Add settingsprovider test

src/main/java/app/settings/SettingsProvider.java

@@ -19,13 +19,19 @@ public class SettingsProvider implements SettingsProviderI {
 
     private EventBus eventBus;
 
-    private String SETTINGS_PATH =
+    private String settingsPath =
       (System.getProperty("os.name").startsWith("Windows"))
       ? System.getProperty("user.home") + "\\AppData\\Roaming\\/BNNsettings.dat"
       : System.getProperty("user.home") + System.getProperty("file.separator") + ".BNNsettings.dat";
 
     private List<String> legalSettings = 
        Arrays.asList("Java", "Markdown", "Monokai", "Solarized Light");
+    
+
+    // Only for testing purposes
+    protected void setSettingsPath(String settingsPath) {
+      this.settingsPath = settingsPath;
+    }
 
 
     public SettingsProvider(EventBus eB) {
@@ -41,7 +47,7 @@ public class SettingsProvider implements SettingsProviderI {
     @Override
     public void loadSettings() {
         List<String> settings = new ArrayList<>();
-        try (Scanner sc = new Scanner(new File(SETTINGS_PATH))) {
+        try (Scanner sc = new Scanner(new File(settingsPath))) {
 
             while (sc.hasNextLine()) {
                 var nextLine = sc.nextLine().trim();
@@ -69,7 +75,7 @@ public class SettingsProvider implements SettingsProviderI {
 
     @Override
     public void saveSettings() {
-        try (PrintWriter writer = new PrintWriter(new File(SETTINGS_PATH))) {
+        try (PrintWriter writer = new PrintWriter(new File(settingsPath))) {
             writer.println("- Settings:");
             writer.println("Programming Language = " + Model.getLanguage().getName());
             writer.println("Theme = " + Model.getTheme());

src/main/java/app/settings/SettingsProviderI.java

@@ -2,8 +2,14 @@ package app.settings;
 
 public interface SettingsProviderI {
 
-    void loadSettings();
+  /**
+   * Load settings from disk, and fire events to update the program state
+   */
+  void loadSettings();
 
-    void saveSettings();
+  /**
+   * Save the state from {@link app.model.Model Model} to disk.
+   */
+  void saveSettings();
 
 }