Move the tests of book chapters from test/ into tests/book

python/paddle/v2/framework/tests/CMakeLists.txt

@@ -3,3 +3,5 @@ string(REPLACE ".py" "" TEST_OPS "${TEST_OPS}")
 foreach(src ${TEST_OPS})
     py_test(${src} SRCS ${src}.py)
 endforeach()
+
+add_subdirectory(book)

python/paddle/v2/framework/tests/book/CMakeLists.txt

@@ -0,0 +1,5 @@
+file(GLOB TEST_OPS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "test_*.py")
+string(REPLACE ".py" "" TEST_OPS "${TEST_OPS}")
+foreach(src ${TEST_OPS})
+    py_test(${src} SRCS ${src}.py)
+endforeach()