diff --git a/unittests/ref_equal.chai b/unittests/ref_equal.chai
new file mode 100644
index 00000000..44437f34
--- /dev/null
+++ b/unittests/ref_equal.chai
@@ -0,0 +1,4 @@
+var i = 3
+var j := i
+j = 4
+print(i)
diff --git a/unittests/ref_equal.txt b/unittests/ref_equal.txt
new file mode 100644
index 00000000..b8626c4c
--- /dev/null
+++ b/unittests/ref_equal.txt
@@ -0,0 +1 @@
+4