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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-view</title>
<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<script src="../../../bower_components/page/page.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-view.html">
<script>void(0);</script>
<test-fixture id="basic">
<template>
<gr-diff-view></gr-diff-view>
</template>
</test-fixture>
<test-fixture id="blank">
<template>
<div></div>
</template>
</test-fixture>
<script>
suite('gr-diff-view tests', function() {
var element;
var sandbox;
setup(function() {
sandbox = sinon.sandbox.create();
stub('gr-rest-api-interface', {
getLoggedIn: function() { return Promise.resolve(false); },
getProjectConfig: function() { return Promise.resolve({}); },
getDiffChangeDetail: function() { return Promise.resolve(null); },
getChangeFiles: function() { return Promise.resolve({}); },
saveFileReviewed: function() { return Promise.resolve(); },
});
element = fixture('basic');
});
teardown(function() {
sandbox.restore();
});
test('toggle left diff with a hotkey', function() {
var toggleLeftDiffStub = sandbox.stub(element.$.diff, 'toggleLeftDiff');
MockInteractions.pressAndReleaseKeyOn(element, 65, 'shift', 'a');
assert.isTrue(toggleLeftDiffStub.calledOnce);
});
test('keyboard shortcuts', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: 'PARENT',
patchNum: '10',
};
element._change = {
revisions: {
a: {_number: 10},
},
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
element.changeViewState.selectedFileIndex = 1;
var showStub = sandbox.stub(page, 'show');
MockInteractions.pressAndReleaseKeyOn(element, 85, null, 'u');
assert(showStub.lastCall.calledWithExactly('/c/42/'),
'Should navigate to /c/42/');
MockInteractions.pressAndReleaseKeyOn(element, 221, null, ']');
assert(showStub.lastCall.calledWithExactly('/c/42/10/wheatley.md'),
'Should navigate to /c/42/10/wheatley.md');
element._path = 'wheatley.md';
assert.equal(element.changeViewState.selectedFileIndex, 2);
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/10/glados.txt'),
'Should navigate to /c/42/10/glados.txt');
element._path = 'glados.txt';
assert.equal(element.changeViewState.selectedFileIndex, 1);
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/10/chell.go'),
'Should navigate to /c/42/10/chell.go');
element._path = 'chell.go';
assert.equal(element.changeViewState.selectedFileIndex, 0);
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/'),
'Should navigate to /c/42/');
assert.equal(element.changeViewState.selectedFileIndex, 0);
var showPrefsStub = sandbox.stub(element.$.prefsOverlay, 'open',
function() { return Promise.resolve({}); });
MockInteractions.pressAndReleaseKeyOn(element, 188, null, ',');
assert(showPrefsStub.calledOnce);
var scrollStub = sandbox.stub(element.$.cursor, 'moveToNextChunk');
MockInteractions.pressAndReleaseKeyOn(element, 78, null, 'n');
assert(scrollStub.calledOnce);
scrollStub = sandbox.stub(element.$.cursor, 'moveToPreviousChunk');
MockInteractions.pressAndReleaseKeyOn(element, 80, null, 'p');
assert(scrollStub.calledOnce);
scrollStub = sandbox.stub(element.$.cursor, 'moveToNextCommentThread');
MockInteractions.pressAndReleaseKeyOn(element, 78, 'shift', 'n');
assert(scrollStub.calledOnce);
scrollStub = sandbox.stub(element.$.cursor,
'moveToPreviousCommentThread');
MockInteractions.pressAndReleaseKeyOn(element, 80, 'shift', 'p');
assert(scrollStub.calledOnce);
var computeContainerClassStub = sandbox.stub(element.$.diff,
'_computeContainerClass');
MockInteractions.pressAndReleaseKeyOn(element, 74, null, 'j');
assert(computeContainerClassStub.lastCall.calledWithExactly(
false, 'SIDE_BY_SIDE', true));
MockInteractions.pressAndReleaseKeyOn(element, 27, null, 'esc');
assert(computeContainerClassStub.lastCall.calledWithExactly(
false, 'SIDE_BY_SIDE', false));
});
test('saving diff preferences', function() {
var savePrefs = sandbox.stub(element, '_handlePrefsSave');
var cancelPrefs = sandbox.stub(element, '_handlePrefsCancel');
element.$.diffPreferences._handleSave();
assert(savePrefs.calledOnce);
assert(cancelPrefs.notCalled);
});
test('cancelling diff preferences', function() {
var savePrefs = sandbox.stub(element, '_handlePrefsSave');
