Tidy up test sources:

Test support classes are moved to beast/extras/test.

test/http/CMakeLists.txt

@@ -0,0 +1,44 @@
+# Part of Beast
+
+GroupSources(extras/beast beast)
+GroupSources(include/beast beast)
+GroupSources(test/http "/")
+
+add_executable (http-tests
+    ${BEAST_INCLUDES}
+    ../../extras/beast/unit_test/main.cpp
+    basic_headers.cpp
+    basic_parser_v1.cpp
+    body_type.cpp
+    empty_body.cpp
+    headers.cpp
+    message.cpp
+    message_v1.cpp
+    parse_error.cpp
+    parser_v1.cpp
+    read.cpp
+    reason.cpp
+    resume_context.cpp
+    rfc2616.cpp
+    rfc7230.cpp
+    status.cpp
+    streambuf_body.cpp
+    string_body.cpp
+    type_check.cpp
+    write.cpp
+)
+
+if (NOT WIN32)
+    target_link_libraries(http-tests ${Boost_LIBRARIES})
+endif()
+
+add_executable (bench-tests
+    ${BEAST_INCLUDES}
+    ../../extras/beast/unit_test/main.cpp
+    nodejs_parser.cpp
+    parser_bench.cpp
+)
+
+if (NOT WIN32)
+    target_link_libraries(parser-bench ${Boost_LIBRARIES})
+endif()

test/http/read.cpp

@@ -8,11 +8,10 @@
 // Test that header file is self-contained.
 #include <beast/http/read.hpp>
 
-#include "../fail_stream.hpp"
-#include "../string_stream.hpp"
-#include "../yield_to.hpp"
-
 #include <beast/http/streambuf_body.hpp>
+#include <beast/test/fail_stream.hpp>
+#include <beast/test/string_stream.hpp>
+#include <beast/test/yield_to.hpp>
 #include <beast/unit_test/suite.hpp>
 #include <boost/asio/spawn.hpp>