fix(model): omit changelog from json if empty (#1137)

models/packages.go

@@ -81,7 +81,7 @@ type Package struct {
 	NewRelease       string               `json:"newRelease"`
 	Arch             string               `json:"arch"`
 	Repository       string               `json:"repository"`
-	Changelog        Changelog            `json:"changelog"`
+	Changelog        *Changelog           `json:"changelog,omitempty"`
 	AffectedProcs    []AffectedProcess    `json:",omitempty"`
 	NeedRestartProcs []NeedRestartProcess `json:",omitempty"`
 }

models/packages_test.go

@@ -287,7 +287,7 @@ func TestPackage_FormatVersionFromTo(t *testing.T) {
 				NewRelease:       tt.fields.NewRelease,
 				Arch:             tt.fields.Arch,
 				Repository:       tt.fields.Repository,
-				Changelog:        tt.fields.Changelog,
+				Changelog:        &tt.fields.Changelog,
 				AffectedProcs:    tt.fields.AffectedProcs,
 				NeedRestartProcs: tt.fields.NeedRestartProcs,
 			}