<!DOCTYPE html>
<title>IDBCursor direction - index</title>
<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
<link rel=help href="http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#cursor-iteration-operation">
<link rel=assert title='If direction is "next", let found record be the first record in records which satisfy all of the following requirements'>
<link rel=assert title="If position is defined, and source is an object store, the record's key is greater than position.">
<link rel=assert title='If direction is "prev", let found record be the last record in records which satisfy all of the following requirements'>
<link rel=assert title="If position is defined, and source is an object store, the record's key is less than position.">
<link rel=assert title="Set cursor's position to found record's key. If source is an index, set cursor's object store position to found record's value.">
<link rel=assert title="Set cursor's key to found record's key.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support.js"></script>
<script>
var records = [ "Alice", "Bob", "Bob", "Greg" ];
var directions = ["next", "prev", "nextunique", "prevunique"];
var tests = {};
directions.forEach(function(dir) {
tests[dir] = async_test(document.title + ' - ' + dir);
});
var open_rq = indexedDB.open("testdb-" + new Date().getTime() + Math.random());
open_rq.onupgradeneeded = function(e) {
var objStore = e.target.result.createObjectStore("test");
objStore.createIndex("idx", "name");
for (var i = 0; i < records.length; i++)
objStore.add({ name: records[i] }, i);
};
open_rq.onsuccess = function(e) {
var db = e.target.result;
db.onerror = fail_helper("db.onerror");
// The tests
testdir('next', ['Alice:0', 'Bob:1', 'Bob:2', 'Greg:3']);
testdir('prev', ['Greg:3', 'Bob:2', 'Bob:1', 'Alice:0']);
testdir('nextunique', ['Alice:0', 'Bob:1', 'Greg:3']);
testdir('prevunique', ['Greg:3', 'Bob:1', 'Alice:0']);
// Test function
function testdir(dir, expect) {
var count = 0;
var t = tests[dir];
var rq = db.transaction("test").objectStore("test").index("idx").openCursor(undefined, dir);
rq.onsuccess = t.step_func(function(e) {
var cursor = e.target.result;
if (!cursor) {
assert_equals(count, expect.length, "cursor runs");
t.done();
}
assert_equals(cursor.value.name + ":" + cursor.primaryKey, expect[count], "cursor.value");
count++;
cursor.continue();
});
rq.onerror = t.step_func(function(e) {
e.preventDefault();
e.stopPropagation();
assert_unreached("rq.onerror - " + e.message);
});
}
};
// Fail handling
function fail_helper(name) {
return function() {
directions.forEach(function(dir) {
tests[dir].step(function() { assert_unreached(name); });
});
};
}
open_rq.onblocked = fail_helper('open_rq.onblocked');
open_rq.onerror = fail_helper('open_rq.onerror');
</script>
<div id=log> </div>