public void Match_WithNoCaptureGroup_MatchesAndReplacesExpression()
{
var visitor =
SearchReplaceVisitor
.Create()
.For <Customer>()
.Replace(
x => x.PrimaryPerson.FullName,
x => x.Contacts
.Where(y => y.IsPrimary)
.Select(z => z.FirstName + " " + z.LastName)
.First()
)
.Build();
AssertVisitor <Customer>(visitor,
x => x.PrimaryPerson.FullName,
x => x.Contacts
.Where(y => y.IsPrimary)
.Select(z => z.FirstName + " " + z.LastName)
.First());
AssertVisitor <Company>(visitor,
x => x.Customers.Aggregate(string.Empty, (a, b) => a + "\r\n" + b.PrimaryPerson.FullName),
x => x.Customers.Aggregate(string.Empty,
(a, b) => a + "\r\n" + b.Contacts
.Where(y => y.IsPrimary)
.Select(z => z.FirstName + " " + z.LastName)
.First()));
}
public void AssertVisitor <T>(SearchReplaceVisitor visitor,
Expression <Func <T, object> > searchIn,
Expression <Func <T, object> > expected)
{
var actual = visitor.Visit(searchIn);
Console.WriteLine("SearchIn: {0}\r\nExpected:{1}\r\nActual:{2}", searchIn, expected, actual);
actual.AssertEquals(expected);
}
public void Match_WithNewExpressionAndCaptureGroup_MatchesAndReplacesExpression()
{
var visitor =
SearchReplaceVisitor
.Create()
.For <string>()
.Replace((x, c) => new Guid(c.Group <string>()), (x, c) => Guid.Parse(c.Group <string>()))
.Build();
AssertVisitor <Customer>(visitor,
x => new Guid("93f37cd0-43a1-41e6-b2b8-35d131f39a49"),
x => Guid.Parse("93f37cd0-43a1-41e6-b2b8-35d131f39a49"));
}
public void Match_WithNewArrayExpression_MatchesAndReplacesExpression()
{
var visitor =
SearchReplaceVisitor
.Create()
.For <object>()
.Replace(x => (IEnumerable <int>)(new int[] { 0, 1, 2, 3, 4, 5 }), x => Enumerable.Range(0, 6))
.Build();
AssertVisitor <Customer>(visitor,
x => (IEnumerable <int>)(new int[] { 0, 1, 2, 3, 4, 5 }),
x => Enumerable.Range(0, 6));
}
public void Match_WithBinaryExpression_MatchesAndReplacesExpression()
{
var visitor =
SearchReplaceVisitor
.Create()
.For <int>()
.Replace(x => x * 2, x => x << 1)
.Build();
AssertVisitor <Customer>(visitor,
x => x.GetHashCode() * 2,
x => x.GetHashCode() << 1);
}
public void Match_WithUnaryExpression_MatchesAndReplacesExpression()
{
var visitor =
SearchReplaceVisitor
.Create()
.For <int>()
.Replace(x => ~x, x => x ^ -1) // Unoptimizer!
.Build();
AssertVisitor <Customer>(visitor,
x => ~x.Contacts.Count,
x => x.Contacts.Count ^ -1);
}
public void Match_WithConditionalExpression_MatchesAndReplacesExpression()
{
// ReSharper disable ConvertConditionalTernaryToNullCoalescing
var visitor =
SearchReplaceVisitor
.Create()
.For <string>()
.Replace(x => (x != null ? x : "(nothing)"), x => x ?? "(nothing)")
.Build();
AssertVisitor <Customer>(visitor,
c => (c.PrimaryPerson.FullName != null ? c.PrimaryPerson.FullName : "(nothing)"),
c => c.PrimaryPerson.FullName ?? "(nothing)");
// ReSharper restore ConvertConditionalTernaryToNullCoalescing
}