var cancelPrefs = sandbox.stub(element, '_handlePrefsCancel');
element.$.diffPreferences._handleCancel();
assert(cancelPrefs.calledOnce);
assert(savePrefs.notCalled);
});
test('keyboard shortcuts with patch range', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: '5',
patchNum: '10',
};
element._change = {
revisions: {
a: {_number: 10},
},
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
var showStub = sandbox.stub(page, 'show');
MockInteractions.pressAndReleaseKeyOn(element, 65, null, 'a');
assert.isTrue(showStub.notCalled, 'The `a` keyboard shortcut should ' +
'only work when the user is logged in.');
assert.isNull(window.sessionStorage.getItem(
'changeView.showReplyDialog'));
element._loggedIn = true;
MockInteractions.pressAndReleaseKeyOn(element, 65, null, 'a');
assert.isTrue(element.changeViewState.showReplyDialog);
assert(showStub.lastCall.calledWithExactly('/c/42/5..10'),
'Should navigate to /c/42/5..10');
MockInteractions.pressAndReleaseKeyOn(element, 85, null, 'u');
assert(showStub.lastCall.calledWithExactly('/c/42/5..10'),
'Should navigate to /c/42/5..10');
MockInteractions.pressAndReleaseKeyOn(element, 221, null, ']');
assert(showStub.lastCall.calledWithExactly('/c/42/5..10/wheatley.md'),
'Should navigate to /c/42/5..10/wheatley.md');
element._path = 'wheatley.md';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/5..10/glados.txt'),
'Should navigate to /c/42/5..10/glados.txt');
element._path = 'glados.txt';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/5..10/chell.go'),
'Should navigate to /c/42/5..10/chell.go');
element._path = 'chell.go';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/5..10'),
'Should navigate to /c/42/5..10');
});
test('keyboard shortcuts with old patch number', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: 'PARENT',
patchNum: '1',
};
element._change = {
revisions: {
a: {_number: 1},
b: {_number: 2},
},
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
var showStub = sandbox.stub(page, 'show');
MockInteractions.pressAndReleaseKeyOn(element, 65, null, 'a');
assert.isTrue(showStub.notCalled, 'The `a` keyboard shortcut should ' +
'only work when the user is logged in.');
assert.isNull(window.sessionStorage.getItem(
'changeView.showReplyDialog'));
element._loggedIn = true;
MockInteractions.pressAndReleaseKeyOn(element, 65, null, 'a');
assert.isTrue(element.changeViewState.showReplyDialog);
assert(showStub.lastCall.calledWithExactly('/c/42/1'),
'Should navigate to /c/42/1');
MockInteractions.pressAndReleaseKeyOn(element, 85, null, 'u');
assert(showStub.lastCall.calledWithExactly('/c/42/1'),
'Should navigate to /c/42/1');
MockInteractions.pressAndReleaseKeyOn(element, 221, null, ']');
assert(showStub.lastCall.calledWithExactly('/c/42/1/wheatley.md'),
'Should navigate to /c/42/1/wheatley.md');
element._path = 'wheatley.md';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/1/glados.txt'),
'Should navigate to /c/42/1/glados.txt');
element._path = 'glados.txt';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/1/chell.go'),
'Should navigate to /c/42/1/chell.go');
element._path = 'chell.go';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/1'),
'Should navigate to /c/42/1');
});
test('go up to change via kb without change loaded', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: 'PARENT',
patchNum: '1',
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
var showStub = sandbox.stub(page, 'show');
MockInteractions.pressAndReleaseKeyOn(element, 65, null, 'a');
assert.isTrue(showStub.notCalled, 'The `a` keyboard shortcut should ' +
'only work when the user is logged in.');
assert.isNull(window.sessionStorage.getItem(
'changeView.showReplyDialog'));
element._loggedIn = true;
MockInteractions.pressAndReleaseKeyOn(element, 65, null, 'a');
assert.isTrue(element.changeViewState.showReplyDialog);
assert(showStub.lastCall.calledWithExactly('/c/42/1'),
'Should navigate to /c/42/1');
MockInteractions.pressAndReleaseKeyOn(element, 85, null, 'u');
assert(showStub.lastCall.calledWithExactly('/c/42/1'),
'Should navigate to /c/42/1');
MockInteractions.pressAndReleaseKeyOn(element, 221, null, ']');
assert(showStub.lastCall.calledWithExactly('/c/42/1/wheatley.md'),
