Add regression test

crates/bevy_ecs/src/schedule/schedule.rs

@@ -1570,3 +1570,29 @@ impl ScheduleBuildSettings {
  }
  }
 }
+
+#[cfg(test)]
+mod tests {
+ use crate::{
+ self as bevy_ecs,
+ schedule::{IntoSystemConfigs, IntoSystemSetConfig, Schedule, SystemSet},
+ world::World,
+ };
+
+ #[test]
+ fn ambiguous_with_not_breaking_run_conditions() {
+ #[derive(SystemSet, Debug, Clone, PartialEq, Eq, Hash)]
+ struct Set;
+
+ let mut world = World::new();
+ let mut schedule = Schedule::new();
+
+ schedule.configure_set(Set.run_if(|| false));
+ schedule.add_systems(
+ (|| panic!("This system must not run"))
+ .ambiguous_with(|| ())
+ .in_set(Set),
+ );
+ schedule.run(&mut world);
+ }
+}