1 files changed, 9 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-layout-api/constraints/support/constraints-fixed-inline-size.js b/testing/web-platform/tests/css/css-layout-api/constraints/support/constraints-fixed-inline-size.js
new file mode 100644
index 0000000000..3636f36654
--- /dev/null
+++ b/testing/web-platform/tests/css/css-layout-api/constraints/support/constraints-fixed-inline-size.js
@@ -0,0 +1,9 @@
+registerLayout('test', class {
+  async intrinsicSizes() {}
+  async layout(children, edges, constraints, styleMap) {
+    if (constraints.fixedInlineSize !== 100)
+      return {autoBlockSize: 0};
+
+    return {autoBlockSize: 100};
+  }
+});