issue #280 : exclude fields of type Class from being randomized

Author: fmbenhassine

random-beans/src/main/java/io/github/benas/randombeans/randomizers/registry/InternalRandomizerRegistry.java

@@ -29,6 +29,7 @@
 import io.github.benas.randombeans.api.RandomizerRegistry;
 import io.github.benas.randombeans.randomizers.misc.BooleanRandomizer;
 import io.github.benas.randombeans.randomizers.misc.LocaleRandomizer;
+import io.github.benas.randombeans.randomizers.misc.SkipRandomizer;
 import io.github.benas.randombeans.randomizers.misc.UUIDRandomizer;
 import io.github.benas.randombeans.randomizers.net.UriRandomizer;
 import io.github.benas.randombeans.randomizers.net.UrlRandomizer;
@@ -103,6 +104,8 @@ public void init(EnhancedRandomParameters parameters) {
         randomizers.put(URI.class, new UriRandomizer(seed));
         randomizers.put(Locale.class, new LocaleRandomizer(seed));
         randomizers.put(UUID.class, new UUIDRandomizer(seed));
+        // issue #280: skip fields of type Class
+        randomizers.put(Class.class, new SkipRandomizer());
     }
 
     @Override

random-beans/src/test/java/io/github/benas/randombeans/EnhancedRandomImplTest.java

@@ -48,6 +48,7 @@
 import java.util.Set;
 import java.util.stream.Stream;
 
+import io.github.benas.randombeans.beans.*;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
@@ -58,16 +59,6 @@
 import io.github.benas.randombeans.api.EnhancedRandom;
 import io.github.benas.randombeans.api.ObjectGenerationException;
 import io.github.benas.randombeans.api.Randomizer;
-import io.github.benas.randombeans.beans.AbstractBean;
-import io.github.benas.randombeans.beans.Address;
-import io.github.benas.randombeans.beans.Gender;
-import io.github.benas.randombeans.beans.Human;
-import io.github.benas.randombeans.beans.ImmutableBean;
-import io.github.benas.randombeans.beans.Node;
-import io.github.benas.randombeans.beans.Person;
-import io.github.benas.randombeans.beans.Street;
-import io.github.benas.randombeans.beans.TestData;
-import io.github.benas.randombeans.beans.TestEnum;
 import io.github.benas.randombeans.randomizers.misc.ConstantRandomizer;
 import io.github.benas.randombeans.util.ReflectionUtils;
 
@@ -272,6 +263,17 @@ public void nextEnumShouldNotAlwaysReturnTheSameValue() {
         assertThat(distinctEnumBeans.size()).isGreaterThan(1);
     }
 
+    @Test
+    public void fieldsOfTypeClassShouldBeSkipped() {
+        try {
+            TestBean testBean = enhancedRandom.nextObject(TestBean.class);
+            assertThat(testBean.getException()).isNotNull();
+            assertThat(testBean.getClazz()).isNull();
+        } catch (Exception e) {
+            fail("Should skip fields of type Class");
+        }
+    }
+
     private void validatePerson(final Person person) {
         assertThat(person).isNotNull();
         assertThat(person.getEmail()).isNotEmpty();

random-beans/src/test/java/io/github/benas/randombeans/beans/TestBean.java

@@ -0,0 +1,45 @@
+/**
+ * The MIT License
+ *
+ *   Copyright (c) 2019, Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)
+ *
+ *   Permission is hereby granted, free of charge, to any person obtaining a copy
+ *   of this software and associated documentation files (the "Software"), to deal
+ *   in the Software without restriction, including without limitation the rights
+ *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *   copies of the Software, and to permit persons to whom the Software is
+ *   furnished to do so, subject to the following conditions:
+ *
+ *   The above copyright notice and this permission notice shall be included in
+ *   all copies or substantial portions of the Software.
+ *
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *   THE SOFTWARE.
+ */
+package io.github.benas.randombeans.beans;
+
+public class TestBean {
+    private Exception exception; // contains a field of type Class via StackTraceElement
+    private Class<?> clazz;
+
+    public Exception getException() {
+        return exception;
+    }
+
+    public void setException(Exception exception) {
+        this.exception = exception;
+    }
+
+    public Class<?> getClazz() {
+        return clazz;
+    }
+
+    public void setClazz(Class<?> clazz) {
+        this.clazz = clazz;
+    }
+}