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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<meta charset="utf-8">
<title>GrDiffBuilderUnified</title>

<script src="/node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js"></script>

<script src="/node_modules/@webcomponents/webcomponentsjs/webcomponents-lite.js"></script>
<script src="/components/wct-browser-legacy/browser.js"></script>

<script type="module">
import '../../../test/common-test-setup.js';
import '../gr-diff/gr-diff-group.js';
import './gr-diff-builder.js';
import './gr-diff-builder-unified.js';
import {GrDiffLine} from '../gr-diff/gr-diff-line.js';
import {GrDiffGroup} from '../gr-diff/gr-diff-group.js';
import {GrDiffBuilderUnified} from './gr-diff-builder-unified.js';

suite('GrDiffBuilderUnified tests', () => {
  let prefs;
  let outputEl;
  let diffBuilder;

  setup(()=> {
    prefs = {
      line_length: 10,
      show_tabs: true,
      tab_size: 4,
    };
    outputEl = document.createElement('div');
    diffBuilder = new GrDiffBuilderUnified({}, prefs, outputEl, []);
  });

  suite('buildSectionElement for BOTH group', () => {
    let lines;
    let group;

    setup(() => {
      lines = [
        new GrDiffLine(GrDiffLine.Type.BOTH, 1, 2),
        new GrDiffLine(GrDiffLine.Type.BOTH, 2, 3),
        new GrDiffLine(GrDiffLine.Type.BOTH, 3, 4),
      ];
      lines[0].text = 'def hello_world():';
      lines[1].text = '  print "Hello World";';
      lines[2].text = '  return True';

      group = new GrDiffGroup(GrDiffGroup.Type.BOTH, lines);
    });

    test('creates the section', () => {
      const sectionEl = diffBuilder.buildSectionElement(group);
      assert.isTrue(sectionEl.classList.contains('section'));
      assert.isTrue(sectionEl.classList.contains('both'));
    });

    test('creates each unchanged row once', () => {
      const sectionEl = diffBuilder.buildSectionElement(group);
      const rowEls = sectionEl.querySelectorAll('.diff-row');

      assert.equal(rowEls.length, 3);

      assert.equal(
          rowEls[0].querySelector('.lineNum.left').textContent,
          lines[0].beforeNumber);
      assert.equal(
          rowEls[0].querySelector('.lineNum.right').textContent,
          lines[0].afterNumber);
      assert.equal(
          rowEls[0].querySelector('.content').textContent, lines[0].text);

      assert.equal(
          rowEls[1].querySelector('.lineNum.left').textContent,
          lines[1].beforeNumber);
      assert.equal(
          rowEls[1].querySelector('.lineNum.right').textContent,
          lines[1].afterNumber);
      assert.equal(
          rowEls[1].querySelector('.content').textContent, lines[1].text);

      assert.equal(
          rowEls[2].querySelector('.lineNum.left').textContent,
          lines[2].beforeNumber);
      assert.equal(
          rowEls[2].querySelector('.lineNum.right').textContent,
          lines[2].afterNumber);
      assert.equal(
          rowEls[2].querySelector('.content').textContent, lines[2].text);
    });
  });

  suite('buildSectionElement for DELTA group', () => {
    let lines;
    let group;

    setup(() => {
      lines = [
        new GrDiffLine(GrDiffLine.Type.REMOVE, 1),
        new GrDiffLine(GrDiffLine.Type.REMOVE, 2),
        new GrDiffLine(GrDiffLine.Type.ADD, 2),
        new GrDiffLine(GrDiffLine.Type.ADD, 3),
      ];
      lines[0].text = 'def hello_world():';
      lines[1].text = '  print "Hello World"';
      lines[2].text = 'def hello_universe()';
      lines[3].text = '  print "Hello Universe"';

      group = new GrDiffGroup(GrDiffGroup.Type.DELTA, lines);
    });

    test('creates the section', () => {
      const sectionEl = diffBuilder.buildSectionElement(group);
      assert.isTrue(sectionEl.classList.contains('section'));
      assert.isTrue(sectionEl.classList.contains('delta'));
    });

    test('creates the section with class if ignoredWhitespaceOnly', () => {
      group.ignoredWhitespaceOnly = true;
      const sectionEl = diffBuilder.buildSectionElement(group);
      assert.isTrue(sectionEl.classList.contains('ignoredWhitespaceOnly'));
    });

    test('creates the section with class if dueToRebase', () => {
      group.dueToRebase = true;
      const sectionEl = diffBuilder.buildSectionElement(group);
      assert.isTrue(sectionEl.classList.contains('dueToRebase'));
    });

    test('creates first the removed and then the added rows', () => {
      const sectionEl = diffBuilder.buildSectionElement(group);
      const rowEls = sectionEl.querySelectorAll('.diff-row');

      assert.equal(rowEls.length, 4);

      assert.equal(
          rowEls[0].querySelector('.lineNum.left').textContent,
          lines[0].beforeNumber);
      assert.isNotOk(rowEls[0].querySelector('.lineNum.right'));
      assert.equal(
          rowEls[0].querySelector('.content').textContent, lines[0].text);

      assert.equal(
          rowEls[1].querySelector('.lineNum.left').textContent,
          lines[1].beforeNumber);
      assert.isNotOk(rowEls[1].querySelector('.lineNum.right'));
      assert.equal(
          rowEls[1].querySelector('.content').textContent, lines[1].text);

      assert.isNotOk(rowEls[2].querySelector('.lineNum.left'));
      assert.equal(
          rowEls[2].querySelector('.lineNum.right').textContent,
          lines[2].afterNumber);
      assert.equal(
          rowEls[2].querySelector('.content').textContent, lines[2].text);

      assert.isNotOk(rowEls[3].querySelector('.lineNum.left'));
      assert.equal(
          rowEls[3].querySelector('.lineNum.right').textContent,
          lines[3].afterNumber);
      assert.equal(
          rowEls[3].querySelector('.content').textContent, lines[3].text);
    });

    test('creates only the added rows if only ignored whitespace', () => {
      group.ignoredWhitespaceOnly = true;
      const sectionEl = diffBuilder.buildSectionElement(group);
      const rowEls = sectionEl.querySelectorAll('.diff-row');

      assert.equal(rowEls.length, 2);

      assert.isNotOk(rowEls[0].querySelector('.lineNum.left'));
      assert.equal(
          rowEls[0].querySelector('.lineNum.right').textContent,
          lines[2].afterNumber);
      assert.equal(
          rowEls[0].querySelector('.content').textContent, lines[2].text);

      assert.isNotOk(rowEls[1].querySelector('.lineNum.left'));
      assert.equal(
          rowEls[1].querySelector('.lineNum.right').textContent,
          lines[3].afterNumber);
      assert.equal(
          rowEls[1].querySelector('.content').textContent, lines[3].text);
    });
  });
});
</script>