remove some unnecessary imports and call them inline

src/image.rs

@@ -1,5 +1,3 @@
-use crate::mock;
-
 #[derive(Debug, Eq, PartialEq)]
 pub struct Image {
     pub pixels: Vec<u32>, // 64 for SD, 256 for HD
@@ -61,7 +59,7 @@ fn test_image_from_string() {
 
 #[test]
 fn test_image_to_string() {
-    let output = mock::image::chequers_1().to_string();
+    let output = crate::mock::image::chequers_1().to_string();
     let expected = include_str!("test-resources/image-chequers-1").to_string();
     assert_eq!(output, expected);
 }

src/item.rs

@@ -1,4 +1,4 @@
-use crate::{AnimationFrames, Image, mock, from_base36, ToBase36, optional_data_line};
+use crate::{AnimationFrames, Image, from_base36, ToBase36, optional_data_line};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Item {
@@ -75,13 +75,13 @@ impl ToString for Item {
 #[test]
 fn test_item_from_string() {
     let output = Item::from(include_str!("test-resources/item").to_string());
-    let expected = mock::item();
+    let expected = crate::mock::item();
     assert_eq!(output, expected);
 }
 
 #[test]
 fn test_item_to_string() {
-    let output = mock::item().to_string();
+    let output = crate::mock::item().to_string();
     let expected = include_str!("test-resources/item").to_string();
     assert_eq!(output, expected);
 }

src/room.rs

@@ -1,4 +1,4 @@
-use crate::{Exit, ExitInstance, Instance, mock, Position, from_base36, ToBase36, optional_data_line};
+use crate::{Exit, ExitInstance, Instance, Position, from_base36, ToBase36, optional_data_line};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Room {
@@ -88,7 +88,7 @@ impl From<String> for Room {
 fn test_room_from_string() {
     assert_eq!(
         Room::from(include_str!("test-resources/room").to_string()),
-        mock::room()
+        crate::mock::room()
     );
 }
 
@@ -146,5 +146,5 @@ impl ToString for Room {
 
 #[test]
 fn test_room_to_string() {
-    assert_eq!(mock::room().to_string(), include_str!("test-resources/room").to_string());
+    assert_eq!(crate::mock::room().to_string(), include_str!("test-resources/room").to_string());
 }

src/sprite.rs

@@ -1,4 +1,4 @@
-use crate::{AnimationFrames, Image, Position, mock, from_base36, ToBase36, optional_data_line};
+use crate::{AnimationFrames, Image, Position, from_base36, ToBase36, optional_data_line};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Sprite {
@@ -101,12 +101,15 @@ fn test_sprite_from_string() {
         include_str!("test-resources/sprite").to_string()
     );
 
-    let expected = mock::sprite();
+    let expected = crate::mock::sprite();
 
     assert_eq!(output, expected);
 }
 
 #[test]
 fn test_sprite_to_string() {
-    assert_eq!(mock::sprite().to_string(), include_str!("test-resources/sprite").to_string());
+    assert_eq!(
+        crate::mock::sprite().to_string(),
+        include_str!("test-resources/sprite").to_string()
+    );
 }

src/tile.rs

@@ -1,6 +1,4 @@
-use crate::{AnimationFrames, from_base36, ToBase36, optional_data_line};
-use crate::image::Image;
-use crate::mock;
+use crate::{AnimationFrames, Image, from_base36, ToBase36, optional_data_line};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Tile {
@@ -109,8 +107,8 @@ fn test_tile_to_string() {
         name: Some("chequers".to_string()),
         wall: None,
         animation_frames: vec![
-            mock::image::chequers_1(),
-            mock::image::chequers_2(),
+            crate::mock::image::chequers_1(),
+            crate::mock::image::chequers_2(),
         ],
         colour_id: None
     }.to_string();