1 files changed, 9 insertions, 21 deletions
diff --git a/Week7/test/polynomial/PolynomialTest.java b/Week7/test/polynomial/PolynomialTest.java
index 7d7275a..13f7405 100644
--- a/Week7/test/polynomial/PolynomialTest.java
+++ b/Week7/test/polynomial/PolynomialTest.java
@@ -43,10 +43,8 @@ public class PolynomialTest {
     @Test
     public void testToString() {
         System.out.println("toString");
-        Polynomial instance = new Polynomial("3 5 -4 1 2.5 0 -3.4 -7");     // Test exp=0, exp=1, exp>1, positive & negative integer & floating point coefficients
-        String expResult = "3.000000x^5-4.000000x+2.500000-3.400000x^-7";
-        String result = instance.toString();
-        assertEquals(expResult, result);
+        // Test exp=0, exp=1, exp>1, positive & negative integer & floating point coefficients
+        assertEquals("3.000000x^5-4.000000x+2.500000-3.400000x^-7", new Polynomial("3 5 -4 1 2.5 0 -3.4 -7").toString());
     }
 
     /**
@@ -55,10 +53,9 @@ public class PolynomialTest {
     @Test
     public void testMinus() {
         System.out.println("minus");
-        Polynomial b = new Polynomial("5 3 4 2 3 1 10 0"); // 5x^3 + 4x^2 + 3x + 10
-        Polynomial instance = new Polynomial("7 4 -4 2 3 1 5 0"); // 7x^4 - 4x^2 + 3x + 5
-        instance.minus(b);
-        assertEquals(new Polynomial("7 4 -5 3 -8 2 -5 0"), instance); // 7x^4 - 5x^3 - 8x^2 - 5
+        Polynomial instance = new Polynomial("7 4 -4 2 3 1 5 0");       // 7x^4 - 4x^2 + 3x + 5
+        instance.minus(new Polynomial("5 3 4 2 3 1 10 0"));             // 5x^3 + 4x^2 + 3x + 10
+        assertEquals(new Polynomial("7 4 -5 3 -8 2 -5 0"), instance);   // 7x^4 - 5x^3 - 8x^2 - 5
     }
 
     /**
@@ -67,9 +64,8 @@ public class PolynomialTest {
     @Test
     public void testTimes() {
         System.out.println("times");
-        Polynomial b = new Polynomial("5 3 4 2");
         Polynomial instance = new Polynomial("7 1 6 3");
-        instance.times(b);
+        instance.times(new Polynomial("5 3 4 2"));
         assertEquals(new Polynomial("30 6 24 5 35 4 28 3"), instance);
     }
 
@@ -92,11 +88,7 @@ public class PolynomialTest {
     @Test
     public void testEquals() {
         System.out.println("equals");
-        Object other_poly = new Polynomial("3 5 4 2");
-        Polynomial instance = new Polynomial("4 2 3 5");
-        boolean expResult = true;
-        boolean result = instance.equals(other_poly);
-        assertEquals(expResult, result);
+        assertEquals(true, new Polynomial("4 2 3 5").equals(new Polynomial("3 5 4 2")));
     }
 
     /**
@@ -105,9 +97,8 @@ public class PolynomialTest {
     @Test
     public void testPlus_Polynomial() {
         System.out.println("plus");
-        Polynomial b = new Polynomial("5 3 4 2 3 1 10 0");              // 5x^3 + 4x^2 + 3x + 10
         Polynomial instance = new Polynomial("7 4 -4 2 7 1 5 0");       // 7x^4 - 4x^2 + 7x + 5
-        instance.plus(b);
+        instance.plus(new Polynomial("5 3 4 2 3 1 10 0"));              // 5x^3 + 4x^2 + 3x + 10
         assertEquals(new Polynomial("7 4 5 3 10 1 15 0"), instance);    // 7x^4 + 5x^3 + 10x + 15
     }
 
@@ -117,11 +108,8 @@ public class PolynomialTest {
     @Test
     public void testApply() {
         System.out.println("apply");
-        double x = 17.0;
         Polynomial instance = new Polynomial("5 4 0.5 3 9 2 8 0");
-        double expResult = 422670.5;
-        double result = instance.apply(x);
-        assertEquals(expResult, result, 0.0);
+        assertEquals(422670.5, instance.apply(17.0), 0.0);
     }
     
 }