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[FIX] ZeroDivisionError owmosaic.py #2046

Merged
merged 1 commit into from
Feb 27, 2017
Merged

[FIX] ZeroDivisionError owmosaic.py #2046

merged 1 commit into from
Feb 27, 2017

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jerneju
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@jerneju jerneju commented Feb 22, 2017

Issue

ZeroDivisionError is thrown when invalid data is loaded into widget. For instance: [[0, NaN], [NaN, NaN]].
https://sentry.io/biolab/orange3/issues/204400244/

Description of changes

If the value "total" is zero aborts drawing the plot.

Includes
  • Code changes
  • Tests
  • Documentation

@jerneju
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jerneju commented Feb 22, 2017

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codecov-io commented Feb 22, 2017

Codecov Report

Merging #2046 into master will decrease coverage by -0.04%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##           master    #2046      +/-   ##
==========================================
- Coverage   70.69%   70.66%   -0.04%     
==========================================
  Files         315      315              
  Lines       53900    53834      -66     
==========================================
- Hits        38106    38040      -66     
  Misses      15794    15794

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def test_zerodivision_error(self):
"""
ZeroDivisionError should not be thrown when
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Could you make this description more explicit. Instead of "some kind of invalid data" try to describe what the problem in data was.

try:
self.send_signal("Data", table)
except ZeroDivisionError:
self.assertTrue(False)
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self.fail can be used to make the test fail. And it is also a good idea to specify the reason of the failure ("Widget crashed with ZeroDivisionError" or something like this)

@@ -512,6 +512,18 @@ def update_graph(self):
spacing = self.SPACING
bar_width = self.BAR_WIDTH

def get_counts(attr_vals, values):
if attr_vals == "":
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Nice. Could you also add a docstring to this function describing what it does and how it handles zero counts?

@@ -512,6 +512,18 @@ def update_graph(self):
spacing = self.SPACING
bar_width = self.BAR_WIDTH

def get_counts(attr_vals, values):
if attr_vals == "":
counts = [conditionaldict[val] for val in values]
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While draw_data used conditionaldict[val], draw_text used conditionaldict.get(val, 1). Could you elaborate on why indexing is sufficient?

try:
self.send_signal("Data", table)
except ZeroDivisionError:
self.fail("Widget crashed due to ZeroDivisionError.")
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Using data with only NaNs should not result in any kind of error, not just ZeroDivision.
Why not make this test more general: rename from test_zerodivision_error to e.g. test_nan_column, remove the try, all exceptions will be shown when/if they happen.

ZeroDivisionError should not be thrown when a column with only NaN-s is loaded into widget.
https://sentry.io/biolab/orange3/issues/204400244/

Corrects the total value and rectangles' widths.
@lanzagar lanzagar merged commit 7ad7488 into biolab:master Feb 27, 2017
@jerneju jerneju deleted the zerodivisionerror-mosaic branch April 20, 2017 13:47
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4 participants