Random coverage

Coverage reports for some PRs report decrease in overall coverage, sometimes even when PR does not touch code at all. The following list links to the parts of code that are only sometimes tested. The problem can be fixed by writing a test that always test the linked code.

Widgets

• https://codecov.io/gh/biolab/orange3/compare/ca9292e02ff80eb4c14c124f7e4bf270fb2795da...1caa8135965b9b4e69728d38cee03e8624746e1f/src/Orange/widgets/visualize/owmap.py
• https://codecov.io/gh/biolab/orange3/compare/1a4652ab07fb1d4e4246f87c7f716d4783abea92...959a79e14344856da534d7dc1bc0b4f1f92aaaa4/src/Orange/widgets/visualize/owmap.py
• https://codecov.io/gh/biolab/orange3/compare/ca9292e02ff80eb4c14c124f7e4bf270fb2795da...1caa8135965b9b4e69728d38cee03e8624746e1f/src/Orange/widgets/utils/webview.py
• https://codecov.io/gh/biolab/orange3/compare/1a4652ab07fb1d4e4246f87c7f716d4783abea92...1278e52be21ab21173f6d5e3d8199f2e05c6c660/src/Orange/widgets/evaluate/owconfusionmatrix.py
• https://codecov.io/gh/biolab/orange3/compare/1a4652ab07fb1d4e4246f87c7f716d4783abea92...959a79e14344856da534d7dc1bc0b4f1f92aaaa4/src/Orange/widgets/gui.py
• https://codecov.io/gh/biolab/orange3/compare/abe0866504b754a19e32b67e84d062e8bc4f72dc...700dd686ff647296bc3f47d3ddcf913cd0fe25f9/src/Orange/widgets/visualize/owmosaic.py

Random test fails

====================================================================== ERROR: test_pause_continue (Orange.widgets.visualize.tests.test_owmosaic.MosaicVizRankTests)

Traceback (most recent call last): File "C:\projects\orange3-75xll\build.test\lib\site-packages\Orange\widgets\visualize\tests\test_owmosaic.py", line 256, in test_pause_continue self.process_events(until=lambda: self.vizrank.saved_progress > 20) File "C:\projects\orange3-75xll\build.test\lib\site-packages\Orange\widgets\tests\base.py", line 194, in process_events raise TimeoutError() TimeoutError

====================================================================== ERROR: test_subset_data (Orange.widgets.visualize.tests.test_owmosaic.MosaicVizRankTests)

Traceback (most recent call last): File "/home/travis/build/biolab/orange3/build/travis-test/Orange/widgets/visualize/tests/test_owmosaic.py", line 348, in test_subset_data self.send_signal(self.widget.Inputs.data_subset, table_titanic[::20]) File "/home/travis/build/biolab/orange3/build/travis-test/Orange/widgets/tests/base.py", line 235, in send_signal widget.handleNewSignals() File "/home/travis/build/biolab/orange3/build/travis-test/Orange/widgets/visualize/owmosaic.py", line 462, in handleNewSignals self.reset_graph() File "/home/travis/build/biolab/orange3/build/travis-test/Orange/widgets/visualize/owmosaic.py", line 475, in reset_graph self.update_graph() File "/home/travis/build/biolab/orange3/build/travis-test/Orange/widgets/visualize/owmosaic.py", line 983, in update_graph get_conditional_distribution(self.discrete_data[self.subset_indices], attr_list) File "/home/travis/build/biolab/orange3/build/travis-test/Orange/data/table.py", line 707, in getitem return self.from_table_rows(self, key) File "/home/travis/build/biolab/orange3/build/travis-test/Orange/data/table.py", line 457, in from_table_rows self.metas = source.metas[row_indices] IndexError: boolean index did not match indexed array along dimension 0; dimension is 2201 but corresponding boolean dimension is 230946832