Preserve Audita module selections in YAML output

internal/config/credential_projection_test.go

@@ -0,0 +1,33 @@
+package config
+
+import (
+	"reflect"
+	"testing"
+
+	"gopkg.in/yaml.v3"
+)
+
+func TestAuditaYAMLPreservesModuleSelection(t *testing.T) {
+	for _, tc := range []struct {
+		name    string
+		modules []string
+	}{
+		{name: "omitted"},
+		{name: "explicit empty", modules: []string{}},
+		{name: "ordered repetitions", modules: []string{"grammar", "names", "grammar"}},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			data, err := yaml.Marshal(AuditaConfig{Modules: tc.modules})
+			if err != nil {
+				t.Fatal(err)
+			}
+			var decoded AuditaConfig
+			if err := yaml.Unmarshal(data, &decoded); err != nil {
+				t.Fatal(err)
+			}
+			if !reflect.DeepEqual(decoded.Modules, tc.modules) {
+				t.Fatalf("modules = %#v, want %#v; YAML:\n%s", decoded.Modules, tc.modules, data)
+			}
+		})
+	}
+}