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False positive branch coverage #218
Description
Class under test
namespace CoverageTest;
public static class Class1
{
public static int Test1(int n)
{
if (n < 10)
n = Random.Shared.Next();
return n;
}
}Test class
using Xunit;
namespace CoverageTest.Tests;
public static class Class1Tests
{
[Fact]
public static void Test1()
{
Class1.Test1(2);
}
}Command executed
dotnet test -verbosity:diagnostic -c Debug --collect:"Code Coverage;IncludeTestAssembly=False;Format=cobertura;CoverageFileName=R:\coverage\CoverageTest.Tests\cobertura.xml"
Excerpt from coverage results
<method line-rate="1" branch-rate="1" complexity="2" name="Test1" signature="(int)">
<lines>
<line number="6" hits="1" branch="False" />
<line number="7" hits="1" branch="True" condition-coverage="100% (2/2)">
<conditions>
<condition number="0" type="jump" coverage="100%" />
</conditions>
</line>
<line number="8" hits="1" branch="False" />
<line number="9" hits="1" branch="False" />
<line number="10" hits="1" branch="False" />
</lines>
</method>The branch is executed only once, so it should not be possible to have coverage of both sides of the branch (taken and not-taken).
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