1 files changed, 31 insertions, 2 deletions

diff --git a/tests/client_core.rs b/tests/client_core.rs
index 3a2fb27..65fd1e6 100644
--- a/tests/client_core.rs
+++ b/tests/client_core.rs
@@ -987,9 +987,10 @@ fn crash_starts_a_round_and_draws_the_multiplier_locally() {
     let mut h = Harness::new();
     h.enter_crash();
 
-    assert_eq!(h.board().len(), 6);
+    assert_eq!(h.board().len(), 7);
     assert!(h.board()[4].contains("Press [SPACE] to start."));
     assert!(h.board()[5].contains("[SPACE] Play"));
+    assert!(h.board()[6].contains("Commit: —"));
 
     h.key(Key::Char(' '));
     assert!(h.sent.iter().any(|line| line == "PLAY_START crash 10"));
@@ -997,7 +998,7 @@ fn crash_starts_a_round_and_draws_the_multiplier_locally() {
     let running = crash_state("running", 1.0, None, 0, 990);
     h.reply(&crash_line("CRASH_START", &running));
 
-    assert_eq!(h.board().len(), 6);
+    assert_eq!(h.board().len(), 7);
     assert!(h.board()[2].contains("Multiplier: 1.00x"));
     assert!(h.board()[3].contains("Potential: 10 Kr"));
     assert!(h.board()[4].contains("Rising"));
@@ -1709,3 +1710,31 @@ fn a_crash_tick_updates_the_board_for_its_own_session() {
     h.push("crash.tick session=other t=1700000000200 m=9.0");
     assert!(h.board()[2].contains("Multiplier: 1.50x"));
 }
+
+#[test]
+fn the_crash_board_verifies_the_revealed_seed() {
+    use zagan_bet::crash::{commit_seed, crash_point_from_seed};
+
+    let mut h = Harness::new();
+    h.enter_crash();
+    h.key(Key::Char(' '));
+    let mut seed = [0u8; 32];
+    seed[..8].copy_from_slice(&(0.67_f64 * 18_446_744_073_709_551_616.0).to_be_bytes());
+    let commit = commit_seed(&seed);
+    let point = crash_point_from_seed(&seed);
+    let hex = seed
+        .iter()
+        .map(|byte| format!("{byte:02x}"))
+        .collect::<String>();
+
+    let mut cashed = crash_state("cashed", 2.0, Some(point), 20, 1010);
+    cashed.commit = Some(commit);
+    cashed.seed = Some(hex);
+    h.reply(&crash_line("CRASH_STATE", &cashed));
+
+    assert!(
+        h.board()[6].contains("verified"),
+        "fairness line: {}",
+        h.board()[6]
+    );
+}