Message file verifier: allow to simply enter the language code instead of full path

- To check a single file just enter the language file, e.g. "es"
- Pass File object to MessageFileVerifier instead of String path that will be constructed to a File again...

src/test/java/tools/utils/FileUtils.java

@@ -3,6 +3,7 @@ package tools.utils;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.nio.file.StandardOpenOption;
 import java.util.List;
@@ -22,10 +23,14 @@ public final class FileUtils {
     }
 
     public static void writeToFile(String outputFile, String contents) {
+        writeToFile(Paths.get(outputFile), contents);
+    }
+
+    public static void writeToFile(Path path, String contents) {
         try {
-            Files.write(Paths.get(outputFile), contents.getBytes());
+            Files.write(path, contents.getBytes());
         } catch (IOException e) {
-            throw new UnsupportedOperationException("Failed to write to file '" + outputFile + "'", e);
+            throw new UnsupportedOperationException("Failed to write to file '" + path + "'", e);
         }
     }
 
@@ -45,11 +50,11 @@ public final class FileUtils {
         }
     }
 
-    public static List<String> readLinesFromFile(String file) {
+    public static List<String> readLinesFromFile(Path path) {
         try {
-            return Files.readAllLines(Paths.get(file), StandardCharsets.UTF_8);
+            return Files.readAllLines(path, StandardCharsets.UTF_8);
         } catch (IOException e) {
-            throw new UnsupportedOperationException("Could not read from file '" + file + "'", e);
+            throw new UnsupportedOperationException("Could not read from file '" + path + "'", e);
         }
     }