1 files changed, 19 insertions, 0 deletions
diff --git a/toolkit/components/places/tests/migration/test_current_from_downgraded.js b/toolkit/components/places/tests/migration/test_current_from_downgraded.js
new file mode 100644
index 000000000..6d36cab14
--- /dev/null
+++ b/toolkit/components/places/tests/migration/test_current_from_downgraded.js
@@ -0,0 +1,19 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(function* setup() {
+  yield setupPlacesDatabase(`places_v${CURRENT_SCHEMA_VERSION}.sqlite`);
+  // Downgrade the schema version to the first supported one.
+  let path = OS.Path.join(OS.Constants.Path.profileDir, DB_FILENAME);
+  let db = yield Sqlite.openConnection({ path: path });
+  yield db.setSchemaVersion(FIRST_UPGRADABLE_SCHEMA_VERSION);
+  yield db.close();
+});
+
+add_task(function* database_is_valid() {
+  Assert.equal(PlacesUtils.history.databaseStatus,
+               PlacesUtils.history.DATABASE_STATUS_UPGRADED);
+
+  let db = yield PlacesUtils.promiseDBConnection();
+  Assert.equal((yield db.getSchemaVersion()), CURRENT_SCHEMA_VERSION);
+});