add more test

requirements-dev.txt

@@ -6,7 +6,6 @@ appdirs==1.4.4
 async-generator==1.10
 asyncclick==7.0.9
 asyncpg==0.20.1
-asynctest==0.13.0
 atomicwrites==1.4.0; sys_platform == "win32"
 attrs==19.3.0
 black==19.10b0
@@ -16,7 +15,7 @@ click==7.1.2
 colorama==0.4.3; sys_platform == "win32"
 cryptography==2.9.2
 execnet==1.7.1
-flake8==3.8.1
+flake8==3.8.2
 iso8601==0.1.12; sys_platform == "win32" or implementation_name != "cpython"
 isort==4.3.21
 mccabe==0.6.1
@@ -35,14 +34,15 @@ pymysql==0.9.2
 pyparsing==2.4.7
 pypika==0.37.6
 pytest==5.4.2
+pytest-asyncio==0.12.0
 pytest-forked==1.1.3
 pytest-xdist==1.32.0
 regex==2020.5.14
-six==1.14.0
+six==1.15.0
 sniffio==1.1.0
 taskipy==1.2.1
 toml==0.10.1
--e git+https://github.com/long2ice/tortoise-orm.git@1f67b7a0ca1384365d6ff89d9e245e733166d1a6#egg=tortoise-orm
+tortoise-orm==0.16.12
 typed-ast==1.4.1
 typing-extensions==3.7.4.2
 wcwidth==0.1.9