Sort map keys before writing in TsMap

pkg/infra/iac3/map_marshaller.go

@@ -2,6 +2,7 @@ package iac3
 
 import (
 	"fmt"
+	"sort"
 	"strings"
 )
 
@@ -26,11 +27,16 @@ type (
 func (m TsMap) String() string {
 	buf := strings.Builder{}
 	buf.WriteRune('{')
-	keys := len(m)
+	keys := make([]string, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
 	i := 0
-	for k, v := range m {
+	for _, k := range keys {
+		v := m[k]
 		buf.WriteString(fmt.Sprintf("%s: %v", k, v))
-		if i < keys-1 {
+		if i < len(m)-1 {
 			buf.WriteString(", ")
 		}
 		i++

pkg/infra/iac3/map_marshaller_test.go

@@ -25,12 +25,12 @@ func TestTsMap_String(t *testing.T) {
 		{
 			name: "map with multiple entries",
 			m:    TsMap{"foo": "bar", "baz": "qux"},
-			want: "{foo: bar, baz: qux}",
+			want: "{baz: qux, foo: bar}",
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			assert.Equal(t, tt.m.String(), tt.want)
+			assert.Equal(t, tt.want, tt.m.String())
 		})
 	}
 }