diff --git a/test/runtime/samples/attribute-boolean-case-insensitive/_config.js b/test/runtime/samples/attribute-boolean-case-insensitive/_config.js
new file mode 100644
index 0000000000..16e5ade6d2
--- /dev/null
+++ b/test/runtime/samples/attribute-boolean-case-insensitive/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: `<input readonly>`
+};
diff --git a/test/runtime/samples/attribute-boolean-case-insensitive/main.svelte b/test/runtime/samples/attribute-boolean-case-insensitive/main.svelte
new file mode 100644
index 0000000000..9020894086
--- /dev/null
+++ b/test/runtime/samples/attribute-boolean-case-insensitive/main.svelte
@@ -0,0 +1 @@
+<input READONLY={true} REQUIRED={false}>
diff --git a/test/runtime/samples/attribute-boolean-with-spread/_config.js b/test/runtime/samples/attribute-boolean-with-spread/_config.js
new file mode 100644
index 0000000000..270804170d
--- /dev/null
+++ b/test/runtime/samples/attribute-boolean-with-spread/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: `<input>`
+};
diff --git a/test/runtime/samples/attribute-boolean-with-spread/main.svelte b/test/runtime/samples/attribute-boolean-with-spread/main.svelte
new file mode 100644
index 0000000000..d0616e3024
--- /dev/null
+++ b/test/runtime/samples/attribute-boolean-with-spread/main.svelte
@@ -0,0 +1 @@
+<input {...{ foo: null }} readonly={false} required={false} disabled={null}>