To find a string from a list is not working as expected using contains

Question

I have a list which is defined as below:

def list1=["Test1","Test2","Test3"]
String str="Test2"

println("Found The String is:"+list1.contains(str));

//It is returning false even though there is a matching string.

Answer 1

What you've typed in there does work, so there's something else wrong. My guess is that you've done something like:

String part = "Test"
String str="Test2"
def list1=["${part}1","${part}2","Test3"]
def found = list1.contains(str)

in this case, found will be false... because:

"${'test'}" is not equal to "test", for some definitions of equal... even though printing them both makes you think so.

Here's why: Groovy different results on using equals() and == on a GStringImpl