1 files changed, 118 insertions, 0 deletions
diff --git a/dom/indexedDB/test/unit/test_cursor_mutation.js b/dom/indexedDB/test/unit/test_cursor_mutation.js
new file mode 100644
index 000000000..13e859891
--- /dev/null
+++ b/dom/indexedDB/test/unit/test_cursor_mutation.js
@@ -0,0 +1,118 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+var testGenerator = testSteps();
+
+function testSteps()
+{
+  const objectStoreData = [
+    // This one will be removed.
+    { ss: "237-23-7732", name: "Bob" },
+
+    // These will always be included.
+    { ss: "237-23-7733", name: "Ann" },
+    { ss: "237-23-7734", name: "Ron" },
+    { ss: "237-23-7735", name: "Sue" },
+    { ss: "237-23-7736", name: "Joe" },
+
+    // This one will be added.
+    { ss: "237-23-7737", name: "Pat" }
+  ];
+
+  // Post-add and post-remove data ordered by name.
+  const objectStoreDataNameSort = [ 1, 4, 5, 2, 3 ];
+
+  let request = indexedDB.open(this.window ? window.location.pathname : "Splendid Test", 1);
+  request.onerror = errorHandler;
+  request.onupgradeneeded = grabEventAndContinueHandler;
+  let event = yield undefined;
+
+  let db = event.target.result;
+  event.target.onsuccess = continueToNextStep;
+
+  let objectStore = db.createObjectStore("foo", { keyPath: "ss" });
+  objectStore.createIndex("name", "name", { unique: true });
+
+  for (let i = 0; i < objectStoreData.length - 1; i++) {
+    objectStore.add(objectStoreData[i]);
+  }
+  yield undefined;
+
+  let count = 0;
+
+  let sawAdded = false;
+  let sawRemoved = false;
+
+  db.transaction("foo").objectStore("foo").openCursor().onsuccess =
+    function(event) {
+      event.target.transaction.oncomplete = continueToNextStep;
+      let cursor = event.target.result;
+      if (cursor) {
+        if (cursor.value.name == objectStoreData[0].name) {
+          sawRemoved = true;
+        }
+        if (cursor.value.name ==
+            objectStoreData[objectStoreData.length - 1].name) {
+          sawAdded = true;
+        }
+        cursor.continue();
+        count++;
+      }
+    };
+  yield undefined;
+
+  is(count, objectStoreData.length - 1, "Good initial count");
+  is(sawAdded, false, "Didn't see item that is about to be added");
+  is(sawRemoved, true, "Saw item that is about to be removed");
+
+  count = 0;
+  sawAdded = false;
+  sawRemoved = false;
+
+  db.transaction("foo", "readwrite").objectStore("foo")
+    .index("name").openCursor().onsuccess = function(event) {
+      event.target.transaction.oncomplete = continueToNextStep;
+      let cursor = event.target.result;
+      if (cursor) {
+        if (cursor.value.name == objectStoreData[0].name) {
+          sawRemoved = true;
+        }
+        if (cursor.value.name ==
+            objectStoreData[objectStoreData.length - 1].name) {
+          sawAdded = true;
+        }
+
+        is(cursor.value.name,
+           objectStoreData[objectStoreDataNameSort[count++]].name,
+           "Correct name");
+
+        if (count == 1) {
+          let objectStore = event.target.transaction.objectStore("foo");
+          objectStore.delete(objectStoreData[0].ss)
+                     .onsuccess = function(event) {
+            objectStore.add(objectStoreData[objectStoreData.length - 1])
+                       .onsuccess =
+              function(event) {
+                cursor.continue();
+              };
+          };
+        }
+        else {
+          cursor.continue();
+        }
+      }
+    };
+  yield undefined;
+
+  is(count, objectStoreData.length - 1, "Good final count");
+  is(sawAdded, true, "Saw item that was added");
+  is(sawRemoved, false, "Didn't see item that was removed");
+
+  finishTest();
+
+  objectStore = null; // Bug 943409 workaround.
+
+  yield undefined;
+}