examples/junit/src/test/java/com/example/DirectoryInputsFuzzTest.java


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// Copyright 2022 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.example;

import com.code_intelligence.jazzer.api.FuzzedDataProvider;
import com.code_intelligence.jazzer.api.FuzzerSecurityIssueMedium;
import com.code_intelligence.jazzer.junit.FuzzTest;

public class DirectoryInputsFuzzTest {
  private static boolean firstSeed = true;

  @FuzzTest(maxDuration = "0s")
  public void inputsFuzz(FuzzedDataProvider data) {
    // Only execute the fuzz test logic on the empty input and the only seed.
    if (data.remainingBytes() == 0) {
      return;
    }
    String input = data.consumeRemainingAsString();
    if (!firstSeed && !input.equals("directory")) {
      throw new IllegalStateException("Should have crashed on the first non-empty input");
    }
    firstSeed = false;
    if (input.equals("directory")) {
      throw new FuzzerSecurityIssueMedium();
    }
  }
}