refactor(cli/tests/unit) to use assertThrows (#6459)

1 files changed, 3 insertions, 7 deletions

diff --git a/cli/tests/unit/resources_test.ts b/cli/tests/unit/resources_test.ts
index 385905a6e..e4d420055 100644
--- a/cli/tests/unit/resources_test.ts
+++ b/cli/tests/unit/resources_test.ts
@@ -1,14 +1,10 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-import { unitTest, assertEquals, assert } from "./test_util.ts";
+import { unitTest, assertEquals, assert, assertThrows } from "./test_util.ts";
 
 unitTest(function resourcesCloseBadArgs(): void {
-  let err;
-  try {
+  assertThrows(() => {
     Deno.close((null as unknown) as number);
-  } catch (e) {
-    err = e;
-  }
-  assert(err instanceof Deno.errors.InvalidData);
+  }, Deno.errors.InvalidData);
 });
 
 unitTest(function resourcesStdio(): void {