '_resetEmojiDropdown');
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 27);
        assert.isFalse(resetSpy.called);
        setupDropdown();
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 27);
        assert.isTrue(resetSpy.called);
        assert.isFalse(!element.$.emojiSuggestions.isHidden);
      });

      test('up key', () => {
        const upSpy = sandbox.spy(element.$.emojiSuggestions, 'cursorUp');
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 38);
        assert.isFalse(upSpy.called);
        setupDropdown();
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 38);
        assert.isTrue(upSpy.called);
      });

      test('down key', () => {
        const downSpy = sandbox.spy(element.$.emojiSuggestions, 'cursorDown');
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 40);
        assert.isFalse(downSpy.called);
        setupDropdown();
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 40);
        assert.isTrue(downSpy.called);
      });

      test('enter key', () => {
        const enterSpy = sandbox.spy(element.$.emojiSuggestions,
            'getCursorTarget');
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 13);
        assert.isFalse(enterSpy.called);
        setupDropdown();
        MockInteractions.pressAndReleaseKeyOn(element.$.textarea, 13);
        assert.isTrue(enterSpy.called);
        flushAsynchronousOperations();
        // A space is automatically added at the end.
        assert.equal(element.text, '💯 ');
      });
    });
  });
</script>