Make time based values on JwtClaimsData

NATS.Jwt.Tests/Models/JwtClaimsDataTests.cs

@@ -1,7 +1,10 @@
 // Copyright (c) The NATS Authors.
 // Licensed under the Apache License, Version 2.0.
 
+using System;
 using System.Text.Json;
+using System.Text.Json.Serialization;
+using NATS.Jwt.Internal;
 using NATS.Jwt.Models;
 using Xunit;
 
@@ -16,12 +19,12 @@ public void SerializeDeserialize_FullJwtClaimsData_ShouldSucceed()
         {
             Audience = "test_audience",
             Id = "test_id",
-            IssuedAt = 1609459200, // 2021-01-01
+            IssuedAt = DateTimeOffset.FromUnixTimeSeconds(1609459200), // 2021-01-01
             Issuer = "test_issuer",
             Name = "Test JWT",
             Subject = "test_subject",
-            Expires = 1735689600, // 2025-01-01
-            NotBefore = 1609459200, // 2021-01-01
+            Expires = DateTimeOffset.FromUnixTimeSeconds(1735689600), // 2025-01-01
+            NotBefore = DateTimeOffset.FromUnixTimeSeconds(1609459200), // 2021-01-01
         };
 
         string json = JsonSerializer.Serialize(claims);
@@ -53,10 +56,10 @@ public void SerializeDeserialize_MinimalJwtClaimsData_ShouldSucceed()
         Assert.Equal(claims.Issuer, deserialized.Issuer);
         Assert.Null(deserialized.Audience);
         Assert.Null(deserialized.Id);
-        Assert.Equal(0, deserialized.IssuedAt);
+        Assert.Null(deserialized.IssuedAt);
         Assert.Null(deserialized.Name);
-        Assert.Equal(0, deserialized.Expires);
-        Assert.Equal(0, deserialized.NotBefore);
+        Assert.Null(deserialized.Expires);
+        Assert.Null(deserialized.NotBefore);
     }
 
     [Fact]
@@ -76,10 +79,10 @@ public void Deserialize_ExtraFields_ShouldIgnore()
         Assert.Equal("test_issuer", deserialized.Issuer);
         Assert.Null(deserialized.Audience);
         Assert.Null(deserialized.Id);
-        Assert.Equal(0, deserialized.IssuedAt);
+        Assert.Null(deserialized.IssuedAt);
         Assert.Null(deserialized.Name);
-        Assert.Equal(0, deserialized.Expires);
-        Assert.Equal(0, deserialized.NotBefore);
+        Assert.Null(deserialized.Expires);
+        Assert.Null(deserialized.NotBefore);
     }
 
     [Fact]
@@ -110,4 +113,150 @@ public void Deserialize_InvalidJson_ShouldThrowException()
 
