src/render.rs

@@ -420,11 +420,23 @@ pub fn render_perspective_to_path(
 mod tests {
     use super::*;
     use crate::colormap::{HIGHLAND_COLOR, LOWLAND_COLOR, SNOW_COLOR, WATER_COLOR};
+    use crate::scene::{Hydrology, Scene};
 
     fn fixture_scene() -> Scene {
         Scene::default()
     }
 
+    fn dry_scene() -> Scene {
+        Scene {
+            hydrology: Hydrology {
+                lake_radius: 0.0,
+                river_width: 0.0,
+                ..Hydrology::default()
+            },
+            ..Scene::default()
+        }
+    }
+
     #[test]
     fn render_matches_grid_dimensions() {
         let grid = HeightGrid::plane(8, 5).unwrap();
@@ -484,17 +496,17 @@ mod tests {
     #[test]
     fn render_center_of_hill_is_snow() {
         let grid = HeightGrid::radial_hill(5, 5, 10.0).unwrap();
-        let img = render_top_down(&grid, &fixture_scene());
+        let img = render_top_down(&grid, &dry_scene());
         assert_eq!(img.get_pixel(2, 2).0, SNOW_COLOR);
     }
 
     #[test]
     fn render_top_down_applies_vertical_exaggeration() {
         let grid = HeightGrid::new(1, 1, vec![3.0]).unwrap();
-        let low_scene = fixture_scene();
+        let low_scene = dry_scene();
         let high_scene = Scene {
             vertical_exaggeration: 2.0,
-            ..fixture_scene()
+            ..dry_scene()
         };
 
         let low_img = render_top_down(&grid, &low_scene);