Исправить чтение state в shine_payments и описать e2e тест

shine-solana/shine/programs/shine_payments/src/lib.rs

@@ -250,11 +250,16 @@ impl<'a> Reader<'a> {
 }
 
 trait StateCodec: Sized {
+    fn encoded_len() -> usize;
     fn encode(&self) -> Vec<u8>;
     fn decode(data: &[u8]) -> Result<Self, ProgramError>;
 }
 
 impl StateCodec for ConfigState {
+    fn encoded_len() -> usize {
+        1 + 32 + 32
+    }
+
     fn encode(&self) -> Vec<u8> {
         let mut out = Vec::with_capacity(65);
         out.push(self.version);
@@ -274,6 +279,10 @@ impl StateCodec for ConfigState {
 }
 
 impl StateCodec for CoefLimitState {
+    fn encoded_len() -> usize {
+        1 + 8 + 8 + 8
+    }
+
     fn encode(&self) -> Vec<u8> {
         let mut out = Vec::with_capacity(25);
         out.push(self.version);
@@ -295,6 +304,10 @@ impl StateCodec for CoefLimitState {
 }
 
 impl StateCodec for QueuesState {
+    fn encoded_len() -> usize {
+        1 + 12 * 8
+    }
+
     fn encode(&self) -> Vec<u8> {
         let mut out = Vec::with_capacity(97);
         out.push(self.version);
@@ -339,6 +352,10 @@ impl StateCodec for QueuesState {
 }
 
 impl StateCodec for TicketState {
+    fn encoded_len() -> usize {
+        1 + 1 + 8 + 1 + 32 + 8 + 8
+    }
+
     fn encode(&self) -> Vec<u8> {
         let mut out = Vec::with_capacity(59);
         out.push(self.version);
@@ -370,6 +387,10 @@ impl StateCodec for TicketState {
 }
 
 impl StateCodec for ManagerAllowanceState {
+    fn encoded_len() -> usize {
+        1 + 32 + 8 + 8 + 8
+    }
+
     fn encode(&self) -> Vec<u8> {
         let mut out = Vec::with_capacity(57);
         out.push(self.version);
@@ -393,6 +414,10 @@ impl StateCodec for ManagerAllowanceState {
 }
 
 impl StateCodec for VaultState {
+    fn encoded_len() -> usize {
+        1
+    }
+
     fn encode(&self) -> Vec<u8> {
         vec![self.version]
     }
@@ -1162,9 +1187,9 @@ fn read_state<T: StateCodec>(pda: &AccountInfo) -> Result<T, ProgramError> {
     require!(!is_uninitialized_account(pda), PaymentsError::EmptyState);
     require_keys_eq!(*pda.owner, id(), PaymentsError::InvalidPdaAddress);
     let data = pda.try_borrow_data()?;
-    let used_len = data.iter().rposition(|b| *b != 0).map(|idx| idx + 1).unwrap_or(0);
-    require!(used_len > 0, PaymentsError::EmptyState);
-    T::decode(&data[..used_len])
+    let encoded_len = T::encoded_len();
+    require!(data.len() >= encoded_len, PaymentsError::InvalidAccountData);
+    T::decode(&data[..encoded_len])
 }
 
 fn is_uninitialized_account(account: &AccountInfo) -> bool {