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<!DOCTYPE html>
<html>
<!--
Copyright 2011 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<!--
-->
<head>
<title>Closure Unit Tests - goog.ui.SelectionModel</title>
<script src="../base.js"></script>
<script>
goog.require('goog.testing.jsunit');
goog.require('goog.testing.recordFunction');
goog.require('goog.ui.SelectionModel');
</script>
</head>
<body>
<script>
var selectionModel, items, addedItem, addedItems;
function setUp() {
items = [1, 2, 3, 4];
addedItem = 5;
addedItems = [6, 7, 8];
selectionModel = new goog.ui.SelectionModel(items);
}
function tearDown() {
goog.dispose(selectionModel);
}
/*
* Checks that the selection model returns the correct item count.
*/
function testGetItemCount() {
assertEquals(items.length, selectionModel.getItemCount());
}
/*
* Checks that the correct first element is returned by the selection model.
*/
function testGetFirst() {
assertEquals(items[0], selectionModel.getFirst());
}
/*
* Checks that the correct last element is returned by the selection model.
*/
function testGetLast() {
assertEquals(items[items.length - 1], selectionModel.getLast());
}
/*
* Tests the behavior of goog.ui.SelectionModel.getItemAt(index).
*/
function testGetItemAt() {
goog.array.forEach(items,
function(item, i) {
assertEquals(item, selectionModel.getItemAt(i));
});
}
/*
* Checks that an item can be correctly added to the selection model.
*/
function testAddItem() {
assertEquals(items.length, selectionModel.getItemCount());
selectionModel.addItem(addedItem);
assertEquals(items.length + 1, selectionModel.getItemCount());
assertEquals(addedItem, selectionModel.getLast());
}
/*
* Checks that an item can be added to the selection model at a specific index.
*/
function testAddItemAt() {
assertEquals(items.length, selectionModel.getItemCount());
var insertIndex = 2;
assertEquals(items[insertIndex], selectionModel.getItemAt(insertIndex));
selectionModel.addItemAt(addedItem, insertIndex);
var resultArray = goog.array.clone(items);
goog.array.insertAt(resultArray, addedItem, insertIndex);
assertEquals(items.length + 1, selectionModel.getItemCount());
assertEquals(addedItem, selectionModel.getItemAt(insertIndex));
assertArrayEquals(resultArray, selectionModel.getItems());
}
/*
* Checks that multiple items can be correctly added to the selection model.
*/
function testAddItems() {
assertEquals(items.length, selectionModel.getItemCount());
selectionModel.addItems(addedItems);
assertEquals(items.length + addedItems.length, selectionModel.getItemCount());
var resultArray = goog.array.concat(items, addedItems);
assertArrayEquals(resultArray, selectionModel.getItems());
}
/*
* Checks that all elements can be removed from the selection model.
*/
function testClear() {
assertArrayEquals(items, selectionModel.getItems());
selectionModel.clear();
assertArrayEquals([], selectionModel.getItems());
}
/*
* Checks that all items can be obtained from the selection model.
*/
function testGetItems() {
assertArrayEquals(items, selectionModel.getItems());
};
/*
* Checks that an item's index can be found in the selection model.
*/
function testIndexOfItem() {
goog.array.forEach(items,
function(item, i) {
assertEquals(i, selectionModel.indexOfItem(item));
});
}
/*
* Checks that an item can be removed from the selection model.
*/
function testRemoveItem() {
assertEquals(items.length, selectionModel.getItemCount());
var resultArray = goog.array.clone(items);
goog.array.removeAt(resultArray, 2);
selectionModel.removeItem(items[2]);
assertEquals(items.length - 1, selectionModel.getItemCount());
assertArrayEquals(resultArray, selectionModel.getItems());
}
/*
* Checks that an item at a particular index can be removed from the selection
* model.
*/
function testRemoveItemAt() {
assertEquals(items.length, selectionModel.getItemCount());
var resultArray = goog.array.clone(items);
var removeIndex = 2;
goog.array.removeAt(resultArray, removeIndex);
selectionModel.removeItemAt(removeIndex);
assertEquals(items.length - 1, selectionModel.getItemCount());
assertNotEquals(items[removeIndex], selectionModel.getItemAt(removeIndex));
assertArrayEquals(resultArray, selectionModel.getItems());
}
/*
* Checks that item selection at a particular index works.
*/
function testSelectedIndex() {
// Default selected index is -1
assertEquals(-1, selectionModel.getSelectedIndex());
selectionModel.setSelectedIndex(2);
assertEquals(2, selectionModel.getSelectedIndex());
assertEquals(items[2], selectionModel.getSelectedItem());
}
/*
* Checks that items can be selected in the selection model.
*/
function testSelectedItem() {
assertNull(selectionModel.getSelectedItem());
selectionModel.setSelectedItem(items[1]);
assertNotNull(selectionModel.getSelectedItem());
assertEquals(items[1], selectionModel.getSelectedItem());
assertEquals(1, selectionModel.getSelectedIndex());
}
/*
* Checks that an installed handler is called on selection change.
*/
function testSelectionHandler() {
var myRecordFunction = new goog.testing.recordFunction();
selectionModel.setSelectionHandler(myRecordFunction);
// Select index 2
selectionModel.setSelectedIndex(2);
// De-select 2 and select 3
selectionModel.setSelectedIndex(3);
var recordCalls = myRecordFunction.getCalls();
assertEquals(3, recordCalls.length);
// Calls: Select items[2], de-select items[2], select items[3]
assertArrayEquals([items[2], true], recordCalls[0].getArguments());
assertArrayEquals([items[2], false], recordCalls[1].getArguments());
assertArrayEquals([items[3], true], recordCalls[2].getArguments());
}
</script>
</body>
</html>
|