         Assert.Throws<JsonException>(() => JsonSerializer.Deserialize<JwtClaimsData>(invalidJson));
     }
+
+    [Fact]
+    public void Deserialize_WithNullValues_ShouldSetPropertiesToNull()
+    {
+        // Arrange
+        var json = "{}";
+
+        // Act
+        var claims = JsonSerializer.Deserialize<JwtClaimsData>(json);
+
+        // Assert
+        Assert.Null(claims.Audience);
+        Assert.Null(claims.Id);
+        Assert.Null(claims.IssuedAt);
+        Assert.Null(claims.Issuer);
+        Assert.Null(claims.Name);
+        Assert.Null(claims.Subject);
+        Assert.Null(claims.Expires);
+        Assert.Null(claims.NotBefore);
+    }
+
+    [Fact]
+    public void Serialize_WithNullValues_ShouldOmitNullProperties()
+    {
+        // Arrange
+        var claims = new JwtClaimsData();
+
+        // Act
+        var json = JsonSerializer.Serialize(claims);
+
+        // Assert
+        Assert.Equal("{}", json);
+    }
+
+    [Fact]
+    public void Deserialize_WithUnixTimestamps_ShouldConvertCorrectly()
+    {
+        // Arrange
+        var json = @"{
+                ""iat"": 1609459200,
+                ""exp"": 1609545600,
+                ""nbf"": 1609372800
+            }";
+
+        // Act
+        var claims = JsonSerializer.Deserialize<JwtClaimsData>(json);
+
+        // Assert
+        Assert.Equal(new DateTimeOffset(2021, 1, 1, 0, 0, 0, TimeSpan.Zero), claims.IssuedAt);
+        Assert.Equal(new DateTimeOffset(2021, 1, 2, 0, 0, 0, TimeSpan.Zero), claims.Expires);
+        Assert.Equal(new DateTimeOffset(2020, 12, 31, 0, 0, 0, TimeSpan.Zero), claims.NotBefore);
+    }
+
+    [Fact]
+    public void NatsJsonDateTimeOffsetConverter_Read_ValidNumber_ShouldConvertCorrectly()
+    {
+        // Arrange
+        var json = @"{""Timestamp"": 1609459200}";
+        var options = new JsonSerializerOptions
+        {
+            Converters = { new NatsJsonDateTimeOffsetConverter() }
+        };
+
+        // Act
+        var result = JsonSerializer.Deserialize<TestClass>(json, options);
+
+        // Assert
+        Assert.Equal(new DateTimeOffset(2021, 1, 1, 0, 0, 0, TimeSpan.Zero), result.Timestamp);
+    }
+
+    [Fact]
+    public void NatsJsonDateTimeOffsetConverter_Read_NullValue_ShouldReturnNull()
+    {
+        // Arrange
+        var json = @"{""Timestamp"": null}";
+        var options = new JsonSerializerOptions
+        {
+            Converters = { new NatsJsonDateTimeOffsetConverter() }
+        };
+
+        // Act
+        var result = JsonSerializer.Deserialize<TestClass>(json, options);
+
+        // Assert
+        Assert.Null(result.Timestamp);
+    }
+
+    [Fact]
+    public void NatsJsonDateTimeOffsetConverter_Read_InvalidTokenType_ShouldThrowException()
+    {
+        // Arrange
+        var json = @"{""Timestamp"": ""not a number""}";
+        var options = new JsonSerializerOptions
+        {
+            Converters = { new NatsJsonDateTimeOffsetConverter() },
+        };
+
+        // Act & Assert
+        Assert.Throws<InvalidOperationException>(() => JsonSerializer.Deserialize<TestClass>(json, options));
+    }
+
+    [Fact]
+    public void NatsJsonDateTimeOffsetConverter_Write_ValidValue_ShouldWriteNumber()
+    {
+        // Arrange
+        var testObject = new TestClass
+        {
+            Timestamp = new DateTimeOffset(2021, 1, 1, 0, 0, 0, TimeSpan.Zero)
+        };
+        var options = new JsonSerializerOptions
+        {
+            Converters = { new NatsJsonDateTimeOffsetConverter() }
+        };
+
+        // Act
+        var json = JsonSerializer.Serialize(testObject, options);
+
+        // Assert
+        Assert.Equal(@"{""Timestamp"":1609459200}", json);
+    }
+
+    [Fact]
+    public void NatsJsonDateTimeOffsetConverter_Write_NullValue_ShouldWriteNull()
+    {
+        // Arrange
+        var testObject = new TestClass
+        {
+            Timestamp = null
+        };
+        var options = new JsonSerializerOptions
+        {
+            Converters = { new NatsJsonDateTimeOffsetConverter() }
+        };
+
+        // Act
+        var json = JsonSerializer.Serialize(testObject, options);
+
+        // Assert
+        Assert.Equal(@"{""Timestamp"":null}", json);
+    }
+
+    private class TestClass
+    {
+        [JsonConverter(typeof(NatsJsonDateTimeOffsetConverter))]
+        public DateTimeOffset? Timestamp { get; set; }
+    }
 }

