mirror of https://github.com/nucypher/nucypher.git
78 lines
2.0 KiB
Python
78 lines
2.0 KiB
Python
"""
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This file is part of nucypher.
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nucypher is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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nucypher is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with nucypher. If not, see <https://www.gnu.org/licenses/>.
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"""
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import io
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class MockStdinWrapper:
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def __init__(self):
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self.mock_stdin = MockStdin()
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self.mock_getpass = MockGetpass()
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def line(self, s):
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self.mock_stdin.line(s)
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def password(self, s, confirm=False):
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self.mock_getpass.line(s)
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if confirm:
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self.mock_getpass.line(s)
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def empty(self):
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return self.mock_stdin.empty() and self.mock_getpass.empty()
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class MockStdinBase:
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def __init__(self):
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self.stream = io.StringIO()
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self.lines = 0
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def line(self, s):
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pos = self.stream.tell() # preserve the current read pointer
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self.stream.seek(0, io.SEEK_END)
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self.stream.write(s + '\n')
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self.stream.seek(pos)
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self.lines += 1
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def _readline(self):
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assert self.lines > 0, "Stdin was queried, but the list of mock inputs is empty"
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self.lines -= 1
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return self.stream.readline()
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def empty(self):
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return self.lines == 0
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class MockGetpass(MockStdinBase):
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"""
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Mocks `getpass.getpass()`
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"""
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def __call__(self, prompt):
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print(prompt, end='')
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s = self._readline()
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return s[:-1] # remove the final line break
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class MockStdin(MockStdinBase):
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"""
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Mocks `sys.stdin`
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"""
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def readline(self):
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return self._readline()
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