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import os
import pytest
import textwrap
import numpy as np
from . import util
class TestString(util.F2PyTest):
sources = [util.getpath("tests", "src", "string", "char.f90")]
@pytest.mark.slow
def test_char(self):
strings = np.array(["ab", "cd", "ef"], dtype="c").T
inp, out = self.module.char_test.change_strings(
strings, strings.shape[1])
assert inp == pytest.approx(strings)
expected = strings.copy()
expected[1, :] = "AAA"
assert out == pytest.approx(expected)
class TestDocStringArguments(util.F2PyTest):
sources = [util.getpath("tests", "src", "string", "string.f")]
def test_example(self):
a = np.array(b"123\0\0")
b = np.array(b"123\0\0")
c = np.array(b"123")
d = np.array(b"123")
self.module.foo(a, b, c, d)
assert a.tobytes() == b"123\0\0"
assert b.tobytes() == b"B23\0\0"
assert c.tobytes() == b"123"
assert d.tobytes() == b"D23"
class TestFixedString(util.F2PyTest):
sources = [util.getpath("tests", "src", "string", "fixed_string.f90")]
@staticmethod
def _sint(s, start=0, end=None):
"""Return the content of a string buffer as integer value.
For example:
_sint('1234') -> 4321
_sint('123A') -> 17321
"""
if isinstance(s, np.ndarray):
s = s.tobytes()
elif isinstance(s, str):
s = s.encode()
assert isinstance(s, bytes)
if end is None:
end = len(s)
i = 0
for j in range(start, min(end, len(s))):
i += s[j] * 10**j
return i
def _get_input(self, intent="in"):
if intent in ["in"]:
yield ""
yield "1"
yield "1234"
yield "12345"
yield b""
yield b"\0"
yield b"1"
yield b"\01"
yield b"1\0"
yield b"1234"
yield b"12345"
yield np.ndarray((), np.bytes_, buffer=b"") # array(b'', dtype='|S0')
yield np.array(b"") # array(b'', dtype='|S1')
yield np.array(b"\0")
yield np.array(b"1")
yield np.array(b"1\0")
yield np.array(b"\01")
yield np.array(b"1234")
yield np.array(b"123\0")
yield np.array(b"12345")
def test_intent_in(self):
for s in self._get_input():
r = self.module.test_in_bytes4(s)
# also checks that s is not changed inplace
expected = self._sint(s, end=4)
assert r == expected, s
def test_intent_inout(self):
for s in self._get_input(intent="inout"):
rest = self._sint(s, start=4)
r = self.module.test_inout_bytes4(s)
expected = self._sint(s, end=4)
assert r == expected
# check that the rest of input string is preserved
assert rest == self._sint(s, start=4)