Add properties to impresion in impression listener

Author: gthea

splitio_platform_interface/lib/split_impression.dart

@@ -7,9 +7,10 @@ class Impression {
   final String? appliedRule;
   final num? changeNumber;
   final Map<String, dynamic> attributes;
+  final Map<String, dynamic> properties;
 
   Impression(this.key, this.bucketingKey, this.split, this.treatment, this.time,
-      this.appliedRule, this.changeNumber, this.attributes);
+      this.appliedRule, this.changeNumber, this.attributes, this.properties);
 
   static Impression fromMap(Map<dynamic, dynamic> map) {
     return Impression(
@@ -20,11 +21,12 @@ class Impression {
         map['time'] as num?,
         map['appliedRule'] as String?,
         map['changeNumber'] as num?,
-        Map<String, dynamic>.from(map['attributes'] as Map));
+        Map<String, dynamic>.from(map['attributes'] as Map),
+        Map<String, dynamic>.from(map['properties'] as Map));
   }
 
   @override
   String toString() {
-    return 'Impression = {"key":$key, "bucketingKey":$bucketingKey, "split":$split, "treatment":$treatment, "time":$time, "appliedRule": $appliedRule, "changeNumber":$changeNumber, "attributes":$attributes}';
+    return 'Impression = {"key":$key, "bucketingKey":$bucketingKey, "split":$split, "treatment":$treatment, "time":$time, "appliedRule": $appliedRule, "changeNumber":$changeNumber, "attributes":$attributes, "properties":$properties}';
   }
 }

splitio_platform_interface/test/split_impression_test.dart

@@ -12,6 +12,7 @@ void main() {
       'appliedRule': 'appliedRule',
       'changeNumber': 12512512,
       'attributes': {'good': true},
+      'properties': {'bad': false, 'number': 10.5},
     };
 
     Impression expectedImpression = Impression(
@@ -23,6 +24,7 @@ void main() {
       'appliedRule',
       12512512,
       {'good': true},
+      {'bad': false, 'number': 10.5},
     );
 
     Impression impression = Impression.fromMap(sourceMap);
@@ -34,5 +36,6 @@ void main() {
     expect(impression.appliedRule, expectedImpression.appliedRule);
     expect(impression.changeNumber, expectedImpression.changeNumber);
     expect(impression.attributes, expectedImpression.attributes);
+    expect(impression.properties, expectedImpression.properties);
   });
 }