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// Copyright 2021 Code Intelligence GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.code_intelligence.jazzer.api;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import java.util.Arrays;
import java.util.Collections;
import org.junit.BeforeClass;
import org.junit.Test;
public class AutofuzzTest {
public interface UnimplementedInterface {}
public interface ImplementedInterface {}
public static class ImplementingClass implements ImplementedInterface {}
private static boolean implIsNotNull(ImplementedInterface impl) {
return impl != null;
}
private static boolean implIsNotNull(UnimplementedInterface impl) {
return impl != null;
}
private static void checkAllTheArguments(
String arg1, int arg2, byte arg3, ImplementedInterface arg4) {
if (!arg1.equals("foobar") || arg2 != 42 || arg3 != 5 || arg4 == null) {
throw new IllegalArgumentException();
}
}
@Test
public void testConsume() {
FuzzedDataProvider data = CannedFuzzedDataProvider.create(
Arrays.asList((byte) 1 /* do not return null */, 0 /* first class on the classpath */,
(byte) 1 /* do not return null */, 0 /* first constructor */));
ImplementedInterface result = Jazzer.consume(data, ImplementedInterface.class);
assertNotNull(result);
}
@Test
public void testConsumeFailsWithoutException() {
FuzzedDataProvider data = CannedFuzzedDataProvider.create(Collections.singletonList(
(byte) 1 /* do not return null without searching for implementing classes */));
assertNull(Jazzer.consume(data, UnimplementedInterface.class));
}
@Test
public void testAutofuzz() {
FuzzedDataProvider data = CannedFuzzedDataProvider.create(
Arrays.asList((byte) 1 /* do not return null */, 0 /* first class on the classpath */,
(byte) 1 /* do not return null */, 0 /* first constructor */));
assertEquals(Boolean.TRUE,
Jazzer.autofuzz(data, (Function1<ImplementedInterface, ?>) AutofuzzTest::implIsNotNull));
}
@Test
public void testAutofuzzFailsWithException() {
FuzzedDataProvider data = CannedFuzzedDataProvider.create(
Collections.singletonList((byte) 1 /* do not return null */));
try {
Jazzer.autofuzz(data, (Function1<UnimplementedInterface, ?>) AutofuzzTest::implIsNotNull);
} catch (AutofuzzConstructionException e) {
// Pass.
return;
}
fail("should have thrown an AutofuzzConstructionException");
}
@Test
public void testAutofuzzConsumer() {
FuzzedDataProvider data = CannedFuzzedDataProvider.create(
Arrays.asList((byte) 1 /* do not return null */, 6 /* string length */, "foobar", 42,
(byte) 5, (byte) 1 /* do not return null */, 0 /* first class on the classpath */,
(byte) 1 /* do not return null */, 0 /* first constructor */));
Jazzer.autofuzz(data, AutofuzzTest::checkAllTheArguments);
}
@Test
public void testAutofuzzConsumerThrowsException() {
FuzzedDataProvider data =
CannedFuzzedDataProvider.create(Arrays.asList((byte) 1 /* do not return null */,
6 /* string length */, "foobar", 42, (byte) 5, (byte) 0 /* *do* return null */));
try {
Jazzer.autofuzz(data, AutofuzzTest::checkAllTheArguments);
} catch (IllegalArgumentException e) {
// Pass.
return;
}
fail("should have thrown an IllegalArgumentException");
}
}
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