changes to method tests

src/test/java/CalculatorResourceTest.java

@@ -12,8 +12,8 @@ public class CalculatorResourceTest{
         String expression = "100+300";
         assertEquals(400, calculatorResource.calculate(expression));
 
-        expression = " 300 - 99 ";
-        assertEquals(201, calculatorResource.calculate(expression));
+        expression = " 300 - 99 - 100";
+        assertEquals(101, calculatorResource.calculate(expression));
     }
 
     @Test
@@ -23,8 +23,8 @@ public class CalculatorResourceTest{
         String expression = "100+300";
         assertEquals(400, calculatorResource.sum(expression));
 
-        expression = "300+99";
-        assertEquals(399, calculatorResource.sum(expression));
+        expression = "300+99+100";
+        assertEquals(499, calculatorResource.sum(expression));
     }
 
     @Test
@@ -34,24 +34,24 @@ public class CalculatorResourceTest{
         String expression = "999-100";
         assertEquals(899, calculatorResource.subtraction(expression));
 
-        expression = "20-2";
-        assertEquals(18, calculatorResource.subtraction(expression));
+        expression = "20-2-8";
+        assertEquals(10, calculatorResource.subtraction(expression));
     }
 
     @Test
     public void testMultiplication(){
         CalculatorResource calculatorResource = new CalculatorResource();
 
-        String equation = "5*5";
-        assertEquals(25, calculatorResource.multiplication(equation));
+        String equation = "5*5*10";
+        assertEquals(250, calculatorResource.multiplication(equation));
     }
 
     @Test
     public void testDivision(){
         CalculatorResource calculatorResource = new CalculatorResource();
 
-        String equation = "16/4";
-        assertEquals(4, calculatorResource.division(equation));
+        String equation = "16/4/2";
+        assertEquals(2, calculatorResource.division(equation));
     }
 
 }