diff --git a/cmds/dumpsys/tests/Android.bp b/cmds/dumpsys/tests/Android.bp
new file mode 100644
index 0000000..7698ed5
--- /dev/null
+++ b/cmds/dumpsys/tests/Android.bp
@@ -0,0 +1,19 @@
+// Build the unit tests for dumpsys
+cc_test {
+    name: "dumpsys_test",
+
+    srcs: ["dumpsys_test.cpp"],
+
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "libutils",
+    ],
+
+    static_libs: [
+        "libdumpsys",
+        "libgmock",
+    ],
+
+    clang: true,
+}
diff --git a/cmds/dumpsys/tests/dumpsys_test.cpp b/cmds/dumpsys/tests/dumpsys_test.cpp
new file mode 100644
index 0000000..a61cb00
--- /dev/null
+++ b/cmds/dumpsys/tests/dumpsys_test.cpp
@@ -0,0 +1,299 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include "../dumpsys.h"
+
+#include <vector>
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <android-base/file.h>
+#include <utils/String16.h>
+#include <utils/Vector.h>
+
+using namespace android;
+
+using ::testing::_;
+using ::testing::Action;
+using ::testing::ActionInterface;
+using ::testing::DoAll;
+using ::testing::Eq;
+using ::testing::HasSubstr;
+using ::testing::MakeAction;
+using ::testing::Not;
+using ::testing::Return;
+using ::testing::StrEq;
+using ::testing::Test;
+using ::testing::WithArg;
+using ::testing::internal::CaptureStderr;
+using ::testing::internal::CaptureStdout;
+using ::testing::internal::GetCapturedStderr;
+using ::testing::internal::GetCapturedStdout;
+
+class ServiceManagerMock : public IServiceManager {
+  public:
+    MOCK_CONST_METHOD1(getService, sp<IBinder>(const String16&));
+    MOCK_CONST_METHOD1(checkService, sp<IBinder>(const String16&));
+    MOCK_METHOD3(addService, status_t(const String16&, const sp<IBinder>&, bool));
+    MOCK_METHOD0(listServices, Vector<String16>());
+
+  protected:
+    MOCK_METHOD0(onAsBinder, IBinder*());
+};
+
+class BinderMock : public BBinder {
+  public:
+    BinderMock() {
+    }
+
+    MOCK_METHOD2(dump, status_t(int, const Vector<String16>&));
+};
+
+// gmock black magic to provide a WithArg<0>(WriteOnFd(output)) matcher
+typedef void WriteOnFdFunction(int);
+
+class WriteOnFdAction : public ActionInterface<WriteOnFdFunction> {
+  public:
+    explicit WriteOnFdAction(const std::string& output) : output_(output) {
+    }
+    virtual Result Perform(const ArgumentTuple& args) {
+        int fd = ::std::tr1::get<0>(args);
+        android::base::WriteStringToFd(output_, fd);
+    }
+
+  private:
+    std::string output_;
+};
+
+// Matcher used to emulate dump() by writing on its file descriptor.
