Added unit tests to the app module

src/utils.rs

@@ -40,3 +40,32 @@ pub fn strip_non_alphanumeric_characters(input: &str) -> String {
     .replace_all(&input.to_lowercase(), "")
     .to_string()
 }
+
+#[cfg(test)]
+mod tests {
+  use pretty_assertions::assert_eq;
+
+  use crate::utils::{convert_runtime, convert_to_gb, strip_non_alphanumeric_characters};
+
+  #[test]
+  fn test_convert_to_gb() {
+    assert_eq!(convert_to_gb(2147483648), 2f64);
+    assert_eq!(convert_to_gb(2662879723), 2.4799999995157123);
+  }
+
+  #[test]
+  fn test_convert_runtime() {
+    let (hours, minutes) = convert_runtime(154);
+
+    assert_eq!(hours, 2);
+    assert_eq!(minutes, 34);
+  }
+
+  #[test]
+  fn test_strop_non_alphanumeric_characters() {
+    assert_eq!(
+      strip_non_alphanumeric_characters("Te$t S7r!ng::'~-_}"),
+      String::from("tet s7rng")
+    )
+  }
+}