diff --git a/remy/internal/types/type_key_test.go b/remy/internal/types/type_key_test.go
new file mode 100644
index 0000000..b2fa23f
--- /dev/null
+++ b/remy/internal/types/type_key_test.go
@@ -0,0 +1,66 @@
+package types
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestBindKey_AsMapKey(t *testing.T) {
+	dependenciesBool := BindDependencies[any]{}
+
+	testList := []struct {
+		key   BindKey
+		value any
+	}{
+		{
+			key:   KeyElem[bool]{},
+			value: true,
+		},
+		{
+			key:   KeyElem[uint8]{},
+			value: 42,
+		},
+		{
+			key:   StrKeyElem("key"),
+			value: "answers everywhere",
+		},
+		{
+			key:   StrKeyElem("Gomu Gomu no Mi"),
+			value: "Hito Hito no Mi, Model: Nika",
+		},
+		{
+			key:   KeyElem[map[string]bool]{},
+			value: map[string]bool{"test": true},
+		},
+		{
+			key:   KeyElem[float64]{},
+			value: 5216848912325.9924187442,
+		},
+		{
+			key:   KeyElem[string]{},
+			value: "this is a little different one",
+		},
+	}
+
+	for _, subject := range testList {
+		dependenciesBool[subject.key] = subject.value
+	}
+
+	for _, subject := range testList {
+		if val, exists := dependenciesBool[subject.key]; !exists ||
+			!reflect.DeepEqual(val, subject.value) {
+			t.Errorf(
+				"Expected BindDependencies[any] to store and retrieve value correctly, got %v",
+				val,
+			)
+		}
+	}
+}
+
+// TestComparableBindKey is a test just to improve coverage over the type_key file
+func TestComparableBindKey(t *testing.T) {
+	testList := []BindKey{KeyElem[bool]{}, StrKeyElem("any")}
+	for _, subject := range testList {
+		subject.comparable()
+	}
+}