fixes issue 276

creator-keys/tests/buy_key.rs

@@ -4,7 +4,7 @@ mod contract_test_env;
 
 use contract_test_env::{
     compute_expected_buy_price, register_creator_keys, register_test_creator,
-    set_key_price_for_tests, test_env_with_auths,
+    set_key_price_for_tests, set_protocol_fee_bps, test_env_with_auths,
 };
 use creator_keys::ContractError;
 use soroban_sdk::{testutils::Address as _, Address};
@@ -15,12 +15,26 @@ fn test_buy_key_unregistered_creator_fails() {
     let (client, _) = register_creator_keys(&env);
     let base_price = 100i128;
     set_key_price_for_tests(&env, &client, base_price);
+    set_protocol_fee_bps(&env, &client, 9000u32, 1000u32);
     let creator = Address::generate(&env);
     let buyer = Address::generate(&env);
 
     let expected_price = compute_expected_buy_price(0, base_price);
+
+    let fee_view_before = client.get_protocol_fee_view();
+    assert_eq!(client.get_total_key_supply(&creator), 0);
+    assert_eq!(client.get_key_balance(&creator, &buyer), 0);
+
     let result = client.try_buy_key(&creator, &buyer, &expected_price);
+
     assert_eq!(result, Err(Ok(ContractError::NotRegistered)));
+    assert_eq!(client.get_total_key_supply(&creator), 0);
+    assert_eq!(client.get_key_balance(&creator, &buyer), 0);
+
+    let fee_view_after = client.get_protocol_fee_view();
+    assert_eq!(fee_view_after.creator_bps, fee_view_before.creator_bps);
+    assert_eq!(fee_view_after.protocol_bps, fee_view_before.protocol_bps);
+    assert_eq!(fee_view_after.is_configured, fee_view_before.is_configured);
 }
 
 #[test]

creator-keys/tests/contract_test_env/mod.rs

@@ -15,6 +15,7 @@ use soroban_sdk::{
     testutils::{Address as _, Ledger},
     Address, Env, String,
 };
+use std::string::String as StdString;
 
 /// Stable timestamp used by integration tests unless a test needs to override it.
 pub const DEFAULT_TEST_TIMESTAMP: u64 = 1_700_000_000;
@@ -43,6 +44,16 @@ pub fn test_env_with_auths() -> Env {
     env
 }
 
+/// Return a deterministic test wallet address for a seed string.
+pub fn test_wallet_address(env: &Env, seed: &str) -> Address {
+    Address::from_string(&String::from_str(env, &account_strkey_from_seed(seed)))
+}
+
+/// Return a deterministic test wallet address for an index.
+pub fn test_wallet_address_from_index(env: &Env, index: u32) -> Address {
+    test_wallet_address(env, &std::format!("wallet-{index}"))
+}
+
 /// Register [`CreatorKeysContract`] and return a client and the contract id.
 pub fn register_creator_keys<'a>(env: &'a Env) -> (CreatorKeysContractClient<'a>, Address) {
     let id = env.register(CreatorKeysContract, ());
@@ -132,6 +143,81 @@ pub fn set_stored_key_price(env: &Env, contract_id: &Address, price: i128) {
     });
 }
 
