public static void VerifyArray()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
options.Converters.Add(new JsonStringEnumConverter());
dynamic obj = JsonSerializer.Deserialize <dynamic>(DynamicTests.Json, options);
Assert.IsType <JsonDynamicObject>(obj);
Assert.IsType <JsonDynamicObject>(obj);
Assert.IsType <JsonDynamicArray>(obj.MyArray);
Assert.Equal(2, obj.MyArray.Count);
Assert.Equal(1, (int)obj.MyArray[0]);
Assert.Equal(2, (int)obj.MyArray[1]);
// Ensure we can enumerate
int count = 0;
foreach (long value in obj.MyArray)
{
count++;
}
Assert.Equal(2, count);
// Ensure we can mutate through indexers
obj.MyArray[0] = 10;
Assert.Equal(10, (int)obj.MyArray[0]);
}
public static void JsonDynamicTypes_Serialize()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
// Guid (string)
string GuidJson = $"{DynamicTests.MyGuid.ToString("D")}";
string GuidJsonWithQuotes = $"\"{GuidJson}\"";
dynamic dynamicString = new JsonDynamicString(GuidJson, options);
Assert.Equal(DynamicTests.MyGuid, (Guid)dynamicString);
string json = JsonSerializer.Serialize(dynamicString, options);
Assert.Equal(GuidJsonWithQuotes, json);
// char (string)
dynamicString = new JsonDynamicString("a", options);
Assert.Equal('a', (char)dynamicString);
json = JsonSerializer.Serialize(dynamicString, options);
Assert.Equal("\"a\"", json);
// Number (JsonElement)
using (JsonDocument doc = JsonDocument.Parse($"{decimal.MaxValue}"))
{
dynamic dynamicNumber = new JsonDynamicNumber(doc.RootElement, options);
Assert.Equal <decimal>(decimal.MaxValue, (decimal)dynamicNumber);
json = JsonSerializer.Serialize(dynamicNumber, options);
Assert.Equal(decimal.MaxValue.ToString(), json);
}
// Boolean
dynamic dynamicBool = new JsonDynamicBoolean(true, options);
Assert.True(dynamicBool);
json = JsonSerializer.Serialize(dynamicBool, options);
Assert.Equal("true", json);
// Array
dynamic arr = new JsonDynamicArray(options);
arr.Add(1);
arr.Add(2);
json = JsonSerializer.Serialize(arr, options);
Assert.Equal("[1,2]", json);
// Object
dynamic dynamicObject = new JsonDynamicObject(options);
dynamicObject["One"] = 1;
dynamicObject["Two"] = 2;
json = JsonSerializer.Serialize(dynamicObject, options);
JsonTestHelper.AssertJsonEqual("{\"One\":1,\"Two\":2}", json);
}
public static void NullHandling()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
dynamic obj = JsonSerializer.Deserialize <dynamic>("null", options);
Assert.Null(obj);
}
public static void DynamicObject_MissingProperty()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
dynamic obj = JsonSerializer.Deserialize <dynamic>("{}", options);
// We return null here; ExpandoObject throws for missing properties.
