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diff --git a/testing/web-platform/tests/IndexedDB/idbcursor-continuePrimaryKey-exceptions.htm b/testing/web-platform/tests/IndexedDB/idbcursor-continuePrimaryKey-exceptions.htm
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+++ b/testing/web-platform/tests/IndexedDB/idbcursor-continuePrimaryKey-exceptions.htm
@@ -0,0 +1,107 @@
+<!doctype html>
+<meta charset="utf-8" />
+<title>IndexedDB: IDBCursor continuePrimaryKey() exception throwing</title>
+<link rel="help"
+      href="https://w3c.github.io/IndexedDB/#dom-idbcursor-continueprimarykey" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+async_test(function(t) {
+    var dbname = document.location + '-' + t.name;
+    var del = indexedDB.deleteDatabase(dbname);
+    del.onerror = t.unreached_func('deleteDatabase should succeed');
+    var open = indexedDB.open(dbname);
+    open.onerror = t.unreached_func('open should succeed');
+
+    open.onupgradeneeded = t.step_func(function() {
+        var db = open.result;
+        t.add_cleanup(function() {
+            db.close();
+            indexedDB.deleteDatabase(db.name);
+        });
+        var store = db.createObjectStore('store');
+        store.put('a', 1).onerror = t.unreached_func('put should not fail');
+        var request = store.openCursor();
+        request.onerror = t.unreached_func('openCursor should not fail');
+        request.onsuccess = t.step_func(function() {
+            var cursor = request.result;
+            assert_class_string(cursor, 'IDBCursorWithValue',
+                'result should be a cursor');
+
+            assert_throws_dom('InvalidAccessError', function() {
+                cursor.continuePrimaryKey(2, 2);
+            }, 'continuePrimaryKey() should throw if source is not an index');
+        });
+    });
+
+    open.onsuccess = t.step_func(function() {
+        var db = open.result;
+        db.close();
+        t.done();
+    });
+
+}, 'IDBCursor continuePrimaryKey() on object store cursor');
+
+[
+    {
+        direction: 'nextunique',
+        expected_key: 1, expected_primaryKey: 'a',
+        continue_key: 2, continue_primaryKey: 'a'
+    },
+    {
+        direction: 'prevunique',
+        expected_key: 3, expected_primaryKey: 'a',
+        continue_key: 2, continue_primaryKey: 'a'
+    }
+].forEach(function(testcase) {
+    async_test(function(t) {
+        var dbname = document.location + '-' + t.name;
+        var del = indexedDB.deleteDatabase(dbname);
+        del.onerror = t.unreached_func('deleteDatabase should succeed');
+        var open = indexedDB.open(dbname);
+        open.onerror = t.unreached_func('open should succeed');
+
+        open.onupgradeneeded = t.step_func(function() {
+            var db = open.result;
+            t.add_cleanup(function() {
+                db.close();
+                indexedDB.deleteDatabase(db.name);
+            });
+            var store = db.createObjectStore('store', {keyPath: 'pk'});
+            var index = store.createIndex('index', 'ik', {multiEntry: true});
+            store.put({pk: 'a', ik: [1,2,3]}).onerror =
+            t.unreached_func('put should not fail');
+            store.put({pk: 'b', ik: [1,2,3]}).onerror =
+            t.unreached_func('put should not fail');
+            var request = index.openKeyCursor(null, testcase.direction);
+            request.onerror = t.unreached_func('openCursor should not fail');
+            request.onsuccess = t.step_func(function() {
+                var cursor = request.result;
+                assert_class_string(cursor, 'IDBCursor',
+                    'result should be a cursor');
+                assert_equals(cursor.direction, testcase.direction,
+                    'direction should be as specified');
+                assert_equals(cursor.key, testcase.expected_key,
+                    'key should match');
+                assert_equals(cursor.primaryKey, testcase.expected_primaryKey,
+                    'primaryKey should match');
+
+                assert_throws_dom('InvalidAccessError', function() {
+                    cursor.continuePrimaryKey(
+                        testcase.continue_key,
+                        testcase.continue_primaryKey);
+                }, 'continuePrimaryKey() should throw if direction is unique');
+            });
+        });
+
+        open.onsuccess = t.step_func(function() {
+            var db = open.result;
+            db.close();
+            t.done();
+        });
+
+    }, 'IDBCursor continuePrimaryKey() on "' + testcase.direction + '" cursor');
+});
+
+</script>