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Copyright (C) 2016 The Android Open Source Project
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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-diff-cursor</title>
<script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<script src="../../../scripts/util.js"></script>
<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="../gr-diff/gr-diff.html">
<link rel="import" href="./gr-diff-cursor.html">
<link rel="import" href="../../shared/gr-rest-api-interface/mock-diff-response_test.html">
<test-fixture id="basic">
<template>
<mock-diff-response></mock-diff-response>
<gr-diff></gr-diff>
<gr-diff-cursor></gr-diff-cursor>
</template>
</test-fixture>
<script>
suite('gr-diff-cursor tests', function() {
var cursorElement;
var diffElement;
var mockDiffResponse;
setup(function(done) {
stub('gr-rest-api-interface', {
getLoggedIn: function() { return Promise.resolve(false); },
});
var fixtureElems = fixture('basic');
mockDiffResponse = fixtureElems[0];
diffElement = fixtureElems[1];
cursorElement = fixtureElems[2];
// Register the diff with the cursor.
cursorElement.push('diffs', diffElement);
diffElement.$.restAPI.getDiffPreferences().then(function(prefs) {
diffElement.prefs = prefs;
});
sinon.stub(diffElement, '_getDiff', function() {
return Promise.resolve(mockDiffResponse.diffResponse);
});
sinon.stub(diffElement, '_getDiffComments', function() {
return Promise.resolve({baseComments: [], comments: []});
});
sinon.stub(diffElement, '_getDiffDrafts', function() {
return Promise.resolve({baseComments: [], comments: []});
});
sinon.stub(diffElement, '_getDiffRobotComments', function() {
return Promise.resolve({baseComments: [], comments: []});
});
var setupDone = function() {
cursorElement.moveToFirstChunk();
done();
diffElement.removeEventListener('render', setupDone);
};
diffElement.addEventListener('render', setupDone);
diffElement.reload();
});
test('diff cursor functionality (side-by-side)', function() {
// The cursor has been initialized to the first delta.
assert.isOk(cursorElement.diffRow);
var firstDeltaRow = diffElement.$$('.section.delta .diff-row');
assert.equal(cursorElement.diffRow, firstDeltaRow);
cursorElement.moveDown();
assert.notEqual(cursorElement.diffRow, firstDeltaRow);
assert.equal(cursorElement.diffRow, firstDeltaRow.nextSibling);
cursorElement.moveUp();
assert.notEqual(cursorElement.diffRow, firstDeltaRow.nextSibling);
assert.equal(cursorElement.diffRow, firstDeltaRow);
});
test('cursor scroll behavior', function() {
cursorElement._handleDiffRenderStart();
assert.equal(cursorElement._scrollBehavior, 'keep-visible');
cursorElement._handleWindowScroll();
assert.equal(cursorElement._scrollBehavior, 'never');
cursorElement.handleDiffUpdate();
assert.equal(cursorElement._scrollBehavior, 'keep-visible');
});
suite('unified diff', function() {
setup(function(done) {
// We must allow the diff to re-render after setting the viewMode.
var renderHandler = function() {
diffElement.removeEventListener('render', renderHandler);
cursorElement.reInitCursor();
done();
};
diffElement.addEventListener('render', renderHandler);
diffElement.viewMode = 'UNIFIED_DIFF';
});
test('diff cursor functionality (unified)', function() {
// The cursor has been initialized to the first delta.
assert.isOk(cursorElement.diffRow);
var firstDeltaRow = diffElement.$$('.section.delta .diff-row');
assert.equal(cursorElement.diffRow, firstDeltaRow);
firstDeltaRow = diffElement.$$('.section.delta .diff-row');
assert.equal(cursorElement.diffRow, firstDeltaRow);
cursorElement.moveDown();
assert.notEqual(cursorElement.diffRow, firstDeltaRow);
assert.equal(cursorElement.diffRow, firstDeltaRow.nextSibling);
cursorElement.moveUp();
assert.notEqual(cursorElement.diffRow, firstDeltaRow.nextSibling);
assert.equal(cursorElement.diffRow, firstDeltaRow);
});
});
test('cursor side functionality', function() {
// The side only applies to side-by-side mode, which should be the default
// mode.
