improved error reporting for ObjectSchema minProperties and maxProperties (includes violated keyword)

Author: erosb

core/src/main/java/org/everit/json/schema/ObjectSchema.java

@@ -362,12 +362,12 @@ private List<ValidationException> testSize(final JSONObject subject) {
     if (minProperties != null && actualSize < minProperties.intValue()) {
       return Arrays
           .asList(new ValidationException(this, String.format("minimum size: [%d], found: [%d]",
-              minProperties, actualSize)));
+              minProperties, actualSize), "minProperties"));
     }
     if (maxProperties != null && actualSize > maxProperties.intValue()) {
       return Arrays
           .asList(new ValidationException(this, String.format("maximum size: [%d], found: [%d]",
-              maxProperties, actualSize)));
+              maxProperties, actualSize), "maxProperties"));
     }
     return Collections.emptyList();
   }

core/src/test/java/org/everit/json/schema/ObjectSchemaTest.java

@@ -48,13 +48,21 @@ public void additionalPropertySchema() {
   @Test
   public void maxPropertiesFailure() {
     ObjectSchema subject = ObjectSchema.builder().maxProperties(2).build();
-    TestSupport.expectFailure(subject, "#", OBJECTS.get("maxPropertiesFailure"));
+    TestSupport.failureOf(subject)
+        .input(OBJECTS.get("maxPropertiesFailure"))
+        .expectedPointer("#")
+        .expectedKeyword("maxProperties")
+        .expect();
   }
 
   @Test
   public void minPropertiesFailure() {
     ObjectSchema subject = ObjectSchema.builder().minProperties(2).build();
-    TestSupport.expectFailure(subject, "#", OBJECTS.get("minPropertiesFailure"));
+    TestSupport.failureOf(subject)
+        .input(OBJECTS.get("minPropertiesFailure"))
+        .expectedPointer("#")
+        .expectedKeyword("minProperties")
+        .expect();
   }
 
   @Test