Added the JSON JUnit tests.

src/Welsh Vocabulary Tutor/src/main/java/uk/ac/aber/cs22120/group20/test/JSONTest.java

@@ -1,5 +1,19 @@
 package uk.ac.aber.cs22120.group20.test;
 
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.Assert;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import uk.ac.aber.cs22120.group20.json.DictionaryEntry;
+import uk.ac.aber.cs22120.group20.json.JsonProcessing;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.util.Arrays;
+import java.util.LinkedList;
+
 /**
  * Class that contains methods which will be used to test that the JSON package classes are
  * correctly loading and saving to and from the JSON file.
@@ -8,21 +22,55 @@ package uk.ac.aber.cs22120.group20.test;
  * @See
  */
 public class JSONTest {
+    static LinkedList<DictionaryEntry> testList;
+    LinkedList<DictionaryEntry> loadedList;
+    static File testFile;
+    static JsonProcessing processor = new JsonProcessing();
+
+
+    @BeforeAll
+    public static void setupTest() {
+
+        // Populate a test list with DictionaryEntrys that is to be used for the loading/saving tests.
+        testList = new LinkedList<>(Arrays.asList(new DictionaryEntry("abbey","abaty","nm"), new DictionaryEntry("about to", "ar fin", "other"),
+                new DictionaryEntry("above","uwchben","other"), new DictionaryEntry("abroad","dramor","other"),
+                new DictionaryEntry("abstract","haniaethol","other")));
+
+        // Create a JSON test file in the test package
+        testFile = new File("src/main/java/uk/ac/aber/cs22120/group20/test/jsontest.json");
+
+        // Save the testList to the testFile.
+        processor.writeOutJson("src/main/java/uk/ac/aber/cs22120/group20/test/jsontest.json", testList);
+    }
 
     /**
      * JUnit test to check that the JSON file has been correctly loaded.
      */
-    @test public void testLoad(){
+    @Test
+    public void testLoad(){
 
+        // Load the DictionaryEntry's from testFile and check if the loaded list matches the test list.
+        loadedList = processor.readInJson(testFile);
+        Assert.assertArrayEquals(testList.toArray(),loadedList.toArray());
     }
 
     /**
      * JUnit test to check that any changes to the list of definitions are
      * updated and saved to the JSON file accordingly.
      */
-    @test public void testSave(){
+    @Test public void testSave(){
+        // Add an additional word to the testList and save it to jsontest.
+        testList.add(new DictionaryEntry("beer", "cwrw", "nm"));
+        processor.writeOutJson("src/main/java/uk/ac/aber/cs22120/group20/test/jsontest.json", testList);
 
+        // Load the DictionaryEntry's back from the file and check that they match the testList.
+        loadedList = processor.readInJson(testFile);
+        Assert.assertArrayEquals(testList.toArray(), loadedList.toArray());
     }
 
+    @AfterAll
+    public static void deleteFile() {
+        testFile.delete();
+    }
 
 }