diff --git a/test/no-constant-binary-expression.js b/test/no-constant-binary-expression.js
new file mode 100644
index 0000000..832c6dc
--- /dev/null
+++ b/test/no-constant-binary-expression.js
@@ -0,0 +1,7 @@
+/*eslint-disable no-undef,no-unused-vars*/
+
+// Incorrect
+const value1 = !foo == null; // eslint-disable-line no-constant-binary-expression
+
+// Correct
+const value2 = !(foo == null);