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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,82 @@ """Tests for the autocast module.""" import pytest from pytest import param from archeion import autocast @pytest.mark.parametrize( "value, expected", [ param("true", True, id="true"), param("false", False, id="false"), param("True", True, id="True"), param("False", False, id="False"), ], ) def test_boolify_valid(value: str, expected: bool) -> None: """Test the boolify function.""" assert autocast.boolify(value) == expected @pytest.mark.parametrize( "value", [ param(1, id="int"), param("string", id="str"), ], ) def test_boolify_invalid(value): """Test the boolify function.""" with pytest.raises(ValueError): autocast.boolify(value) def test_noneify(): """noneify should return None if the string is None.""" assert autocast.noneify("None") is None with pytest.raises(ValueError): autocast.noneify("0") @pytest.mark.parametrize( "value,expected", [ param("1,2,3,4", [1, 2, 3, 4], id="int"), param("s,t,r", ["s", "t", "r"], id="str"), param("1.1,2,3.14", [1.1, 2.0, 3.14], id="float"), param("True,False,true,false", [True, False, True, False], id="bool"), param("None,None,None", [None, None, None], id="none"), ], ) def test_listify_valid(value, expected): """Test the listify function.""" assert autocast.listify(value) == expected def test_listify_invalid(): """Every element of the list should be the same type.""" with pytest.raises(TypeError): autocast.listify("True,1,None") with pytest.raises(ValueError): autocast.listify("I am not a list") @pytest.mark.parametrize( "value,expected", [ param("true", True, id="true"), param("false", False, id="false"), param("True", True, id="True"), param("False", False, id="False"), param("1,2,3,4", [1, 2, 3, 4], id="int-list"), param("s,t,r", ["s", "t", "r"], id="str-list"), param("1", 1, id="int"), param("1.0", 1.0, id="float"), param(1, 1, id="real-int"), ], ) def test_autocast_value(value, expected): """Test basic functionality of autocast_value.""" assert autocast.autocast_value(value) == expected -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,80 @@ """ Automatically detect the true Python type of a string and cast it to the correct type. Based on https://github.com/cgreer/cgAutoCast/blob/master/cgAutoCast.py """ import contextlib from typing import Any def boolify(s: str) -> bool: """Convert a string to a boolean.""" if s in {"True", "true"}: return True if s in {"False", "false"}: return False raise ValueError("Not Boolean Value!") def noneify(s: str) -> None: """Convert a string to None.""" if s == "None": return None raise ValueError("Not None Value!") def listify(s: str) -> list: """ Convert a string representation of a list into list of homogenous basic types. Type of elements in list is determined via first element. Successive elements are cast to that type. Args: s: String representation of a list. Raises: ValueError: If string does not represent a list. TypeError: If string does not represent a list of homogenous basic types. Returns: List of homogenous basic types. """ if "," not in s: raise ValueError("Not a List") # derive the type of the variable str_list = s.split(",") element_caster = str for caster in (boolify, int, float, noneify, element_caster): with contextlib.suppress(ValueError): caster(str_list[0]) # type: ignore[operator] element_caster = caster # type: ignore[assignment] break # cast all elements try: return [element_caster(x) for x in str_list] except ValueError as e: raise TypeError("Autocasted list must be all same type") from e def autocast_value(var: Any) -> Any: """ Guess the string representation of the variable's type. Args: var: Value to autocast. Returns: The autocasted value. """ if not isinstance(var, str): # don't need to guess non-string types return var # guess string representation of var for caster in (boolify, int, float, noneify, listify): with contextlib.suppress(ValueError): return caster(var) # type: ignore[operator] return var