public void Use_mismatch_description_when_not_null()
{
var matcher = new TestNonNullMatcher(s => false);
var description = new StringDescription();
matcher.DescribeMismatch("", description);
Assert.Equal("TestNonNullMatcher.DescribeMismatchSafely", description.ToString());
}
public void Use_base_mismatch_description_when_null()
{
var matcher = new TestNonNullMatcher(s => true);
var description = new StringDescription();
matcher.DescribeMismatch(null, description);
Assert.Equal("was null", description.ToString());
}