Add RawPDU c'tor for const payload_type&. (#253)

* Add RawPDU c'tor for const payload_type &.

* Correct indentation.

include/tins/rawpdu.h

@@ -96,6 +96,16 @@ public:
     RawPDU(ForwardIterator start, ForwardIterator end) 
     : payload_(start, end) { }
 
+    /**
+     * \brief Creates an instance of RawPDU from a payload_type.
+     *
+     * The payload is copied into the RawPDU's internal buffer.
+     *
+     * \param data The payload to use.
+     */
+    RawPDU(const payload_type & data)
+            : payload_(data) { }
+
     #if TINS_IS_CXX11
         /** 
          * \brief Creates an instance of RawPDU from a payload_type.

tests/src/CMakeLists.txt

@@ -78,6 +78,7 @@ CREATE_TEST(network_interface)
 CREATE_TEST(pdu)
 CREATE_TEST(pdu_iterator)
 CREATE_TEST(pppoe)
+CREATE_TEST(raw_pdu)
 CREATE_TEST(radiotap)
 CREATE_TEST(rc4_eapol)
 CREATE_TEST(rsn_eapol)

tests/src/raw_pdu_test.cpp

@@ -0,0 +1,21 @@
+#include <gtest/gtest.h>
+#include <tins/rawpdu.h>
+
+using namespace Tins;
+
+class RawPDUTest : public testing::Test {
+public:
+};
+
+TEST_F(RawPDUTest, ConstructFromPayloadType) {
+    RawPDU::payload_type payload;
+    payload.push_back(0x01);
+    payload.push_back(0x02);
+
+    RawPDU raw = RawPDU(payload);
+    EXPECT_EQ(payload, raw.payload());
+
+    // The payload should have been copied
+    payload.push_back(0x03);
+    EXPECT_NE(payload, raw.payload());
+}