Assert.Equal(null, obj.NonExistingProperty);
}
public static void JsonDynamicTypes_Deserialize_AsObject()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
Assert.IsType <JsonDynamicArray>(JsonSerializer.Deserialize <object>("[]", options));
Assert.IsType <JsonDynamicBoolean>(JsonSerializer.Deserialize <object>("true", options));
Assert.IsType <JsonDynamicNumber>(JsonSerializer.Deserialize <object>("0", options));
Assert.IsType <JsonDynamicNumber>(JsonSerializer.Deserialize <object>("1.2", options));
Assert.IsType <JsonDynamicObject>(JsonSerializer.Deserialize <object>("{}", options));
Assert.IsType <JsonDynamicString>(JsonSerializer.Deserialize <object>("\"str\"", options));
}
public static void NamingPoliciesAreNotUsed()
{
const string Json = "{\"myProperty\":42}";
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
options.PropertyNamingPolicy = new SimpleSnakeCasePolicy();
dynamic obj = JsonSerializer.Deserialize <dynamic>(Json, options);
string json = JsonSerializer.Serialize(obj, options);
JsonTestHelper.AssertJsonEqual(Json, json);
}
public static void QuotedNumbers_Serialize()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
options.NumberHandling = JsonNumberHandling.WriteAsString;
dynamic obj = 42L;
string json = JsonSerializer.Serialize <dynamic>(obj, options);
Assert.Equal("\"42\"", json);
obj = double.NaN;
json = JsonSerializer.Serialize <dynamic>(obj, options);
Assert.Equal("\"NaN\"", json);
}
public static void VerifyPrimitives()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
options.Converters.Add(new JsonStringEnumConverter());
dynamic obj = JsonSerializer.Deserialize <dynamic>(DynamicTests.Json, options);
Assert.IsType <JsonDynamicObject>(obj);
// JsonDynamicString has an implicit cast to string.
Assert.IsType <JsonDynamicString>(obj.MyString);
Assert.Equal("Hello", obj.MyString);
// Verify other string-based types.
Assert.Equal(MyCustomEnum.Hello, (MyCustomEnum)obj.MyString);
Assert.Equal(DynamicTests.MyDateTime, (DateTime)obj.MyDateTime);
Assert.Equal(DynamicTests.MyGuid, (Guid)obj.MyGuid);
// JsonDynamicBoolean has an implicit cast to bool.
Assert.IsType <JsonDynamicBoolean>(obj.MyBoolean);
Assert.True(obj.MyBoolean);
// Numbers must specify the type through a cast or assignment.
Assert.IsType <JsonDynamicNumber>(obj.MyInt);
Assert.ThrowsAny <Exception>(() => obj.MyInt == 42L);
Assert.Equal(42L, (long)obj.MyInt);
Assert.Equal((byte)42, (byte)obj.MyInt);
// Verify int-based Enum support through "unknown number type" fallback.
Assert.Equal(MyCustomEnum.FortyTwo, (MyCustomEnum)obj.MyInt);
// Verify floating point.
obj = JsonSerializer.Deserialize <dynamic>("4.2", options);
Assert.IsType <JsonDynamicNumber>(obj);
double dbl = (double)obj;
#if !BUILDING_INBOX_LIBRARY
string temp = dbl.ToString(System.Globalization.CultureInfo.InvariantCulture);
// The reader uses "G17" format which causes temp to be 4.2000000000000002 in this case.
dbl = double.Parse(temp, System.Globalization.CultureInfo.InvariantCulture);
#endif
Assert.Equal(4.2, dbl);
}
public static void VerifyMutableDom_WithoutUsingDynamicKeyword_JsonDynamicType()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
JsonDynamicObject obj = (JsonDynamicObject)JsonSerializer.Deserialize <object>(DynamicTests.Json, options);
Verify();
// Verify the values are round-trippable.
((JsonDynamicArray)obj["MyArray"]).RemoveAt(2);
Verify();
void Verify()
{
// Change some primitives.
((JsonDynamicType)obj["MyString"]).SetValue("Hello!");
((JsonDynamicType)obj["MyBoolean"]).SetValue(false);
((JsonDynamicType)obj["MyInt"]).SetValue(43);
// Add nested objects.
obj["MyObject"] = new JsonDynamicObject(options)
{
["MyString"] = new JsonDynamicString("Hello!!", options)
};
obj["Child"] = new JsonDynamicObject(options)
{
["ChildProp"] = new JsonDynamicNumber(1, options)
};
// Modify number elements.
var arr = (JsonDynamicArray)obj["MyArray"];
((JsonDynamicType)arr[0]).SetValue(2);
((JsonDynamicType)arr[1]).SetValue(3);
// Add an element.
