test_try_catch.py

from unittest import expectedFailure

from ..utils import TranspileTestCase


class TryExceptTests(TranspileTestCase):
    def test_try_except(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except:
                print("Got an error")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except:
                print("Got an error")
            print('Done.')
            """)

    def test_try_except_unnamed(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got an error")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got an error")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got an error")
            print('Done.')
            """)

    def test_try_except_named(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            print('Done.')
            """)

    def test_try_multiple_except(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        # Caught first exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        # Caught second exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError:
                print("Got an AttributeError")
            except NameError:
                print("Got a NameError")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

    def test_try_multiple_except_named(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        # Caught first exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

        # Caught second exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError as e:
                print("Got an AttributeError", e)
            except NameError as e:
                print("Got a NameError", e)
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

    def test_try_multiple_match_except_unnamed(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except (NameError, TypeError):
                print("Got a NameError or TypeError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        # Caught first exception, first handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except (NameError, TypeError):
                print("Got a NameError or TypeError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        # Caught second exception, first handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except (TypeError, NameError):
                print("Got a TypeError or NameError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        # Caught first exception, second handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError:
                print("Got an AttributeError")
            except (NameError, TypeError):
                print("Got a NameError or TypeError")
            print('Done.')
            """)

        # Caught second exception, second handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError:
                print("Got an AttributeError")
            except (TypeError, NameError):
                print("Got a TypeError or NameError")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except (NameError, TypeError):
                print("Got a NameError or TypeError")
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

    def test_try_multiple_match_except_named(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except (NameError, TypeError) as e:
                print("Got a NameError or TypeError", e)
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

        # Caught first exception, first handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except (NameError, TypeError) as e:
                print("Got a NameError or TypeError", e)
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

        # Caught second exception, first handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except (TypeError, NameError) as e:
                print("Got a TypeError or NameError", e)
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

        # Caught first exception, second handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError as e:
                print("Got an AttributeError", e)
            except (NameError, TypeError) as e:
                print("Got a NameError or TypeError", e)
            print('Done.')
            """)

        # Caught second exception, second handler
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError as e:
                print("Got an AttributeError", e)
            except (TypeError, NameError) as e:
                print("Got a TypeError or NameError", e)
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except (NameError, TypeError) as e:
                print("Got a NameError or TypeError", e)
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

    def test_try_multiple_except_mixed1(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            print('Done.')
            """)

    def test_try_multiple_except_mixed2(self):
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError:
                print("Got an AttributeError")
            print('Done.')
            """)

    def test_try_multiple_except_mixed3(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError:
                print("Got an AttributeError")
            except:
                print("Got an anonymous error")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError:
                print("Got an AttributeError")
            except:
                print("Got an anonymous error")
            print('Done.')
            """)

        # Caught as bucket case
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            except AttributeError:
                print("Got an AttributeError")
            except:
                print("Got an anonymous error")
            print('Done.')
            """)

    def test_try_catch_in_loop(self):
        self.assertCodeExecution("""
            for x in range(2):
                try:
                    print('success', next(iter([])))
                except Exception:
                    print('whoops')
            """)

    @expectedFailure
    def test_try_nested(self):
        self.assertCodeExecution("""
            try:
                print('outer try')
                try:
                    print('inner try')
                except:
                    print('inner except')
            except:
                print('outer except')
        """)

    @expectedFailure
    def test_try_if_else_in_try(self):
        self.assertCodeExecution("""
            try:
                if 1 == 2:
                    print('1 == 2!?')
                else:
                    print('1 != 2')
            except:
                print('except')
        """)


class TryExceptFinallyTests(TranspileTestCase):
    def test_try_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Uncaugt Exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

    def test_try_except_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except:
                print("Got an error")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught Exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except:
                print("Got an error")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

    def test_try_except_unnamed_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got an error")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got an error")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got an error")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

    def test_try_except_named_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError as e:
                print("Got a NameError", e)
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

    def test_try_multiple_except_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught first exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught second exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except AttributeError as e:
                print("Got an AttributeError", e)
            except NameError:
                print("Got a NameError")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            finally:
                print("Do final cleanup")
            print('Done.')
            """)


class TryExceptElseTests(TranspileTestCase):
    def test_try_except_else(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except:
                print("Got an error")
            else:
                print("Do else handling")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except:
                print("Got an error")
            else:
                print("Do else handling")
            print('Done.')
            """)

    def test_try_except_unnamed_else(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got an error")
            else:
                print("Do else handling")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got an error")
            else:
                print("Do else handling")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got an error")
            else:
                print("Do else handling")
            print('Done.')
            """)

    def test_try_multiple_except_else(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            else:
                print("Do else handling")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            else:
                print("Do else handling")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            else:
                print("Do else handling")
            print('Done.')
            """)


class TryExceptElseFinallyTests(TranspileTestCase):
    def test_try_except_else_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except:
                print("Got an error")
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except:
                print("Got an error")
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

    def test_try_except_unnamed_else_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj = 3
                print('OK')
            except NameError:
                print("Got an error")
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got an error")
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got an error")
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

    def test_try_multiple_except_else_finally(self):
        # No exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Caught exception
        self.assertCodeExecution("""
            try:
                obj.no_such_attribute
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)

        # Uncaught exception
        self.assertCodeExecution("""
            try:
                obj = int('asdf')
                print('OK')
            except NameError:
                print("Got a NameError")
            except AttributeError as e:
                print("Got an AttributeError", e)
            else:
                print("Do else handling")
            finally:
                print("Do final cleanup")
            print('Done.')
            """)