1 files changed, 37 insertions, 0 deletions
diff --git a/dom/localstorage/test/unit/test_migration_emptyValue.js b/dom/localstorage/test/unit/test_migration_emptyValue.js
new file mode 100644
index 0000000000..dd09c82e88
--- /dev/null
+++ b/dom/localstorage/test/unit/test_migration_emptyValue.js
@@ -0,0 +1,37 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+add_task(async function testSteps() {
+  const data = {
+    key: "foo",
+    value: "",
+  };
+
+  info("Clearing");
+
+  let request = clear();
+  await requestFinished(request);
+
+  info("Installing package");
+
+  // The profile contains storage.sqlite and webappsstore.sqlite.
+  // The archive migration_emptyValue_profile.zip was created by running
+  // make_migration_emptyValue.js locally, specifically the special test was
+  // temporarily activated in xpcshell.ini and then it was run as:
+  // mach test --interactive dom/localstorage/test/unit/make_migration_emptyValue.js
+  // Before packaging, additional manual steps are needed:
+  // 1. Folder "cache2" is removed.
+  // 2. Folder "crashes" is removed.
+  // 3. File "mozinfo.json" is removed.
+  installPackage("migration_emptyValue_profile");
+
+  info("Getting storage");
+
+  const storage = getLocalStorage();
+
+  info("Verifying data");
+
+  is(storage.getItem(data.key), data.value, "Correct value");
+});