Tests für Breakpoints und unbekannte Tokens

info4/kapitel-8/Interpreter/test_loop_interpreter.py

 from interpreter import interpret
 import unittest
+from unittest import mock
 
+def input_exit(prompt):
+    return "EXIT"
+
+def input_continue(prompt):
+    return ""
+
+def init_without_tokens(self, regex_to_token, program):
+    self.regex_to_token = {}
+    self.program = program
+    self.current_position = 0
 
 class InterpreterTest(unittest.TestCase):
     def test_assignment_default_zero(self):
@@ -207,3 +218,17 @@ class InterpreterTest(unittest.TestCase):
         self.assertEqual(interpret('''x2:=3;
         x0:=x2+2'''), 5)
         self.assertEqual(interpret('x1:=x1-2;\n x0:=x1+2'), 2)
+
+    @mock.patch('interpreter.input', side_effect=input_exit)
+    def test_break_exit(self, input):
+        self.assertEqual(interpret('x1:=2; BREAK x0:=2'), -1)
+        self.assertEqual(interpret('LOOP x1 DO BREAK x2:= 2 END'), -1)
+
+    @mock.patch('interpreter.input', side_effect=input_continue)
+    def test_break_continue(self, input):
+        self.assertEqual(interpret('x1:=2; LOOP x1 DO x0:=x0+2 BREAK END'), 4)
+
+    @mock.patch('lexer.Lexer.__init__', init_without_tokens)
+    def test_unknown_tokens(self):
+        with self.assertRaises(SyntaxError):
+            interpret('BLIBLABLUB')
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