import unittest
import os
from yaksh import code_evaluator as evaluator
from yaksh.java_code_evaluator import JavaCodeEvaluator
from yaksh.settings import SERVER_TIMEOUT


class JavaEvaluationTestCases(unittest.TestCase):
    def setUp(self):
        self.test_case_data = [
            {"test_case": "java_files/main_square.java"}
        ]
        self.in_dir = "/tmp"
        evaluator.SERVER_TIMEOUT = 9
        self.timeout_msg = ("Code took more than {0} seconds to run. "
            "You probably have an infinite loop in"
            " your code.").format(evaluator.SERVER_TIMEOUT)

    def tearDown(self):
        evaluator.SERVER_TIMEOUT = 2

    def test_correct_answer(self):
        user_answer = "class Test {\n\tint square_num(int a) {\n\treturn a*a;\n\t}\n}"
        get_class = JavaCodeEvaluator(self.in_dir)
        kwargs = {'user_answer': user_answer, 
                    'test_case_data': self.test_case_data
                }
        result = get_class.evaluate(**kwargs)
        self.assertEquals(result.get('error'), "Correct answer")
        self.assertTrue(result.get('success'))

    def test_incorrect_answer(self):
        user_answer = "class Test {\n\tint square_num(int a) {\n\treturn a;\n\t}\n}"
        get_class = JavaCodeEvaluator(self.in_dir)
        kwargs = {'user_answer': user_answer, 
                    'test_case_data': self.test_case_data
                }
        result = get_class.evaluate(**kwargs)
        self.assertFalse(result.get('success'))
        self.assertIn("Incorrect:", result.get('error'))
        self.assertTrue(result.get('error').splitlines > 1)

    def test_error(self):
        user_answer = "class Test {\n\tint square_num(int a) {\n\treturn a*a"
        get_class = JavaCodeEvaluator(self.in_dir)
        kwargs = {'user_answer': user_answer, 
                    'test_case_data': self.test_case_data
                }
        result = get_class.evaluate(**kwargs) 
        self.assertFalse(result.get("success"))
        self.assertTrue("Error" in result.get("error"))

    def test_infinite_loop(self):
        user_answer = "class Test {\n\tint square_num(int a) {\n\t\twhile(0==0){\n\t\t}\n\t}\n}"
        get_class = JavaCodeEvaluator(self.in_dir)
        kwargs = {'user_answer': user_answer, 
                    'test_case_data': self.test_case_data
                }
        result = get_class.evaluate(**kwargs) 
        self.assertFalse(result.get("success"))
        self.assertEquals(result.get("error"), self.timeout_msg)


if __name__ == '__main__':
    unittest.main()
