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<!--
Copyright (C) 2016 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.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

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distributed under the License is distributed on an "AS IS" BASIS,
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limitations under 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-reviewer-list</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>

<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="gr-autocomplete.html">

<test-fixture id="basic">
  <template>
    <gr-autocomplete></gr-autocomplete>
  </template>
</test-fixture>

<script>
  suite('gr-autocomplete tests', function() {
    var element;

    setup(function() {
      element = fixture('basic');
    });

    test('renders', function(done) {
      var promise;
      var queryStub = sinon.spy(function(input) {
        return promise = Promise.resolve([
          {name: input + ' 0', value: 0},
          {name: input + ' 1', value: 1},
          {name: input + ' 2', value: 2},
          {name: input + ' 3', value: 3},
          {name: input + ' 4', value: 4},
        ]);
      });
      element.query = queryStub;

      assert.isTrue(element.$.suggestions.hasAttribute('hidden'));
      assert.equal(element.$.cursor.index, -1);

      element.text = 'blah';

      assert.isTrue(queryStub.called);
      element._focused = true;

      promise.then(function() {
        assert.isFalse(element.$.suggestions.hasAttribute('hidden'));

        var suggestions = element.$.suggestions.querySelectorAll('li');
        assert.equal(suggestions.length, 5);

        for (var i = 0; i < 5; i++) {
          assert.equal(suggestions[i].textContent, 'blah ' + i);
        }

        assert.notEqual(element.$.cursor.index, -1);
        done();
      });
    });

    test('emits cancel', function(done) {
      var promise;
      var queryStub = sinon.spy(function() {
        return promise = Promise.resolve([
          {name: 'blah', value: 123},
        ]);
      });
      element.query = queryStub;

      assert.isTrue(element.$.suggestions.hasAttribute('hidden'));

      element._focused = true;
      element.text = 'blah';

      promise.then(function() {
        assert.isFalse(element.$.suggestions.hasAttribute('hidden'));

        var cancelHandler = sinon.spy();
        element.addEventListener('cancel', cancelHandler);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 27, null, 'esc');
        assert.isTrue(cancelHandler.called);
        assert.isTrue(element.$.suggestions.hasAttribute('hidden'));

        done();
      });
    });

    test('emits commit and handles cursor movement', function(done) {
      var promise;
      var queryStub = sinon.spy(function(input) {
        return promise = Promise.resolve([
          {name: input + ' 0', value: 0},
          {name: input + ' 1', value: 1},
          {name: input + ' 2', value: 2},
          {name: input + ' 3', value: 3},
          {name: input + ' 4', value: 4},
        ]);
      });
      element.query = queryStub;

      assert.isTrue(element.$.suggestions.hasAttribute('hidden'));
      assert.equal(element.$.cursor.index, -1);
      element._focused = true;
      element.text = 'blah';

      promise.then(function() {
        assert.isFalse(element.$.suggestions.hasAttribute('hidden'));

        var commitHandler = sinon.spy();
        element.addEventListener('commit', commitHandler);

        assert.equal(element.$.cursor.index, 0);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 40, null,
            'down');

        assert.equal(element.$.cursor.index, 1);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 40, null,
            'down');

        assert.equal(element.$.cursor.index, 2);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 38, null, 'up');

        assert.equal(element.$.cursor.index, 1);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 13, null,
            'enter');

        assert.equal(element.value, 1);
        assert.isTrue(commitHandler.called);
        assert.equal(commitHandler.getCall(0).args[0].detail.value, 1);
        assert.isTrue(element.$.suggestions.hasAttribute('hidden'));

        done();
      });
    });

    test('clear-on-commit behavior (off)', function(done) {
      var promise;
      var queryStub = sinon.spy(function() {
        return promise = Promise.resolve([{name: 'suggestion', value: 0}]);
      });
      element.query = queryStub;
      element.text = 'blah';

      promise.then(function() {
        var commitHandler = sinon.spy();
        element.addEventListener('commit', commitHandler);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 13, null,
            'enter');

        assert.isTrue(commitHandler.called);
        assert.equal(element.text, 'suggestion');
        done();
      });
    });

    test('clear-on-commit behavior (on)', function(done) {
      var promise;
      var queryStub = sinon.spy(function() {
        return promise = Promise.resolve([{name: 'suggestion', value: 0}]);
      });
      element.query = queryStub;
      element.text = 'blah';
      element.clearOnCommit = true;

