diff --git a/test/raw.cpp b/test/raw.cpp
index 81de96d..fd8ae71 100644
--- a/test/raw.cpp
+++ b/test/raw.cpp
@@ -12,6 +12,15 @@
 namespace
 {
 
+TEST_CASE("Equal", "[Equal]")
+{
+    int a = 4;
+    unsigned b = 4;
+    CHECK(equal(a, b));
+    b = 5;
+    CHECK(!equal(a, b));
+}
+
 TEST_CASE("Copy From Empty", "[CopyFrom]")
 {
     const std::string_view s;