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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.code_intelligence.jazzer.junit;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.Truth8.assertThat;
+import static org.junit.Assume.assumeFalse;
+import static org.junit.Assume.assumeTrue;
+import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
+import static org.junit.platform.testkit.engine.EventConditions.container;
+import static org.junit.platform.testkit.engine.EventConditions.displayName;
+import static org.junit.platform.testkit.engine.EventConditions.event;
+import static org.junit.platform.testkit.engine.EventConditions.finishedSuccessfully;
+import static org.junit.platform.testkit.engine.EventConditions.finishedWithFailure;
+import static org.junit.platform.testkit.engine.EventConditions.test;
+import static org.junit.platform.testkit.engine.EventConditions.type;
+import static org.junit.platform.testkit.engine.EventConditions.uniqueIdSubstrings;
+import static org.junit.platform.testkit.engine.EventType.DYNAMIC_TEST_REGISTERED;
+import static org.junit.platform.testkit.engine.EventType.FINISHED;
+import static org.junit.platform.testkit.engine.EventType.REPORTING_ENTRY_PUBLISHED;
+import static org.junit.platform.testkit.engine.EventType.STARTED;
+import static org.junit.platform.testkit.engine.TestExecutionResultConditions.instanceOf;
+
+import com.code_intelligence.jazzer.api.FuzzerSecurityIssueMedium;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.stream.Stream;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.platform.testkit.engine.EngineExecutionResults;
+import org.junit.platform.testkit.engine.EngineTestKit;
+import org.junit.rules.TemporaryFolder;
+
+public class DirectoryInputsTest {
+ private static final String ENGINE = "engine:junit-jupiter";
+ private static final String CLAZZ = "class:com.example.DirectoryInputsFuzzTest";
+ private static final String INPUTS_FUZZ =
+ "test-template:inputsFuzz(com.code_intelligence.jazzer.api.FuzzedDataProvider)";
+ private static final String INVOCATION = "test-template-invocation:#";
+
+ @Rule public TemporaryFolder temp = new TemporaryFolder();
+ Path baseDir;
+
+ @Before
+ public void setup() {
+ baseDir = temp.getRoot().toPath();
+ }
+
+ @Test
+ public void fuzzingEnabled() throws IOException {
+ assumeFalse(System.getenv("JAZZER_FUZZ").isEmpty());
+
+ // Create a fake test resource directory structure with an inputs directory to verify that
+ // Jazzer uses it and emits a crash file into it.
+ Path inputsDirectory = baseDir.resolve(Paths.get("src", "test", "resources", "com", "example",
+ "DirectoryInputsFuzzTestInputs", "inputsFuzz"));
+ Files.createDirectories(inputsDirectory);
+
+ EngineExecutionResults results =
+ EngineTestKit.engine("junit-jupiter")
+ .selectors(selectClass("com.example.DirectoryInputsFuzzTest"))
+ .configurationParameter("jazzer.internal.basedir", baseDir.toAbsolutePath().toString())
+ .execute();
+
+ results.containerEvents().assertEventsMatchExactly(event(type(STARTED), container(ENGINE)),
+ event(type(STARTED), container(uniqueIdSubstrings(ENGINE, CLAZZ))),
+ event(type(STARTED), container(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(FINISHED), container(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ)),
+ finishedSuccessfully()),
+ event(type(FINISHED), container(uniqueIdSubstrings(ENGINE, CLAZZ)), finishedSuccessfully()),
+ event(type(FINISHED), container(ENGINE), finishedSuccessfully()));
+
+ results.testEvents().assertEventsMatchExactly(
+ event(type(DYNAMIC_TEST_REGISTERED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(STARTED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 1))),
+ event(type(FINISHED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 1)),
+ displayName("<empty input>"), finishedSuccessfully()),
+ event(type(DYNAMIC_TEST_REGISTERED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(STARTED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 2))),
+ event(type(FINISHED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 2)),
+ displayName("seed"), finishedWithFailure(instanceOf(FuzzerSecurityIssueMedium.class))),
+ event(type(DYNAMIC_TEST_REGISTERED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(STARTED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 3)),
+ displayName("Fuzzing...")),
+ event(type(FINISHED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 3)),
+ displayName("Fuzzing..."),
+ finishedWithFailure(instanceOf(FuzzerSecurityIssueMedium.class))));
+
+ // Should crash on the exact input "directory" as provided by the seed, with the crash emitted
+ // into the seed corpus.
+ try (Stream<Path> crashFiles = Files.list(baseDir).filter(
+ path -> path.getFileName().toString().startsWith("crash-"))) {
+ assertThat(crashFiles).isEmpty();
+ }
+ try (Stream<Path> seeds = Files.list(inputsDirectory)) {
+ assertThat(seeds).containsExactly(
+ inputsDirectory.resolve("crash-8d392f56d616a516ceabb82ed8906418bce4647d"));
+ }
+ assertThat(Files.readAllBytes(
+ inputsDirectory.resolve("crash-8d392f56d616a516ceabb82ed8906418bce4647d")))
+ .isEqualTo("directory".getBytes(StandardCharsets.UTF_8));
+
+ // Verify that the engine created the generated corpus directory. Since the crash was found on a
+ // seed, it should be empty.
+ Path generatedCorpus = baseDir.resolve(
+ Paths.get(".cifuzz-corpus", "com.example.DirectoryInputsFuzzTest", "inputsFuzz"));
+ assertThat(Files.isDirectory(generatedCorpus)).isTrue();
+ try (Stream<Path> entries = Files.list(generatedCorpus)) {
+ assertThat(entries).isEmpty();
+ }
+ }
+
+ @Test
+ public void fuzzingDisabled() {
+ assumeTrue(System.getenv("JAZZER_FUZZ").isEmpty());
+
+ EngineExecutionResults results =
+ EngineTestKit.engine("junit-jupiter")
+ .selectors(selectClass("com.example.DirectoryInputsFuzzTest"))
+ .execute();
+
+ results.containerEvents().assertEventsMatchExactly(event(type(STARTED), container(ENGINE)),
+ event(type(STARTED), container(uniqueIdSubstrings(ENGINE, CLAZZ))),
+ event(type(STARTED), container(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(REPORTING_ENTRY_PUBLISHED),
+ container(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(FINISHED), container(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(FINISHED), container(uniqueIdSubstrings(ENGINE, CLAZZ)), finishedSuccessfully()),
+ event(type(FINISHED), container(ENGINE), finishedSuccessfully()));
+
+ results.testEvents().assertEventsMatchExactly(
+ event(type(DYNAMIC_TEST_REGISTERED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(STARTED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 1))),
+ event(type(FINISHED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 1)),
+ displayName("<empty input>"), finishedSuccessfully()),
+ event(type(DYNAMIC_TEST_REGISTERED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ))),
+ event(type(STARTED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 2))),
+ event(type(FINISHED), test(uniqueIdSubstrings(ENGINE, CLAZZ, INPUTS_FUZZ, INVOCATION + 2)),
+ displayName("seed"), finishedWithFailure(instanceOf(FuzzerSecurityIssueMedium.class))));
+
+ // Verify that the generated corpus directory hasn't been created.
+ Path generatedCorpus =
+ baseDir.resolve(Paths.get(".cifuzz-corpus", "com.example.DirectoryInputsFuzzTest"));
+ assertThat(Files.notExists(generatedCorpus)).isTrue();
+ }
+}