public void CreateUndo_NewAndOldMustBeRev()
{
var info = new ConfigurationChangeInfo
{
New = "a",
Old = "b"
};
var ud = ConfigurationChangeInfoExtensions.CreateUndo(info);
Assert.AreEqual("a", ud.Old);
Assert.AreEqual("b", ud.New);
}
public void Undo_ValueMustSet()
{
var builder = new ConfigurationBuilder();
builder.AddInMemoryCollection();
var root = builder.BuildSavable();
var info = new ConfigurationChangeInfo
{
Key = "hello",
New = "a",
Old = "b",
Provider = root.Providers.First()
};
ConfigurationChangeInfoExtensions.Undo(info);
var val = root["hello"];
Assert.AreEqual("b", val);
}
public void GivenNullInit_MustThrowException()
{
Assert.ThrowsException <ArgumentNullException>(() => ConfigurationChangeInfoExtensions.CreateUndo(null));
Assert.ThrowsException <ArgumentNullException>(() => ConfigurationChangeInfoExtensions.Undo(null));
}