internal void FromStringArray(StringArrayConverters sut, ImmutableArray <string> expected)
        {
            // act
            var actual = sut.Convert(expected, CultureInfo.InvariantCulture);

            // assert
            Assert.Equal((IEnumerable <string>)expected, actual);
        }
        internal void FromString(StringArrayConverters sut, string expected)
        {
            // arrange
            // act
            var actual = sut.Convert(expected, CultureInfo.InvariantCulture);

            // assert
            Assert.Equal((IEnumerable <string>)ImmutableArray.Create(expected), actual);
        }
        internal void FromBool(StringArrayConverters sut)
        {
            // arrange
            // act
            var actual = sut.Convert(true, CultureInfo.InvariantCulture);

            // assert
            Assert.Equal((IEnumerable <string>)ImmutableArray.Create("True"), actual);
        }