Coverage for python/lsst/daf/butler/tests/cliCmdTestBase.py : 35%

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1# This file is part of daf_butler.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (http://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <http://www.gnu.org/licenses/>.
22import abc
23import copy
24import os
25from unittest.mock import call
27from ..cli.utils import clickResultMsg, mockEnvVar, LogCliRunner, Mocker
28from ..cli import butler
31class CliCmdTestBase(abc.ABC):
32 """A test case base that is used to verify click command functions import
33 and call their respective script fucntions correctly.
34 """
36 @staticmethod
37 @abc.abstractmethod
38 def defaultExpected():
39 pass
41 @staticmethod
42 @abc.abstractmethod
43 def command():
44 """Get the click.Command being tested."""
45 pass
47 @property
48 def cli(self):
49 """Get the command line interface function under test, can be
50 overridden to test CLIs other than butler."""
51 return butler.cli
53 def setUp(self):
54 self.runner = LogCliRunner(env=mockEnvVar)
56 @classmethod
57 def makeExpected(cls, **kwargs):
58 expected = copy.copy(cls.defaultExpected())
59 expected.update(kwargs)
60 return expected
62 def run_command(self, inputs):
63 """Use the LogCliRunner with the mock environment variable set to
64 execute a butler subcommand and parameters specified in inputs.
66 Parameters
67 ----------
68 inputs : [`str`]
69 A list of strings that begins with the subcommand name and is
70 followed by arguments, option keys and option values.
72 Returns
73 -------
74 result : `click.testing.Result`
75 The Result object contains the results from calling
76 self.runner.invoke.
77 """
78 return self.runner.invoke(self.cli, inputs)
80 def run_test(self, inputs, expectedKwargs, withTempFile=None):
81 """Run the subcommand specified in inputs and verify a successful
82 outcome where exit code = 0 and the mock object has been called with
83 the expected arguments.
85 Returns the result object for inspection, e.g. sometimes it's useful to
86 be able to inpsect or print `result.output`.
88 Parameters
89 ----------
90 inputs : [`str`]
91 A list of strings that begins with the subcommand name and is
92 followed by arguments, option keys and option values.
93 expectedKwargs : `dict` [`str`, `str`]
94 The arguments that the subcommand function is expected to have been
95 called with. Keys are the argument name and values are the argument
96 value.
97 withTempFile : `str`, optional
98 If not None, will run in a temporary directory and create a file
99 with the given name, can be used with commands with parameters that
100 require a file to exist.
102 Returns
103 -------
104 result : `click.testing.Result`
105 The result object produced by invocation of the command under test.
106 """
107 with self.runner.isolated_filesystem():
108 if withTempFile is not None:
109 directory, filename = os.path.split(withTempFile)
110 if directory:
111 os.makedirs(os.path.dirname(withTempFile), exist_ok=True)
112 with open(withTempFile, "w") as _:
113 # just need to make the file, don't need to keep it open.
114 pass
115 result = self.run_command(inputs)
116 self.assertEqual(result.exit_code, 0, clickResultMsg(result))
117 if isinstance(expectedKwargs, (list, tuple)):
118 calls = (call(**e) for e in expectedKwargs)
119 else:
120 calls = (call(**expectedKwargs),)
121 Mocker.mock.assert_has_calls(list(calls))
122 return result
124 def run_missing(self, inputs, expectedMsg):
125 """Run the subcommand specified in inputs and verify a failed outcome
126 where exit code != 0 and an expected message has been written to
127 stdout.
129 Parameters
130 ----------
131 inputs : [`str`]
132 A list of strings that begins with the subcommand name and is
133 followed by arguments, option keys and option values.
134 expectedMsg : `str`
135 An error message that should be present in stdout after running the
136 subcommand. Can be a regular expression string.
137 """
138 result = self.run_command(inputs)
139 self.assertNotEqual(result.exit_code, 0, clickResultMsg(result))
140 self.assertRegex(result.stdout, expectedMsg)
142 def test_help(self):
143 self.assertFalse(self.command().get_short_help_str().endswith("..."),
144 msg="The command help message is being truncated to "
145 f"\"{self.command().get_short_help_str()}\". It should be shortened, or define "
146 "@command(short_help=\"something short and helpful\")")