Add SpiralSector test

tests/classic_src/AbsBeamline/CMakeLists.txt

@@ -2,6 +2,7 @@ set (_SRCS
     OffsetTest.cpp
     RingTest.cpp
     SBend3DTest.cpp
+    SpiralSectorTest.cpp
     VariableRFCavityTest.cpp
 )
 
@@ -9,4 +10,4 @@ include_directories (
   ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
-add_sources(${_SRCS})
+add_sources(${_SRCS})
\ No newline at end of file