diff --git a/fetch/metadata/text.https.html b/fetch/metadata/text.https.html
index 901e9eef8373a0..ba49e2b851f13d 100644
--- a/fetch/metadata/text.https.html
+++ b/fetch/metadata/text.https.html
@@ -8,7 +8,7 @@
 
   promise_test(async t => {
     const key = "text-destination" + token();
-    await import("/fetch/metadata/resources/record-header.py?file=" + key);
+    await import("/fetch/metadata/resources/record-header.py?file=" + key, { with: { type: "text" } });
     const expected = {"site": "same-origin", "user": "", "mode": "cors", "dest": "text"};
     await validate_expectations(key, expected);
   }, "The fetch metadata for text module");
diff --git a/html/semantics/scripting-1/the-script-element/text-module/ignore-content-type.any.js b/html/semantics/scripting-1/the-script-element/text-module/ignore-content-type.any.js
index 2b71b534f29cd3..e2f5cf17acebb9 100644
--- a/html/semantics/scripting-1/the-script-element/text-module/ignore-content-type.any.js
+++ b/html/semantics/scripting-1/the-script-element/text-module/ignore-content-type.any.js
@@ -27,7 +27,6 @@ const content_types = [
   "text/json/json",
 
   // Control Characters and Whitespace - Invalid Type
-  "applic\x00ation/vnd.api+json",     // NULL in type
   "applic\x09ation/vnd.api+json",     // TAB in type
   "applic\x0Aation/vnd.api+json",     // Line Feed in type
   "applic\x0Dation/vnd.api+json",     // Carriage Return in type
@@ -37,7 +36,6 @@ const content_types = [
   "application\x1F/vnd.api+json",     // Unit Separator at end of type
 
   // Control Characters and Whitespace - Invalid Subtype
-  "application/vnd\x00.api+json",     // NULL in subtype
   "application/vnd\x09.api+json",     // TAB in subtype
   "application/vnd\x0A.api+json",     // Line Feed in subtype
   "application/vnd\x0D.api+json",     // Carriage Return in subtype
@@ -106,7 +104,6 @@ const content_types = [
   "applic=ation/vnd=api+json",        // Equals in both
   "申请/中文.api+json",                 // Chinese in both
   "app™/vnd€.api+json",               // Unicode symbols in both
-  "applic\x00ation/vnd\x00api+json",  // NULL in both
   "applic;ation/vnd;api+json",        // Semicolons in both
   "applic{ation/vnd{api+json",        // Left curly brace in both
   "applic}ation/vnd}api+json",        // Right curly brace in both
@@ -120,7 +117,6 @@ const content_types = [
   "application\"/vnd.api+json",       // Quote at end of type
   "application /vnd.api+json",        // Trailing space in type
   "/vnd.api+json",                    // Empty type
-  "app\x00lication/vnd.api+json",     // NULL in middle of type
 
   // Edge Cases - Subtype
   "application/\"vnd.api+json",       // Quote at start of subtype
@@ -132,11 +128,11 @@ const content_types = [
   // Edge Cases - Multiple Invalid Positions
   "\"application\"/\"vnd.api\"+json", // Quotes in multiple positions
   "app(lic)ation/vnd(api)+json",      // Parentheses in multiple positions
-  "application\x00/\x00vnd.api+json",  // NULL in both parts
 ];
 
 for (const content_type of content_types) {
   promise_test(async test => {
-    await import(`./file.txt?pipe=header(Content-Type,${encodeURIComponent(content_type)})`, { with: { type: "text" } });
+    const enc_content_type = encodeURIComponent(content_type.replaceAll(',', '\\,').replaceAll(')', '\\)'));
+    await import(`./file.txt?pipe=header(Content-Type,${enc_content_type})`, { with: { type: "text" } });
   }, `Import of a text module with MIME type ${content_type} should succeed`);
 }
diff --git a/html/semantics/scripting-1/the-script-element/text-module/ignore-extension.any.js b/html/semantics/scripting-1/the-script-element/text-module/ignore-extension.any.js
index a1d6cd31f1c874..350b489a06fa3d 100644
--- a/html/semantics/scripting-1/the-script-element/text-module/ignore-extension.any.js
+++ b/html/semantics/scripting-1/the-script-element/text-module/ignore-extension.any.js
@@ -3,6 +3,6 @@
 for (const name of ["file", "file.js", "file.json", "file.txt"]) {
   promise_test(async t => {
     const result = await import(`./${name}`, { with: { type: "text" } });
-    assert_equals(result, "text file\n");
+    assert_equals(result.default, "text file\n");
   }, `Extension: ${name}`);
 }
diff --git a/html/semantics/scripting-1/the-script-element/text-module/integrity.html b/html/semantics/scripting-1/the-script-element/text-module/integrity.html
index bda5d6958b85b7..1c1060c0089076 100644
--- a/html/semantics/scripting-1/the-script-element/text-module/integrity.html
+++ b/html/semantics/scripting-1/the-script-element/text-module/integrity.html
@@ -12,7 +12,7 @@
 window.mismatchesLog = [];
 window.mismatchesEvents = [];
 </script>
-<script type="module" src="integrity-matches.js" integrity="sha384-kc1K2KFKQhnYE1AdnpmUUpFVnxz1GCgGbQ19e3zmXrZw23rgpwa9il4/pHp7NYWA"  onload="window.matchesEvents.push('load');" onerror="window.matchesEvents.push('error')"></script>
+<script type="module" src="integrity-matches.js" integrity="sha384-pjL0xfAOZ4ZBiE7HXzxD1TkqVgNikOnFFZY3SC2Z4jWAyaP76YUa5VrRInWayN7m"  onload="window.matchesEvents.push('load');" onerror="window.matchesEvents.push('error')"></script>
 <script type="module" src="integrity-mismatches.js" integrity="sha384-doesnotmatch" onload="window.mismatchesEvents.push('load');" onerror="window.mismatchesEvents.push('error')"></script>
 
 <script type="module">
diff --git a/html/semantics/scripting-1/the-script-element/text-module/repeated-imports.any.js b/html/semantics/scripting-1/the-script-element/text-module/repeated-imports.any.js
index 2ebc346dd4c95e..547023157da472 100644
--- a/html/semantics/scripting-1/the-script-element/text-module/repeated-imports.any.js
+++ b/html/semantics/scripting-1/the-script-element/text-module/repeated-imports.any.js
@@ -79,12 +79,12 @@ promise_test(async test => {
     const uuid_token = token();
     // serve-js-then-text.py gives us JS the first time
     const result_js = await import(`./serve-js-then-text.py?key=${uuid_token}`);
-    assert_equals(result_js.default, "hello");
+    assert_equals(result_js.default, "world");
 
     // If this were to do another fetch, the import would fail because
     // serve-js-then-text.py would give us text this time. But, the module map
     // entry for this specifier/module type pair already exists, so we
     // successfully reuse the entry instead of fetching again.
     const result_js_2 = await import(`./serve-js-then-text.py?key=${uuid_token}`);
-    assert_equals(result_js_2.default, "hello");
+    assert_equals(result_js_2.default, "world");
 }, "If an import previously succeeded for a given specifier with no type attribute, future uses of the same values should yield the same result");
diff --git a/html/semantics/scripting-1/the-script-element/text-module/script-element-json-src.html b/html/semantics/scripting-1/the-script-element/text-module/script-element-text-src.html
similarity index 100%
rename from html/semantics/scripting-1/the-script-element/text-module/script-element-json-src.html
rename to html/semantics/scripting-1/the-script-element/text-module/script-element-text-src.html