def test_plot_graph(excel, tmpdir):
from unittest import mock
excel_compiler = ExcelCompiler(excel=excel)
with pytest.raises(ImportError,
match="Package 'matplotlib' is not installed"):
excel_compiler.plot_graph()
import sys
mock_imports = (
'matplotlib',
'matplotlib.pyplot',
'matplotlib.cbook',
'matplotlib.colors',
'matplotlib.collections',
'matplotlib.patches',
)
for mock_import in mock_imports:
sys.modules[mock_import] = mock.MagicMock()
out_address = 'trim-range!B2'
excel_compiler.evaluate(out_address)
with mock.patch('pycel.excelcompiler.nx'):
excel_compiler.plot_graph()
