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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/IndexedDB/idbcursor_continue_delete_objectstore.htm | |
| parent | Initial commit. (diff) | |
| download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip | |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/IndexedDB/idbcursor_continue_delete_objectstore.htm')
| -rw-r--r-- | testing/web-platform/tests/IndexedDB/idbcursor_continue_delete_objectstore.htm | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/testing/web-platform/tests/IndexedDB/idbcursor_continue_delete_objectstore.htm b/testing/web-platform/tests/IndexedDB/idbcursor_continue_delete_objectstore.htm new file mode 100644 index 0000000000..86b4abf113 --- /dev/null +++ b/testing/web-platform/tests/IndexedDB/idbcursor_continue_delete_objectstore.htm @@ -0,0 +1,114 @@ +<!DOCTYPE html> +<title>IDBObjectStore.delete() and IDBCursor.continue() - object store - remove a record from the object store while iterating cursor</title> +<link rel="author" title="Mozilla" href="https://www.mozilla.org"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/support.js"></script> + +<script> + /* The goal here is to test that any prefetching of cursor values performs + * correct invalidation of prefetched data. This test is motivated by the + * particularities of the Firefox implementation of preloading, and is + * specifically motivated by an edge case when prefetching prefetches at + * least 2 extra records and at most determines whether a mutation is + * potentially relevant based on current cursor position and direction and + * does not test for key equivalence. Future implementations may want to + * help refine this test if their cursors are more clever. + * + * Step-wise we: + * - Open a cursor, returning key 0. + * - When the cursor request completes, without yielding control: + * - Issue a delete() call that won't actually delete anything but looks + * relevant. This should purge prefetched records 1 and 2. + * - Issue a continue() which should result in record 1 being fetched + * again and record 2 being prefetched again. + * - Delete record 2. Unless there's a synchronously available source + * of truth, the data from continue() above will not be present and + * we'll expect the implementation to need to set a flag to invalidate + * the prefetched data when it arrives. + * - When the cursor request completes, validate we got record 1 and issue + * a continue. + * - When the request completes, we should have a null cursor result value + * because 2 was deleted. + */ + var db, + count = 0, + t = async_test(), + records = [ { pKey: "primaryKey_0" }, + { pKey: "primaryKey_1" }, + { pKey: "primaryKey_2" } ]; + + // This is a key that is not present in the database, but that is known to + // be relevant to a forward iteration of the above keys by comparing to be + // greater than all of them. + var plausibleFutureKey = "primaryKey_9"; + + var open_rq = createdb(t); + open_rq.onupgradeneeded = function(e) { + db = e.target.result; + + var objStore = db.createObjectStore("test", { keyPath: "pKey" }); + + for (var i = 0; i < records.length; i++) + objStore.add(records[i]); + }; + + open_rq.onsuccess = t.step_func(CursorDeleteRecord); + + + function CursorDeleteRecord(e) { + var txn = db.transaction("test", "readwrite", {durability: 'relaxed'}), + object_store = txn.objectStore("test"), + cursor_rq = object_store.openCursor(); + + var iteration = 0; + + cursor_rq.onsuccess = t.step_func(function(e) { + var cursor = e.target.result; + + switch (iteration) { + case 0: + object_store.delete(plausibleFutureKey); + assert_true(cursor != null, "cursor valid"); + assert_equals(cursor.value.pKey, records[iteration].pKey); + cursor.continue(); + object_store.delete(records[2].pKey); + break; + case 1: + assert_true(cursor != null, "cursor valid"); + assert_equals(cursor.value.pKey, records[iteration].pKey); + cursor.continue(); + break; + case 2: + assert_equals(cursor, null, "cursor no longer valid"); + break; + }; + iteration++; + }); + + txn.oncomplete = t.step_func(VerifyRecordWasDeleted); + } + + + function VerifyRecordWasDeleted(e) { + var cursor_rq = db.transaction("test", "readonly", {durability: 'relaxed'}) + .objectStore("test") + .openCursor(); + + cursor_rq.onsuccess = t.step_func(function(e) { + var cursor = e.target.result; + + if (!cursor) { + assert_equals(count, 2, 'count'); + t.done(); + } + + assert_equals(cursor.value.pKey, records[count].pKey); + count++; + cursor.continue(); + }); + } + +</script> + +<div id="log"></div> |