public void UpdateDocument_InvalidatesCache()
{
//Arrange
var permissions = SetupPermissions();
var permission = permissions.Values.First();
var mockDbAccessService = SetupMockDocumentDbService(permissions);
var cachingDocumentDbService = new CachingDocumentDbService(mockDbAccessService.Object,
new MemoryCache(new MemoryCacheOptions()));
//Act
this.AssertPermissionRetrievedAsync(permission, cachingDocumentDbService).Wait();
cachingDocumentDbService.UpdateDocument(permission.Identifier, permission).Wait();
this.AssertPermissionRetrievedAsync(permission, cachingDocumentDbService).Wait();
//Assert
mockDbAccessService.Verify(dbAccessService => dbAccessService.GetDocument <Permission>(It.IsAny <string>()), Times.Exactly(2));
}
