[4106] Implemented test for the DHCPv4 endpoint of DHCPv4o6 IPC.

src/bin/dhcp4/tests/Makefile.am

@@ -92,6 +92,7 @@ dhcp4_unittests_SOURCES += release_unittest.cc
 dhcp4_unittests_SOURCES += out_of_range_unittest.cc
 dhcp4_unittests_SOURCES += decline_unittest.cc
 dhcp4_unittests_SOURCES += kea_controller_unittest.cc
+dhcp4_unittests_SOURCES += dhcp4_dhcp4o6_ipc_unittest.cc
 
 nodist_dhcp4_unittests_SOURCES = marker_file.h test_libraries.h
 

src/bin/dhcp4/tests/dhcp4_dhcp4o6_ipc_unittest.cc

@@ -0,0 +1,115 @@
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <config.h>
+#include <dhcp/pkt4o6.h>
+#include <dhcp/pkt6.h>
+#include <dhcp/tests/iface_mgr_test_config.h>
+#include <dhcp4/dhcp4_dhcp4o6_ipc.h>
+#include <dhcpsrv/cfgmgr.h>
+#include <dhcpsrv/testutils/dhcp4o6_test_ipc.h>
+#include <gtest/gtest.h>
+#include <stdint.h>
+
+using namespace isc;
+using namespace isc::dhcp;
+using namespace isc::dhcp::test;
+using namespace isc::util;
+
+namespace {
+
+/// @brief Port number used in tests.
+const uint16_t TEST_PORT = 32000;
+
+/// @brief Define short name for the test IPC.
+typedef Dhcp4o6TestIpc TestIpc;
+
+/// @brief Test fixture class for DHCPv4 endpoint of DHCPv4o6 IPC.
+class Dhcp4o6IpcTest : public ::testing::Test {
+public:
+
+    /// @brief Constructor
+    ///
+    /// Configures IPC to use a test port. It also provides a fake
+    /// configuration of interfaces.
+    Dhcp4o6IpcTest()
+        : iface_mgr_test_config_(true) {
+        configurePort(TEST_PORT);
+    }
+
+    /// @brief Configure DHCP4o6 port.
+    ///
+    /// @param port New port.
+    void configurePort(const uint16_t port);
+
+    /// @brief Creates an instance of the DHCPv4o6 Message option.
+    ///
+    /// @return Pointer to the instance of the DHCPv4-query Message option.
+    OptionPtr createDHCPv4MsgOption() const;
+
+private:
+
+    /// @brief Provides fake configuration of interfaces.
+    IfaceMgrTestConfig iface_mgr_test_config_;
+
+};
+
+void
+Dhcp4o6IpcTest::configurePort(const uint16_t port) {
+    CfgMgr::instance().getStagingCfg()->setDhcp4o6Port(port);
+}
+
+OptionPtr
+Dhcp4o6IpcTest::createDHCPv4MsgOption() const {
+    // Create the DHCPv4 message.
+    Pkt4Ptr pkt(new Pkt4(DHCPREQUEST, 1234));
+    // Make a wire representation of the DHCPv4 message.
+    pkt->pack();
+    OutputBuffer& output_buffer = pkt->getBuffer();
+    const uint8_t* data = static_cast<const uint8_t*>(output_buffer.getData());
+    OptionBuffer option_buffer(data, data + output_buffer.getLength());
+
+    // Create the DHCPv4 Message option holding the created message.
+    OptionPtr opt_msg(new Option(Option::V6, D6O_DHCPV4_MSG, option_buffer));
+    return (opt_msg);
+}
+
+// This test verifies that the DHCPv4 endpoint of the DHCPv4o6 IPC can
+// receive messages.
+TEST_F(Dhcp4o6IpcTest, receive) {
+    // Create instance of the IPC endpoint under test.
+    Dhcp4o6Ipc& ipc = Dhcp4o6Ipc::instance();
+    // Create instance of the IPC endpoint being used as a source of messages.
+    TestIpc src_ipc(TEST_PORT, TestIpc::ENDPOINT_TYPE_V6);
+
+    // Open both endpoints.
+    ASSERT_NO_THROW(ipc.open());
+    ASSERT_NO_THROW(src_ipc.open());
+
+    // Create message to be sent over IPC.
+    Pkt6Ptr pkt(new Pkt6(DHCPV6_DHCPV4_QUERY, 1234));
+    pkt->addOption(createDHCPv4MsgOption());
+    pkt->setIface("eth0");
+    ASSERT_NO_THROW(pkt->pack());
+
+    // Send and wait up to 1 second to receive it.
+    ASSERT_NO_THROW(src_ipc.send(pkt));
+    ASSERT_NO_THROW(IfaceMgr::instance().receive6(1, 0));
+
+    // Make sure that the message has been received.
+    Pkt4o6Ptr pkt_received = ipc.getReceived();
+    ASSERT_TRUE(pkt_received);
+}
+
+} // end of anonymous namespace

src/lib/dhcpsrv/tests/dhcp4o6_ipc_unittest.cc

@@ -120,10 +120,10 @@ protected:
     static Pkt6Ptr createDHCPv4o6MsgWithAnyVendorOption(const uint16_t msg_type,
                                                         const uint16_t postfix);
 
-    /// @brief Creates an instance of the DHCPv4-query Message option.
+    /// @brief Creates an instance of the DHCPv4o6 Message option.
     ///
     /// @param src Type of the source endpoint. It can be 4 or 6.
-    /// @return Pointer to the instance of the DHCPv4-query Message option.
+    /// @return Pointer to the instance of the option.
     static OptionPtr createDHCPv4MsgOption(const TestIpc::EndpointType& src);
 
     /// @brief Tests sending and receiving packets over the IPC.