add tests

dimforge · Apr 30, 2024 · 825d078 · 825d078
1 parent 5e87799
commit 825d078
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/tests/core/matrix.rs b/tests/core/matrix.rs
@@ -931,7 +931,7 @@ mod inversion_tests {
     use super::*;
     use crate::proptest::*;
     use na::Matrix1;
-    use proptest::{prop_assert, proptest};
+    use proptest::{prop_assert, proptest, prop_assert_eq};
 
     proptest! {
         #[test]
@@ -970,6 +970,14 @@ mod inversion_tests {
             }
         }
 
+        #[test]
+        fn test_inversion_failure_leaves_matrix_unchanged(m in matrix4()) {
+                let original_matrix = m.clone();
+                if m.try_inverse().is_none() {
+                    prop_assert_eq!(m, original_matrix);
+                }
+        }
+
         #[test]
         fn self_mul_inv_is_id_dim6(m in matrix6()) {
             if let Some(im) = m.try_inverse() {