add tests to Clone

helpers/clone.go

@@ -29,11 +29,12 @@ func CloneFallible[T any](v T) (T, error) {
 
 		var nilT T
 
-		vPtr := reflectedValue.Interface()
-		cloned := reflect.New(reflect.Indirect(reflectedValue).Type())
-		if cloned.Interface() == nil {
+		if reflectedValue.IsNil() {
 			return nilT, nil
 		}
+
+		vPtr := reflectedValue.Interface()
+		cloned := reflect.New(reflect.Indirect(reflectedValue).Type())
 		err := copier.CopyWithOption(cloned.Interface(), vPtr, copier.Option{IgnoreEmpty: true, DeepCopy: true})
 		if err != nil {
 			return nilT, err

helpers/clone_test.go

@@ -0,0 +1,46 @@
+package helpers
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type child struct {
+	name string
+}
+
+type cloneable struct {
+	a string
+	b int
+	c float32
+	d child
+}
+
+func TestClone(t *testing.T) {
+	cloneMe := cloneable{
+		a: "abcd",
+		b: 123,
+		c: 1.5,
+		d: child{
+			name: "aname",
+		},
+	}
+
+	cloned := Clone(cloneMe)
+
+	assert.Equal(t, cloneMe, cloned)
+
+	cloneMePtr := &cloneMe
+
+	clonedPtr := Clone(cloneMePtr)
+
+	assert.NotEmpty(t, clonedPtr)
+
+	assert.Equal(t, *cloneMePtr, *clonedPtr)
+
+	clonedPtr = nil
+	clonedNil := Clone(clonedPtr)
+
+	assert.Empty(t, clonedNil)
+}