1 files changed, 108 insertions, 0 deletions
diff --git a/dom/indexedDB/test/unit/test_transaction_abort_hang.js b/dom/indexedDB/test/unit/test_transaction_abort_hang.js
new file mode 100644
index 0000000000..6a2c61128b
--- /dev/null
+++ b/dom/indexedDB/test/unit/test_transaction_abort_hang.js
@@ -0,0 +1,108 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+"use strict";
+
+var self = this;
+
+/* exported testGenerator */
+var testGenerator = testSteps();
+
+function* testSteps() {
+  const dbName = self.window
+    ? window.location.pathname
+    : "test_transaction_abort_hang";
+  const objStoreName = "foo";
+  const transactionCount = 30;
+
+  let completedTransactionCount = 0;
+  let caughtError = false;
+
+  let abortedTransactionIndex = Math.floor(transactionCount / 2);
+  if (abortedTransactionIndex % 2 == 0) {
+    abortedTransactionIndex++;
+  }
+
+  let request = indexedDB.open(dbName, 1);
+  request.onerror = errorHandler;
+  request.onupgradeneeded = grabEventAndContinueHandler;
+  let event = yield undefined;
+
+  request.result.createObjectStore(objStoreName, { autoIncrement: true });
+
+  request.onupgradeneeded = null;
+  request.onsuccess = grabEventAndContinueHandler;
+  event = yield undefined;
+
+  let db = event.target.result;
+
+  for (let i = 0; i < transactionCount; i++) {
+    const readonly = i % 2 == 0;
+    const mode = readonly ? "readonly" : "readwrite";
+
+    let transaction = db.transaction(objStoreName, mode);
+
+    if (i == transactionCount - 1) {
+      // Last one, finish the test.
+      transaction.oncomplete = grabEventAndContinueHandler;
+    } else if (i == abortedTransactionIndex - 1) {
+      transaction.oncomplete = function (event) {
+        ok(
+          true,
+          "Completed transaction " +
+            ++completedTransactionCount +
+            " (We may hang after this!)"
+        );
+      };
+    } else if (i == abortedTransactionIndex) {
+      // Special transaction that we abort outside the normal event flow.
+      transaction.onerror = function (event) {
+        ok(
+          true,
+          "Aborted transaction " +
+            ++completedTransactionCount +
+            " (We didn't hang!)"
+        );
+        is(
+          event.target.error.name,
+          "AbortError",
+          "AbortError set as the error on the request"
+        );
+        is(
+          event.target.transaction.error,
+          null,
+          "No error set on the transaction"
+        );
+        ok(!caughtError, "Haven't seen the error event yet");
+        caughtError = true;
+        event.preventDefault();
+      };
+      // This has to happen after the we return to the event loop but before the
+      // transaction starts running.
+      executeSoon(function () {
+        transaction.abort();
+      });
+    } else {
+      transaction.oncomplete = function (event) {
+        ok(true, "Completed transaction " + ++completedTransactionCount);
+      };
+    }
+
+    if (readonly) {
+      transaction.objectStore(objStoreName).get(0);
+    } else {
+      try {
+        transaction.objectStore(objStoreName).add({});
+      } catch (e) {}
+    }
+  }
+  ok(true, "Created all transactions");
+
+  event = yield undefined;
+
+  ok(true, "Completed transaction " + ++completedTransactionCount);
+  ok(caughtError, "Caught the error event when we aborted the transaction");
+
+  finishTest();
+}