#Implementierung von SerchimoMarvin auf meinen Testfälle: StringCalculator import unittest from feature7 import StringCalculator class TestStringCalculator(unittest.TestCase): def setUp(self): self.calculator = StringCalculator() def test_implements_interface(self): self.assertIsInstance(self.calculator, StringCalculator) def test_empty_string(self): self.assertEqual(self.calculator.add(""), 0) def test_single_number(self): self.assertEqual(self.calculator.add("1"), 1) def test_two_numbers(self): self.assertEqual(self.calculator.add("1,2"), 3) def test_multiple_numbers(self): self.assertEqual(self.calculator.add("1,2,3,4,5"), 15) def test_numbers_with_newline(self): self.assertEqual(self.calculator.add("1\n2,3"), 6) def test_numbers_with_multiple_newlines(self): self.assertEqual(self.calculator.add("1\n2\n3\n4\n5"), 15) def test_negative_number(self): with self.assertRaises(ValueError) as context: self.calculator.add("1,-2,3") self.assertEqual(str(context.exception), "Negatives not allowed: -2") def test_multiple_negative_numbers(self): with self.assertRaises(ValueError) as context: self.calculator.add("1,-2,-3,4") self.assertEqual(str(context.exception), "Negatives not allowed: -2, -3") def test_custom_delimiter(self): self.assertEqual(self.calculator.add("//;\n1;2"), 3) def test_custom_delimiter_with_newline(self): self.assertEqual(self.calculator.add("//;\n1;2\n3"), 6) def test_custom_delimiter_with_multiple_numbers(self): self.assertEqual(self.calculator.add("//|\n1|2|3|4"), 10) def test_numbers_greater_than_1000(self): self.assertEqual(self.calculator.add("2,1001"), 2) def test_numbers_greater_than_1000_with_custom_delimiter(self): self.assertEqual(self.calculator.add("//;\n2;1001"), 2) if __name__ == "__main__": unittest.main()