public void TestImporter()
{
const string streamPath = "Utilities.EF.Catalog.ssdl";
var stream = Assembly.GetAssembly(GetType()).GetManifestResourceStream(streamPath);
if (stream == null) Assert.IsTrue(false, "Cannot access ssdl embedded resource");
var doc = XDocument.Load(XmlReader.Create(stream));
//load entity framework into DSR
var importer = new EntityFrameworkImporter();
var schema = importer.ReadSsdl(doc);
//we changed the length of one column
ChangeMaxLength(doc);
//load the new schema into DSR
var schema2 = importer.ReadSsdl(doc);
//use our comparer to create migration script
var comparer = new DatabaseSchemaReader.Compare.CompareSchemas(schema, schema2);
var sql = comparer.Execute();
//(we could compare the EF model to the database
//var schema3 =
// new DatabaseReader(
// @"data source=.\SQLEXPRESS;initial catalog=ProductCatalog;integrated security=True;multipleactiveresultsets=True;App=Test",
// SqlType.SqlServer).ReadAll();
//var comparer2 = new DatabaseSchemaReader.Compare.CompareSchemas(schema, schema3);
//var sql2 = comparer2.Execute();
//Console.WriteLine(sql2);
//assert
Assert.IsTrue(sql.Contains("ALTER TABLE [dbo].[Categories] ALTER COLUMN [CategoryName] NVARCHAR (100)"), "Should generate alter table DDL");
}
public void TestImporterV3()
{
//arrange
//we have a EF v5 edmx (v3) as an embedded resource (this project is only EF 4)
const string streamPath = "DatabaseSchemaReaderTest.Utilities.EF.CatalogV3.edmxv3";
var stream = Assembly.GetAssembly(GetType()).GetManifestResourceStream(streamPath);
if (stream == null) Assert.IsTrue(false, "Cannot access edmxv3 embedded resource");
var doc = XDocument.Load(XmlReader.Create(stream));
//load entity framework into DSR
var importer = new EntityFrameworkImporter();
var schema = importer.ReadEdmx(doc);
var schema2 = importer.ReadEdmx(doc);
//act
//use our comparer to create migration script
var comparer = new DatabaseSchemaReader.Compare.CompareSchemas(schema, schema2);
var sql = comparer.Execute();
//assert
Assert.IsTrue(string.IsNullOrEmpty(sql), "Should have no differences");
}