1 files changed, 79 insertions, 0 deletions
diff --git a/launcher/jvm_tooling_test.cpp b/launcher/jvm_tooling_test.cpp
new file mode 100644
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+++ b/launcher/jvm_tooling_test.cpp
@@ -0,0 +1,79 @@
+// 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.
+
+#include "jvm_tooling.h"
+
+#include <memory>
+
+#include "gtest/gtest.h"
+#include "tools/cpp/runfiles/runfiles.h"
+
+#ifdef _WIN32
+#define ARG_SEPARATOR ";"
+#else
+#define ARG_SEPARATOR ":"
+#endif
+
+namespace jazzer {
+
+class JvmToolingTest : public ::testing::Test {
+ protected:
+  // After DestroyJavaVM() no new JVM instance can be created in the same
+  // process, so we set up a single JVM instance for this test binary which gets
+  // destroyed after all tests in this test suite have finished.
+  static void SetUpTestCase() {
+    FLAGS_jvm_args =
+        "-Denv1=va\\" ARG_SEPARATOR "l1\\\\" ARG_SEPARATOR "-Denv2=val2";
+    using ::bazel::tools::cpp::runfiles::Runfiles;
+    std::unique_ptr<Runfiles> runfiles(Runfiles::CreateForTest());
+    FLAGS_cp = runfiles->Rlocation(
+        "jazzer/launcher/testdata/fuzz_target_mocks_deploy.jar");
+
+    jvm_ = std::unique_ptr<JVM>(new JVM());
+  }
+
+  static void TearDownTestCase() { jvm_.reset(nullptr); }
+
+  static std::unique_ptr<JVM> jvm_;
+};
+
+std::unique_ptr<JVM> JvmToolingTest::jvm_ = nullptr;
+
+TEST_F(JvmToolingTest, JniProperties) {
+  auto &env = jvm_->GetEnv();
+  auto property_printer_class = env.FindClass("test/PropertyPrinter");
+  ASSERT_NE(nullptr, property_printer_class);
+  auto method_id =
+      env.GetStaticMethodID(property_printer_class, "printProperty",
+                            "(Ljava/lang/String;)Ljava/lang/String;");
+  ASSERT_NE(nullptr, method_id);
+
+  for (const auto &el : std::vector<std::pair<std::string, std::string>>{
+           {"not set property", ""},
+           {"env1", "va" ARG_SEPARATOR "l1\\"},
+           {"env2", "val2"}}) {
+    jstring str = env.NewStringUTF(el.first.c_str());
+    auto ret = (jstring)env.CallStaticObjectMethod(property_printer_class,
+                                                   method_id, str);
+    ASSERT_FALSE(env.ExceptionCheck());
+    if (el.second.empty()) {
+      ASSERT_EQ(nullptr, ret);
+    } else {
+      ASSERT_NE(nullptr, ret);
+      jboolean is_copy;
+      ASSERT_EQ(el.second, env.GetStringUTFChars(ret, &is_copy));
+    }
+  }
+}
+}  // namespace jazzer