public void Transform_ArgumentIsNull ()
{
var method = typeof (string).GetMethod ("StartsWith", new[] { typeof (string) });
var objectExpression = Expression.Constant ("Test");
var argument1 = Expression.Constant (null, typeof(string));
var expression = Expression.Call (objectExpression, method, argument1);
var transformer = new StartsWithMethodCallTransformer ();
var result = transformer.Transform (expression);
SqlExpressionTreeComparer.CheckAreEqualTrees (Expression.Constant(false), result);
}
public void Transform_ArgumentIsNotNull ()
{
var method = typeof (string).GetMethod ("StartsWith", new[] { typeof (string) });
var objectExpression = Expression.Constant ("Test");
var argument1 = Expression.Constant ("test");
var expression = Expression.Call (objectExpression, method, argument1);
var transformer = new StartsWithMethodCallTransformer();
var result = transformer.Transform (expression);
var rightExpression = Expression.Constant (string.Format ("{0}%", argument1.Value));
var expectedResult = new SqlLikeExpression (objectExpression, rightExpression, new SqlLiteralExpression (@"\"));
SqlExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
}
public void Transform_ArgumentIsNotNullAndIsNoConstantValue_ ()
{
var method = typeof (string).GetMethod ("StartsWith", new[] { typeof (string) });
var objectExpression = Expression.Constant ("Test");
var argument1 = Expression.MakeMemberAccess (Expression.Constant (new Cook ()), typeof (Cook).GetProperty ("Name"));
var expression = Expression.Call (objectExpression, method, argument1);
var transformer = new StartsWithMethodCallTransformer ();
var result = transformer.Transform (expression);
Expression rightExpression = new SqlFunctionExpression (
typeof (string),
"REPLACE",
new SqlFunctionExpression (
typeof (string),
"REPLACE",
new SqlFunctionExpression (
typeof (string),
"REPLACE",
new SqlFunctionExpression (
typeof (string),
"REPLACE",
argument1,
new SqlLiteralExpression (@"\"),
new SqlLiteralExpression (@"\\")),
new SqlLiteralExpression (@"%"),
new SqlLiteralExpression (@"\%")),
new SqlLiteralExpression (@"_"),
new SqlLiteralExpression (@"\_")),
new SqlLiteralExpression (@"["),
new SqlLiteralExpression (@"\["));
rightExpression = Expression.Add (
rightExpression, new SqlLiteralExpression ("%"), typeof (string).GetMethod ("Concat", new[] { typeof (string), typeof (string) }));
var expectedResult = new SqlLikeExpression (objectExpression, rightExpression, new SqlLiteralExpression (@"\"));
SqlExpressionTreeComparer.CheckAreEqualTrees (expectedResult, result);
}