public void MigrateIfNeeded()
{
if (File.Exists(_migrator.SourceFilePath))
{
if (_migrator.NeedsMigration())
{
_migrator.Migrate();
}
}
}
public void Migrate_WithBackupFileInTheWay_DoesntThrow()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlVersion1);
var migrator = new FileMigrator(3, e.TestFilePath);
File.Copy(migrator.SourceFilePath, migrator.BackupFilePath); // Place the backup file in the way.
migrator.AddVersionStrategy(new XPathVersion(3, "/configuration/@version"));
migrator.AddMigrationStrategy(new XslStringMigrator(1, 2, EnvironmentForTest.Xsl1To2));
migrator.AddMigrationStrategy(new XslStringMigrator(2, 3, EnvironmentForTest.Xsl2To3));
migrator.Migrate();
}
}
public void Migrate_UsingXslAndXml_ArrviesAtVersion3()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlVersion1);
var migrator = new FileMigrator(3, e.TestFilePath);
migrator.AddVersionStrategy(new XPathVersion(3, "/configuration/@version"));
migrator.AddMigrationStrategy(new XslStringMigrator(1, 2, EnvironmentForTest.Xsl1To2));
migrator.AddMigrationStrategy(new XslStringMigrator(2, 3, EnvironmentForTest.Xsl2To3));
migrator.Migrate();
AssertThatXmlIn.File(e.TestFilePath).HasAtLeastOneMatchForXpath("configuration[@version='3']");
AssertThatXmlIn.File(e.TestFilePath).HasAtLeastOneMatchForXpath("/configuration/blah");
}
}
public void Migrate_MissingMigrationStrategy_LeavesWipFiles()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlVersion1);
var migrator = new FileMigrator(3, e.TestFilePath);
migrator.AddVersionStrategy(new XPathVersion(3, "/configuration/@version"));
migrator.AddMigrationStrategy(new XslStringMigrator(1, 2, EnvironmentForTest.Xsl1To2));
Assert.Throws <InvalidOperationException>(() => migrator.Migrate());
var files = Directory.GetFiles(e.Path);
Assert.That(files, Has.Some.SamePath(e.TestFilePath));
Assert.That(files, Has.Some.SamePath(e.TestFilePath + ".bak"));
Assert.That(files, Has.Some.SamePath(e.TestFilePath + ".Migrate_1_2"));
}
}
// No wip files left behind
public void Migrate_Succeeds_CleansUpWipFilesAndBackupFiles()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlVersion1);
var migrator = new FileMigrator(3, e.TestFilePath);
migrator.AddVersionStrategy(new XPathVersion(3, "/configuration/@version"));
migrator.AddMigrationStrategy(new XslStringMigrator(1, 2, EnvironmentForTest.Xsl1To2));
migrator.AddMigrationStrategy(new XslStringMigrator(2, 3, EnvironmentForTest.Xsl2To3));
migrator.Migrate();
var files = Directory.GetFiles(e.Path);
Assert.That(files.Length, Is.EqualTo(1));
Assert.That(files, Has.Some.SamePath(e.TestFilePath));
}
}