public void JsonContent_CopyTo_Succeeds()
{
Person person = Person.Create();
using JsonContent content = JsonContent.Create(person);
using MemoryStream stream = new MemoryStream();
// HttpContent.CopyTo internally calls overriden JsonContent.SerializeToStream, which is the targeted method of this test.
content.CopyTo(stream, context: null, cancellationToken: default);
stream.Seek(0, SeekOrigin.Begin);
using StreamReader reader = new StreamReader(stream);
string json = reader.ReadToEnd();
Assert.Equal(person.Serialize(JsonOptions.DefaultSerializerOptions), json);
}
