add test

test/matrix/test_m_determinant.scad

@@ -0,0 +1,31 @@
+use <matrix/m_determinant.scad>;
+
+module test_m_scaling() {
+    echo("==== test_m_determinant ====");
+
+    assert(
+        m_determinant([
+            [3, 8],
+            [4, 6]
+        ]) == -14
+    );
+
+    assert(
+        m_determinant([
+            [6,  1, 1],
+            [4, -2, 5],
+            [2,  8, 7]
+        ]) == -306
+    );
+
+    assert(
+        m_determinant([
+            [0,  4, 0, -3],
+            [1,  1, 5,  2],
+            [1, -2, 0,  6],
+            [3,  0, 0,  1]
+        ]) == -250
+    );
+}
+
+test_m_determinant();

test/test_all.scad

@@ -99,6 +99,7 @@ include <voxel/test_vx_contour.scad>;
 // Matrix
 include <matrix/test_m_scaling.scad>;
 include <matrix/test_m_translation.scad>;
+include <matrix/test_m_determinant.scad>;
 
 // Voronoi
 include <voronoi/test_vrn2_cells_space.scad>;