From e3a08c9b60f363708ff9d3d713cd70f290252fc2 Mon Sep 17 00:00:00 2001
From: Jennifer Chukwu <jnyfaah@gmail.com>
Date: Thu, 2 May 2024 10:16:45 +0000
Subject: [PATCH] test with a fixed input

---
 tests/core/matrix.rs | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/tests/core/matrix.rs b/tests/core/matrix.rs
index 62b2efb8..757fef98 100644
--- 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, prop_assert_eq};
+    use proptest::{prop_assert, proptest};
 
     proptest! {
         #[test]
@@ -970,14 +970,6 @@ 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() {
@@ -1271,6 +1263,20 @@ fn column_iterator_double_ended_mut() {
     assert_eq!(col_iter_mut.next(), None);
 }
 
+#[test]
+fn test_inversion_failure_leaves_matrix_unchanged() {
+    let mut mat = na::Matrix4::new(
+        1.0, 2.0, 3.0, 4.0,
+        2.0, 4.0, 6.0, 8.0,
+        3.0, 6.0, 9.0, 12.0,
+        4.0, 8.0, 12.0, 16.0
+    );
+    let expected = mat.clone();
+    if !mat.try_inverse_mut() {
+        assert_eq!(mat, expected);
+    }
+}
+
 #[test]
 #[cfg(feature = "rayon")]
 fn parallel_column_iteration() {