Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Theory method 'From_IEnumerable' on test class 'IReadOnlyListTestSuite' does not use parameter '__'. Use the parameter, or remove the parameter and associated data. (https://xunit.net/xunit.analyzers/rules/xUnit1026)

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

Do not use Assert.Equal() to check for collection size. Use Assert.Empty instead. (https://xunit.net/xunit.analyzers/rules/xUnit2013)

Do not use Assert.Equal() to check for collection size. Use Assert.Empty instead. (https://xunit.net/xunit.analyzers/rules/xUnit2013)

Do not use Assert.Equal() to check for collection size. Use Assert.Empty instead. (https://xunit.net/xunit.analyzers/rules/xUnit2013)