1 files changed, 39 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/test/xpcshell/test_bad_json.js b/toolkit/mozapps/extensions/test/xpcshell/test_bad_json.js
new file mode 100644
index 0000000000..f8a473de7f
--- /dev/null
+++ b/toolkit/mozapps/extensions/test/xpcshell/test_bad_json.js
@@ -0,0 +1,39 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+// Tests that we rebuild the database correctly if it contains
+// JSON data that parses correctly but doesn't contain required fields
+
+add_task(async function() {
+  createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "1", "1.9.2");
+
+  await promiseStartupManager();
+
+  const ID = "addon@tests.mozilla.org";
+  await promiseInstallWebExtension({
+    manifest: {
+      version: "2.0",
+      applications: { gecko: { id: ID } },
+    },
+  });
+
+  await promiseShutdownManager();
+
+  // First startup/shutdown finished
+  // Replace the JSON store with something bogus
+  await saveJSON({ not: "what we expect to find" }, gExtensionsJSON.path);
+
+  await promiseStartupManager();
+  // Retrieve an addon to force the database to rebuild
+  let addon = await AddonManager.getAddonByID(ID);
+
+  Assert.equal(addon.id, ID);
+
+  await promiseShutdownManager();
+
+  // Make sure our JSON database has schemaVersion and our installed extension
+  let data = await loadJSON(gExtensionsJSON.path);
+  Assert.ok("schemaVersion" in data);
+  Assert.equal(data.addons[0].id, ID);
+});