Add hover test and tweak dismiss logic

crates/gpui/src/executor.rs

@@ -330,6 +330,11 @@ impl Deterministic {
         Timer::Deterministic(DeterministicTimer { rx, id, state })
     }
 
+    pub fn now(&self) -> std::time::Instant {
+        let state = self.state.lock();
+        state.now.clone()
+    }
+
     pub fn advance_clock(&self, duration: Duration) {
         let new_now = self.state.lock().now + duration;
         loop {
@@ -647,6 +652,14 @@ impl Background {
         }
     }
 
+    pub fn now(&self) -> std::time::Instant {
+        match self {
+            Background::Production { .. } => std::time::Instant::now(),
+            #[cfg(any(test, feature = "test-support"))]
+            Background::Deterministic { executor } => executor.now(),
+        }
+    }
+
     #[cfg(any(test, feature = "test-support"))]
     pub async fn simulate_random_delay(&self) {
         use rand::prelude::*;