NATS.Jwt.Tests/Models/NatsAccountClaimsTests.cs

@@ -20,9 +20,9 @@ public void SerializeDeserialize_FullNatsAccountClaims_ShouldSucceed()
             Issuer = "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII",
             Name = "Full Test Account",
             Audience = "test_audience",
-            Expires = 1735689600, // 2025-01-01
-            IssuedAt = 1609459200, // 2021-01-01
-            NotBefore = 1609459200, // 2021-01-01
+            Expires = DateTimeOffset.FromUnixTimeSeconds(1735689600), // 2025-01-01
+            IssuedAt = DateTimeOffset.FromUnixTimeSeconds(1609459200), // 2021-01-01
+            NotBefore = DateTimeOffset.FromUnixTimeSeconds(1609459200), // 2021-01-01
             Id = "jti_test",
             Account = new NatsAccount
             {
@@ -102,7 +102,8 @@ public void SerializeDeserialize_FullNatsAccountClaims_ShouldSucceed()
                     {
                         Pub = new NatsPermission
                         {
-                            Allow = new List<string> { "allowed.>", }, Deny = new List<string> { "denied.>", },
+                            Allow = new List<string> { "allowed.>", },
+                            Deny = new List<string> { "denied.>", },
                         },
                         Sub =
                             new NatsPermission

NATS.Jwt.Tests/Models/NatsActivationClaimsTests.cs

@@ -1,6 +1,7 @@
 // Copyright (c) The NATS Authors.
 // Licensed under the Apache License, Version 2.0.
 
+using System;
 using System.Text.Json;
 using NATS.Jwt.Models;
 using Xunit;
@@ -18,9 +19,9 @@ public void SerializeDeserialize_FullNatsActivationClaims_ShouldSucceed()
             Issuer = "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII",
             Name = "Full Test Activation",
             Audience = "test_audience",
-            Expires = 1735689600, // 2025-01-01
-            IssuedAt = 1609459200, // 2021-01-01
-            NotBefore = 1609459200, // 2021-01-01
+            Expires = DateTimeOffset.FromUnixTimeSeconds(1735689600), // 2025-01-01
+            IssuedAt = DateTimeOffset.FromUnixTimeSeconds(1609459200), // 2021-01-01
+            NotBefore = DateTimeOffset.FromUnixTimeSeconds(1609459200), // 2021-01-01
             Id = "jti_test",
             Activation = new NatsActivation
             {

NATS.Jwt.Tests/Models/NatsAuthorizationRequestClaimsTests.cs

@@ -1,6 +1,7 @@
 // Copyright (c) The NATS Authors.
 // Licensed under the Apache License, Version 2.0.
 
+using System;
 using System.Collections.Generic;
 using System.Text.Json;
 using NATS.Jwt.Models;
@@ -19,9 +20,9 @@ public void SerializeDeserialize_FullNatsAuthorizationRequestClaims_ShouldSuccee
             Issuer = "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII",
             Name = "Full Test Authorization Request",
             Audience = "test_audience",
-            Expires = 1735689600,
-            IssuedAt = 1609459200,
-            NotBefore = 1609459200,
+            Expires = DateTimeOffset.FromUnixTimeSeconds(1735689600),
+            IssuedAt = DateTimeOffset.FromUnixTimeSeconds(1609459200),
+            NotBefore = DateTimeOffset.FromUnixTimeSeconds(1609459200),
             Id = "jti_test",
             AuthorizationRequest = new NatsAuthorizationRequest
             {

NATS.Jwt.Tests/Models/NatsAuthorizationResponseClaimsTests.cs

@@ -1,6 +1,7 @@
 // Copyright (c) The NATS Authors.
 // Licensed under the Apache License, Version 2.0.
 