arr.Add(new JsonDynamicNumber(42, options));
string json = JsonSerializer.Serialize(obj, options);
JsonTestHelper.AssertJsonEqual(ExpectedDomJson, json);
}
}
public static void QuotedNumbers_Deserialize()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
options.NumberHandling = JsonNumberHandling.AllowReadingFromString |
JsonNumberHandling.AllowNamedFloatingPointLiterals;
dynamic obj = JsonSerializer.Deserialize <dynamic>("\"42\"", options);
Assert.IsType <JsonDynamicString>(obj);
Assert.Equal(42, (int)obj);
obj = JsonSerializer.Deserialize <dynamic>("\"NaN\"", options);
Assert.IsType <JsonDynamicString>(obj);
Assert.Equal(double.NaN, (double)obj);
Assert.Equal(float.NaN, (float)obj);
}
public static void DynamicObject_CaseSensitivity()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
dynamic obj = JsonSerializer.Deserialize <dynamic>("{\"MyProperty\":42}", options);
Assert.Equal(42, (int)obj.MyProperty);
Assert.Null(obj.myproperty);
Assert.Null(obj.MYPROPERTY);
options = new JsonSerializerOptions();
options.EnableDynamicTypes();
options.PropertyNameCaseInsensitive = true;
obj = JsonSerializer.Deserialize <dynamic>("{\"MyProperty\":42}", options);
Assert.Equal(42, (int)obj.MyProperty);
Assert.Equal(42, (int)obj.myproperty);
Assert.Equal(42, (int)obj.MYPROPERTY);
}
public static void VerifyMutableDom_UsingDynamicKeyword()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
dynamic obj = JsonSerializer.Deserialize <dynamic>(DynamicTests.Json, options);
Assert.IsType <JsonDynamicObject>(obj);
// Change some primitives.
obj.MyString = "Hello!";
obj.MyBoolean = false;
obj.MyInt = 43;
// Add nested objects.
// Use JsonDynamicObject; ExpandoObject should not be used since it doesn't have the same semantics including
// null handling and case-sensitivity that respects JsonSerializerOptions.PropertyNameCaseInsensitive.
dynamic myObject = new JsonDynamicObject(options);
myObject.MyString = "Hello!!";
obj.MyObject = myObject;
dynamic child = new JsonDynamicObject(options);
child.ChildProp = 1;
obj.Child = child;
// Modify number elements.
dynamic arr = obj["MyArray"];
arr[0] = (int)arr[0] + 1;
arr[1] = (int)arr[1] + 1;
// Add an element.
arr.Add(42);
string json = JsonSerializer.Serialize(obj, options);
JsonTestHelper.AssertJsonEqual(ExpectedDomJson, json);
}
public static void VerifyMutableDom_WithoutUsingDynamicKeyword()
{
var options = new JsonSerializerOptions();
options.EnableDynamicTypes();
JsonDynamicObject obj = (JsonDynamicObject)JsonSerializer.Deserialize <object>(DynamicTests.Json, options);
// Change some primitives.
obj["MyString"] = "Hello!";
obj["MyBoolean"] = false;
obj["MyInt"] = 43;
// Add nested objects.
obj["MyObject"] = new JsonDynamicObject(options)
{
["MyString"] = "Hello!!"
};
obj["Child"] = new JsonDynamicObject(options)
{
["ChildProp"] = 1
};
// Modify number elements.
var arr = (JsonDynamicArray)obj["MyArray"];
var elem = (JsonDynamicNumber)arr[0];
elem.SetValue(elem.GetValue <int>() + 1);
elem = (JsonDynamicNumber)arr[1];
elem.SetValue(elem.GetValue <int>() + 1);
// Add an element.
arr.Add(42);
string json = JsonSerializer.Serialize(obj, options);
JsonTestHelper.AssertJsonEqual(ExpectedDomJson, json);
}