1 files changed, 47 insertions, 0 deletions
diff --git a/dom/cache/test/mochitest/test_cache_put_reorder.js b/dom/cache/test/mochitest/test_cache_put_reorder.js
new file mode 100644
index 0000000000..c5875c2c9d
--- /dev/null
+++ b/dom/cache/test/mochitest/test_cache_put_reorder.js
@@ -0,0 +1,47 @@
+/* global context testDone:true */
+
+var name = "putreorder" + context;
+var c;
+
+var reqs = [
+  "//mochi.test:8888/?foo" + context,
+  "//mochi.test:8888/?bar" + context,
+  "//mochi.test:8888/?baz" + context,
+];
+
+caches
+  .open(name)
+  .then(function (cache) {
+    c = cache;
+    return c.addAll(reqs);
+  })
+  .then(function () {
+    return c.put(reqs[1], new Response("overwritten"));
+  })
+  .then(function () {
+    return c.keys();
+  })
+  .then(function (keys) {
+    is(keys.length, 3, "Correct number of entries expected");
+    ok(keys[0].url.includes(reqs[0]), "The first entry should be untouched");
+    ok(
+      keys[2].url.includes(reqs[1]),
+      "The second entry should be moved to the end"
+    );
+    ok(
+      keys[1].url.includes(reqs[2]),
+      "The third entry should now be the second one"
+    );
+    return c.match(reqs[1]);
+  })
+  .then(function (r) {
+    return r.text();
+  })
+  .then(function (body) {
+    is(body, "overwritten", "The body should be overwritten");
+    return caches.delete(name);
+  })
+  .then(function (deleted) {
+    ok(deleted, "The cache should be deleted successfully");
+    testDone();
+  });