diff --git a/tests/input/evdev/TestHelpers.h b/tests/input/evdev/TestHelpers.h
new file mode 100644
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--- /dev/null
+++ b/tests/input/evdev/TestHelpers.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef ANDROID_TEST_HELPERS_H_
+#define ANDROID_TEST_HELPERS_H_
+
+#include <future>
+#include <thread>
+
+namespace android {
+
+/**
+ * Runs the given function after the specified delay.
+ * NOTE: if the std::future returned from std::async is not bound, this function
+ * will block until the task completes. This is almost certainly NOT what you
+ * want, so save the return value from delay_async into a variable:
+ *
+ * auto f = delay_async(100ms, []{ ALOGD("Hello world"); });
+ */
+template<class Function, class Duration>
+decltype(auto) delay_async(Duration&& delay, Function&& task)
+{
+    return std::async(std::launch::async, [=]{ std::this_thread::sleep_for(delay); task(); });
+}
+
+/**
+ * Creates and opens a temporary file at the given path. The file is unlinked
+ * and closed in the destructor.
+ */
+class TempFile {
+public:
+    TempFile(const char* path);
+    ~TempFile();
+
+    // No copy or assign
+    TempFile(const TempFile&) = delete;
+    TempFile& operator=(const TempFile&) = delete;
+
+    const char* getName() const { return mName; }
+    int getFd() const { return mFd; }
+
+private:
+    char* mName;
+    int mFd;
+};
+
+/**
+ * Creates a temporary directory that can create temporary files. The directory
+ * is emptied and deleted in the destructor.
+ */
+class TempDir {
+public:
+    TempDir();
+    ~TempDir();
+
+    // No copy or assign
+    TempDir(const TempDir&) = delete;
+    TempDir& operator=(const TempDir&) = delete;
+
+    const char* getName() const { return mName; }
+
+    TempFile* newTempFile();
+
+private:
+    char* mName;
+};
+
+}  // namespace android
+
+#endif  // ANDROID_TEST_HELPERS_H_