diff --git a/src/mock.rs b/src/mock.rs
index f5379c5..adc6074 100644
--- a/src/mock.rs
+++ b/src/mock.rs
@@ -7,8 +7,13 @@ pub mod image {
     pub fn chequers_1() -> Image {
         Image {
             pixels: vec![
-                1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1,
-                0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0,
+                1, 0, 1, 0, 1, 0, 1, 0,
+                0, 1, 0, 1, 0, 1, 0, 1,
+                1, 0, 1, 0, 1, 0, 1, 0,
+                0, 1, 0, 1, 0, 1, 0, 1,
+                1, 0, 1, 0, 1, 0, 1, 0,
+                0, 1, 0, 1, 0, 1, 0, 1,
+                1, 0, 1, 0, 1, 0, 1, 0,
                 0, 1, 0, 1, 0, 1, 0, 1,
             ],
         }
@@ -17,8 +22,13 @@ pub mod image {
     pub fn chequers_2() -> Image {
         Image {
             pixels: vec![
-                0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0,
-                1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1,
+                0, 1, 0, 1, 0, 1, 0, 1,
+                1, 0, 1, 0, 1, 0, 1, 0,
+                0, 1, 0, 1, 0, 1, 0, 1,
+                1, 0, 1, 0, 1, 0, 1, 0,
+                0, 1, 0, 1, 0, 1, 0, 1,
+                1, 0, 1, 0, 1, 0, 1, 0,
+                0, 1, 0, 1, 0, 1, 0, 1,
                 1, 0, 1, 0, 1, 0, 1, 0,
             ],
         }