add description_component and unit tests

include/boost/bioseq/components/description.hpp

+//----------------------------------------------------------------------------//
+//  Copyright (c) 2018 Armin Sobhani <arminms@gmail.com>
+//
+//  Distributed under the Boost Software License Version 1.0.
+//  (See accompanying ${file} LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//----------------------------------------------------------------------------//
+
+#ifndef BOOST_BIOSEQ_COMPONENTS_DESCRIPTION_HPP
+#define BOOST_BIOSEQ_COMPONENTS_DESCRIPTION_HPP
+
+namespace boost {
+namespace bioseq {
+namespace component {
+
+//----------------------------------------------------------------------------//
+
+template <typename CharT = char>
+    class description_component
+{
+public:
+/// \name Construction
+//@{
+    description_component()
+    {}
+//@}
+
+/// \name Attributes
+//@{
+    std::basic_string<CharT> description() const
+    {   return _description;   }
+
+    void description(std::basic_string<CharT> dscr)
+    {   _description = dscr;   }
+//@}
+
+// Implementation
+protected:
+    std::basic_string<CharT> _description;
+};
+
+template <typename CharT = char>
+    using description = description_component<CharT>;
+
+//----------------------------------------------------------------------------//
+
+} // end component namespace
+} // end bioseq namespace
+} // end boost namespace
+
+#endif  // BOOST_BIOSEQ_COMPONENTS_DESCRIPTION_HPP

include/boost/bioseq/has_component.hpp

@@ -45,8 +45,9 @@ struct has_##component                                                         \
 
 //----------------------------------------------------------------------------//
 
-GENERATE_HAS_COMPONENT(c_str)                     // create has_c_str
-GENERATE_HAS_COMPONENT(name_component)            // create has_name_component
+GENERATE_HAS_COMPONENT(c_str)                // create has_c_str
+GENERATE_HAS_COMPONENT(name_component)       // create has_name_component
+GENERATE_HAS_COMPONENT(description_component)// create has_description_component
 
 //----------------------------------------------------------------------------//
 

include/boost/bioseq/sequence.hpp

@@ -68,6 +68,7 @@ public:
     {
         // std::cout << "copy called" << std::endl;
         copy_name(other, has_name_component<self_type>());
+        copy_dscr(other, has_description_component<self_type>());
     }
 
     sequence_host(
@@ -79,6 +80,9 @@ public:
         move_name(
             std::forward<sequence_host>(other)
         ,   has_name_component<self_type>() );
+        move_dscr(
+            std::forward<sequence_host>(other)
+        ,   has_description_component<self_type>() );
     }
 
     sequence_host(
@@ -92,11 +96,19 @@ public:
     {   self_type::_name = other._name;   }
     void copy_name(const sequence_host& other, std::false_type)
     {}
+    void copy_dscr(const sequence_host& other, std::true_type)
+    {   self_type::_description = other._description;   }
+    void copy_dscr(const sequence_host& other, std::false_type)
+    {}
 
     void move_name(sequence_host&& other, std::true_type)
     {   self_type::_name = std::move(other._name);   }
     void move_name(sequence_host&& other, std::false_type)
     {}
+    void move_dscr(sequence_host&& other, std::true_type)
+    {   self_type::_description = std::move(other._description);   }
+    void move_dscr(sequence_host&& other, std::false_type)
+    {}
 };
 
 //----------------------------------------------------------------------------//

test/CMakeLists.txt

@@ -48,4 +48,5 @@ endfunction()
 
 add_bioseq_test("sequence" test_sequence.cpp)
 add_bioseq_test("name.component" test_name_component.cpp)
+add_bioseq_test("description.component" test_description_component.cpp)
 add_bioseq_test("io.fasta" test_io_fasta.cpp)

test/test_description_component.cpp

+//----------------------------------------------------------------------------//
+//  Copyright (c) 2018 Armin Sobhani <arminms@gmail.com>
+//
+//  Distributed under the Boost Software License Version 1.0.
+//  (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+//----------------------------------------------------------------------------//
+
+#define BOOST_TEST_MODULE TestDescriptionComponent
+#include <boost/mpl/list.hpp>
+#include <boost/test/unit_test.hpp>
+
+#include <boost/bioseq/type_traits.hpp>
+#include <boost/bioseq/components/description.hpp>
+#include <boost/bioseq/sequence.hpp>
+
+namespace bsq = boost::bioseq;
+
+typedef
+    bsq::sequence_host
+<
+    char
+,   std::allocator
+,   std::vector
+,   bsq::component::description<>
+>   seq;
+
+typedef
+    bsq::sequence_host
+<
+    char
+,   std::allocator
+,   std::vector
+>   seq_nodscr;
+
+// adding sequence types to the test list
+typedef boost::mpl::list<seq> seq_type;
+typedef boost::mpl::list<seq_nodscr> seqnd_type;
+
+BOOST_AUTO_TEST_CASE_TEMPLATE(copy_constructor, T, seq_type)
+{
+    T s;
+    s.description("copied");
+    T c(s);
+
+    BOOST_CHECK( s.empty() );
+    BOOST_CHECK_EQUAL( s.description(), "copied" );
+    BOOST_CHECK( c.empty() );
+    BOOST_CHECK_EQUAL( c.description(), "copied" );
+}
+
+BOOST_AUTO_TEST_CASE_TEMPLATE(move_constructor, T, seq_type)
+{
+    T s;
+    s.description("moved");
+    T m(std::move(s));
+
+    BOOST_CHECK( s.empty() );
+    BOOST_CHECK( s.description().empty() );
+    BOOST_CHECK( m.empty() );
+    BOOST_CHECK_EQUAL( m.description(), "moved" );
+}
+
+BOOST_AUTO_TEST_CASE_TEMPLATE(copy_constructor_nodscr, T, seqnd_type)
+{
+    T s;
+    T c(s);
+
+    BOOST_CHECK( s.empty() );
+    BOOST_CHECK( c.empty() );
+}
+
+BOOST_AUTO_TEST_CASE_TEMPLATE(move_constructor_noname, T, seqnd_type)
+{
+    T s;
+    T m(std::move(s));
+
+    BOOST_CHECK( s.empty() );
+    BOOST_CHECK( m.empty() );
+}