public void FileVersion_OneStrategy_Correct()
{
var migrator = new FileMigrator(10, "somefile");
migrator.AddVersionStrategy(new VersionStrategyThatsGood(8, 10));
Assert.That(migrator.GetFileVersion(), Is.EqualTo(8));
}
public void FileVersion_TwoStragiesSort_UsesHigherStrategyFirst()
{
var migrator = new FileMigrator(10, "somefile");
migrator.AddVersionStrategy(new VersionStrategyThatThrows(2));
migrator.AddVersionStrategy(new VersionStrategyThatsGood(8, 10));
Assert.That(migrator.GetFileVersion(), Is.EqualTo(8));
}
public void GetFileVersion_DataHasVersion_CorrectVersion()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlVersion1);
var migrator = new FileMigrator(7, e.TestFilePath);
migrator.AddVersionStrategy(new XPathVersion(1, "/configuration/@version"));
Assert.AreEqual(1, migrator.GetFileVersion(e.TestFilePath));
}
}
public void GetFileVersion_FileHasNoVersionUsingDefaultStrategy_ReturnsZero()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlNoVersion);
var migrator = new FileMigrator(1, e.TestFilePath);
migrator.AddVersionStrategy(new XPathVersion(1, "/configuration/@version"));
migrator.AddVersionStrategy(new DefaultVersion(0, 0));
Assert.AreEqual(0, migrator.GetFileVersion(e.TestFilePath));
}
}
public void GetFileVersion_FileHasNoVersionAndNoDefaultStrategy_Throws()
{
using (var e = new EnvironmentForTest())
{
e.WriteTestFile(EnvironmentForTest.XmlNoVersion);
var migrator = new FileMigrator(1, e.TestFilePath);
migrator.AddVersionStrategy(new XPathVersion(1, "/configuration/@version"));
Assert.Throws <ApplicationException>(
() => migrator.GetFileVersion(e.TestFilePath)
);
}
}