add more unit testing

Signed-off-by: Per Goncalves da Silva <[email protected]>

Author: Per Goncalves da Silva

internal/operator-controller/rukpak/convert/generate_test.go

@@ -2,6 +2,7 @@ package convert_test
 
 import (
 	"cmp"
+	"fmt"
 	"slices"
 	"testing"
 
@@ -21,6 +22,37 @@ import (
 	"github.com/operator-framework/operator-controller/internal/operator-controller/rukpak/convert"
 )
 
+func Test_ChainedResourceGenerator(t *testing.T) {
+	g := convert.ChainedResourceGenerator(
+		func(rv1 *convert.RegistryV1, opts convert.Options) ([]client.Object, error) {
+			return []client.Object{&corev1.Service{}}, nil
+		},
+		func(rv1 *convert.RegistryV1, opts convert.Options) ([]client.Object, error) {
+			return []client.Object{&corev1.ConfigMap{}}, nil
+		},
+	)
+
+	objs, err := g.GenerateResources(&convert.RegistryV1{}, convert.Options{})
+	require.NoError(t, err)
+	require.Equal(t, []client.Object{&corev1.Service{}, &corev1.ConfigMap{}}, objs)
+}
+
+func Test_ChainedResourceGenerator_Errors(t *testing.T) {
+	g := convert.ChainedResourceGenerator(
+		func(rv1 *convert.RegistryV1, opts convert.Options) ([]client.Object, error) {
+			return []client.Object{&corev1.Service{}}, nil
+		},
+		func(rv1 *convert.RegistryV1, opts convert.Options) ([]client.Object, error) {
+			return nil, fmt.Errorf("generator error")
+		},
+	)
+
+	objs, err := g.GenerateResources(&convert.RegistryV1{}, convert.Options{})
+	require.Nil(t, objs)
+	require.Error(t, err)
+	require.Contains(t, err.Error(), "generator error")
+}
+
 func Test_BundleDeploymentGenerator_Succeeds(t *testing.T) {
 	for _, tc := range []struct {
 		name              string