1 files changed, 6 insertions, 5 deletions
diff --git a/cli/tests/unit_node/util_test.ts b/cli/tests/unit_node/util_test.ts
index 81794c856..64020141a 100644
--- a/cli/tests/unit_node/util_test.ts
+++ b/cli/tests/unit_node/util_test.ts
@@ -46,8 +46,8 @@ Deno.test({
   name: "[util] isBoolean",
   fn() {
     assert(util.isBoolean(true));
-    assert(util.isBoolean(new Boolean()));
-    assert(util.isBoolean(new Boolean(true)));
+    assert(!util.isBoolean(new Boolean()));
+    assert(!util.isBoolean(new Boolean(true)));
     assert(util.isBoolean(false));
     assert(!util.isBoolean("deno"));
     assert(!util.isBoolean("true"));
@@ -80,7 +80,7 @@ Deno.test({
   name: "[util] isNumber",
   fn() {
     assert(util.isNumber(666));
-    assert(util.isNumber(new Number(666)));
+    assert(!util.isNumber(new Number(666)));
     assert(!util.isNumber("999"));
     assert(!util.isNumber(null));
   },
@@ -90,7 +90,7 @@ Deno.test({
   name: "[util] isString",
   fn() {
     assert(util.isString("deno"));
-    assert(util.isString(new String("DIO")));
+    assert(!util.isString(new String("DIO")));
     assert(!util.isString(1337));
   },
 });
@@ -99,6 +99,7 @@ Deno.test({
   name: "[util] isSymbol",
   fn() {
     assert(util.isSymbol(Symbol()));
+    assert(!util.isSymbol(Object(Symbol())));
     assert(!util.isSymbol(123));
     assert(!util.isSymbol("string"));
   },
@@ -128,7 +129,7 @@ Deno.test({
   name: "[util] isError",
   fn() {
     const java = new Error();
-    const nodejs = new TypeError();
+    const nodejs = Reflect.construct(Error, [], Object);
     const deno = "Future";
     assert(util.isError(java));
     assert(util.isError(nodejs));