def _locate_nuget_path(self, nuget_path):
"""
Locates NuGet executable path from user input or NuGet facade.
@:raises click.UsageError
"""
# If NuGet path is provided, check if it's valid
if nuget_path:
if not NuGetRunner.valid_nuget_executable(nuget_path):
raise click.UsageError(nuget_path + " is not a valid NuGet executable.")
else:
return nuget_path
# NuGet is not provided, locate
nuget_path = NuGetRunner.locate_nuget()
if nuget_path:
return nuget_path
# Failed to locate
if not self.quiet:
if sys.platform == 'win32':
click.secho('You can install NuGet from the official website: https://www.nuget.org/downloads')
click.secho('You might need to add NuGet installation folder to your PATH variable.')
elif sys.platform == 'darwin':
click.secho('You can install NuGet using Homebrew ("brew install nuget") or '
'download from the official website')
click.secho('You might need to add NuGet installation folder to your PATH variable.')
raise click.UsageError('Failed to locate NuGet executable.')
def test_nuget_runner_valid_nuget_executable(self, mock_call, mock_open,
mock_escape_exe_path):
"""Test NuGetRunner.valid_nuget_executable """
mock_call.return_value = 0
with open(os.devnull, "w") as devnull:
mock_open_handler = MagicMock()
mock_open.return_value = mock_open_handler
mock_open_handler.__enter__.return_value = devnull
mock_escape_exe_path.return_value = "nuget.exe"
assert NuGetRunner.valid_nuget_executable("nuget.exe")
mock_call.assert_called_with("nuget.exe help",
shell=True,
stderr=devnull,
stdout=devnull)