+Action<WriteOnFdFunction> WriteOnFd(const std::string& output) {
+    return MakeAction(new WriteOnFdAction(output));
+}
+
+// Matcher for args using Android's Vector<String16> format
+// TODO: move it to some common testing library
+MATCHER_P(AndroidElementsAre, expected, "") {
+    std::ostringstream errors;
+    if (arg.size() != expected.size()) {
+        errors << " sizes do not match (expected " << expected.size() << ", got " << arg.size()
+               << ")\n";
+    }
+    int i = 0;
+    std::ostringstream actual_stream, expected_stream;
+    for (String16 actual : arg) {
+        std::string actual_str = String16::std_string(actual);
+        std::string expected_str = expected[i];
+        actual_stream << "'" << actual_str << "' ";
+        expected_stream << "'" << expected_str << "' ";
+        if (actual_str != expected_str) {
+            errors << " element mismatch at index " << i << "\n";
+        }
+        i++;
+    }
+
+    if (!errors.str().empty()) {
+        errors << "\nExpected args: " << expected_stream.str()
+               << "\nActual args: " << actual_stream.str();
+        *result_listener << errors.str();
+        return false;
+    }
+    return true;
+}
+
+// Custom action to sleep for timeout seconds
+ACTION_P(Sleep, timeout) {
+    sleep(timeout);
+}
+
+class DumpsysTest : public Test {
+  public:
+    DumpsysTest() : sm_(), dump_(&sm_), stdout_(), stderr_() {
+    }
+
+    void ExpectListServices(std::vector<std::string> services) {
+        Vector<String16> services16;
+        for (auto& service : services) {
+            services16.add(String16(service.c_str()));
+        }
+        EXPECT_CALL(sm_, listServices()).WillRepeatedly(Return(services16));
+    }
+
+    sp<BinderMock> ExpectCheckService(const char* name, bool running = true) {
+        sp<BinderMock> binder_mock;
+        if (running) {
+            binder_mock = new BinderMock;
+        }
+        EXPECT_CALL(sm_, checkService(String16(name))).WillRepeatedly(Return(binder_mock));
+        return binder_mock;
+    }
+
+    void ExpectDump(const char* name, const std::string& output) {
+        sp<BinderMock> binder_mock = ExpectCheckService(name);
+        EXPECT_CALL(*binder_mock, dump(_, _))
+            .WillRepeatedly(DoAll(WithArg<0>(WriteOnFd(output)), Return(0)));
+    }
+
+    void ExpectDumpWithArgs(const char* name, std::vector<std::string> args,
+                            const std::string& output) {
+        sp<BinderMock> binder_mock = ExpectCheckService(name);
+        EXPECT_CALL(*binder_mock, dump(_, AndroidElementsAre(args)))
+            .WillRepeatedly(DoAll(WithArg<0>(WriteOnFd(output)), Return(0)));
+    }
+
+    void ExpectDumpAndHang(const char* name, int timeout_s, const std::string& output) {
+        sp<BinderMock> binder_mock = ExpectCheckService(name);
+        EXPECT_CALL(*binder_mock, dump(_, _))
+            .WillRepeatedly(DoAll(Sleep(timeout_s), WithArg<0>(WriteOnFd(output)), Return(0)));
+    }
+
+    void CallMain(const std::vector<std::string>& args) {
+        const char* argv[1024] = {"/some/virtual/dir/dumpsys"};
+        int argc = (int)args.size() + 1;
+        int i = 1;
+        for (const std::string& arg : args) {
+            argv[i++] = arg.c_str();
+        }
+        CaptureStdout();
+        CaptureStderr();
+        int status = dump_.main(argc, const_cast<char**>(argv));
+        stdout_ = GetCapturedStdout();
+        stderr_ = GetCapturedStderr();
+        EXPECT_THAT(status, Eq(0));
+    }
+
+    void AssertRunningServices(const std::vector<std::string>& services) {
+        std::string expected("Currently running services:\n");
+        for (const std::string& service : services) {
