#!/usr/bin/env python3
#   Eos - Verifiable elections
#   Copyright © 2017  RunasSudo (Yingtong Li)
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU Affero General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU Affero General Public License for more details.
#
#   You should have received a copy of the GNU Affero General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

from unittest import *

import execjs

import importlib
import os
import sys
import types

test_suite = TestSuite()

# All the TestCase's we dynamically generate inherit from these classes
class BasePyTestCase(TestCase):
	@classmethod
	def setUpClass(cls):
		cls.impl.setUpClass()
	
	@classmethod
	def add_method(cls, method):
		def call_method(self, *args):
			cls.impl.impl = self
			func = getattr(cls.impl, method)
			return func(*args)
		setattr(cls, method, call_method)

class BaseJSTestCase(TestCase):
	@classmethod
	def setUpClass(cls):
		with open('eos/__javascript__/eos.js_tests.js', 'r') as f:
			code = f.read()
		cls.ctx = execjs.get().compile('var window={},navigator={};' + code + 'var test=window.eosjs_tests.' + cls.module + '.__all__.' + cls.name + '();test.setUpClass();')
	
	@classmethod
	def add_method(cls, method):
		def call_method(self, *args):
			# TODO: args
			return cls.ctx.eval('test.' + method + '()')
		setattr(cls, method, call_method)

# Test discovery
import eos.core.tests
for dirpath, dirnames, filenames in os.walk('eos'):
	if dirpath == 'eos':
		# Skip this file
		continue
	if 'tests.py' in filenames:
		module_name = dirpath.replace('/', '.') + '.tests'
		module = importlib.import_module(module_name)
		for name in dir(module):
			obj = getattr(module, name)
			if isinstance(obj, type):
				if issubclass(obj, eos.core.tests.EosTestCase):
					if obj.__module__ != module_name:
						continue
					if len(sys.argv) > 1 and not obj.__module__.startswith(sys.argv[1]):
						continue
					
					impl = obj()
					cls_py = type(name + 'ImplPy', (BasePyTestCase,), {'impl': impl})
					cls_js = type(name + 'ImplJS', (BaseJSTestCase,), {'module': module_name, 'name': name})
					for method in dir(impl):
						method_val = getattr(impl, method)
						if isinstance(method_val, types.MethodType) and not hasattr(cls_py, method):
							# Python
							if not getattr(method_val, '_js_only', False):
								cls_py.add_method(method)
								if method.startswith('test_'):
									test_case = cls_py(method)
									test_suite.addTest(test_case)
							
							# Javascript
							if not getattr(method_val, '_py_only', False):
								if method.startswith('test_'):
									cls_js.add_method(method)
									test_case = cls_js(method)
									test_suite.addTest(test_case)

TextTestRunner(verbosity=3, failfast=True).run(test_suite)