diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/embedded-content/the-object-element/object-setcustomvalidity.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/embedded-content/the-object-element/object-setcustomvalidity.txt
new file mode 100644
index 00000000000..058b86546c3
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/embedded-content/the-object-element/object-setcustomvalidity.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Pass
+Pass	object setCustomValidity is correct
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-button-element/button-setcustomvalidity.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-button-element/button-setcustomvalidity.txt
new file mode 100644
index 00000000000..84668fb43e4
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-button-element/button-setcustomvalidity.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Pass
+Pass	button setCustomValidity is correct
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-setcustomvalidity.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-setcustomvalidity.txt
new file mode 100644
index 00000000000..498929edbbb
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-setcustomvalidity.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Pass
+Pass	input setCustomValidity is correct
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-output-element/output-setcustomvalidity.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-output-element/output-setcustomvalidity.txt
new file mode 100644
index 00000000000..4bc59986003
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-output-element/output-setcustomvalidity.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Pass
+Pass	output setCustomValidity is correct
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-textarea-element/textarea-setcustomvalidity.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-textarea-element/textarea-setcustomvalidity.txt
new file mode 100644
index 00000000000..b45d72d42bb
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-textarea-element/textarea-setcustomvalidity.txt
@@ -0,0 +1,6 @@
+Harness status: OK
+
+Found 1 tests
+
+1 Pass
+Pass	textarea setCustomValidity is correct
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/html/semantics/embedded-content/the-object-element/object-setcustomvalidity.html b/Tests/LibWeb/Text/input/wpt-import/html/semantics/embedded-content/the-object-element/object-setcustomvalidity.html
new file mode 100644
index 00000000000..f691406c7c1
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/html/semantics/embedded-content/the-object-element/object-setcustomvalidity.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<title>object setCustomValidity</title>
+<script src="../../../../resources/testharness.js"></script>
+<script src="../../../../resources/testharnessreport.js"></script>
+
+<object id='object_test'></object>
+
+<script>
+
+test(() => {
+  let elem = document.getElementById("object_test");
+  assert_false(elem.validity.customError);
+  elem.setCustomValidity("custom error");
+  assert_true(elem.validity.customError);
+}, "object setCustomValidity is correct")
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-button-element/button-setcustomvalidity.html b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-button-element/button-setcustomvalidity.html
new file mode 100644
index 00000000000..0eb10500681
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-button-element/button-setcustomvalidity.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<title>button setCustomValidity</title>
+<script src="../../../../resources/testharness.js"></script>
+<script src="../../../../resources/testharnessreport.js"></script>
+
+<button id='button_test'></button>
+
+<script>
+
+test(() => {
+  let elem = document.getElementById("button_test");
+  assert_false(elem.validity.customError);
+  elem.setCustomValidity("custom error");
+  assert_true(elem.validity.customError);
+}, "button setCustomValidity is correct")
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-input-element/input-setcustomvalidity.html b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-input-element/input-setcustomvalidity.html
new file mode 100644
index 00000000000..06976bf4cd7
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-input-element/input-setcustomvalidity.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<title>input setCustomValidity</title>
+<script src="../../../../resources/testharness.js"></script>
+<script src="../../../../resources/testharnessreport.js"></script>
+
+<input id='input_test'>
+
+<script>
+
+test(() => {
+  let elem = document.getElementById("input_test");
+  assert_false(elem.validity.customError);
+  elem.setCustomValidity("custom error");
+  assert_true(elem.validity.customError);
+}, "input setCustomValidity is correct")
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-output-element/output-setcustomvalidity.html b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-output-element/output-setcustomvalidity.html
new file mode 100644
index 00000000000..f7dd5013d01
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-output-element/output-setcustomvalidity.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<title>output setCustomValidity</title>
+<script src="../../../../resources/testharness.js"></script>
+<script src="../../../../resources/testharnessreport.js"></script>
+
+<output id='output_test'></output>
+
+<script>
+
+test(() => {
+  let elem = document.getElementById("output_test");
+  assert_false(elem.validity.customError);
+  elem.setCustomValidity("custom error");
+  assert_true(elem.validity.customError);
+}, "output setCustomValidity is correct")
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-textarea-element/textarea-setcustomvalidity.html b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-textarea-element/textarea-setcustomvalidity.html
new file mode 100644
index 00000000000..6c6c9904f42
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/html/semantics/forms/the-textarea-element/textarea-setcustomvalidity.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<title>textarea setCustomValidity</title>
+<script src="../../../../resources/testharness.js"></script>
+<script src="../../../../resources/testharnessreport.js"></script>
+
+<textarea id='textarea_test'></textarea>
+
+<script>
+
+test(() => {
+  let elem = document.getElementById("textarea_test");
+  assert_false(elem.validity.customError);
+  elem.setCustomValidity("custom error");
+  assert_true(elem.validity.customError);
+}, "textarea setCustomValidity is correct")
+
+</script>
