Merge pull request #891 from PhilippeR26/cairo240-string

Cairo 2.4.0 new types : bytes31 & ByteArray

Author: tabaktoni

__mocks__/cairo/cairo240/string.cairo

@@ -0,0 +1,39 @@
+//Cairo 2.5.0
+
+#[starknet::interface]
+trait ITestReject<TContractState> {
+    fn proceed_bytes31(self: @TContractState, str: bytes31) -> bytes31;
+    fn get_string(self: @TContractState) -> ByteArray;
+    fn proceed_string(self: @TContractState, mess: ByteArray) -> ByteArray;
+}
+
+#[starknet::contract]
+mod MyTestReject {
+    use core::option::OptionTrait;
+    use core::traits::TryInto;
+    use core::bytes_31::Bytes31Trait;
+    use core::byte_array::ByteArrayTrait;
+    #[storage]
+    struct Storage {}
+    // To be tested with special characters (!@#$%^&*_+{}|:";./,\[];'<>?~`)
+    #[abi(embed_v0)]
+    impl TestReject of super::ITestReject<ContractState> {
+        fn proceed_bytes31(self: @ContractState, str: bytes31) -> bytes31 {
+            let mut mess: ByteArray = "Cairo has become the most popular language for developers!@#$%^&*_+|:'<>?~`";
+            mess.append_byte(55_u8);
+            str
+        }
+
+        fn get_string(self: @ContractState) -> ByteArray {
+            let mess: ByteArray = "Cairo has become the most popular language for developers" + " + charizards !@#$%^&*_+|:'<>?~`";
+            mess
+        }
+
+        fn proceed_string(self: @ContractState, mess: ByteArray) -> ByteArray {
+            let mut res = mess;
+            let add: ByteArray = " Zorg is back";
+            res.append(@add);
+            res
+        }
+    }
+}