From 6bb356ea027657fc654a6e56e1d65e42ea3c58a1 Mon Sep 17 00:00:00 2001
From: Laura Hausmann <laura@hausmann.dev>
Date: Sat, 20 Jan 2024 21:44:44 +0100
Subject: [PATCH] Add JSON-LD expand/compact/canonicalize tests

---
 .../Federation/ActivityStreams/LDHelpers.cs   |  4 +-
 .../Cryptography/LdSignatureTests.cs          |  2 -
 Iceshrimp.Tests/GlobalUsings.cs               |  3 +-
 Iceshrimp.Tests/Serialization/JsonLdTests.cs  | 48 +++++++++++++++++++
 4 files changed, 52 insertions(+), 5 deletions(-)
 create mode 100644 Iceshrimp.Tests/Serialization/JsonLdTests.cs

diff --git a/Iceshrimp.Backend/Core/Federation/ActivityStreams/LDHelpers.cs b/Iceshrimp.Backend/Core/Federation/ActivityStreams/LDHelpers.cs
index 06e92178..eaf2e87d 100644
--- a/Iceshrimp.Backend/Core/Federation/ActivityStreams/LDHelpers.cs
+++ b/Iceshrimp.Backend/Core/Federation/ActivityStreams/LDHelpers.cs
@@ -56,6 +56,6 @@ public static class LdHelpers {
 	public static JArray?  Expand(object        obj)  => Expand(JToken.FromObject(obj));
 	public static JObject? Compact(JToken?      json) => JsonLdProcessor.Compact(json, DefaultContext, Options);
 	public static JArray?  Expand(JToken?       json) => JsonLdProcessor.Expand(json, Options);
-	public static string   Canonicalize(JArray  json) => JsonLdProcessor.Canonicalize(json);
-	public static string   Canonicalize(JObject json) => JsonLdProcessor.Canonicalize([json]);
+	public static string   Canonicalize(JArray  json) => JsonLdProcessor.Canonicalize(json.DeepClone() as JArray);
+	public static string   Canonicalize(JObject json) => JsonLdProcessor.Canonicalize([json.DeepClone()]);
 }
\ No newline at end of file
diff --git a/Iceshrimp.Tests/Cryptography/LdSignatureTests.cs b/Iceshrimp.Tests/Cryptography/LdSignatureTests.cs
index 9e724393..ab2c8cb8 100644
--- a/Iceshrimp.Tests/Cryptography/LdSignatureTests.cs
+++ b/Iceshrimp.Tests/Cryptography/LdSignatureTests.cs
@@ -1,6 +1,4 @@
-using System.Diagnostics;
 using System.Security.Cryptography;
-using FluentAssertions;
 using Iceshrimp.Backend.Core.Federation.ActivityStreams;
 using Iceshrimp.Backend.Core.Federation.ActivityStreams.Types;
 using Iceshrimp.Backend.Core.Federation.Cryptography;
diff --git a/Iceshrimp.Tests/GlobalUsings.cs b/Iceshrimp.Tests/GlobalUsings.cs
index ab67c7ea..944e5449 100644
--- a/Iceshrimp.Tests/GlobalUsings.cs
+++ b/Iceshrimp.Tests/GlobalUsings.cs
@@ -1 +1,2 @@
-global using Microsoft.VisualStudio.TestTools.UnitTesting;
\ No newline at end of file
+global using Microsoft.VisualStudio.TestTools.UnitTesting;
+global using FluentAssertions;
\ No newline at end of file
diff --git a/Iceshrimp.Tests/Serialization/JsonLdTests.cs b/Iceshrimp.Tests/Serialization/JsonLdTests.cs
new file mode 100644
index 00000000..efab413d
--- /dev/null
+++ b/Iceshrimp.Tests/Serialization/JsonLdTests.cs
@@ -0,0 +1,48 @@
+using Iceshrimp.Backend.Core.Federation.ActivityStreams;
+using Iceshrimp.Backend.Core.Federation.ActivityStreams.Types;
+using Iceshrimp.Backend.Core.Helpers;
+
+namespace Iceshrimp.Tests.Serialization;
+
+[TestClass]
+public class JsonLdTests {
+	private ASActor _actor = null!;
+
+	[TestInitialize]
+	public void Initialize() {
+		_actor = new ASActor {
+			Id             = $"https://example.org/users/{IdHelpers.GenerateSlowflakeId()}",
+			Type           = ["https://www.w3.org/ns/activitystreams#Person"],
+			Url            = new ASLink("https://example.org/@test"),
+			Username       = "test",
+			DisplayName    = "Test account",
+			IsCat          = false,
+			IsDiscoverable = true,
+			IsLocked       = true
+		};
+	}
+
+	[TestMethod]
+	public void RoundtripTest() {
+		var expanded = LdHelpers.Expand(_actor)!;
+		expanded.Should().NotBeNull();
+
+		var canonicalized = LdHelpers.Canonicalize(expanded);
+		canonicalized.Should().NotBeNull();
+
+		var compacted = LdHelpers.Compact(expanded);
+		compacted.Should().NotBeNull();
+
+		var expanded2 = LdHelpers.Expand(compacted)!;
+		expanded2.Should().NotBeNull();
+		expanded2.Should().BeEquivalentTo(expanded);
+
+		var compacted2 = LdHelpers.Compact(expanded2)!;
+		compacted2.Should().NotBeNull();
+		compacted2.Should().BeEquivalentTo(compacted);
+
+		var canonicalized2 = LdHelpers.Canonicalize(expanded2);
+		canonicalized2.Should().NotBeNull();
+		canonicalized2.Should().BeEquivalentTo(canonicalized);
+	}
+}
\ No newline at end of file