Issue 202: Replaced assertj assertions in simple-linked-list with junit and hamcrest assertions. Removed assertj from simple-linked-list gradle build file.

exercises/simple-linked-list/build.gradle

@@ -8,7 +8,6 @@ repositories {
 
 dependencies {
   testCompile "junit:junit:4.12"
-  testCompile "org.assertj:assertj-core:3.2.0"
 }
 test {
   testLogging {

exercises/simple-linked-list/src/test/java/SimpleLinkedListTest.java

@@ -1,8 +1,10 @@
+import org.junit.Ignore;
+import org.junit.Test;
 
 import java.util.NoSuchElementException;
-import static org.assertj.core.api.Assertions.assertThat;
-import org.junit.Test;
-import org.junit.Ignore;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
 
 public class SimpleLinkedListTest {
 
@@ -10,7 +12,7 @@ public class SimpleLinkedListTest {
     @Test
     public void aNewListIsEmpty() {
         SimpleLinkedList list = new SimpleLinkedList();
-        assertThat(list.size()).isEqualTo(0);
+        assertThat(list.size(), is(0));
     }
 
     @Ignore
@@ -18,7 +20,7 @@ public class SimpleLinkedListTest {
     public void canCreateFromArray() {
         Integer[] values = new Integer[]{1, 2, 3};
         SimpleLinkedList list = new SimpleLinkedList(values);
-        assertThat(list.size()).isEqualTo(3);
+        assertThat(list.size(), is(3));
     }
 
     @Ignore
@@ -34,10 +36,10 @@ public class SimpleLinkedListTest {
         SimpleLinkedList list = new SimpleLinkedList();
         list.push(9);
         list.push(8);
-        assertThat(list.size()).isEqualTo(2);
-        assertThat(list.pop()).isEqualTo(8);
-        assertThat(list.pop()).isEqualTo(9);
-        assertThat(list.size()).isEqualTo(0);
+        assertThat(list.size(), is(2));
+        assertThat(list.pop(), is(8));
+        assertThat(list.pop(), is(9));
+        assertThat(list.size(), is(0));
     }
 
     @Ignore
@@ -50,11 +52,11 @@ public class SimpleLinkedListTest {
         list.push(6);
         list.push(5);
         list.reverse();
-        assertThat(list.pop()).isEqualTo(9);
-        assertThat(list.pop()).isEqualTo(8);
-        assertThat(list.pop()).isEqualTo(7);
-        assertThat(list.pop()).isEqualTo(6);
-        assertThat(list.pop()).isEqualTo(5);
+        assertThat(list.pop(), is(9));
+        assertThat(list.pop(), is(8));
+        assertThat(list.pop(), is(7));
+        assertThat(list.pop(), is(6));
+        assertThat(list.pop(), is(5));
     }
 
     @Ignore
@@ -67,7 +69,7 @@ public class SimpleLinkedListTest {
         list.push(6);
         list.push(5);
         Integer[] expected = {5, 6, 7, 8, 9};
-        assertThat(list.asArray(Integer.class)).containsExactly(expected);
+        assertEquals(list.asArray(Integer.class), expected);
     }
 
     @Ignore
@@ -75,7 +77,7 @@ public class SimpleLinkedListTest {
     public void canReturnEmptyListAsEmptyArray() {
         SimpleLinkedList list = new SimpleLinkedList();
         Object[] expected = {};
-        assertThat(list.asArray(Object.class)).containsExactly(expected);
+        assertEquals(list.asArray(Object.class), expected);
     }
 
 }