5 files changed, 61 insertions, 3 deletions
diff --git a/cli/tests/unit/blob_test.ts b/cli/tests/unit/blob_test.ts
index f9e506334..ebb91658a 100644
--- a/cli/tests/unit/blob_test.ts
+++ b/cli/tests/unit/blob_test.ts
@@ -1,5 +1,10 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-import { assert, assertEquals, unitTest } from "./test_util.ts";
+import {
+  assert,
+  assertEquals,
+  assertStringIncludes,
+  unitTest,
+} from "./test_util.ts";
 import { concat } from "../../../test_util/std/bytes/mod.ts";
 
 unitTest(function blobString(): void {
@@ -104,3 +109,12 @@ unitTest(function blobConstructorNameIsBlob(): void {
   const blob = new Blob();
   assertEquals(blob.constructor.name, "Blob");
 });
+
+unitTest(function blobCustomInspectFunction(): void {
+  const blob = new Blob();
+  assertEquals(
+    Deno.inspect(blob),
+    `Blob { size: 0, type: "" }`,
+  );
+  assertStringIncludes(Deno.inspect(Blob.prototype), "Blob");
+});
diff --git a/cli/tests/unit/dom_exception_test.ts b/cli/tests/unit/dom_exception_test.ts
new file mode 100644
index 000000000..ea310fc9a
--- /dev/null
+++ b/cli/tests/unit/dom_exception_test.ts
@@ -0,0 +1,10 @@
+import { assertEquals, assertStringIncludes, unitTest } from "./test_util.ts";
+
+unitTest(function customInspectFunction(): void {
+  const blob = new DOMException("test");
+  assertEquals(
+    Deno.inspect(blob),
+    `DOMException: test`,
+  );
+  assertStringIncludes(Deno.inspect(DOMException.prototype), "DOMException");
+});
diff --git a/cli/tests/unit/performance_test.ts b/cli/tests/unit/performance_test.ts
index 156841165..94af0731c 100644
--- a/cli/tests/unit/performance_test.ts
+++ b/cli/tests/unit/performance_test.ts
@@ -2,6 +2,7 @@
 import {
   assert,
   assertEquals,
+  assertStringIncludes,
   assertThrows,
   deferred,
   unitTest,
@@ -81,6 +82,32 @@ unitTest(function performanceMeasure() {
   });
 });
 
+unitTest(function performanceCustomInspectFunction(): void {
+  assertStringIncludes(Deno.inspect(performance), "Performance");
+  assertStringIncludes(
+    Deno.inspect(Performance.prototype),
+    "Performance",
+  );
+});
+
+unitTest(function performanceMarkCustomInspectFunction(): void {
+  const mark1 = performance.mark("mark1");
+  assertStringIncludes(Deno.inspect(mark1), "PerformanceMark");
+  assertStringIncludes(
+    Deno.inspect(PerformanceMark.prototype),
+    "PerformanceMark",
+  );
+});
+
+unitTest(function performanceMeasureCustomInspectFunction(): void {
+  const measure1 = performance.measure("measure1");
+  assertStringIncludes(Deno.inspect(measure1), "PerformanceMeasure");
+  assertStringIncludes(
+    Deno.inspect(PerformanceMeasure.prototype),
+    "PerformanceMeasure",
+  );
+});
+
 unitTest(function performanceIllegalConstructor() {
   assertThrows(() => new Performance(), TypeError, "Illegal constructor");
   assertEquals(Performance.length, 0);
diff --git a/cli/tests/unit/request_test.ts b/cli/tests/unit/request_test.ts
index 7a3322daa..dca9e4a73 100644
--- a/cli/tests/unit/request_test.ts
+++ b/cli/tests/unit/request_test.ts
@@ -1,5 +1,5 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-import { assertEquals, unitTest } from "./test_util.ts";
+import { assertEquals, assertStringIncludes, unitTest } from "./test_util.ts";
 
 unitTest(async function fromInit(): Promise<void> {
   const req = new Request("http://foo/", {
@@ -66,4 +66,5 @@ unitTest(function customInspectFunction(): void {
   url: "https://example.com/"
 }`,
   );
+  assertStringIncludes(Deno.inspect(Request.prototype), "Request");
 });
diff --git a/cli/tests/unit/response_test.ts b/cli/tests/unit/response_test.ts
index 7e444fd83..1faf8991a 100644
--- a/cli/tests/unit/response_test.ts
+++ b/cli/tests/unit/response_test.ts
@@ -1,5 +1,10 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-import { assert, assertEquals, unitTest } from "./test_util.ts";
+import {
+  assert,
+  assertEquals,
+  assertStringIncludes,
+  unitTest,
+} from "./test_util.ts";
 
 unitTest(async function responseText() {
   const response = new Response("hello world");
@@ -67,4 +72,5 @@ unitTest(function customInspectFunction(): void {
   url: ""
 }`,
   );
+  assertStringIncludes(Deno.inspect(Response.prototype), "Response");
 });