[Add] skip some tests under osx

setup.py

@@ -92,13 +92,16 @@ vnoes = Extension(
     libraries=["oes_api"],
     extra_compile_args=compiler_flags,
     extra_link_args=extra_link_args,
+    runtime_library_dirs=["$ORIGIN"],
     depends=[],
     language="cpp",
 )
 
-if platform.uname().system == "Windows":
+if platform.system() == "Windows":
     # use pre-built pyd for windows ( support python 3.7 only )
     ext_modules = []
+elif platform.system() == "Darwin":
+    ext_modules = []
 else:
     ext_modules = [vnctptd, vnctpmd, vnoes]
 

tests/test_import_all.py

@@ -1,5 +1,6 @@
 # flake8: noqa
 import unittest
+import platform
 
 
 # noinspection PyUnresolvedReferences
@@ -24,12 +25,14 @@ class ImportTest(unittest.TestCase):
     def test_import_ib_gateway(self):
         from vnpy.gateway.ib import IbGateway
 
+    @unittest.skipIf(platform.system() == "Darwin", "Not supported yet under osx")
     def test_import_ctp_gateway(self):
         from vnpy.gateway.ctp import CtpGateway
 
     def test_import_tiger_gateway(self):
         from vnpy.gateway.tiger import TigerGateway
 
+    @unittest.skipIf(platform.system() == "Darwin", "Not supported yet under osx")
     def test_import_oes_gateway(self):
         from vnpy.gateway.oes import OesGateway