Add test code for pallets-eco#114

The test code to help to try fix the bug that repeating calling
constructor (pallets-eco#114).
pallets-eco#114

testRepeatConstuctorError.py

@@ -0,0 +1,31 @@
+from flask import Flask
+from flask_classful import FlaskView, route
+
+app = Flask(__name__)
+
+class AppRouting(FlaskView):
+	route_base = '/'
+
+	def __init__(self):
+		print("--------constructor---------")
+		return 
+
+	def test1(self):
+		return "test1"
+
+	def test2(self):	
+		return "test2"
+
+	def test3(self):
+		return "test3"
+
+	def test4(self):
+		return "test4"
+
+	def test5(self):
+		return "test5"
+
+
+if __name__ == '__main__':
+	AppRouting.register(app)
+	app.run()