Fix the regex matche issue and create a unit tests for the search_for utilty function

.idea/cmus-notify.iml

@@ -3,6 +3,7 @@
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />

.idea/dbnavigator.xml

@@ -2,7 +2,7 @@
 <project version="4">
   <component name="DBNavigator.Project.DataEditorManager">
     <record-view-column-sorting-type value="BY_INDEX" />
-    <value-preview-text-wrapping value="true" />
+    <value-preview-text-wrapping value="false" />
     <value-preview-pinned value="false" />
   </component>
   <component name="DBNavigator.Project.DatabaseEditorStateManager">
@@ -11,6 +11,9 @@
   <component name="DBNavigator.Project.DatabaseFileManager">
     <open-files />
   </component>
+  <component name="DBNavigator.Project.ExecutionManager">
+    <retain-sticky-names value="false" />
+  </component>
   <component name="DBNavigator.Project.Settings">
     <connections />
     <browser-settings>

Cargo.lock

@@ -208,6 +208,7 @@ dependencies = [
  "clap",
  "lrc",
  "notify-rust",
+ "regex",
  "test-context",
  "typed-builder",
 ]

Cargo.toml

@@ -8,6 +8,7 @@ edition = "2021"
 [dependencies]
 lrc = { version = "0.1.7", optional = true }
 notify-rust = { version = "4.7.0", features = ["images"] }
+regex = "1.7.1"
 typed-builder = "0.12.0"
 
 [dependencies.clap]

src/utils.rs

@@ -7,16 +7,17 @@ use std::path::Path;
 pub fn search_for(
     search_directory: &str,
     max_depth: u8,
-    regx: &[&str],
-) -> std::io::Result<Option<String>> {
+    regx: &str,
+) -> Result<Option<String>, String> {
     // Search in the track directory.
-    for entry in std::fs::read_dir(search_directory)? {
+    for entry in std::fs::read_dir(search_directory).map_err(|e| e.to_string())? {
         let Ok(entry) = entry else { continue; };
         let Ok(file_type) = entry.file_type() else { continue; };
         if file_type.is_file() {
             let Ok(file_name) = entry.file_name().into_string() else { continue; };
-            // Check if the file name matches any of the regular expressions.
-            if regx.iter().any(|&regx| file_name.contains(regx)) {
+            // Check if the file name matches the regular expression.
+            let matcher = regex::Regex::new(regx).map_err(|e| e.to_string())?;
+            if matcher.is_match(&file_name) {
                 let path = entry.path();
                 let Some(path) = path.to_str() else { continue; };
                 return Ok(Some(path.to_string()));
@@ -64,6 +65,7 @@ pub fn process_template_placeholders(template: &String, track: &cmus::Track) ->
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::assert_matches::assert_matches;
     use std::str::FromStr;
     use test_context::{test_context, TestContext};
 
@@ -93,4 +95,30 @@ mod tests {
             "Photograph/Alex Goot/Alex Goot & Friends, Vol. 3/8"
         );
     }
+
+    #[test]
+    fn test_search_for_cover_with_the_cover_key_world() {
+        let cover_path = search_for(
+            "tests/samples/Owl City/Cinematic",
+            1,
+            r"cover|.\.jpg|.\.png",
+        );
+
+        assert_matches!(cover_path, Ok(Some(_)));
+        assert_eq!(
+            cover_path.unwrap().unwrap(),
+            "tests/samples/Owl City/Cinematic/cover.jpg"
+        );
+    }
+
+    #[test]
+    fn test_search_for_cover_without_the_cover_key_world() {
+        let cover_path = search_for("tests/samples/Owl City/Cinematic", 1, r".\.jpg|.\.png");
+
+        assert_matches!(cover_path, Ok(Some(_)));
+        assert_eq!(
+            cover_path.unwrap().unwrap(),
+            "tests/samples/Owl City/Cinematic/cover.jpg"
+        );
+    }
 }

tests/samples/Owl City/Cinematic/08 - Always.lrc

@@ -0,0 +1,55 @@
+[00:24.28]When the road is long
+[00:27.65]And your strength is gone
+[00:30.64]Remember I am just a prayer away
+[00:37.27]When the way is hard
+[00:40.39]And you are faint of heart
+[00:43.79]Remember I am just a prayer away
+[00:50.42]
+[00:50.42]Hold fast, I'll guide you through the night
+[00:56.41]And fear not for I am by your side
+[01:03.25]
+[01:03.25]Listen through the rain
+[01:06.57]And you can hear the angels say
+[01:09.53]Help is on the way
+[01:13.02]The moment you begin to pray
+[01:16.13]When the thunders roar
+[01:19.50]You don't need to be afraid
+[01:22.66]I'll lead you through the storm
+[01:26.06]So please remember when I say
+[01:29.68]I'm with you always
+[01:56.59]
+[01:56.59]When you are worn out
+[02:00.06]And you are let down
+[02:03.08]Remember I am just a prayer away
+[02:09.87]When every door is locked
+[02:13.00]And you feel so lost
+[02:16.41]Remember I am just a prayer away
+[02:22.73]
+[02:22.73]Hold fast, I'll guide you through the night
+[02:28.94]And fear not for I am by your side
+[02:35.81]
+[02:35.81]Listen through the rain
+[02:39.06]And you can hear the angels say
+[02:42.38]Help is on the way
+[02:45.77]The moment you begin to pray
+[02:48.61]When the thunders roar
+[02:52.22]You don't need to be afraid
+[02:55.22]I'll lead you through the storm
+[02:58.67]So please remember when I say
+[03:02.35]I'm with you always
+[03:08.30]
+[03:08.30]Come and walk with me, yeah
+[03:14.42]Come and talk with me, yeah
+[03:21.12]Soar on eagles' wings
+[03:25.38]Run and not be faint
+[03:32.16]
+[03:32.16]Listen through the rain
+[03:35.44]And you can hear the angels say
+[03:38.49]Help is on the way
+[03:41.84]The moment you begin to pray
+[03:45.06]When the thunders roar
+[03:48.50]You don't need to be afraid
+[03:51.48]I'll lead you through the storm
+[03:54.94]So please remember when I say
+[03:58.54]I'm with you always
+[04:12.24]I'm with you always