+            expected.append("  ").append(service).append("\n");
+        }
+        EXPECT_THAT(stdout_, HasSubstr(expected));
+    }
+
+    void AssertOutput(const std::string& expected) {
+        EXPECT_THAT(stdout_, StrEq(expected));
+    }
+
+    void AssertOutputContains(const std::string& expected) {
+        EXPECT_THAT(stdout_, HasSubstr(expected));
+    }
+
+    void AssertDumped(const std::string& service, const std::string& dump) {
+        EXPECT_THAT(stdout_, HasSubstr("DUMP OF SERVICE " + service + ":\n" + dump));
+    }
+
+    void AssertNotDumped(const std::string& dump) {
+        EXPECT_THAT(stdout_, Not(HasSubstr(dump)));
+    }
+
+    void AssertStopped(const std::string& service) {
+        EXPECT_THAT(stderr_, HasSubstr("Can't find service: " + service + "\n"));
+    }
+
+    ServiceManagerMock sm_;
+    Dumpsys dump_;
+
+  private:
+    std::string stdout_, stderr_;
+};
+
+// Tests 'dumpsys -l' when all services are running
+TEST_F(DumpsysTest, ListAllServices) {
+    ExpectListServices({"Locksmith", "Valet"});
+    ExpectCheckService("Locksmith");
+    ExpectCheckService("Valet");
+
+    CallMain({"-l"});
+
+    AssertRunningServices({"Locksmith", "Valet"});
+}
+
+// Tests 'dumpsys -l' when a service is not running
+TEST_F(DumpsysTest, ListRunningServices) {
+    ExpectListServices({"Locksmith", "Valet"});
+    ExpectCheckService("Locksmith");
+    ExpectCheckService("Valet", false);
+
+    CallMain({"-l"});
+
+    AssertRunningServices({"Locksmith"});
+    AssertNotDumped({"Valet"});
+}
+
+// Tests 'dumpsys service_name' on a service is running
+TEST_F(DumpsysTest, DumpRunningService) {
+    ExpectDump("Valet", "Here's your car");
+
+    CallMain({"Valet"});
+
+    AssertOutput("Here's your car");
+}
+
+// Tests 'dumpsys -t 1 service_name' on a service that times out after 2s
+TEST_F(DumpsysTest, DumpRunningServiceTimeout) {
+    ExpectDumpAndHang("Valet", 2, "Here's your car");
+
+    CallMain({"-t", "1", "Valet"});
+
+    AssertOutputContains("SERVICE 'Valet' DUMP TIMEOUT (1s) EXPIRED");
+    AssertNotDumped("Here's your car");
+
+    // Must wait so binder mock is deleted, otherwise test will fail with a leaked object
+    sleep(1);
+}
+
+// Tests 'dumpsys service_name Y U NO HAVE ARGS' on a service that is running
+TEST_F(DumpsysTest, DumpWithArgsRunningService) {
+    ExpectDumpWithArgs("SERVICE", {"Y", "U", "NO", "HANDLE", "ARGS"}, "I DO!");
+
+    CallMain({"SERVICE", "Y", "U", "NO", "HANDLE", "ARGS"});
+
+    AssertOutput("I DO!");
+}
+
+// Tests 'dumpsys' with no arguments
+TEST_F(DumpsysTest, DumpMultipleServices) {
+    ExpectListServices({"running1", "stopped2", "running3"});
+    ExpectDump("running1", "dump1");
+    ExpectCheckService("stopped2", false);
+    ExpectDump("running3", "dump3");
+
+    CallMain({});
+
+    AssertRunningServices({"running1", "running3"});
+    AssertDumped("running1", "dump1");
+    AssertStopped("stopped2");
+    AssertDumped("running3", "dump3");
+}
+
+// Tests 'dumpsys --skip skipped3 skipped5', which should skip these services
+TEST_F(DumpsysTest, DumpWithSkip) {
+    ExpectListServices({"running1", "stopped2", "skipped3", "running4", "skipped5"});
+    ExpectDump("running1", "dump1");
+    ExpectCheckService("stopped2", false);
+    ExpectDump("skipped3", "dump3");
+    ExpectDump("running4", "dump4");
+    ExpectDump("skipped5", "dump5");
+
+    CallMain({"--skip", "skipped3", "skipped5"});
+
+    AssertRunningServices({"running1", "running4", "skipped3 (skipped)", "skipped5 (skipped)"});
+    AssertDumped("running1", "dump1");
+    AssertDumped("running4", "dump4");
+    AssertStopped("stopped2");
+    AssertNotDumped("dump3");
+    AssertNotDumped("dump5");
+}