diff --git a/front_matter/any_test.ts b/front_matter/any_test.ts
index 7fe1ee3eb..6fff316f3 100644
--- a/front_matter/any_test.ts
+++ b/front_matter/any_test.ts
@@ -1,6 +1,5 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-import { test } from "./test.ts";
 import { extract } from "./any.ts";
 import {
   runExtractJsonTests,
@@ -8,20 +7,10 @@ import {
   runExtractTypeErrorTests,
   runExtractYamlTests1,
   runExtractYamlTests2,
-  runTestInvalidInputTests,
-  runTestValidInputTests,
 } from "./_test_utils.ts";
 
 // YAML //
 
-Deno.test("test() handles valid input", () => {
-  runTestValidInputTests("yaml", test);
-});
-
-Deno.test("test() handles invalid input", () => {
-  runTestInvalidInputTests("yaml", test);
-});
-
 Deno.test("extract() extracts type error on invalid input", () => {
   runExtractTypeErrorTests("yaml", extract);
 });
@@ -36,14 +25,6 @@ Deno.test("extract() parses yaml delineate by `---yaml`", async () => {
 
 // JSON //
 
-Deno.test("test() handles valid json input", () => {
-  runTestValidInputTests("json", test);
-});
-
-Deno.test("test() handles invalid json input", () => {
-  runTestInvalidInputTests("json", test);
-});
-
 Deno.test("extract() extracts type error on invalid json input", () => {
   runExtractTypeErrorTests("json", extract);
 });
@@ -54,14 +35,6 @@ Deno.test("extract() parses json delineate by ---json", async () => {
 
 // TOML //
 
-Deno.test("test() test valid input true", () => {
-  runTestValidInputTests("toml", test);
-});
-
-Deno.test("test() handles invalid toml input false", () => {
-  runTestInvalidInputTests("toml", test);
-});
-
 Deno.test("extract() extracts type error on invalid toml input", () => {
   runExtractTypeErrorTests("toml", extract);
 });
diff --git a/front_matter/json_test.ts b/front_matter/json_test.ts
index ad63ffec3..9859ffb74 100644
--- a/front_matter/json_test.ts
+++ b/front_matter/json_test.ts
@@ -1,23 +1,12 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-import { test } from "./test.ts";
 import { extract } from "./json.ts";
 import {
   runExtractJsonTests,
   runExtractTypeErrorTests,
-  runTestInvalidInputTests,
-  runTestValidInputTests,
 } from "./_test_utils.ts";
 import { assertEquals } from "@std/assert/equals";
 
-Deno.test("test() handles valid input", () => {
-  runTestValidInputTests("json", test);
-});
-
-Deno.test("test() handles invalid input", () => {
-  runTestInvalidInputTests("json", test);
-});
-
 Deno.test("json() extracts type error on invalid input", () => {
   runExtractTypeErrorTests("json", extract);
 });
diff --git a/front_matter/toml_test.ts b/front_matter/toml_test.ts
index e8f6c1a6f..a96e79046 100644
--- a/front_matter/toml_test.ts
+++ b/front_matter/toml_test.ts
@@ -1,24 +1,13 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-import { test } from "./test.ts";
 import { extract } from "./toml.ts";
 import {
   runExtractTomlTests,
   runExtractTomlTests2,
   runExtractTypeErrorTests,
-  runTestInvalidInputTests,
-  runTestValidInputTests,
 } from "./_test_utils.ts";
 import { assertEquals } from "@std/assert/equals";
 
-Deno.test("toml() tests valid input true", () => {
-  runTestValidInputTests("toml", test);
-});
-
-Deno.test("toml() tests invalid input false", () => {
-  runTestInvalidInputTests("toml", test);
-});
-
 Deno.test("toml() extracts type error on invalid input", () => {
   runExtractTypeErrorTests("toml", extract);
 });
diff --git a/front_matter/yaml_test.ts b/front_matter/yaml_test.ts
index ced52543c..41d7e793e 100644
--- a/front_matter/yaml_test.ts
+++ b/front_matter/yaml_test.ts
@@ -1,24 +1,13 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
-import { test } from "./test.ts";
 import { extract } from "./yaml.ts";
 import {
   runExtractTypeErrorTests,
   runExtractYamlTests1,
   runExtractYamlTests2,
-  runTestInvalidInputTests,
-  runTestValidInputTests,
 } from "./_test_utils.ts";
 import { assertEquals } from "@std/assert/equals";
 
-Deno.test("yaml() tests valid input true", () => {
-  runTestValidInputTests("yaml", test);
-});
-
-Deno.test("yaml() tests invalid input false", () => {
-  runTestInvalidInputTests("yaml", test);
-});
-
 Deno.test("yaml() extracts type error on invalid input", () => {
   runExtractTypeErrorTests("yaml", extract);
 });