add utils tests

src/core/utils/visualizer.rs

@@ -40,7 +40,7 @@ use std::{
 /// // create a visualizer and use it to visualize the output of the generator
 /// let path = "output.png";
 /// # let tmp_dir = TempDir::new("libnoise").unwrap();
-/// # let mut path = &tmp_dir.path().join(path).into_os_string().into_string().unwrap();
+/// # let path = &tmp_dir.path().join(path).into_os_string().into_string().unwrap();
 /// Visualizer::<3>::new([30, 20, 25], &generator).write_to_file(path);
 /// ```
 ///
@@ -59,7 +59,7 @@ use std::{
 /// // create a visualizer and use it to visualize the output of the generator
 /// let path = "output.png";
 /// # let tmp_dir = TempDir::new("libnoise").unwrap();
-/// # let mut path = &tmp_dir.path().join(path).into_os_string().into_string().unwrap();
+/// # let path = &tmp_dir.path().join(path).into_os_string().into_string().unwrap();
 /// Visualizer::from(buf).write_to_file(path);
 /// ```
 pub struct Visualizer<const D: usize> {

tests/test_utils.rs

@@ -0,0 +1,76 @@
+use libnoise::prelude::*;
+use proptest::prelude::*;
+use tempdir::TempDir;
+
+macro_rules! strategy_float_numeric {
+    () => {
+        prop::num::f64::NORMAL
+            | prop::num::f64::NEGATIVE
+            | prop::num::f64::POSITIVE
+            | prop::num::f64::ZERO
+    };
+}
+
+proptest! {
+    // =================================================================
+    // test NoiseBuffer
+    // =================================================================
+    #[test]
+    fn test_noises_buffer_1d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        NoiseBuffer::<1>::new([1000], &generator);
+    }
+
+    #[test]
+    fn test_noises_buffer_2d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        NoiseBuffer::<2>::new([100, 100], &generator);
+    }
+
+    #[test]
+    fn test_noises_buffer_3d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        NoiseBuffer::<3>::new([30, 30, 30], &generator);
+    }
+
+    #[test]
+    fn test_noises_buffer_4d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        NoiseBuffer::<4>::new([10, 10, 10, 10], &generator);
+    }
+
+    // =================================================================
+    // test Visualizer
+    // =================================================================
+    #[test]
+    fn test_visualizer_1d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        let tmp_dir = TempDir::new("libnoise").unwrap();
+        let path = &tmp_dir.path().join("output.png").into_os_string().into_string().unwrap();
+        Visualizer::<1>::new([1000], &generator).write_to_file(path);
+    }
+
+    #[test]
+    fn test_visualizer_2d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        let tmp_dir = TempDir::new("libnoise").unwrap();
+        let path = &tmp_dir.path().join("output.png").into_os_string().into_string().unwrap();
+        Visualizer::<2>::new([100, 100], &generator).write_to_file(path);
+    }
+
+    #[test]
+    fn test_visualizer_3d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        let tmp_dir = TempDir::new("libnoise").unwrap();
+        let path = &tmp_dir.path().join("output.png").into_os_string().into_string().unwrap();
+        Visualizer::<3>::new([30, 30, 30], &generator).write_to_file(path);
+    }
+
+    #[test]
+    fn test_visualizer_4d(val in strategy_float_numeric!()) {
+        let generator = Source::constant(val);
+        let tmp_dir = TempDir::new("libnoise").unwrap();
+        let path = &tmp_dir.path().join("output.png").into_os_string().into_string().unwrap();
+        Visualizer::<4>::new([10, 10, 10, 10], &generator).write_to_file(path);
+    }
+}