Remotion.Linq.SqlBackend.SqlPreparation.MethodCallTransformers.TrimMethodCallTransformer.Transform C# (CSharp) Method

    public Expression Transform (MethodCallExpression methodCallExpression)
    {
      ArgumentUtility.CheckNotNull ("methodCallExpression", methodCallExpression);

      MethodCallTransformerUtility.CheckArgumentCount (methodCallExpression, 0);
      MethodCallTransformerUtility.CheckInstanceMethod (methodCallExpression);

      return new SqlFunctionExpression (methodCallExpression.Type, "LTRIM", 
        new SqlFunctionExpression (methodCallExpression.Type, "RTRIM", methodCallExpression.Object));
    }
  }

    public void Transform ()
    {
      var method = typeof (string).GetMethod ("Trim", new Type[] { });
      var objectExpression = Expression.Constant ("Test");
      var expression = Expression.Call (objectExpression, method);
      var transformer = new TrimMethodCallTransformer ();
      
      var result = transformer.Transform (expression);

      var expectedResult = new SqlFunctionExpression(typeof(string), "LTRIM", new SqlFunctionExpression (typeof (string), "RTRIM", objectExpression));

      SqlExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
    }