      promise.then(function() {
        var commitHandler = sinon.spy();
        element.addEventListener('commit', commitHandler);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 13, null,
            'enter');

        assert.isTrue(commitHandler.called);
        assert.equal(element.text, '');
        done();
      });
    });

    test('threshold guards the query', function() {
      var queryStub = sinon.spy(function() {
        return Promise.resolve([]);
      });
      element.query = queryStub;

      element.threshold = 2;

      element.text = 'a';

      assert.isFalse(queryStub.called);

      element.text = 'ab';

      assert.isTrue(queryStub.called);
    });

    test('_computeClass respects border property', function() {
      assert.equal(element._computeClass(), '');
      assert.equal(element._computeClass(false), '');
      assert.equal(element._computeClass(true), 'borderless');
    });

    test('undefined or empty text results in no suggestions', function() {
      sinon.spy(element, '_updateSuggestions');
      element.text = undefined;
      assert(element._updateSuggestions.calledOnce);
      assert.equal(element._suggestions.length, 0);
    });

    test('multi completes only the last part of the query', function(done) {
      var promise;
      var queryStub = sinon.stub()
          .returns(promise = Promise.resolve([{name: 'suggestion', value: 0}]));
      element.query = queryStub;
      element.text = 'blah blah';
      element.multi = true;

      promise.then(function() {
        var commitHandler = sinon.spy();
        element.addEventListener('commit', commitHandler);

        MockInteractions.pressAndReleaseKeyOn(element.$.input, 13, null,
            'enter');

        assert.isTrue(commitHandler.called);
        assert.equal(element.text, 'blah 0');
        done();
      });
    });

    test('tab key completes only when suggestions exist', function() {
      var commitStub = sinon.stub(element, '_commit');
      element._suggestions = [];
      MockInteractions.pressAndReleaseKeyOn(element.$.input, 9, null, 'tab');
      assert.isFalse(commitStub.called);
      element._suggestions = ['tunnel snakes rule!'];
      MockInteractions.pressAndReleaseKeyOn(element.$.input, 9, null, 'tab');
      assert.isTrue(commitStub.called);
      commitStub.restore();
    });

    test('tabCompleteWithoutCommit flag functions', function() {
      var commitHandler = sinon.spy();
      element.addEventListener('commit', commitHandler);
      element._suggestions = ['tunnel snakes rule!'];
      element.tabCompleteWithoutCommit = true;
      MockInteractions.pressAndReleaseKeyOn(element.$.input, 9, null, 'tab');
      assert.isFalse(commitHandler.called);
      element.tabCompleteWithoutCommit = false;
      element._suggestions = ['tunnel snakes rule!'];
      MockInteractions.pressAndReleaseKeyOn(element.$.input, 9, null, 'tab');
      assert.isTrue(commitHandler.called);
    });

    test('_focused flag properly triggered', function(done) {
      flush(function() {
        assert.isFalse(element._focused);
        var input = element.$$('input');
        MockInteractions.focus(input);
        assert.isTrue(element._focused);
        done();
      });
    });

    test('_focused flag shows/hides the suggestions', function() {
      var suggestions = ['hello', 'its me'];
      assert.isTrue(element._computeSuggestionsHidden(suggestions, false));
      assert.isFalse(element._computeSuggestionsHidden(suggestions, true));
    });

    test('tap on suggestion commits and refocuses on input', function() {
      var focusSpy = sinon.spy(element, 'focus');
      var commitSpy = sinon.spy(element, '_commit');
      element._focused = true;
      element._suggestions = [{name: 'first suggestion'}];
      assert.isFalse(element.$.suggestions.hasAttribute('hidden'));
      MockInteractions.tap(element.$$('#suggestions li:first-child'));
      flushAsynchronousOperations();
      assert.isTrue(focusSpy.called);
      assert.isTrue(commitSpy.called);
      assert.isTrue(element.$.suggestions.hasAttribute('hidden'));
      assert.isTrue(element._focused);
      focusSpy.restore();
      commitSpy.restore();
    });

    test('input-keydown event fired', function() {
      var listener = sinon.spy();
      element.addEventListener('input-keydown', listener);
      MockInteractions.pressAndReleaseKeyOn(element.$.input, 9, null, 'tab');
      flushAsynchronousOperations();
      assert.isTrue(listener.called);
    });
  });
</script>