namespace AnthropicClient.Tests.Unit.Models; public class DocumentSourceTests { [Fact] public void Constructor_WhenCalledWithValidArguments_ItShouldSetProperties() { var mediaType = "application/pdf"; var data = "base64data"; var source = new DocumentSource(mediaType, data); source.MediaType.Should().Be(mediaType); source.Data.Should().Be(data); } [Fact] public void Constructor_WhenCalledWithNullMediaType_ItShouldThrowArgumentNullException() { string? mediaType = null; var data = "base64data"; var action = () => new DocumentSource(mediaType!, data); action.Should().Throw(); } [Fact] public void Constructor_WhenCalledWithNullData_ItShouldThrowArgumentNullException() { var mediaType = "application/pdf"; string? data = null; var action = () => new DocumentSource(mediaType, data!); action.Should().Throw(); } [Fact] public void Constructor_WhenCalled_ItShouldHaveTypePropertySetToBase64() { var mediaType = "application/pdf"; var data = "base64data"; var source = new DocumentSource(mediaType, data); source.Type.Should().Be("base64"); } }