1 files changed, 37 insertions, 0 deletions
diff --git a/cli/js/tests/testing_test.ts b/cli/js/tests/testing_test.ts
new file mode 100644
index 000000000..b47eb03e2
--- /dev/null
+++ b/cli/js/tests/testing_test.ts
@@ -0,0 +1,37 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { assertThrows, unitTest } from "./test_util.ts";
+
+unitTest(function testFnOverloading(): void {
+  // just verifying that you can use this test definition syntax
+  Deno.test("test fn overloading", (): void => {});
+});
+
+unitTest(function nameOfTestCaseCantBeEmpty(): void {
+  assertThrows(
+    () => {
+      Deno.test("", () => {});
+    },
+    Error,
+    "The name of test case can't be empty"
+  );
+  assertThrows(
+    () => {
+      Deno.test({
+        name: "",
+        fn: () => {}
+      });
+    },
+    Error,
+    "The name of test case can't be empty"
+  );
+});
+
+unitTest(function testFnCantBeAnonymous(): void {
+  assertThrows(
+    () => {
+      Deno.test(function() {});
+    },
+    Error,
+    "Test function can't be anonymous"
+  );
+});