+using System;
 using System.Text.Json;
 using NATS.Jwt.Models;
 using Xunit;
@@ -18,9 +19,9 @@ public void SerializeDeserialize_FullNatsAuthorizationResponseClaims_ShouldSucce
             Issuer = "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII",
             Name = "Full Test Authorization Response",
             Audience = "test_audience",
-            Expires = 1735689600,
-            IssuedAt = 1609459200,
-            NotBefore = 1609459200,
+            Expires = DateTimeOffset.FromUnixTimeSeconds(1735689600),
+            IssuedAt = DateTimeOffset.FromUnixTimeSeconds(1609459200),
+            NotBefore = DateTimeOffset.FromUnixTimeSeconds(1609459200),
             Id = "jti_test",
             AuthorizationResponse = new NatsAuthorizationResponse
             {

NATS.Jwt.Tests/Models/NatsGenericFieldsClaimsTests.cs

@@ -1,6 +1,7 @@
 // Copyright (c) The NATS Authors.
 // Licensed under the Apache License, Version 2.0.
 
+using System;
 using System.Text.Json;
 using NATS.Jwt.Models;
 using Xunit;
@@ -18,9 +19,9 @@ public void SerializeDeserialize_FullNatsGenericFieldsClaims_ShouldSucceed()
             Issuer = "IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII",
             Name = "Full Test Generic Fields",
             Audience = "test_audience",
-            Expires = 1735689600,
-            IssuedAt = 1609459200,
-            NotBefore = 1609459200,
+            Expires = DateTimeOffset.FromUnixTimeSeconds(1735689600),
+            IssuedAt = DateTimeOffset.FromUnixTimeSeconds(1609459200),
+            NotBefore = DateTimeOffset.FromUnixTimeSeconds(1609459200),
             Id = "jti_test",
             GenericFields = new NatsGenericFields
             {

NATS.Jwt.Tests/Models/NatsJsonDateTimeOffsetConverterTests.cs

@@ -0,0 +1,76 @@
+// Copyright (c) The NATS Authors.
+// Licensed under the Apache License, Version 2.0.
+
+using System;
+using System.IO;
+using System.Text.Json;
+using NATS.Jwt.Internal;
+using Xunit;
+
+namespace NATS.Jwt.Tests.Models;
+
+public class NatsJsonDateTimeOffsetConverterTests
+{
+    [Fact]
+    public void Read_UnsupportedType_ShouldThrowException()
+    {
+        // Act & Assert
+        var ex = Assert.Throws<InvalidOperationException>(() =>
+        {
+            // Arrange
+            var converter = new TestConverter();
+            var reader = new Utf8JsonReader(JsonSerializer.SerializeToUtf8Bytes(123));
+            reader.Read(); // Move to the first token
+            converter.Read(ref reader, typeof(DateTime), new JsonSerializerOptions());
+        });
+        Assert.Contains("Reading unknown date type", ex.Message);
+    }
+
+    [Fact]
+    public void Write_ValidValue_ShouldWriteCorrectly()
+    {
+        // Arrange
+        var converter = new TestConverter();
+        MemoryStream memoryStream = new();
+        var writer = new Utf8JsonWriter(memoryStream);
+        var value = new DateTimeOffset(2021, 1, 1, 0, 0, 0, TimeSpan.Zero);
+
+        // Act
+        converter.Write(writer, value, new JsonSerializerOptions());
+        writer.Flush();
+
+        // Assert
+        var json = System.Text.Encoding.UTF8.GetString(memoryStream.ToArray());
+        Assert.Equal("1609459200", json);
+    }
+
+    [Fact]
+    public void Write_NullValue_ShouldWriteCorrectly()
+    {
+        // Arrange
+        var converter = new TestConverter();
+        MemoryStream memoryStream = new();
+        var writer = new Utf8JsonWriter(memoryStream);
+
+        // Act
+        converter.Write(writer, null, new JsonSerializerOptions());
+        writer.Flush();
+
+        // Assert
+        var json = System.Text.Encoding.UTF8.GetString(memoryStream.ToArray());
+        Assert.Equal("null", json);
+    }
+
+    private class TestConverter : NatsJsonDateTimeOffsetConverter
+    {
+        public new void Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            base.Read(ref reader, typeToConvert, options);
+        }
+
+        public new void Write(Utf8JsonWriter writer, DateTimeOffset? value, JsonSerializerOptions options)
+        {
+            base.Write(writer, value, options);
+        }
+    }
+}