'Should navigate to /c/42/1/wheatley.md');
element._path = 'wheatley.md';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/1/glados.txt'),
'Should navigate to /c/42/1/glados.txt');
element._path = 'glados.txt';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/1/chell.go'),
'Should navigate to /c/42/1/chell.go');
element._path = 'chell.go';
MockInteractions.pressAndReleaseKeyOn(element, 219, null, '[');
assert(showStub.lastCall.calledWithExactly('/c/42/1'),
'Should navigate to /c/42/1');
});
test('jump to file dropdown', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: 'PARENT',
patchNum: '10',
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
flushAsynchronousOperations();
var linkEls =
Polymer.dom(element.root).querySelectorAll('.dropdown-content > a');
assert.equal(linkEls.length, 3);
assert.isFalse(linkEls[0].hasAttribute('selected'));
assert.isTrue(linkEls[1].hasAttribute('selected'));
assert.isFalse(linkEls[2].hasAttribute('selected'));
assert.equal(linkEls[0].getAttribute('data-key-nav'), '[');
assert.equal(linkEls[1].getAttribute('data-key-nav'), '');
assert.equal(linkEls[2].getAttribute('data-key-nav'), ']');
assert.equal(linkEls[0].getAttribute('href'), '/c/42/10/chell.go');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/10/glados.txt');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/10/wheatley.md');
assert.equal(element._computeFileDisplayName('/foo/bar/baz'),
'/foo/bar/baz');
assert.equal(element._computeFileDisplayName('/COMMIT_MSG'),
'Commit message');
assert.equal(element._computeFileDisplayName('/MERGE_LIST'),
'Merge list');
});
test('jump to file dropdown with patch range', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: '5',
patchNum: '10',
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
flushAsynchronousOperations();
var linkEls =
Polymer.dom(element.root).querySelectorAll('.dropdown-content > a');
assert.equal(linkEls.length, 3);
assert.isFalse(linkEls[0].hasAttribute('selected'));
assert.isTrue(linkEls[1].hasAttribute('selected'));
assert.isFalse(linkEls[2].hasAttribute('selected'));
assert.equal(linkEls[0].getAttribute('data-key-nav'), '[');
assert.equal(linkEls[1].getAttribute('data-key-nav'), '');
assert.equal(linkEls[2].getAttribute('data-key-nav'), ']');
assert.equal(linkEls[0].getAttribute('href'), '/c/42/5..10/chell.go');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/5..10/glados.txt');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/5..10/wheatley.md');
});
test('prev/up/next links', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: 'PARENT',
patchNum: '10',
};
element._change = {
revisions: {
a: {_number: 10},
},
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
flushAsynchronousOperations();
var linkEls = Polymer.dom(element.root).querySelectorAll('.navLink');
assert.equal(linkEls.length, 3);
assert.equal(linkEls[0].getAttribute('href'), '/c/42/10/chell.go');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/10/wheatley.md');
element._path = 'wheatley.md';
flushAsynchronousOperations();
assert.equal(linkEls[0].getAttribute('href'), '/c/42/10/glados.txt');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/');
assert.isFalse(linkEls[2].hasAttribute('href'));
element._path = 'chell.go';
flushAsynchronousOperations();
assert.isFalse(linkEls[0].hasAttribute('href'));
assert.equal(linkEls[1].getAttribute('href'), '/c/42/');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/10/glados.txt');
element._path = 'not_a_real_file';
flushAsynchronousOperations();
assert.equal(linkEls[0].getAttribute('href'), '/c/42/10/wheatley.md');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/10/chell.go');
});
test('download link', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: 'PARENT',
patchNum: '10',
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
flushAsynchronousOperations();
assert.equal(element.$$('.downloadLink').getAttribute('href'),
'/changes/42/revisions/10/patch?zip&path=glados.txt');
});
test('prev/up/next links with patch range', function() {
element._changeNum = '42';
element._patchRange = {
basePatchNum: '5',
patchNum: '10',
};
element._change = {
revisions: {
a: {_number: 5},
b: {_number: 10},
},
};
