diff --git a/fine/tests/expression/errors/class_duplicate_fields.fine b/fine/tests/expression/errors/class_duplicate_fields.fine
new file mode 100644
index 00000000..396edc01
--- /dev/null
+++ b/fine/tests/expression/errors/class_duplicate_fields.fine
@@ -0,0 +1,8 @@
+class Foo {
+  x: f64;
+  x: f64;
+}
+
+// @ignore
+// @expect-errors:
+// asdfadsf
diff --git a/fine/tests/expression/errors/duplicate_arguments.fine b/fine/tests/expression/errors/duplicate_arguments.fine
new file mode 100644
index 00000000..7dfb6127
--- /dev/null
+++ b/fine/tests/expression/errors/duplicate_arguments.fine
@@ -0,0 +1,5 @@
+fun something(x: f64, x: f64) {}
+
+// @ignore
+// @expect-errors:
+// asdfadsf