Created Utils, UtilsTest and test file (#29)

Closes #26

.gitignore

@@ -21,3 +21,5 @@
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+out/*

Car Routing.iml

@@ -9,7 +9,26 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="library" name="jade" level="project" />
     <orderEntry type="library" name="org.junit.jupiter:junit-jupiter:5.4.2" level="project" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/lib/jade.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="library" name="jade" level="project" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="file://$MODULE_DIR$/lib" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+        <jarDirectory url="file://$MODULE_DIR$/lib" recursive="false" />
+      </library>
+    </orderEntry>
   </component>
 </module>

src/utils/Utils.java

@@ -0,0 +1,40 @@
+package utils;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.util.Scanner;
+
+public class Utils {
+
+    public static Scanner getFileReference(final String filePath) {
+
+        File f;
+        Scanner fileReference;
+
+        try {
+            f = new File(filePath);
+
+            if(f.exists()) {
+                System.out.println(filePath + " file opened.");
+            }
+            else {
+                System.out.println(filePath + " doesn't exist.");
+                return null;
+            }
+        } catch(NullPointerException | SecurityException e) {
+            System.out.println(filePath + "couldn't be opened.");
+            System.out.println(e.getMessage());
+            return null;
+        }
+
+        try {
+            fileReference= new Scanner(f);
+        } catch(FileNotFoundException e) {
+            System.out.println(filePath + "couldn't be found.");
+            System.out.println(e.getMessage());
+            return null;
+        }
+
+        return fileReference;
+    }
+}

test/java/utils/UtilsTest.java

@@ -0,0 +1,26 @@
+package utils;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Scanner;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class UtilsTest {
+
+    @Test
+    void getFileReference() {
+        Scanner file = Utils.getFileReference("test/resources/fileTest.txt");
+
+        assertNotNull(file);
+
+        int nLines = 0;
+
+        while(file.hasNextLine()) {
+            nLines++;
+            System.out.println(file.nextLine());
+        }
+
+        assertEquals(2, nLines, "The number of lines should be 2");
+    }
+}

test/resources/fileTest.txt

@@ -0,0 +1,2 @@
+hello world!
+I'm in.