[FAIT PAR VICTOR] --> problem authentication

Test class DieselEngine

garage/src/tests/DieselEngineTest.java

+package tests;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import vehicle.part.engine.DieselEngine;
+
+import static org.junit.Assert.*;
+
+public class DieselEngineTest {
+
+    private DieselEngine dieselEngine;
+
+    @Before
+    public void setUp(){
+        dieselEngine = new DieselEngine("Un cylindre", 10.00);
+    }
+
+    @Test
+    public String toString() {
+        String expected = "Diesel vehicle.parts.Engine";
+        Assert.assertEquals(expected, dieselEngine.toString());
+        return null;
+    }
+}
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