engine: resources: Test to make sure metaparams are preserved

We should ensure these get preserved across encoding/decoding. We rely
on this behaviour.

engine/resources/resources_test.go

@@ -45,6 +45,7 @@ import (
 	"time"
 
 	"github.com/purpleidea/mgmt/engine"
+	engineUtil "github.com/purpleidea/mgmt/engine/util"
 	"github.com/purpleidea/mgmt/pgraph"
 	"github.com/purpleidea/mgmt/util"
 	"github.com/purpleidea/mgmt/util/errwrap"
@@ -1777,3 +1778,47 @@ func TestResPtrUID1(t *testing.T) {
 		t.Errorf("uid's don't match")
 	}
 }
+
+func TestResToB64(t *testing.T) {
+	res, err := engine.NewNamedResource("noop", "n1")
+	if err != nil {
+		t.Errorf("could not build resource: %+v", err)
+		return
+	}
+
+	s, err := engineUtil.ResToB64(res)
+	if err != nil {
+		t.Errorf("error trying to encode res: %s", err.Error())
+		return
+	}
+	t.Logf("out: %s", s)
+}
+
+func TestResToB64Meta(t *testing.T) {
+	hidden := true // must be true, since false is a default
+
+	res, err := engine.NewNamedResource("noop", "n1")
+	if err != nil {
+		t.Errorf("could not build resource: %+v", err)
+		return
+	}
+	res.MetaParams().Hidden = hidden
+
+	s, err := engineUtil.ResToB64(res)
+	if err != nil {
+		t.Errorf("error trying to encode res: %s", err.Error())
+		return
+	}
+	t.Logf("out: %s", s)
+
+	r, err := engineUtil.B64ToRes(s)
+	if err != nil {
+		t.Errorf("error trying to decode res: %s", err.Error())
+		return
+	}
+	if r.MetaParams().Hidden != hidden {
+		t.Errorf("metaparam did not get preserved")
+		return
+	}
+	t.Logf("meta: %v", r.MetaParams().Hidden)
+}