public void Expression_Method()
{
IOperator op = sql.Op(() => SqlExp.Exists(sql.RawQuery("Subquery")));
QueryResult result = engine.Compile(op);
Assert.Equal("EXISTS (Subquery)", result.Sql);
Assert.Equal(new Dictionary <string, object>(), result.Parameters);
}
public void Expression_Method_Invalid_Call()
{
Exception ex = Assert.Throws <InvalidOperationException>(() => SqlExp.Exists(sql.RawQuery("Subquery")));
Assert.Equal("Only for expressions.", ex.Message);
}