public void WriteString_should_write_expected_bytes_when_size_is_near_tempUtf8_length(
            [Values(-1, 0, 1)]
            int delta)
        {
            var stream = new MemoryStream();
            var subject = new BsonStreamAdapter(stream);
            var subjectReflector = new Reflector(subject);
            var size = subjectReflector._tempUtf8.Length + delta;
            var length = size - 1;
            var value = new string('a', length);
            var expectedBytes = BitConverter.GetBytes(length + 1).Concat(Enumerable.Repeat<byte>(97, length)).Concat(new byte[] { 0 }).ToArray();

            subject.WriteString(value, Utf8Encodings.Strict);

            stream.ToArray().Should().Equal(expectedBytes);
        }
        public void WriteString_should_write_expected_bytes(string value, byte[] expectedBytes)
        {
            var stream = new MemoryStream();
            var subject = new BsonStreamAdapter(stream);

            subject.WriteString(value, Utf8Encodings.Strict);

            stream.ToArray().Should().Equal(expectedBytes);
        }
        public void WriteString_should_throw_when_subject_is_disposed()
        {
            var stream = Substitute.For<Stream>();
            var subject = new BsonStreamAdapter(stream);
            var value = "abc";
            subject.Dispose();

            Action action = () => subject.WriteString(value, Utf8Encodings.Strict);

            action.ShouldThrow<ObjectDisposedException>().And.ObjectName.Should().Be("BsonStreamAdapter");
        }
        public void WriteString_should_throw_when_value_is_null()
        {
            var stream = Substitute.For<Stream>();
            var subject = new BsonStreamAdapter(stream);

            Action action = () => subject.WriteString(null, Utf8Encodings.Strict);

            action.ShouldThrow<ArgumentNullException>().And.ParamName.Should().Be("value");
        }
        public void WriteString_should_throw_when_encoding_is_null()
        {
            var stream = Substitute.For<Stream>();
            var subject = new BsonStreamAdapter(stream);
            var value = "abc";

            Action action = () => subject.WriteString(value, null);

            action.ShouldThrow<ArgumentNullException>().And.ParamName.Should().Be("encoding");
        }