Fixing min/max int validation to not output decimal constraints.

Author: NicholasAzar

src/main/java/com/networknt/schema/BaseJsonValidator.java

@@ -125,4 +125,12 @@ protected void debug(Logger logger, JsonNode node, JsonNode rootNode, String at)
     protected ValidatorTypeCode getValidatorType() {
         return validatorType;
     }
+
+    protected String getNodeFieldType() {
+        JsonNode typeField = this.getParentSchema().getSchemaNode().get("type");
+        if (typeField != null) {
+            return typeField.asText();
+        }
+        return null;
+    }
 }

src/main/java/com/networknt/schema/MaximumValidator.java

@@ -55,8 +55,13 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
             return Collections.emptySet();
         }
 
+        String fieldType = this.getNodeFieldType();
+
         double value = node.doubleValue();
         if (greaterThan(value, maximum) || (excludeEqual && equals(value, maximum))) {
+            if (JsonType.INTEGER.toString().equals(fieldType)) {
+                return Collections.singleton(buildValidationMessage(at, "" + (int)maximum));
+            }
             return Collections.singleton(buildValidationMessage(at, "" + maximum));
         }
         return Collections.emptySet();

src/main/java/com/networknt/schema/MinimumValidator.java

@@ -53,9 +53,13 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
             // minimum only applies to numbers
             return Collections.emptySet();
         }
+        String fieldType = this.getNodeFieldType();
 
         double value = node.doubleValue();
         if (lessThan(value, minimum) || (excluded && equals(value, minimum))) {
+            if (JsonType.INTEGER.toString().equals(fieldType)) {
+                return Collections.singleton(buildValidationMessage(at, "" + (int) minimum));
+            }
             return Collections.singleton(buildValidationMessage(at, "" + minimum));
         }
         return Collections.emptySet();