fix

src/CommandQuery.SystemTextJson/Internal/JsonExtensions.cs

@@ -1,19 +1,52 @@
 using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace CommandQuery.SystemTextJson
 {
     internal static class JsonExtensions
     {
-        internal static object? SafeDeserialize(this string json, Type type, JsonSerializerOptions? options)
+        private static readonly JsonSerializerOptions _options = GetJsonSerializerOptions();
+
+        internal static object? SafeDeserialize(this string json, Type type, JsonSerializerOptions? options = null)
+        {
+            try
+            {
+                return JsonSerializer.Deserialize(json, type, options ?? _options);
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        internal static object? SafeDeserialize(this IDictionary<string, object>? dictionary, Type type)
         {
+            if (dictionary is null)
+            {
+                return null;
+            }
+
             try
             {
-                return JsonSerializer.Deserialize(json, type, options);
+                return JsonSerializer.Deserialize(JsonSerializer.Serialize(dictionary), type, _options);
             }
             catch
             {
                 return null;
             }
         }
+
+        private static JsonSerializerOptions GetJsonSerializerOptions()
+        {
+            var result = new JsonSerializerOptions
+            {
+                PropertyNameCaseInsensitive = true,
+                NumberHandling = JsonNumberHandling.AllowReadingFromString,
+            };
+            result.Converters.Add(new JsonStringEnumConverter());
+            result.Converters.Add(new BooleanConverter());
+
+            return result;
+        }
     }
 }

tests/CommandQuery.Benchmark/JsonBenchmarks.cs

@@ -43,10 +43,10 @@ public void GlobalSetup()
         // SystemTextJson
 
         [Benchmark]
-        public object SystemTextJson_JsonExtensions_SafeDeserialize() => SystemTextJson.JsonExtensions.SafeDeserialize(_systemTextJsonString, typeof(FakeComplexObject), null);
+        public object SystemTextJson_string_SafeDeserialize() => SystemTextJson.JsonExtensions.SafeDeserialize(_systemTextJsonString, typeof(FakeComplexObject), null);
 
         [Benchmark]
-        public object SystemTextJson_DictionaryExtensions_SafeDeserialize() => SystemTextJson.DictionaryExtensions.SafeDeserialize(_dictionary, typeof(FakeComplexObject));
+        public object SystemTextJson_Dictionary_SafeDeserialize() => SystemTextJson.JsonExtensions.SafeDeserialize(_dictionary, typeof(FakeComplexObject));
     }
 
     public class FakeComplexObject

tests/CommandQuery.Tests/SystemTextJson/Internal/JsonExtensionsTests.cs

@@ -9,26 +9,89 @@ namespace CommandQuery.Tests.SystemTextJson.Internal
     public class JsonExtensionsTests
     {
         [LoFu, Test]
-        public void SafeDeserialize()
+        public void SafeDeserialize_string()
         {
             void should_return_an_object()
             {
-                "{}".SafeDeserialize(typeof(object), null).Should().NotBeNull();
+                "{}".SafeDeserialize(typeof(object)).Should().NotBeNull();
 
                 JsonSerializer.Serialize(TestData.FakeComplexQuery)
-                    .SafeDeserialize(typeof(FakeComplexQuery), null)
+                    .SafeDeserialize(typeof(FakeComplexQuery))
                     .Should().BeEquivalentTo(TestData.FakeComplexQuery);
 
                 JsonSerializer.Serialize(TestData.FakeDateTimeQuery)
-                    .SafeDeserialize(typeof(FakeDateTimeQuery), null)
+                    .SafeDeserialize(typeof(FakeDateTimeQuery))
                     .Should().BeEquivalentTo(TestData.FakeDateTimeQuery);
 
                 JsonSerializer.Serialize(TestData.FakeNestedQuery)
-                    .SafeDeserialize(typeof(FakeNestedQuery), null)
+                    .SafeDeserialize(typeof(FakeNestedQuery))
                     .Should().BeEquivalentTo(TestData.FakeNestedQuery);
             }
 
-            void should_return_null_if_deserialization_fails() => ((string)null).SafeDeserialize(typeof(object), null).Should().BeNull();
+            void should_have_sane_defaults()
+            {
+                var result = "{\"int32\":\"1\"}".SafeDeserialize(typeof(FakeComplexQuery)) as FakeComplexQuery;
+                result.Int32.Should().Be(1);
+            }
+
+            void should_use_options_when_provided()
+            {
+                var options = new JsonSerializerOptions(JsonSerializerDefaults.Web);
+                var result = "{\"int32\":\"1\"}".SafeDeserialize(typeof(FakeComplexQuery), options) as FakeComplexQuery;
+                result.Int32.Should().Be(1);
+            }
+
+            void should_return_null_if_deserialization_fails() => ((string)null).SafeDeserialize(typeof(object)).Should().BeNull();
+        }
+
+        [LoFu, Test]
+        public void SafeDeserialize_Dictionary()
+        {
+            void should_set_the_property_values()
+            {
+                var subject = TestData.FakeComplexQuery_As_Dictionary_Of_String_Object;
+                var result = subject.SafeDeserialize(typeof(FakeComplexQuery)) as FakeComplexQuery;
+                result.Should().BeEquivalentTo(TestData.FakeComplexQuery);
+
+                subject = TestData.FakeComplexQuery_As_Dictionary_Of_String_Object.ToDictionary(x => x.Key.ToLower(), x => x.Value);
+                result = subject.SafeDeserialize(typeof(FakeComplexQuery)) as FakeComplexQuery;
+                result.Should().BeEquivalentTo(TestData.FakeComplexQuery);
+            }
+
+            void should_set_the_property_values_of_DateTime_kinds()
+            {
+                var subject = TestData.FakeDateTimeQuery_As_Dictionary_Of_String_Object;
+
+                var result = subject.SafeDeserialize(typeof(FakeDateTimeQuery)) as FakeDateTimeQuery;
+
+                result.Should().BeEquivalentTo(TestData.FakeDateTimeQuery);
+            }
+
+            void should_not_set_the_property_values_of_nested_objects()
+            {
+                var subject = TestData.FakeNestedQuery_As_Dictionary_Of_String_Object;
+
+                var result = subject.SafeDeserialize(typeof(FakeNestedQuery)) as FakeNestedQuery;
+
+                result.Should().BeEquivalentTo(TestData.FakeNestedQuery);
+            }
+
+            void should_return_null_if_dictionary_is_null()
+            {
+                IDictionary<string, object> subject = null;
+
+                subject.SafeDeserialize(typeof(FakeComplexQuery)).Should().BeNull();
+            }
+
+            void should_return_null_if_conversion_fails()
+            {
+                var subject = new Dictionary<string, object>
+                {
+                    { "Guid", "fail" }
+                };
+
+                subject.SafeDeserialize(typeof(FakeComplexQuery)).Should().BeNull();
+            }
         }
     }
 }