1 files changed, 87 insertions, 0 deletions
diff --git a/storage/test/unit/test_connection_interrupt.js b/storage/test/unit/test_connection_interrupt.js
new file mode 100644
index 0000000000..cfce1f06d9
--- /dev/null
+++ b/storage/test/unit/test_connection_interrupt.js
@@ -0,0 +1,87 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// This file tests the functionality of mozIStorageAsyncConnection::interrupt.
+
+add_task(async function test_sync_conn() {
+  // Interrupt can only be used on async connections.
+  let db = getOpenedDatabase();
+  Assert.throws(
+    () => db.interrupt(),
+    /NS_ERROR_ILLEGAL_VALUE/,
+    "interrupt() should throw if invoked on a synchronous connection"
+  );
+  db.close();
+});
+
+add_task(async function test_wr_async_conn() {
+  // Interrupt cannot be used on R/W async connections.
+  let db = await openAsyncDatabase(getTestDB());
+  Assert.throws(
+    () => db.interrupt(),
+    /NS_ERROR_ILLEGAL_VALUE/,
+    "interrupt() should throw if invoked on a R/W connection"
+  );
+  await asyncClose(db);
+});
+
+add_task(async function test_closed_conn() {
+  let db = await openAsyncDatabase(getTestDB(), { readOnly: true });
+  await asyncClose(db);
+  Assert.throws(
+    () => db.interrupt(),
+    /NS_ERROR_NOT_INITIALIZED/,
+    "interrupt() should throw if invoked on a closed connection"
+  );
+});
+
+add_task(
+  {
+    // We use a timeout in the test that may be insufficient on Android emulators.
+    // We don't really need the Android coverage, so skip on Android.
+    skip_if: () => AppConstants.platform == "android",
+  },
+  async function test_async_conn() {
+    let db = await openAsyncDatabase(getTestDB(), { readOnly: true });
+    // This query is built to hang forever.
+    let stmt = db.createAsyncStatement(`
+    WITH RECURSIVE test(n) AS (
+      VALUES(1)
+      UNION ALL
+      SELECT n + 1 FROM test
+    )
+    SELECT t.n
+    FROM test,test AS t`);
+
+    let completePromise = new Promise((resolve, reject) => {
+      let listener = {
+        handleResult(aResultSet) {
+          reject();
+        },
+        handleError(aError) {
+          reject();
+        },
+        handleCompletion(aReason) {
+          resolve(aReason);
+        },
+      };
+      stmt.executeAsync(listener);
+      stmt.finalize();
+    });
+
+    // Wait for the statement to be executing.
+    // This is not rock-solid, see the discussion in bug 1320301. A better
+    // approach will be evaluated in a separate bug.
+    await new Promise(resolve => do_timeout(500, resolve));
+
+    db.interrupt();
+
+    Assert.equal(
+      await completePromise,
+      Ci.mozIStorageStatementCallback.REASON_CANCELED,
+      "Should have been canceled"
+    );
+
+    await asyncClose(db);
+  }
+);