fixing failing tests

Author: erosb

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

@@ -209,6 +209,7 @@ public boolean equals(Object o) {
             return that.canEqual(this) &&
                     Objects.equals(subschemas, that.subschemas) &&
                     Objects.equals(criterion, that.criterion) &&
+                    synthetic == that.synthetic &&
                     super.equals(that);
         } else {
             return false;
@@ -229,7 +230,7 @@ void describePropertiesTo(JSONPrinter writer) {
 
     @Override
     public int hashCode() {
-        return Objects.hash(super.hashCode(), subschemas, criterion);
+        return Objects.hash(super.hashCode(), subschemas, criterion, synthetic);
     }
 
     @Override

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

@@ -28,11 +28,18 @@ public FalseSchema(Builder builder) {
         super(builder);
     }
 
-    @Override void accept(Visitor visitor) {
+    @Override
+    void accept(Visitor visitor) {
         visitor.visitFalseSchema(this);
     }
 
-    @Override public void describeTo(JSONPrinter writer) {
+    @Override
+    public void describeTo(JSONPrinter writer) {
         writer.value(false);
     }
+
+    @Override
+    public String toString() {
+        return "false";
+    }
 }

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

@@ -22,7 +22,13 @@ public TrueSchema(Builder builder) {
         super(builder);
     }
 
-    @Override public void describeTo(JSONPrinter writer) {
+    @Override
+    public void describeTo(JSONPrinter writer) {
         writer.value(true);
     }
+
+    @Override
+    public String toString() {
+        return "true";
+    }
 }