BeEquivalentTo throws a NullReferenceException #1932
Description
Description
while running tests in parallel ( 2 threads) and when using BeEquivalentTo() to compare objects from two lists a null reference exception is thrown.
However no NRE is thrown on using single thread
System.NullReferenceException : Object reference not set to an instance of an object.
at FluentAssertions.Equivalency.SelfReferenceEquivalencyAssertionOptions`1.ToString()
public class Option
{
public string Id { get; set; }
public string Name { get; set; }
}
List<Option> expectedOptions;
List<Option> actualOptions;Complete minimal example reproducing the issue
// Arrange
List<Option> expectedOptions = new List<Option>
{
new Option()
{
Id = "4b71bcd9",
Name = "AutoTest_123"
}
};
// Act
List<Option> actualOptions = new List<Option>
{
new Option()
{
Id = "4b71bcd9",
Name = "AutoTest_123"
}
};
// Assert
for (var i = 0; i < expectedOptions.Count; i++)
{
expectedOptions [i].Should().BeEquivalentTo(actualOptions[i]);
}Expected behavior:
The assertion should be true.
Actual behavior:
System.NullReferenceException : Object reference not set to an instance of an object.
at FluentAssertions.Equivalency.SelfReferenceEquivalencyAssertionOptions`1.ToString()
Versions
FluentAssertions Version="6.7.0"