1 files changed, 114 insertions, 0 deletions
diff --git a/packages/idb-bridge/src/idb-wpt-ported/cursor-overloads.test.ts b/packages/idb-bridge/src/idb-wpt-ported/cursor-overloads.test.ts
new file mode 100644
index 000000000..2f1797a6f
--- /dev/null
+++ b/packages/idb-bridge/src/idb-wpt-ported/cursor-overloads.test.ts
@@ -0,0 +1,114 @@
+import test from "ava";
+import { BridgeIDBCursor } from "..";
+import { BridgeIDBCursorWithValue } from "../bridge-idb";
+import { createdb } from "./wptsupport";
+
+// Validate the overloads of IDBObjectStore.openCursor(), IDBIndex.openCursor() and IDBIndex.openKeyCursor()
+test.cb("WPT test cursor-overloads.htm", (t) => {
+  var db: any, trans: any, store: any, index: any;
+
+  var request = createdb(t);
+  request.onupgradeneeded = function (e) {
+    db = request.result;
+    store = db.createObjectStore("store");
+    index = store.createIndex("index", "value");
+    store.put({ value: 0 }, 0);
+    trans = request.transaction;
+    trans.oncomplete = verifyOverloads;
+  };
+
+  function verifyOverloads() {
+    trans = db.transaction("store");
+    store = trans.objectStore("store");
+    index = store.index("index");
+
+    checkCursorDirection("store.openCursor()", "next");
+    checkCursorDirection("store.openCursor(0)", "next");
+    checkCursorDirection("store.openCursor(0, 'next')", "next");
+    checkCursorDirection("store.openCursor(0, 'nextunique')", "nextunique");
+    checkCursorDirection("store.openCursor(0, 'prev')", "prev");
+    checkCursorDirection("store.openCursor(0, 'prevunique')", "prevunique");
+
+    checkCursorDirection("store.openCursor(IDBKeyRange.only(0))", "next");
+    checkCursorDirection(
+      "store.openCursor(IDBKeyRange.only(0), 'next')",
+      "next",
+    );
+    checkCursorDirection(
+      "store.openCursor(IDBKeyRange.only(0), 'nextunique')",
+      "nextunique",
+    );
+    checkCursorDirection(
+      "store.openCursor(IDBKeyRange.only(0), 'prev')",
+      "prev",
+    );
+    checkCursorDirection(
+      "store.openCursor(IDBKeyRange.only(0), 'prevunique')",
+      "prevunique",
+    );
+
+    checkCursorDirection("index.openCursor()", "next");
+    checkCursorDirection("index.openCursor(0)", "next");
+    checkCursorDirection("index.openCursor(0, 'next')", "next");
+    checkCursorDirection("index.openCursor(0, 'nextunique')", "nextunique");
+    checkCursorDirection("index.openCursor(0, 'prev')", "prev");
+    checkCursorDirection("index.openCursor(0, 'prevunique')", "prevunique");
+
+    checkCursorDirection("index.openCursor(IDBKeyRange.only(0))", "next");
+    checkCursorDirection(
+      "index.openCursor(IDBKeyRange.only(0), 'next')",
+      "next",
+    );
+    checkCursorDirection(
+      "index.openCursor(IDBKeyRange.only(0), 'nextunique')",
+      "nextunique",
+    );
+    checkCursorDirection(
+      "index.openCursor(IDBKeyRange.only(0), 'prev')",
+      "prev",
+    );
+    checkCursorDirection(
+      "index.openCursor(IDBKeyRange.only(0), 'prevunique')",
+      "prevunique",
+    );
+
+    checkCursorDirection("index.openKeyCursor()", "next");
+    checkCursorDirection("index.openKeyCursor(0)", "next");
+    checkCursorDirection("index.openKeyCursor(0, 'next')", "next");
+    checkCursorDirection("index.openKeyCursor(0, 'nextunique')", "nextunique");
+    checkCursorDirection("index.openKeyCursor(0, 'prev')", "prev");
+    checkCursorDirection("index.openKeyCursor(0, 'prevunique')", "prevunique");
+
+    checkCursorDirection("index.openKeyCursor(IDBKeyRange.only(0))", "next");
+    checkCursorDirection(
+      "index.openKeyCursor(IDBKeyRange.only(0), 'next')",
+      "next",
+    );
+    checkCursorDirection(
+      "index.openKeyCursor(IDBKeyRange.only(0), 'nextunique')",
+      "nextunique",
+    );
+    checkCursorDirection(
+      "index.openKeyCursor(IDBKeyRange.only(0), 'prev')",
+      "prev",
+    );
+    checkCursorDirection(
+      "index.openKeyCursor(IDBKeyRange.only(0), 'prevunique')",
+      "prevunique",
+    );
+
+    t.end();
+  }
+
+  function checkCursorDirection(statement: string, direction: string) {
+    request = eval(statement);
+    request.onsuccess = function (event: any) {
+      t.notDeepEqual(event.target.result, null, "Check the result is not null");
+      t.deepEqual(
+        event.target.result.direction,
+        direction,
+        "Check the result direction",
+      );
+    };
+  }
+});