refactor(test): use math.isclose to check float values

4 files changed, 15 insertions, 10 deletions

diff --git a/tests/test_config.py b/tests/test_config.py
index 9a64d5b1..d85dfc7b 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -3,6 +3,7 @@
 
 """Test the config file handling for coverage.py"""
 
+import math
 from collections import OrderedDict
 
 from unittest import mock
@@ -87,7 +88,7 @@ class ConfigTest(CoverageTest):
         assert cov.config.plugins == ["plugins.a_plugin"]
         assert cov.config.precision == 3
         assert cov.config.html_title == "tabblo & «ταБЬℓσ»"
-        assert round(abs(cov.config.fail_under-90.5), 7) == 0
+        assert math.isclose(cov.config.fail_under, 90.5)
         assert cov.config.get_plugin_options("plugins.a_plugin") == {"hello": "world"}
 
         # Test that our class doesn't reject integers when loading floats
@@ -97,7 +98,7 @@ class ConfigTest(CoverageTest):
             fail_under = 90
             """)
         cov = coverage.Coverage(config_file="pyproject.toml")
-        assert round(abs(cov.config.fail_under-90), 7) == 0
+        assert math.isclose(cov.config.fail_under, 90)
         assert isinstance(cov.config.fail_under, float)
 
     def test_ignored_config_file(self):
diff --git a/tests/test_plugins.py b/tests/test_plugins.py
index 2140f00c..45b3bc9e 100644
--- a/tests/test_plugins.py
+++ b/tests/test_plugins.py
@@ -5,6 +5,7 @@
 
 import inspect
 import io
+import math
 import os.path
 from xml.etree import ElementTree
 
@@ -426,7 +427,7 @@ class GoodFileTracerTest(FileTracerTest):
             'TOTAL           11      7      0      0    36%',
             ]
         assert expected == report
-        assert round(abs(total-36.36), 2) == 0
+        assert math.isclose(total, 4 / 11 * 100)
 
     def test_plugin2_with_html_report(self):
         self.make_render_and_caller()
@@ -437,7 +438,7 @@ class GoodFileTracerTest(FileTracerTest):
         self.start_import_stop(cov, "caller")
 
         total = cov.html_report(include=["*.html"], omit=["uni*.html"])
-        assert round(abs(total-36.36), 2) == 0
+        assert math.isclose(total, 4 / 11 * 100)
 
         self.assert_exists("htmlcov/index.html")
         self.assert_exists("htmlcov/bar_4_html.html")
@@ -452,7 +453,7 @@ class GoodFileTracerTest(FileTracerTest):
         self.start_import_stop(cov, "caller")
 
         total = cov.xml_report(include=["*.html"], omit=["uni*.html"])
-        assert round(abs(total-36.36), 2) == 0
+        assert math.isclose(total, 4 / 11 * 100)
 
         dom = ElementTree.parse("coverage.xml")
         classes = {}
diff --git a/tests/test_results.py b/tests/test_results.py
index 8b2a737b..4138ffd4 100644
--- a/tests/test_results.py
+++ b/tests/test_results.py
@@ -3,6 +3,8 @@
 
 """Tests for coverage.py's results analysis."""
 
+import math
+
 import pytest
 
 from coverage.exceptions import ConfigError
@@ -31,7 +33,7 @@ class NumbersTest(CoverageTest):
         assert n3.n_statements == 210
         assert n3.n_executed == 182
         assert n3.n_missing == 28
-        assert round(abs(n3.pc_covered-86.666666666), 7) == 0
+        assert math.isclose(n3.pc_covered, 86.666666666)
 
     def test_sum(self):
         n1 = Numbers(n_files=1, n_statements=200, n_missing=20)
@@ -41,7 +43,7 @@ class NumbersTest(CoverageTest):
         assert n3.n_statements == 210
         assert n3.n_executed == 182
         assert n3.n_missing == 28
-        assert round(abs(n3.pc_covered-86.666666666), 7) == 0
+        assert math.isclose(n3.pc_covered, 86.666666666)
 
     @pytest.mark.parametrize("kwargs, res", [
         (dict(n_files=1, n_statements=1000, n_missing=0), "100"),
diff --git a/tests/test_summary.py b/tests/test_summary.py
index dcf244a1..7e8f2919 100644
--- a/tests/test_summary.py
+++ b/tests/test_summary.py
@@ -5,6 +5,7 @@
 
 import glob
 import io
+import math
 import os
 import os.path
 import py_compile
@@ -778,17 +779,17 @@ class ReportingReturnValueTest(CoverageTest):
     def test_report(self):
         cov = self.run_coverage()
         val = cov.report(include="*/doit.py")
-        assert round(abs(val-85.7), 1) == 0
+        assert math.isclose(val, 6 / 7 * 100)
 
     def test_html(self):
         cov = self.run_coverage()
         val = cov.html_report(include="*/doit.py")
-        assert round(abs(val-85.7), 1) == 0
+        assert math.isclose(val, 6 / 7 * 100)
 
     def test_xml(self):
         cov = self.run_coverage()
         val = cov.xml_report(include="*/doit.py")
-        assert round(abs(val-85.7), 1) == 0
+        assert math.isclose(val, 6 / 7 * 100)
 
 
 class SummaryReporterConfigurationTest(CoverageTest):