check URLSearchParams.constructor's params (denoland#2488)

jofrantoba · Jun 10, 2019 · 5871d22 · 5871d22
1 parent a115340
commit 5871d22
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Showing 2 changed files with 18 additions and 5 deletions.
diff --git a/js/url_search_params.ts b/js/url_search_params.ts
@@ -280,11 +280,11 @@ export class URLSearchParams {
     // Overload: sequence<sequence<USVString>>
     for (const tuple of init) {
       // If pair does not contain exactly two items, then throw a TypeError.
-      requiredArguments(
-        "URLSearchParams.constructor tuple array argument",
-        tuple.length,
-        2
-      );
+      if (tuple.length !== 2) {
+        throw new TypeError(
+          "URLSearchParams.constructor tuple array argument must only contain pair elements"
+        );
+      }
       this.append(tuple[0], tuple[1]);
     }
   }

diff --git a/js/url_search_params_test.ts b/js/url_search_params_test.ts
@@ -147,6 +147,19 @@ test(function urlSearchParamsShouldThrowTypeError(): void {
   }
 
   assertEquals(hasThrown, 2);
+
+  try {
+    new URLSearchParams([["1", "2", "3"]]);
+    hasThrown = 1;
+  } catch (err) {
+    if (err instanceof TypeError) {
+      hasThrown = 2;
+    } else {
+      hasThrown = 3;
+    }
+  }
+
+  assertEquals(hasThrown, 2);
 });
 
 test(function urlSearchParamsAppendArgumentsCheck(): void {