Keep hypothesis from freaking out about variable timings during metacov

1 files changed, 13 insertions, 1 deletions

diff --git a/tests/test_numbits.py b/tests/test_numbits.py
index ff574d40..4a835c4f 100644
--- a/tests/test_numbits.py
+++ b/tests/test_numbits.py
@@ -3,9 +3,10 @@
 
 """Tests for coverage.numbits"""
 
-from hypothesis import given
+from hypothesis import given, settings
 from hypothesis.strategies import sets, integers
 
+from coverage import env
 from coverage.numbits import (
     nums_to_numbits, numbits_to_nums, merge_numbits, numbits_any_intersection,
     )
@@ -15,22 +16,33 @@ from tests.coveragetest import CoverageTest
 # Hypothesis-generated line number data
 line_numbers = sets(integers(min_value=1, max_value=9999), min_size=1)
 
+# When coverage-testing ourselves, hypothesis complains about a test being
+# flaky because the first run exceeds the deadline (and fails), and the second
+# run succeeds.  Disable the deadline if we are coverage-testing.
+default_settings = settings()
+if env.METACOV:
+    default_settings = settings(default_settings, deadline=None)
+
+
 class NumbitsOpTest(CoverageTest):
     """Tests of the numbits operations in numbits.py."""
 
     run_in_temp_dir = False
 
     @given(line_numbers)
+    @settings(default_settings)
     def test_conversion(self, nums):
         nums2 = numbits_to_nums(nums_to_numbits(nums))
         self.assertEqual(nums, set(nums2))
 
     @given(line_numbers, line_numbers)
+    @settings(default_settings)
     def test_merging(self, nums1, nums2):
         merged = numbits_to_nums(merge_numbits(nums_to_numbits(nums1), nums_to_numbits(nums2)))
         self.assertEqual(nums1 | nums2, set(merged))
 
     @given(line_numbers, line_numbers)
+    @settings(default_settings)
     def test_any_intersection(self, nums1, nums2):
         inter = numbits_any_intersection(nums_to_numbits(nums1), nums_to_numbits(nums2))
         expect = bool(nums1 & nums2)