1 files changed, 53 insertions, 0 deletions
diff --git a/Tests/LibMatrix.Tests/Tests/CanonicalJsonTests.cs b/Tests/LibMatrix.Tests/Tests/CanonicalJsonTests.cs
new file mode 100644
index 0000000..c7fde54
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+++ b/Tests/LibMatrix.Tests/Tests/CanonicalJsonTests.cs
@@ -0,0 +1,53 @@
+using System.Collections.Frozen;
+using System.Diagnostics;
+using System.Text.Json;
+using LibMatrix.Extensions;
+using LibMatrix.Services;
+using LibMatrix.Tests.Abstractions;
+using LibMatrix.Tests.DataTests;
+using LibMatrix.Tests.Fixtures;
+using Xunit.Abstractions;
+using Xunit.Microsoft.DependencyInjection.Abstracts;
+using Xunit.Sdk;
+
+namespace LibMatrix.Tests.Tests;
+
+public class CanonicalJsonTests(ITestOutputHelper testOutputHelper, TestFixture fixture) : TestBed<TestFixture>(testOutputHelper, fixture) {
+    // Test cases from https://spec.matrix.org/v1.11/appendices/#examples
+    private static readonly FrozenDictionary<string, string> testCases = new Dictionary<string, string>() {
+        ["{}"] = "{}",
+        ["{\n    \"one\": 1,\n    \"two\": \"Two\"\n}\n"] = "{\"one\":1,\"two\":\"Two\"}",
+        ["{\n    \"b\": \"2\",\n    \"a\": \"1\"\n}\n"] = "{\"a\":\"1\",\"b\":\"2\"}",
+        ["{\"b\":\"2\",\"a\":\"1\"}"] = "{\"a\":\"1\",\"b\":\"2\"}",
+        ["{\n    \"auth\": {\n        \"success\": true,\n        \"mxid\": \"@john.doe:example.com\",\n        \"profile\": {\n            \"display_name\": \"John Doe\",\n            \"three_pids\": [\n                {\n                    \"medium\": \"email\",\n                    \"address\": \"[email protected]\"\n                },\n                {\n                    \"medium\": \"msisdn\",\n                    \"address\": \"123456789\"\n                }\n            ]\n        }\n    }\n}\n"] =
+            "{\"auth\":{\"mxid\":\"@john.doe:example.com\",\"profile\":{\"display_name\":\"John Doe\",\"three_pids\":[{\"address\":\"[email protected]\",\"medium\":\"email\"},{\"address\":\"123456789\",\"medium\":\"msisdn\"}]},\"success\":true}}",
+        ["{\n    \"a\": \"日本語\"\n}\n"] = "{\"a\":\"日本語\"}",
+        ["{\n    \"本\": 2,\n    \"日\": 1\n}\n"] = "{\"日\":1,\"本\":2}",
+        ["{\n    \"a\": \"\\u65E5\"\n}\n"] = "{\"a\":\"日\"}",
+        ["{\n    \"a\": null\n}\n"] = "{\"a\":null}",
+        ["{\n    \"a\": -0,\n    \"b\": 1e10\n}\n"] = "{\"a\":0,\"b\":10000000000}"
+    }.ToFrozenDictionary();
+
+    [Fact]
+    public void SpecTests() {
+        var i = 0;
+        foreach (var (input, expected) in testCases) {
+            var deserialised = JsonSerializer.Deserialize<Dictionary<string, object>>(input);
+            var actual = CanonicalJsonSerializer.Serialize(deserialised);
+            Assert.Equal(expected, actual);
+            // testOutputHelper.WriteLine($"Test case {i++} successful!");
+        }
+    }
+
+    [Fact]
+    public void RepeatTests() {
+        var sw = Stopwatch.StartNew();
+        for (int i = 0; i < 1_000_000; i++) {
+            SpecTests();
+            if (i % 10000 == 0) {
+                testOutputHelper.WriteLine($"{i} loops successful! Delta: {sw.Elapsed}");
+                sw.Restart();
+            }
+        }
+    }
+}
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