public override Type BindToType(string assemblyName, string typeName)
{
var versionedTypeName = VersionedTypeName.Parse(typeName);
var originalTypeFullName = $"{versionedTypeName.OriginalName}, {assemblyName}";
var originalType = Type.GetType(originalTypeFullName, false);
if (originalType == null)
{
throw new CantFindTypeException(originalTypeFullName);
}
int typeMaxVersion = 0;
if (!_typeMaxVersions.TryGetValue(originalType, out typeMaxVersion))
{
throw new CantFindTypeLatestVersionException(originalType);
}
//if max version is reached, should return type without version number
//because it is most recent version used in code now
if (typeMaxVersion == versionedTypeName.Version)
{
return(originalType);
}
//otherwise return original type, as it acts like "history"
originalTypeFullName = $"{typeName}, {assemblyName}";
return(Type.GetType(originalTypeFullName));
}
public void Original_version_is_resolved_with_default_version()
{
var versionedType = VersionedTypeName.Parse(typeof(TestType), 10);
Assert.AreEqual(typeof(TestType).Name, versionedType.OriginalName);
Assert.AreEqual(10, versionedType.Version);
}
public void Given_historical_event_it_writes_version_from_type_name()
{
var evt = new TestEvent_V1(Guid.NewGuid());
var serializedString = SerializedToString(evt);
var expectedTypeName = VersionedTypeName.Parse(typeof(TestEvent_V1)).ToString();
Assert.True(serializedString.Contains(expectedTypeName));
}
public void Given_original_event_it_writes_its_version_in_type_name()
{
var evt = new TestEvent(Guid.NewGuid().ToString());
var serializedString = SerializedToString(evt);
var expectedTypeName = VersionedTypeName.Parse(typeof(TestEvent), 2).ToString();
Assert.Contains(expectedTypeName, serializedString);
}
public void Given_history_type_version_is_taken_from_type_name()
{
var versionedType = VersionedTypeName.Parse(typeof(TestType_V1));
Assert.AreEqual(1, versionedType.Version);
}
public void Given_bad_exeption_is_raised()
{
Assert.Throws <VersionedTypeParseExeption>(() => VersionedTypeName.Parse(typeof(BadNamedType_V1_V1)));
}