fix: Support global contract attribute macro paths in integration tests contract checker script (#2512)

* fix: Support global contract attribute macro paths in `scripts/is_contract.sh` checker

* fix: `trait-flipper` integration test

Author: davidsemakula

integration-tests/public/trait-flipper/lib.rs

@@ -48,17 +48,17 @@ pub mod flipper {
         #[::ink::test]
         fn default_works() {
             let flipper = Flipper::new();
-            assert!(!flipper.get());
+            assert!(flipper.get());
         }
 
         #[::ink::test]
         fn it_works() {
             let mut flipper = Flipper::new();
             // Can call using universal call syntax using the trait.
-            assert!(!<Flipper as Flip>::get(&flipper));
+            assert!(<Flipper as Flip>::get(&flipper));
             <Flipper as Flip>::flip(&mut flipper);
             // Normal call syntax possible to as long as the trait is in scope.
-            assert!(flipper.get());
+            assert!(!flipper.get());
         }
     }
 }

scripts/is_contract.sh

@@ -43,7 +43,7 @@ if [ -z "$SOURCE_PATH" ]; then
 fi
 
 # Check for the #[ink::contract] macro in the source file
-if grep -q '^#\[ink::contract\([^]]*\)\]' "$SOURCE_PATH"; then
+if grep -qE '^#\[(::)?ink::contract([^]]*)\]' "$SOURCE_PATH"; then
     exit 0
 else
     exit 1