Add Jazzer.consume to the Jazzer API

This requires moving AutofuzzConstructionException to api package.

2 files changed, 66 insertions, 0 deletions

diff --git a/agent/src/test/java/com/code_intelligence/jazzer/api/AutofuzzTest.java b/agent/src/test/java/com/code_intelligence/jazzer/api/AutofuzzTest.java
new file mode 100644
index 00000000..b4696ce8
--- /dev/null
+++ b/agent/src/test/java/com/code_intelligence/jazzer/api/AutofuzzTest.java
@@ -0,0 +1,45 @@
+// 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.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import java.util.Arrays;
+import java.util.Collections;
+import org.junit.Test;
+
+public class AutofuzzTest {
+  public interface UnimplementedInterface {}
+
+  public interface ImplementedInterface {}
+  public static class ImplementingClass implements ImplementedInterface {}
+
+  @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));
+  }
+}
diff --git a/agent/src/test/java/com/code_intelligence/jazzer/api/BUILD.bazel b/agent/src/test/java/com/code_intelligence/jazzer/api/BUILD.bazel
new file mode 100644
index 00000000..9192ff77
--- /dev/null
+++ b/agent/src/test/java/com/code_intelligence/jazzer/api/BUILD.bazel
@@ -0,0 +1,21 @@
+java_test(
+    name = "AutofuzzTest",
+    size = "small",
+    srcs = [
+        "AutofuzzTest.java",
+    ],
+    env = {
+        # Also consider implementing classes from com.code_intelligence.jazzer.*.
+        "JAZZER_AUTOFUZZ_TESTING": "1",
+    },
+    test_class = "com.code_intelligence.jazzer.api.AutofuzzTest",
+    runtime_deps = [
+        "//agent/src/main/java/com/code_intelligence/jazzer/autofuzz",
+        # Needed for JazzerInternal.
+        "//agent/src/main/java/com/code_intelligence/jazzer/runtime",
+    ],
+    deps = [
+        "//agent/src/main/java/com/code_intelligence/jazzer/api",
+        "@maven//:junit_junit",
+    ],
+)