tmp
/
pip-install-ghxuqwgs
/numpy_78e94bf2b6094bf9a1f3d92042f9bf46
/numpy
/lib
/tests
/test__iotools.py
| from __future__ import division, absolute_import, print_function | |
| import sys | |
| import time | |
| from datetime import date | |
| import numpy as np | |
| from numpy.compat import asbytes, asbytes_nested | |
| from numpy.testing import ( | |
| run_module_suite, TestCase, assert_, assert_equal | |
| ) | |
| from numpy.lib._iotools import ( | |
| LineSplitter, NameValidator, StringConverter, | |
| has_nested_fields, easy_dtype, flatten_dtype | |
| ) | |
| class TestLineSplitter(TestCase): | |
| "Tests the LineSplitter class." | |
| def test_no_delimiter(self): | |
| "Test LineSplitter w/o delimiter" | |
| strg = asbytes(" 1 2 3 4 5 # test") | |
| test = LineSplitter()(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '5'])) | |
| test = LineSplitter('')(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '5'])) | |
| def test_space_delimiter(self): | |
| "Test space delimiter" | |
| strg = asbytes(" 1 2 3 4 5 # test") | |
| test = LineSplitter(asbytes(' '))(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '', '5'])) | |
| test = LineSplitter(asbytes(' '))(strg) | |
| assert_equal(test, asbytes_nested(['1 2 3 4', '5'])) | |
| def test_tab_delimiter(self): | |
| "Test tab delimiter" | |
| strg = asbytes(" 1\t 2\t 3\t 4\t 5 6") | |
| test = LineSplitter(asbytes('\t'))(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '5 6'])) | |
| strg = asbytes(" 1 2\t 3 4\t 5 6") | |
| test = LineSplitter(asbytes('\t'))(strg) | |
| assert_equal(test, asbytes_nested(['1 2', '3 4', '5 6'])) | |
| def test_other_delimiter(self): | |
| "Test LineSplitter on delimiter" | |
| strg = asbytes("1,2,3,4,,5") | |
| test = LineSplitter(asbytes(','))(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '', '5'])) | |
| # | |
| strg = asbytes(" 1,2,3,4,,5 # test") | |
| test = LineSplitter(asbytes(','))(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '', '5'])) | |
| def test_constant_fixed_width(self): | |
| "Test LineSplitter w/ fixed-width fields" | |
| strg = asbytes(" 1 2 3 4 5 # test") | |
| test = LineSplitter(3)(strg) | |
| assert_equal(test, asbytes_nested(['1', '2', '3', '4', '', '5', ''])) | |
| # | |
| strg = asbytes(" 1 3 4 5 6# test") | |
| test = LineSplitter(20)(strg) | |
| assert_equal(test, asbytes_nested(['1 3 4 5 6'])) | |
| # | |
| strg = asbytes(" 1 3 4 5 6# test") | |
| test = LineSplitter(30)(strg) | |
| assert_equal(test, asbytes_nested(['1 3 4 5 6'])) | |
| def test_variable_fixed_width(self): | |
| strg = asbytes(" 1 3 4 5 6# test") | |
| test = LineSplitter((3, 6, 6, 3))(strg) | |
| assert_equal(test, asbytes_nested(['1', '3', '4 5', '6'])) | |
| # | |
| strg = asbytes(" 1 3 4 5 6# test") | |
| test = LineSplitter((6, 6, 9))(strg) | |
| assert_equal(test, asbytes_nested(['1', '3 4', '5 6'])) | |
| #------------------------------------------------------------------------------- | |
| class TestNameValidator(TestCase): | |
| def test_case_sensitivity(self): | |
| "Test case sensitivity" | |
| names = ['A', 'a', 'b', 'c'] | |
| test = NameValidator().validate(names) | |
| assert_equal(test, ['A', 'a', 'b', 'c']) | |
| test = NameValidator(case_sensitive=False).validate(names) | |
| assert_equal(test, ['A', 'A_1', 'B', 'C']) | |
| test = NameValidator(case_sensitive='upper').validate(names) | |
| assert_equal(test, ['A', 'A_1', 'B', 'C']) | |
| test = NameValidator(case_sensitive='lower').validate(names) | |
| assert_equal(test, ['a', 'a_1', 'b', 'c']) | |
| def test_excludelist(self): | |
| "Test excludelist" | |
| names = ['dates', 'data', 'Other Data', 'mask'] | |
| validator = NameValidator(excludelist=['dates', 'data', 'mask']) | |
| test = validator.validate(names) | |
| assert_equal(test, ['dates_', 'data_', 'Other_Data', 'mask_']) | |
| def test_missing_names(self): | |
| "Test validate missing names" | |
| namelist = ('a', 'b', 'c') | |
| validator = NameValidator() | |
| assert_equal(validator(namelist), ['a', 'b', 'c']) | |
| namelist = ('', 'b', 'c') | |
| assert_equal(validator(namelist), ['f0', 'b', 'c']) | |
| namelist = ('a', 'b', '') | |
