From e3d898865836d9d1b28e270e862277256d66df0c Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Fri, 30 Jul 2021 21:33:43 -0700
Subject: [PATCH] matrices: moving another doctest to unit

---
 rtchallenge/src/matrices.rs | 39 ++++++++++++-------------------------
 1 file changed, 12 insertions(+), 27 deletions(-)

diff --git a/rtchallenge/src/matrices.rs b/rtchallenge/src/matrices.rs
index ecd5492..b74ecc9 100644
--- a/rtchallenge/src/matrices.rs
+++ b/rtchallenge/src/matrices.rs
@@ -446,17 +446,6 @@ impl Mul<Matrix4x4> for Matrix4x4 {
     type Output = Matrix4x4;
 
     /// Implement matrix multiplication for `Matrix4x4`.
-    ///
-    /// # Examples
-    /// ```
-    /// use rtchallenge::matrices::Matrix4x4;
-    ///
-    /// let i = Matrix4x4::identity();
-    /// let m1 = Matrix4x4::identity();
-    /// let m2 = Matrix4x4::identity();
-    ///
-    /// assert_eq!(m1 * m2, i);
-    /// ```
     fn mul(self, m2: Matrix4x4) -> Matrix4x4 {
         let m1 = self;
         let mut r: Matrix4x4 = Default::default();
@@ -476,22 +465,6 @@ impl Mul<Tuple> for Matrix4x4 {
     type Output = Tuple;
 
     /// Implement matrix multiplication for `Matrix4x4` * `Tuple`.
-    ///
-    /// # Examples
-    /// ```
-    /// use rtchallenge::matrices::Matrix4x4;
-    /// use rtchallenge::tuples::Tuple;
-    ///
-    /// let a = Matrix4x4::new(
-    ///     [1., 2., 3., 4.],
-    ///     [2., 4., 4., 2.],
-    ///     [8., 6., 4., 1.],
-    ///     [0., 0., 0., 1.],
-    /// );
-    /// let b = Tuple::new(1., 2., 3., 1.);
-    ///
-    /// assert_eq!(a * b, Tuple::new(18., 24., 33., 1.));
-    /// ```
     fn mul(self, t: Tuple) -> Tuple {
         let m = self;
         Tuple {
@@ -938,4 +911,16 @@ mod tests {
             )
         );
     }
+    #[test]
+    fn mul4x4_tuple() {
+        let a = Matrix4x4::new(
+            [1., 2., 3., 4.],
+            [2., 4., 4., 2.],
+            [8., 6., 4., 1.],
+            [0., 0., 0., 1.],
+        );
+        let b = Tuple::new(1., 2., 3., 1.);
+
+        assert_eq!(a * b, Tuple::new(18., 24., 33., 1.));
+    }
 }