diff --git a/tests/phpunit/data/themedir1/block-theme-child-with-fluid-typography/style.css b/tests/phpunit/data/themedir1/block-theme-child-with-fluid-typography/style.css
new file mode 100644
index 0000000000..19abbecf86
--- /dev/null
+++ b/tests/phpunit/data/themedir1/block-theme-child-with-fluid-typography/style.css
@@ -0,0 +1,8 @@
+/*
+Theme Name: Block Theme Child Theme With Fluid Typography
+Theme URI: https://wordpress.org/
+Description: For testing purposes only.
+Template: block-theme
+Version: 1.0.0
+Text Domain: block-theme-child-with-fluid-typography
+*/
diff --git a/tests/phpunit/data/themedir1/block-theme-child-with-fluid-typography/theme.json b/tests/phpunit/data/themedir1/block-theme-child-with-fluid-typography/theme.json
new file mode 100644
index 0000000000..93234766ed
--- /dev/null
+++ b/tests/phpunit/data/themedir1/block-theme-child-with-fluid-typography/theme.json
@@ -0,0 +1,9 @@
+{
+	"version": 2,
+	"settings": {
+		"appearanceTools": true,
+		"typography": {
+			"fluid": true
+		}
+	}
+}