assert.equal(diffElement.viewMode, 'SIDE_BY_SIDE');
var firstDeltaSection = diffElement.$$('.section.delta');
var firstDeltaRow = firstDeltaSection.querySelector('.diff-row');
// Because the first delta in this diff is on the right, it should be set
// to the right side.
assert.equal(cursorElement.side, 'right');
assert.equal(cursorElement.diffRow, firstDeltaRow);
var firstIndex = cursorElement.$.cursorManager.index;
// Move the side to the left. Because this delta only has a right side, we
// should be moved up to the previous line where there is content on the
// right. The previous row is part of the previous section.
cursorElement.moveLeft();
assert.equal(cursorElement.side, 'left');
assert.notEqual(cursorElement.diffRow, firstDeltaRow);
assert.equal(cursorElement.$.cursorManager.index, firstIndex - 1);
assert.equal(cursorElement.diffRow.parentElement,
firstDeltaSection.previousSibling);
// If we move down, we should skip everything in the first delta because
// we are on the left side and the first delta has no content on the left.
cursorElement.moveDown();
assert.equal(cursorElement.side, 'left');
assert.notEqual(cursorElement.diffRow, firstDeltaRow);
assert.isTrue(cursorElement.$.cursorManager.index > firstIndex);
assert.equal(cursorElement.diffRow.parentElement,
firstDeltaSection.nextSibling);
});
test('chunk skip functionality', function() {
var chunks = Polymer.dom(diffElement.root).querySelectorAll(
'.section.delta');
var indexOfChunk = function(chunk) {
return Array.prototype.indexOf.call(chunks, chunk);
};
// We should be initialized to the first chunk. Since this chunk only has
// content on the right side, our side should be right.
var currentIndex = indexOfChunk(cursorElement.diffRow.parentElement);
assert.equal(currentIndex, 0);
assert.equal(cursorElement.side, 'right');
// Move to the next chunk.
cursorElement.moveToNextChunk();
// Since this chunk only has content on the left side. we should have been
// automatically mvoed over.
var previousIndex = currentIndex;
currentIndex = indexOfChunk(cursorElement.diffRow.parentElement);
assert.equal(currentIndex, previousIndex + 1);
assert.equal(cursorElement.side, 'left');
});
test('initialLineNumber disabled', function(done) {
var moveToNumStub = sinon.stub(cursorElement, 'moveToLineNumber');
var moveToChunkStub = sinon.stub(cursorElement, 'moveToFirstChunk');
diffElement.addEventListener('render', function() {
assert.isFalse(moveToNumStub.called);
assert.isTrue(moveToChunkStub.called);
done();
});
diffElement.reload();
});
test('initialLineNumber enabled', function(done) {
var moveToNumStub = sinon.stub(cursorElement, 'moveToLineNumber');
var moveToChunkStub = sinon.stub(cursorElement, 'moveToFirstChunk');
diffElement.addEventListener('render', function() {
assert.isFalse(moveToChunkStub.called);
assert.isTrue(moveToNumStub.called);
assert.equal(moveToNumStub.lastCall.args[0], 10);
assert.equal(moveToNumStub.lastCall.args[1], 'right');
done();
});
cursorElement.initialLineNumber = 10;
cursorElement.side = 'right';
diffElement.reload();
});
test('getAddress', function() {
// It should initialize to the first chunk: line 5 of the revision.
assert.equal(cursorElement.getAddress(), '5');
// Revision line 4 is up.
cursorElement.moveUp();
assert.equal(cursorElement.getAddress(), '4');
// Base line 4 is left.
cursorElement.moveLeft();
assert.equal(cursorElement.getAddress(), 'b4');
// Moving to the next chunk takes it back to the start.
cursorElement.moveToNextChunk();
assert.equal(cursorElement.getAddress(), '5');
// The following chunk is a removal starting on line 10 of the base.
cursorElement.moveToNextChunk();
assert.equal(cursorElement.getAddress(), 'b10');
// Should be an empty string if there is no selection.
cursorElement.$.cursorManager.unsetCursor();
assert.equal(cursorElement.getAddress(), '');
});
test('_findRowByNumber', function() {
// Get the first ab row after the first chunk.
var row = Polymer.dom(diffElement.root).querySelectorAll('tr')[8];
// It should be line 8 on the right, but line 5 on the left.
assert.equal(cursorElement._findRowByNumber(8, 'right'), row);
assert.equal(cursorElement._findRowByNumber(5, 'left'), row);
});
});
</script>