+fn account_strkey_from_seed(seed: &str) -> StdString {
+    let mut payload = [0u8; 32];
+    let mut state = 0xcbf2_9ce4_8422_2325u64;
+
+    for byte in seed.as_bytes() {
+        state ^= u64::from(*byte);
+        state = state.wrapping_mul(0x0000_0100_0000_01b3);
+    }
+
+    for chunk in payload.chunks_mut(8) {
+        state ^= state >> 33;
+        state = state.wrapping_mul(0xff51_afd7_ed55_8ccd);
+        state ^= state >> 33;
+        state = state.wrapping_mul(0xc4ce_b9fe_1a85_ec53);
+        state ^= state >> 33;
+        chunk.copy_from_slice(&state.to_be_bytes());
+    }
+
+    let mut raw = [0u8; 35];
+    raw[0] = 6 << 3;
+    raw[1..33].copy_from_slice(&payload);
+    let checksum = crc16_xmodem(&raw[..33]).to_le_bytes();
+    raw[33..].copy_from_slice(&checksum);
+
+    base32_encode(&raw)
+}
+
+fn crc16_xmodem(bytes: &[u8]) -> u16 {
+    let mut crc = 0u16;
+
+    for byte in bytes {
+        crc ^= u16::from(*byte) << 8;
+        for _ in 0..8 {
+            if crc & 0x8000 != 0 {
+                crc = (crc << 1) ^ 0x1021;
+            } else {
+                crc <<= 1;
+            }
+        }
+    }
+
+    crc
+}
+
+fn base32_encode(bytes: &[u8]) -> StdString {
+    const ALPHABET: &[u8; 32] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
+
+    let mut encoded = StdString::new();
+    let mut buffer = 0u16;
+    let mut bits = 0u8;
+
+    for byte in bytes {
+        buffer = (buffer << 8) | u16::from(*byte);
+        bits += 8;
+
+        while bits >= 5 {
+            bits -= 5;
+            let index = ((buffer >> bits) & 0x1f) as usize;
+            encoded.push(ALPHABET[index] as char);
+        }
+
+        if bits > 0 {
+            buffer &= (1 << bits) - 1;
+        } else {
+            buffer = 0;
+        }
+    }
+
+    if bits > 0 {
+        let index = ((buffer << (5 - bits)) & 0x1f) as usize;
+        encoded.push(ALPHABET[index] as char);
+    }
+
+    encoded
+}
 /// Computes the expected buy price for a given supply value.
 ///
 /// Current bonding curve formula:

creator-keys/tests/supply_invariants.rs

@@ -10,6 +10,7 @@ mod contract_test_env;
 
 use contract_test_env::{
     register_creator_keys, register_test_creator, set_key_price_for_tests, test_env_with_auths,
+    test_wallet_address, test_wallet_address_from_index,
 };
 use creator_keys::CreatorKeysContractClient;
 use soroban_sdk::{testutils::Address as _, Address, Env};
@@ -23,6 +24,30 @@ fn setup<'a>(env: &'a Env, price: i128) -> (CreatorKeysContractClient<'a>, Addre
 
 // ── Supply conservation: buy then sell returns to prior state ───────────���─
 
+#[test]
+fn test_wallet_address_returns_same_address_for_same_seed() {
+    let env = test_env_with_auths();
+
+    assert_eq!(
+        test_wallet_address(&env, "same-seed"),
+        test_wallet_address(&env, "same-seed")
+    );
+}
+
+#[test]
+fn test_wallet_address_returns_distinct_addresses_for_distinct_inputs() {
+    let env = test_env_with_auths();
+
+    assert_ne!(
+        test_wallet_address_from_index(&env, 1),
+        test_wallet_address_from_index(&env, 2)
+    );
+    assert_ne!(
+        test_wallet_address(&env, "seed-a"),
+        test_wallet_address(&env, "seed-b")
+    );
+}
+
 #[test]
 fn test_supply_buy_then_sell_returns_to_zero() {
     let env = test_env_with_auths();
@@ -73,9 +98,9 @@ fn test_supply_three_buyers_sum_equals_total() {
     let env = test_env_with_auths();
     let (client, creator) = setup(&env, 100);
 
-    let b1 = Address::generate(&env);
-    let b2 = Address::generate(&env);
-    let b3 = Address::generate(&env);
+    let b1 = test_wallet_address_from_index(&env, 1);
+    let b2 = test_wallet_address_from_index(&env, 2);
+    let b3 = test_wallet_address_from_index(&env, 3);
 
     client.buy_key(&creator, &b1, &100);
     client.buy_key(&creator, &b2, &100);