test(escrow): add unclaimed bounty expiration refund and minimum deposit specs

tests/wave13_bounty_expiration_refund_test.rs

@@ -0,0 +1,29 @@
+#![no_std]
+#[cfg(test)]
+mod test {
+    extern crate std;
+
+    #[test]
+    fn test_wave13_unclaimed_bounty_expiration_refund_bounds() {
+        let deposit_time: u64 = 1_700_000_000;
+        let expiration_window: u64 = 86_400 * 90; // 90 days
+        let expiry_timestamp = deposit_time + expiration_window;
+
+        let check_time_before = deposit_time + 86_400 * 60;
+        let check_time_after = deposit_time + 86_400 * 95;
+
+        let can_refund_before = check_time_before >= expiry_timestamp;
+        let can_refund_after = check_time_after >= expiry_timestamp;
+
+        assert!(!can_refund_before, "depositor cannot claim expiry refund prior to 90d window");
+        assert!(can_refund_after, "depositor must be entitled to 100% refund after expiration timestamp");
+    }
+
+    #[test]
+    fn test_wave13_min_bounty_funding_threshold() {
+        let min_deposit_amount: u128 = 10_000_0000; // 100 tokens min
+        let deposit_attempt: u128 = 150_000_0000;
+
+        assert!(deposit_attempt >= min_deposit_amount, "bounty deposit must satisfy protocol minimum");
+    }
+}