1 files changed, 63 insertions, 0 deletions
diff --git a/packages/idb-bridge/src/idb-wpt-ported/idbfactory-cmp.test.ts b/packages/idb-bridge/src/idb-wpt-ported/idbfactory-cmp.test.ts
new file mode 100644
index 000000000..c7a25a46b
--- /dev/null
+++ b/packages/idb-bridge/src/idb-wpt-ported/idbfactory-cmp.test.ts
@@ -0,0 +1,63 @@
+import test from "ava";
+import { createdb, idbFactory } from "./wptsupport";
+
+test("WPT idbfactory-cmp*.html", async (t) => {
+  const indexedDB = idbFactory;
+  var greater = indexedDB.cmp(2, 1);
+  var equal = indexedDB.cmp(2, 2);
+  var less = indexedDB.cmp(1, 2);
+
+  t.deepEqual(greater, 1, "greater");
+  t.deepEqual(equal, 0, "equal");
+  t.deepEqual(less, -1, "less");
+
+  t.throws(
+    () => {
+      // @ts-expect-error
+      indexedDB.cmp();
+    },
+    { instanceOf: TypeError },
+  );
+
+  t.throws(
+    () => {
+      indexedDB.cmp(null, null);
+    },
+    { name: "DataError" },
+  );
+
+  t.throws(
+    () => {
+      indexedDB.cmp(1, null);
+    },
+    { name: "DataError" },
+  );
+
+  t.throws(
+    () => {
+      indexedDB.cmp(null, 1);
+    },
+    { name: "DataError" },
+  );
+
+  t.throws(
+    () => {
+      indexedDB.cmp(NaN, NaN);
+    },
+    { name: "DataError" },
+  );
+
+  t.throws(
+    () => {
+      indexedDB.cmp(1, NaN);
+    },
+    { name: "DataError" },
+  );
+
+  t.throws(
+    () => {
+      indexedDB.cmp(NaN, 1);
+    },
+    { name: "DataError" },
+  );
+});