| assert_equal(validator(namelist), ['a', 'b', 'f0']) | |
| namelist = ('', 'f0', '') | |
| assert_equal(validator(namelist), ['f1', 'f0', 'f2']) | |
| def test_validate_nb_names(self): | |
| "Test validate nb names" | |
| namelist = ('a', 'b', 'c') | |
| validator = NameValidator() | |
| assert_equal(validator(namelist, nbfields=1), ('a',)) | |
| assert_equal(validator(namelist, nbfields=5, defaultfmt="g%i"), | |
| ['a', 'b', 'c', 'g0', 'g1']) | |
| def test_validate_wo_names(self): | |
| "Test validate no names" | |
| namelist = None | |
| validator = NameValidator() | |
| assert_(validator(namelist) is None) | |
| assert_equal(validator(namelist, nbfields=3), ['f0', 'f1', 'f2']) | |
| #------------------------------------------------------------------------------- | |
| def _bytes_to_date(s): | |
| if sys.version_info[0] >= 3: | |
| return date(*time.strptime(s.decode('latin1'), "%Y-%m-%d")[:3]) | |
| else: | |
| return date(*time.strptime(s, "%Y-%m-%d")[:3]) | |
| class TestStringConverter(TestCase): | |
| "Test StringConverter" | |
| def test_creation(self): | |
| "Test creation of a StringConverter" | |
| converter = StringConverter(int, -99999) | |
| assert_equal(converter._status, 1) | |
| assert_equal(converter.default, -99999) | |
| def test_upgrade(self): | |
| "Tests the upgrade method." | |
| converter = StringConverter() | |
| assert_equal(converter._status, 0) | |
| converter.upgrade(asbytes('0')) | |
| assert_equal(converter._status, 1) | |
| converter.upgrade(asbytes('0.')) | |
| assert_equal(converter._status, 2) | |
| converter.upgrade(asbytes('0j')) | |
| assert_equal(converter._status, 3) | |
| converter.upgrade(asbytes('a')) | |
| assert_equal(converter._status, len(converter._mapper) - 1) | |
| def test_missing(self): | |
| "Tests the use of missing values." | |
| converter = StringConverter(missing_values=(asbytes('missing'), | |
| asbytes('missed'))) | |
| converter.upgrade(asbytes('0')) | |
| assert_equal(converter(asbytes('0')), 0) | |
| assert_equal(converter(asbytes('')), converter.default) | |
| assert_equal(converter(asbytes('missing')), converter.default) | |
| assert_equal(converter(asbytes('missed')), converter.default) | |
| try: | |
| converter('miss') | |
| except ValueError: | |
| pass | |
| def test_upgrademapper(self): | |
| "Tests updatemapper" | |
| dateparser = _bytes_to_date | |
| StringConverter.upgrade_mapper(dateparser, date(2000, 1, 1)) | |
| convert = StringConverter(dateparser, date(2000, 1, 1)) | |
| test = convert(asbytes('2001-01-01')) | |
| assert_equal(test, date(2001, 1, 1)) | |
| test = convert(asbytes('2009-01-01')) | |
| assert_equal(test, date(2009, 1, 1)) | |
| test = convert(asbytes('')) | |
| assert_equal(test, date(2000, 1, 1)) | |
| def test_string_to_object(self): | |
| "Make sure that string-to-object functions are properly recognized" | |
| conv = StringConverter(_bytes_to_date) | |
| assert_equal(conv._mapper[-2][0](0), 0j) | |
| assert_(hasattr(conv, 'default')) | |
| def test_keep_default(self): | |
| "Make sure we don't lose an explicit default" | |
| converter = StringConverter(None, missing_values=asbytes(''), | |
| default=-999) | |
| converter.upgrade(asbytes('3.14159265')) | |
| assert_equal(converter.default, -999) | |
| assert_equal(converter.type, np.dtype(float)) | |
| # | |
| converter = StringConverter( | |
| None, missing_values=asbytes(''), default=0) | |
| converter.upgrade(asbytes('3.14159265')) | |
| assert_equal(converter.default, 0) | |
| assert_equal(converter.type, np.dtype(float)) | |
| def test_keep_default_zero(self): | |
| "Check that we don't lose a default of 0" | |
| converter = StringConverter(int, default=0, | |
| missing_values=asbytes("N/A")) | |
| assert_equal(converter.default, 0) | |
| def test_keep_missing_values(self): | |
| "Check that we're not losing missing values" | |
| converter = StringConverter(int, default=0, | |
| missing_values=asbytes("N/A")) | |
| assert_equal( | |
| converter.missing_values, set(asbytes_nested(['', 'N/A']))) | |
| def test_int64_dtype(self): | |
| "Check that int64 integer types can be specified" | |
| converter = StringConverter(np.int64, default=0) | |
| val = asbytes("-9223372036854775807") | |