element._fileList = ['chell.go', 'glados.txt', 'wheatley.md'];
element._path = 'glados.txt';
flushAsynchronousOperations();
var linkEls = Polymer.dom(element.root).querySelectorAll('.navLink');
assert.equal(linkEls.length, 3);
assert.equal(linkEls[0].getAttribute('href'), '/c/42/5..10/chell.go');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/5..10');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/5..10/wheatley.md');
element._path = 'wheatley.md';
flushAsynchronousOperations();
assert.equal(linkEls[0].getAttribute('href'), '/c/42/5..10/glados.txt');
assert.equal(linkEls[1].getAttribute('href'), '/c/42/5..10');
assert.isFalse(linkEls[2].hasAttribute('href'));
element._path = 'chell.go';
flushAsynchronousOperations();
assert.isFalse(linkEls[0].hasAttribute('href'));
assert.equal(linkEls[1].getAttribute('href'), '/c/42/5..10');
assert.equal(linkEls[2].getAttribute('href'), '/c/42/5..10/glados.txt');
});
test('file review status', function(done) {
element._loggedIn = true;
element._changeNum = '42';
element._patchRange = {
basePatchNum: '1',
patchNum: '2',
};
element._fileList = ['/COMMIT_MSG'];
element._path = '/COMMIT_MSG';
var saveReviewedStub = sandbox.stub(element, '_saveReviewedState',
function() { return Promise.resolve(); });
flush(function() {
var commitMsg = Polymer.dom(element.root).querySelector(
'input[type="checkbox"]');
assert.isTrue(commitMsg.checked);
MockInteractions.tap(commitMsg);
assert.isFalse(commitMsg.checked);
assert.isTrue(saveReviewedStub.lastCall.calledWithExactly(false));
MockInteractions.tap(commitMsg);
assert.isTrue(commitMsg.checked);
assert.isTrue(saveReviewedStub.lastCall.calledWithExactly(true));
done();
});
});
test('diff mode selector correctly toggles the diff', function() {
var select = element.$.modeSelect;
var diffDisplay = element.$.diff;
element._userPrefs = {default_diff_view: 'SIDE_BY_SIDE'};
// The mode selected in the view state reflects the selected option.
assert.equal(element._getDiffViewMode(), select.value);
// The mode selected in the view state reflects the view rednered in the
// diff.
assert.equal(select.value, diffDisplay.viewMode);
// We will simulate a user change of the selected mode.
var newMode = 'UNIFIED_DIFF';
// Set the actual value of the select, and simulate the change event.
select.value = newMode;
element.fire('change', {}, {node: select});
// Make sure the handler was called and the state is still coherent.
assert.equal(element._getDiffViewMode(), newMode);
assert.equal(element._getDiffViewMode(), select.value);
assert.equal(element._getDiffViewMode(), diffDisplay.viewMode);
});
test('diff mode selector initializes from preferences', function() {
var resolvePrefs;
var prefsPromise = new Promise(function(resolve) {
resolvePrefs = resolve;
});
var getPreferencesStub = sandbox.stub(element.$.restAPI, 'getPreferences',
function() { return prefsPromise; });
// Attach a new gr-diff-view so we can intercept the preferences fetch.
var view = document.createElement('gr-diff-view');
var select = view.$.modeSelect;
fixture('blank').appendChild(view);
flushAsynchronousOperations();
// At this point the diff mode doesn't yet have the user's preference.
assert.equal(select.value, 'SIDE_BY_SIDE');
// Receive the overriding preference.
resolvePrefs({default_diff_view: 'UNIFIED'});
flushAsynchronousOperations();
assert.equal(select.value, 'SIDE_BY_SIDE');
});
test('_loadHash', function() {
assert.isNotOk(element.$.cursor.initialLineNumber);
// Ignores invalid hashes:
element._loadHash('not valid');
assert.isNotOk(element.$.cursor.initialLineNumber);
// Revision hash:
element._loadHash('234');
assert.equal(element.$.cursor.initialLineNumber, 234);
assert.equal(element.$.cursor.side, 'right');
// Base hash:
element._loadHash('b345');
assert.equal(element.$.cursor.initialLineNumber, 345);
assert.equal(element.$.cursor.side, 'left');
// GWT-style base hash:
element._loadHash('a123');
assert.equal(element.$.cursor.initialLineNumber, 123);
assert.equal(element.$.cursor.side, 'left');
});
test('_shortenPath with long path should add ellipsis', function() {
var path =
'level1/level2/level3/level4/file.js';
var shortenedPath = util.truncatePath(path);
// The expected path is truncated with an ellipsis.
