1 files changed, 52 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/charset-01.html b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/charset-01.html
new file mode 100644
index 0000000000..7cd4916309
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/charset-01.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Root module scripts should always use UTF-8</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script type="module" src="../serve-with-content-type.py?fn=external-script-utf8.js&ct=text/javascript&dummy=1"></script>
+<script type="module">
+test(function() {
+  assert_equals(window.getSomeString(), "śćążź",
+                'Should be decoded as UTF-8');
+}, 'UTF-8 module script');
+</script>
+
+<script type="module" src="../serve-with-content-type.py?fn=external-script-utf8.js&ct=text/javascript&dummy=2" charset="windows-1250"></script>
+<script type="module">
+test(function() {
+  assert_equals(window.getSomeString(), "śćążź",
+                'Should be decoded as UTF-8');
+}, 'UTF-8 module script with wrong charset in attribute');
+</script>
+
+<script type="module" src="../serve-with-content-type.py?fn=external-script-utf8.js&ct=text/javascript%3Bcharset=windows-1250&dummy=3"></script>
+<script type="module">
+test(function() {
+  assert_equals(window.getSomeString(), "śćążź",
+                'Should be decoded as UTF-8');
+}, 'UTF-8 module script with wrong charset in Content-Type');
+</script>
+
+<script type="module" src="../serve-with-content-type.py?fn=external-script-windows1250.js&ct=text/javascript&dummy=1"></script>
+<script type="module">
+test(function() {
+  assert_not_equals(window.getSomeString(), "śćążź",
+                    'Should be decoded as UTF-8');
+}, 'Non-UTF-8 module script');
+</script>
+
+<script type="module" src="../serve-with-content-type.py?fn=external-script-windows1250.js&ct=text/javascript&dummy=2" charset="windows-1250"></script>
+<script type="module">
+test(function() {
+  assert_not_equals(window.getSomeString(), "śćążź",
+                    'Should be decoded as UTF-8');
+}, 'Non-UTF-8 module script with charset in attribute');
+</script>
+
+<script type="module" src="../serve-with-content-type.py?fn=external-script-windows1250.js&ct=text/javascript%3Bcharset=windows-1250"></script>
+<script type="module">
+test(function() {
+  assert_not_equals(window.getSomeString(), "śćążź",
+                    'Should be decoded as UTF-8');
+}, 'Non-UTF-8 module script with charset in Content-Type');
+</script>