dsh-plugin-coop-with-vs/visualstudio-extension/Prophet.CoopWithDsh.Tests/SnapshotModelTests.cs

using System;
using System.IO;
using Xunit;

namespace Prophet.CoopWithDsh.Tests
{
    public sealed class SnapshotModelTests
    {
        [Fact]
        public void CreateDeduplicatesPathsAndPreservesDirtyState()
        {
            var snapshot = SnapshotModel.Create("one", 10, "F:\\Project\\App.sln", new[] {
                new OpenDocument { Path = "F:\\Project\\main.cs", Label = "main.cs", Dirty = false },
                new OpenDocument { Path = "f:\\project\\MAIN.cs", Label = "MAIN.cs", Dirty = true },
            }, new DateTimeOffset(2026, 1, 1, 0, 0, 0, TimeSpan.Zero));

            Assert.Equal(1, snapshot.Version);
            Assert.Equal("visualstudio", snapshot.Ide);
            Assert.Single(snapshot.Documents);
            Assert.True(snapshot.Documents[0].Dirty);
            Assert.Equal("2026-01-01T00:00:00.0000000Z", snapshot.UpdatedAt);
        }

        [Fact]
        public void PublisherWritesProtocolV1WithoutExternalJsonRuntime()
        {
            var root = Path.Combine(Path.GetTempPath(), "coop-with-dsh-test-" + Guid.NewGuid().ToString("N"));
            try
            {
                using (var publisher = new SnapshotPublisher(root))
                {
                    var snapshot = SnapshotModel.Create(publisher.InstanceId, 42, null, new[] {
                        new OpenDocument { Path = "F:\\Project\\main.cs", Label = "main.cs", Dirty = true },
                    }, new DateTimeOffset(2026, 1, 1, 0, 0, 0, TimeSpan.Zero));
                    publisher.Publish(snapshot);
                    var json = File.ReadAllText(publisher.FilePath);

                    Assert.Contains("\"version\":1", json);
                    Assert.Contains("\"ide\":\"visualstudio\"", json);
                    Assert.Contains("\"documents\":[{", json);
                    Assert.Contains("\"dirty\":true", json);
                    Assert.DoesNotContain("\"workspace\"", json);
                }
            }
            finally
            {
                if (Directory.Exists(root)) Directory.Delete(root, true);
            }
        }
    }
}