public void Empty()
{
SqlExpr e = new SqlExpr();
Assert.That(e.Clone().ToString(), Is.EqualTo(""));
Assert.That(e.GetAllPlaceHolders(), Is.EqualTo(new string[] { }));
Assert.That(e.HasUnplacedHolder("T"), Is.False);
Assert.That(e.HasUnplacedHolders(), Is.False);
Assert.That(e.IsEmpty, Is.True);
Assert.That(e.IsPlaceHolderOnly, Is.False);
e.Place("PH", "a");
Assert.That(e.ToString(), Is.EqualTo(""));
}
public void HasUnplacedHolder()
{
SqlExpr e;
e = new SqlExpr("@PH");
Assert.That(e.HasUnplacedHolder("PH"), Is.True);
e.Place("PH", "'abc'");
Assert.That(e.HasUnplacedHolder("PH"), Is.False);
e = new SqlExpr("@PH1 + @PH2");
e.Place("PH1", "+100");
Assert.That(e.HasUnplacedHolder("PH1"), Is.False);
Assert.That(e.HasUnplacedHolder("PH2"), Is.True);
e.Place("PH2", "-9");
Assert.That(e.HasUnplacedHolder("PH1"), Is.False);
Assert.That(e.HasUnplacedHolder("PH2"), Is.False);
e = new SqlExpr("@PH || @PH");
e.Place("PH", "'abc'");
Assert.That(e.HasUnplacedHolder("PH"), Is.False);
e.Place("PH", "'abc'");
Assert.That(e.HasUnplacedHolder("PH"), Is.False);
}