var expectedPath = '\u2026/file.js';
assert.equal(shortenedPath, expectedPath);
var path = 'level2/file.js';
var shortenedPath = util.truncatePath(path);
assert.equal(shortenedPath, expectedPath);
});
test('_shortenPath with short path should not add ellipsis', function() {
var path = 'file.js';
var expectedPath = 'file.js';
var shortenedPath = util.truncatePath(path);
assert.equal(shortenedPath, expectedPath);
});
test('_onLineSelected', function() {
var replaceStateStub = sandbox.stub(history, 'replaceState');
var moveStub = sandbox.stub(element.$.cursor, 'moveToLineNumber');
var e = {};
var detail = {number: 123, side: 'right'};
element._onLineSelected(e, detail);
assert.isTrue(moveStub.called);
assert.equal(moveStub.lastCall.args[0], detail.number);
assert.equal(moveStub.lastCall.args[1], detail.side);
assert.isTrue(replaceStateStub.called);
});
test('_getDiffURL encodes special characters', function() {
var changeNum = 123;
var patchRange = {basePatchNum: 123, patchNum: 456};
var path = 'c++/cpp.cpp';
assert.equal(element._getDiffURL(changeNum, patchRange, path),
'/c/123/123..456/c%252B%252B/cpp.cpp');
});
test('_getDiffViewMode', function() {
// No user prefs or change view state set.
assert.equal(element._getDiffViewMode(), 'SIDE_BY_SIDE');
// User prefs but no change view state set.
element._userPrefs = {default_diff_view: 'UNIFIED_DIFF'};
assert.equal(element._getDiffViewMode(), 'UNIFIED_DIFF');
// User prefs and change view state set.
element.changeViewState = {diffMode: 'SIDE_BY_SIDE'};
assert.equal(element._getDiffViewMode(), 'SIDE_BY_SIDE');
});
suite('_loadCommentMap', function() {
test('empty', function(done) {
stub('gr-rest-api-interface', {
getDiffRobotComments: function() { return Promise.resolve({}); },
getDiffComments: function() { return Promise.resolve({}); },
});
element._loadCommentMap().then(function(map) {
assert.equal(Object.keys(map).length, 0);
done();
});
});
test('paths in patch range', function(done) {
stub('gr-rest-api-interface', {
getDiffRobotComments: function() { return Promise.resolve({}); },
getDiffComments: function() {
return Promise.resolve({
'path/to/file/one.cpp': [{patch_set: 3, message: 'lorem'}],
'path-to/file/two.py': [{patch_set: 5, message: 'ipsum'}],
});
},
});
element._changeNum = '42';
element._patchRange = {
basePatchNum: '3',
patchNum: '5',
};
element._loadCommentMap().then(function(map) {
assert.deepEqual(Object.keys(map),
['path/to/file/one.cpp', 'path-to/file/two.py']);
done();
});
});
test('empty for paths outside patch range', function(done) {
stub('gr-rest-api-interface', {
getDiffRobotComments: function() { return Promise.resolve({}); },
getDiffComments: function() {
return Promise.resolve({
'path/to/file/one.cpp': [{patch_set: 'PARENT', message: 'lorem'}],
'path-to/file/two.py': [{patch_set: 2, message: 'ipsum'}],
});
},
});
element._changeNum = '42';
element._patchRange = {
basePatchNum: '3',
patchNum: '5',
};
element._loadCommentMap().then(function(map) {
assert.equal(Object.keys(map).length, 0);
done();
});
});
});
suite('_computeCommentSkips', function() {
test('empty file list', function() {
var commentMap = {
'path/one.jpg': true,
'path/three.wav': true,
};
var path = 'path/two.m4v';
var fileList = [];
var result = element._computeCommentSkips(commentMap, fileList, path);
assert.isNull(result.previous);
assert.isNull(result.next);
});
test('finds skips', function() {
var fileList = ['path/one.jpg', 'path/two.m4v', 'path/three.wav'];
var path = fileList[1];
var commentMap = {};
commentMap[fileList[0]] = true;
commentMap[fileList[1]] = false;
commentMap[fileList[2]] = true;
var result = element._computeCommentSkips(commentMap, fileList, path);
assert.equal(result.previous, fileList[0]);
assert.equal(result.next, fileList[2]);
commentMap[fileList[1]] = true;
result = element._computeCommentSkips(commentMap, fileList, path);
assert.equal(result.previous, fileList[0]);
assert.equal(result.next, fileList[2]);
path = fileList[0];
result = element._computeCommentSkips(commentMap, fileList, path);
assert.isNull(result.previous);
assert.equal(result.next, fileList[1]);
path = fileList[2];
result = element._computeCommentSkips(commentMap, fileList, path);
assert.equal(result.previous, fileList[1]);
assert.isNull(result.next);
});
});
});
</script>