def test_dtype_constr_errors(self):
# Create a symbol table with no types in it, so we can
# make some isolated type constructors for testing
sym = datashape.TypeSymbolTable(bare=True)
# A limited set of dtypes for testing
sym.dtype['int8'] = ct.int8
sym.dtype['uint16'] = ct.uint16
sym.dtype['float64'] = ct.float64
# Arbitrary dtype constructor that does nothing
def _type_constr(*args, **kwargs):
return ct.float32
sym.dtype_constr['tcon'] = _type_constr
# Require closing "]"
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[', sym)
# Type constructors should always have an argument
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[]', sym)
# Unknown type
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[unknown]', sym)
# Missing parameter value
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[x=', sym)
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[x=]', sym)
# A positional arg cannot be after a keyword arg
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[x=A, B]', sym)
# List args must be homogeneous
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[[0, "x"]]', sym)
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[[0, X]]', sym)
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[["x", 0]]', sym)
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[["x", X]]', sym)
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[[X, 0]]', sym)
self.assertRaises(DataShapeSyntaxError, parse, 'tcon[[X, "x"]]', sym)
def test_binary_dtype_constr(self):
# Create a symbol table with no types in it, so we can
# make some isolated type constructors for testing
sym = datashape.TypeSymbolTable(bare=True)
# A limited set of dtypes for testing
sym.dtype['int8'] = ct.int8
sym.dtype['uint16'] = ct.uint16
sym.dtype['float64'] = ct.float64
# TypeVar type constructor
sym.dtype_constr['typevar'] = ct.TypeVar
# Binary dtype constructor that asserts on the argument values
expected_arg = [None, None]
def _binary_type_constr(a, b):
self.assertEqual(a, expected_arg[0])
self.assertEqual(b, expected_arg[1])
expected_arg[0] = None
expected_arg[1] = None
return ct.float32
sym.dtype_constr['binary'] = _binary_type_constr
def assertExpectedParse(ds_str, expected_a, expected_b):
# Set the expected value, and call the parser
expected_arg[0] = expected_a
expected_arg[1] = expected_b
self.assertEqual(parse(ds_str, sym), ct.DataShape(ct.float32))
# Make sure the expected value was actually run by
# check that it reset the expected value to None
self.assertEqual(expected_arg, [None, None],
'The test binary type constructor did not run')
# Positional args
assertExpectedParse('binary[1, 0]', 1, 0)
assertExpectedParse('binary[0, "test"]', 0, 'test')
assertExpectedParse('binary[int8, "test"]', ct.DataShape(ct.int8),
'test')
assertExpectedParse('binary[[1,3,5], "test"]', [1, 3, 5], 'test')
# Positional and keyword args
assertExpectedParse('binary[0, b=1]', 0, 1)
assertExpectedParse('binary["test", b=A]', 'test',
ct.DataShape(ct.TypeVar('A')))
assertExpectedParse('binary[[3, 6], b=int8]', [3, 6],
ct.DataShape(ct.int8))
assertExpectedParse('binary[Arg, b=["x", "test"]]',
ct.DataShape(ct.TypeVar('Arg')), ['x', 'test'])
# Keyword args
assertExpectedParse('binary[a=1, b=0]', 1, 0)
assertExpectedParse('binary[a=[int8, A, uint16], b="x"]', [
ct.DataShape(ct.int8),
ct.DataShape(ct.TypeVar('A')),
ct.DataShape(ct.uint16)
], 'x')
def test_unary_dtype_constr(self):
# Create a symbol table with no types in it, so we can
# make some isolated type constructors for testing
sym = datashape.TypeSymbolTable(bare=True)
# A limited set of dtypes for testing
sym.dtype['int8'] = ct.int8
sym.dtype['uint16'] = ct.uint16
sym.dtype['float64'] = ct.float64
# TypeVar type constructor
sym.dtype_constr['typevar'] = ct.TypeVar
# Unary dtype constructor that asserts on the argument value
expected_blah = [None]
def _unary_type_constr(blah):
self.assertEqual(blah, expected_blah[0])
expected_blah[0] = None
return ct.float32
sym.dtype_constr['unary'] = _unary_type_constr
def assertExpectedParse(ds_str, expected):
# Set the expected value, and call the parser
expected_blah[0] = expected
self.assertEqual(parse(ds_str, sym), ct.DataShape(ct.float32))
# Make sure the expected value was actually run by
# check that it reset the expected value to None
self.assertEqual(expected_blah[0], None,
'The test unary type constructor did not run')
# Integer parameter (positional)
assertExpectedParse('unary[0]', 0)
assertExpectedParse('unary[100000]', 100000)
# String parameter (positional)
assertExpectedParse('unary["test"]', 'test')
assertExpectedParse("unary['test']", 'test')
assertExpectedParse('unary["\\uc548\\ub155"]', u'\uc548\ub155')
assertExpectedParse(u'unary["\uc548\ub155"]', u'\uc548\ub155')
# DataShape parameter (positional)
assertExpectedParse('unary[int8]', ct.DataShape(ct.int8))
assertExpectedParse('unary[X]', ct.DataShape(ct.TypeVar('X')))
# Empty list parameter (positional)
assertExpectedParse('unary[[]]', [])
# List of integers parameter (positional)
assertExpectedParse('unary[[0, 3, 12]]', [0, 3, 12])
# List of strings parameter (positional)
assertExpectedParse('unary[["test", "one", "two"]]',
["test", "one", "two"])
# List of datashapes parameter (positional)
assertExpectedParse('unary[[float64, int8, uint16]]', [
ct.DataShape(ct.float64),
ct.DataShape(ct.int8),
ct.DataShape(ct.uint16)
])
# Integer parameter (keyword)
assertExpectedParse('unary[blah=0]', 0)
assertExpectedParse('unary[blah=100000]', 100000)
# String parameter (keyword)
assertExpectedParse('unary[blah="test"]', 'test')
assertExpectedParse("unary[blah='test']", 'test')
assertExpectedParse('unary[blah="\\uc548\\ub155"]', u'\uc548\ub155')
assertExpectedParse(u'unary[blah="\uc548\ub155"]', u'\uc548\ub155')
# DataShape parameter (keyword)
assertExpectedParse('unary[blah=int8]', ct.DataShape(ct.int8))
assertExpectedParse('unary[blah=X]', ct.DataShape(ct.TypeVar('X')))
# Empty list parameter (keyword)
assertExpectedParse('unary[blah=[]]', [])
# List of integers parameter (keyword)
assertExpectedParse('unary[blah=[0, 3, 12]]', [0, 3, 12])
# List of strings parameter (keyword)
assertExpectedParse('unary[blah=["test", "one", "two"]]',
["test", "one", "two"])
# List of datashapes parameter (keyword)
assertExpectedParse('unary[blah=[float64, int8, uint16]]', [
ct.DataShape(ct.float64),
ct.DataShape(ct.int8),
ct.DataShape(ct.uint16)
])
def setUp(self):
# Create a default symbol table for the parser to use
self.sym = datashape.TypeSymbolTable()
def sym():
return datashape.TypeSymbolTable()