| assert_(converter(val) == -9223372036854775807) | |
| val = asbytes("9223372036854775807") | |
| assert_(converter(val) == 9223372036854775807) | |
| def test_uint64_dtype(self): | |
| "Check that uint64 integer types can be specified" | |
| converter = StringConverter(np.uint64, default=0) | |
| val = asbytes("9223372043271415339") | |
| assert_(converter(val) == 9223372043271415339) | |
| class TestMiscFunctions(TestCase): | |
| def test_has_nested_dtype(self): | |
| "Test has_nested_dtype" | |
| ndtype = np.dtype(np.float) | |
| assert_equal(has_nested_fields(ndtype), False) | |
| ndtype = np.dtype([('A', '|S3'), ('B', float)]) | |
| assert_equal(has_nested_fields(ndtype), False) | |
| ndtype = np.dtype([('A', int), ('B', [('BA', float), ('BB', '|S1')])]) | |
| assert_equal(has_nested_fields(ndtype), True) | |
| def test_easy_dtype(self): | |
| "Test ndtype on dtypes" | |
| # Simple case | |
| ndtype = float | |
| assert_equal(easy_dtype(ndtype), np.dtype(float)) | |
| # As string w/o names | |
| ndtype = "i4, f8" | |
| assert_equal(easy_dtype(ndtype), | |
| np.dtype([('f0', "i4"), ('f1', "f8")])) | |
| # As string w/o names but different default format | |
| assert_equal(easy_dtype(ndtype, defaultfmt="field_%03i"), | |
| np.dtype([('field_000', "i4"), ('field_001', "f8")])) | |
| # As string w/ names | |
| ndtype = "i4, f8" | |
| assert_equal(easy_dtype(ndtype, names="a, b"), | |
| np.dtype([('a', "i4"), ('b', "f8")])) | |
| # As string w/ names (too many) | |
| ndtype = "i4, f8" | |
| assert_equal(easy_dtype(ndtype, names="a, b, c"), | |
| np.dtype([('a', "i4"), ('b', "f8")])) | |
| # As string w/ names (not enough) | |
| ndtype = "i4, f8" | |
| assert_equal(easy_dtype(ndtype, names=", b"), | |
| np.dtype([('f0', "i4"), ('b', "f8")])) | |
| # ... (with different default format) | |
| assert_equal(easy_dtype(ndtype, names="a", defaultfmt="f%02i"), | |
| np.dtype([('a', "i4"), ('f00', "f8")])) | |
| # As list of tuples w/o names | |
| ndtype = [('A', int), ('B', float)] | |
| assert_equal(easy_dtype(ndtype), np.dtype([('A', int), ('B', float)])) | |
| # As list of tuples w/ names | |
| assert_equal(easy_dtype(ndtype, names="a,b"), | |
| np.dtype([('a', int), ('b', float)])) | |
| # As list of tuples w/ not enough names | |
| assert_equal(easy_dtype(ndtype, names="a"), | |
| np.dtype([('a', int), ('f0', float)])) | |
| # As list of tuples w/ too many names | |
| assert_equal(easy_dtype(ndtype, names="a,b,c"), | |
| np.dtype([('a', int), ('b', float)])) | |
| # As list of types w/o names | |
| ndtype = (int, float, float) | |
| assert_equal(easy_dtype(ndtype), | |
| np.dtype([('f0', int), ('f1', float), ('f2', float)])) | |
| # As list of types w names | |
| ndtype = (int, float, float) | |
| assert_equal(easy_dtype(ndtype, names="a, b, c"), | |
| np.dtype([('a', int), ('b', float), ('c', float)])) | |
| # As simple dtype w/ names | |
| ndtype = np.dtype(float) | |
| assert_equal(easy_dtype(ndtype, names="a, b, c"), | |
| np.dtype([(_, float) for _ in ('a', 'b', 'c')])) | |
| # As simple dtype w/o names (but multiple fields) | |
| ndtype = np.dtype(float) | |
| assert_equal( | |
| easy_dtype(ndtype, names=['', '', ''], defaultfmt="f%02i"), | |
| np.dtype([(_, float) for _ in ('f00', 'f01', 'f02')])) | |
| def test_flatten_dtype(self): | |
| "Testing flatten_dtype" | |
| # Standard dtype | |
| dt = np.dtype([("a", "f8"), ("b", "f8")]) | |
| dt_flat = flatten_dtype(dt) | |
| assert_equal(dt_flat, [float, float]) | |
| # Recursive dtype | |
| dt = np.dtype([("a", [("aa", '|S1'), ("ab", '|S2')]), ("b", int)]) | |
| dt_flat = flatten_dtype(dt) | |
| assert_equal(dt_flat, [np.dtype('|S1'), np.dtype('|S2'), int]) | |
| # dtype with shaped fields | |
| dt = np.dtype([("a", (float, 2)), ("b", (int, 3))]) | |
| dt_flat = flatten_dtype(dt) | |
| assert_equal(dt_flat, [float, int]) | |
| dt_flat = flatten_dtype(dt, True) | |
| assert_equal(dt_flat, [float] * 2 + [int] * 3) | |
| # dtype w/ titles | |
| dt = np.dtype([(("a", "A"), "f8"), (("b", "B"), "f8")]) | |
| dt_flat = flatten_dtype(dt) | |
| assert_equal(dt_flat, [float, float]) | |
| if __name__ == "__main__": | |
| run_module_suite() | |