Moving tests in Junit5 CalcEngineTest.java

src/main/java/fr/nancy/iut/CalcEngineTester.java

-package fr.nancy.iut;
-
-/**
- * Test the CalcEngine class.
- * 
- * @author Hacker T. Largebrain 
- * @version 1.0
- */
-// package calculator;
-
-public class CalcEngineTester
-{
-    // The engine to be tested.
-    private CalcEngine engine;
-
-    /**
-     * Constructor for objects of class CalcEngineTester
-     */
-    public CalcEngineTester()
-    {
-        engine = new CalcEngine();
-    }
-    
-    /**
-     * Test everything.
-     */
-    public void testAll()
-    {
-        System.out.println("Testing the addition operation.");
-        System.out.println("The result is: " + testPlus());
-        System.out.println("Testing the subtraction operation.");
-        System.out.println("The result is: " + testMinus());
-        System.out.println("All tests passed.");
-    }
-
-    /**
-     * Test the plus operation of the engine.
-     * @return the result of calculating 3+4.
-     */
-    public int testPlus()
-    {
-        // Make sure the engine is in a valid starting state.
-        engine.clear();
-        // Simulate the key presses: 3 + 4 =
-        engine.numberPressed(3);
-        engine.plus();
-        engine.numberPressed(4);
-        engine.equals();
-        // Return the result, which should be 7.
-        return engine.getDisplayValue();
-    }
-
-    /**
-     * Test the minus operation of the engine.
-     * @return the result of calculating 9 - 4.
-     */
-    public int testMinus()
-    {
-        // Make sure the engine is in a valid starting state.
-        engine.clear();
-        // Simulate the presses: 9 - 4 =
-        engine.numberPressed(9);
-        engine.minus();
-        engine.numberPressed(4);
-        engine.equals();
-        // Return the result, which should be 5.
-        return engine.getDisplayValue();
-    }
-
-    public static void main(String[] args) {
-        CalcEngineTester tester =  new CalcEngineTester();
-        tester.testAll();
-    }
-}

src/test/java/fr/nancy/iut/CalcEngineTest.java

 package fr.nancy.iut;
 
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
-public class CalcEngineTest {
-    @Test
-    void testClear() {
-
-    }
-
-    @Test
-    void testEquals() {
-
-    }
-
-    @Test
-    void testGetAuthor() {
-
-    }
-
-    @Test
-    void testGetDisplayValue() {
-
-    }
-
-    @Test
-    void testGetTitle() {
-
-    }
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-    @Test
-    void testGetVersion() {
+public class CalcEngineTest {
 
-    }
+    private final CalcEngine engine = new CalcEngine();
 
     @Test
+    @DisplayName("Testing the subtraction operation : 9 - 4 = 5")
     void testMinus() {
-
-    }
-
-    @Test
-    void testNumberPressed() {
-
+        // Make sure the engine is in a valid starting state.
+        engine.clear();
+        // Simulate the presses: 9 - 4 =
+        engine.numberPressed(9);
+        engine.minus();
+        engine.numberPressed(4);
+        engine.equals();
+        // Return the result, which should be 5.
+        assertEquals(5, engine.getDisplayValue());
     }
 
     @Test
+    @DisplayName("TTesting the addition operation : 3 + 4 = 7")
     void testPlus() {
-
+        // Make sure the engine is in a valid starting state.
+        engine.clear();
+        // Simulate the key presses: 3 + 4 =
+        engine.numberPressed(3);
+        engine.plus();
+        engine.numberPressed(4);
+        engine.equals();
+        // Return the result, which should be 7.
+        assertEquals(7, engine.getDisplayValue());
     }
+
 }