Fixes for issue #105

src/main/java/org/skyscreamer/jsonassert/comparator/AbstractComparator.java

@@ -124,8 +124,8 @@ protected void compareJSONArrayOfSimpleValues(String key, JSONArray expected, JS
 
     protected void compareJSONArrayWithStrictOrder(String key, JSONArray expected, JSONArray actual, JSONCompareResult result) throws JSONException {
         for (int i = 0; i < expected.length(); ++i) {
-            Object expectedValue = expected.get(i);
-            Object actualValue = actual.get(i);
+            Object expectedValue = JSONCompareUtil.getObjectOrNull(expected, i);
+            Object actualValue = JSONCompareUtil.getObjectOrNull(actual, i);
             compareValues(key + "[" + i + "]", expectedValue, actualValue, result);
         }
     }
@@ -138,10 +138,17 @@ protected void recursivelyCompareJSONArray(String key, JSONArray expected, JSONA
                                                JSONCompareResult result) throws JSONException {
         Set<Integer> matched = new HashSet<Integer>();
         for (int i = 0; i < expected.length(); ++i) {
-            Object expectedElement = expected.get(i);
+            Object expectedElement = JSONCompareUtil.getObjectOrNull(expected, i);
             boolean matchFound = false;
             for (int j = 0; j < actual.length(); ++j) {
-                Object actualElement = actual.get(j);
+                Object actualElement = JSONCompareUtil.getObjectOrNull(actual, j);
+                if (expectedElement == actualElement) {
+                    matchFound = true;
+                    break;
+                }
+                if ((expectedElement == null && actualElement != null) || (expectedElement != null && actualElement == null)) {
+                    continue;
+                }
                 if (matched.contains(j) || !actualElement.getClass().equals(expectedElement.getClass())) {
                     continue;
                 }

src/main/java/org/skyscreamer/jsonassert/comparator/DefaultComparator.java

@@ -50,6 +50,12 @@ public void compareJSON(String prefix, JSONObject expected, JSONObject actual, J
     @Override
     public void compareValues(String prefix, Object expectedValue, Object actualValue, JSONCompareResult result)
             throws JSONException {
+        if (expectedValue == actualValue) {
+            return;
+        }
+        if ((expectedValue == null && actualValue != null) || (expectedValue != null && actualValue == null)) {
+            result.fail(prefix, expectedValue, actualValue);
+        }
         if (areNumbers(expectedValue, actualValue)) {
             if (areNotSameDoubles(expectedValue, actualValue)) {
                 result.fail(prefix, expectedValue, actualValue);

src/main/java/org/skyscreamer/jsonassert/comparator/JSONCompareUtil.java

@@ -121,11 +121,23 @@ public static boolean isUsableAsUniqueKey(String candidate, JSONArray array) thr
     public static List<Object> jsonArrayToList(JSONArray expected) throws JSONException {
         List<Object> jsonObjects = new ArrayList<Object>(expected.length());
         for (int i = 0; i < expected.length(); ++i) {
-            jsonObjects.add(expected.get(i));
+            jsonObjects.add(getObjectOrNull(expected, i));
         }
         return jsonObjects;
     }
 
+    /**
+     * Returns the value present in the given index position. If null value is present, it will return null
+     *
+     * @param jsonArray the JSON array to get value from
+     * @param index index of object to retrieve
+     * @return value at the given index position
+     * @throws JSONException JSON parsing error
+     */
+    public static Object getObjectOrNull(JSONArray jsonArray, int index) throws JSONException {
+        return jsonArray.isNull(index) ? null : jsonArray.get(index);
+    }
+
     /**
      * Returns whether all of the elements in the given array are simple values.
      *
@@ -136,7 +148,7 @@ public static List<Object> jsonArrayToList(JSONArray expected) throws JSONExcept
      */
     public static boolean allSimpleValues(JSONArray array) throws JSONException {
         for (int i = 0; i < array.length(); ++i) {
-            if (!isSimpleValue(array.get(i))) {
+            if (!array.isNull(i) && !isSimpleValue(array.get(i))) {
                 return false;
             }
         }

src/test/java/org/skyscreamer/jsonassert/JSONArrayWithNullTest.java

@@ -0,0 +1,49 @@
+package org.skyscreamer.jsonassert;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.junit.Test;
+
+public class JSONArrayWithNullTest {
+    @Test
+    public void testJSONArrayWithNullValue() throws JSONException {
+        JSONArray jsonArray1 = getJSONArray1();
+        JSONArray jsonArray2 = getJSONArray2();
+
+        JSONAssert.assertEquals(jsonArray1, jsonArray2, true);
+        JSONAssert.assertEquals(jsonArray1, jsonArray2, false);
+    }
+
+    @Test
+    public void testJSONArrayWithNullValueAndJsonObject() throws JSONException {
+        JSONArray jsonArray1 = getJSONArray1();
+        JSONObject jsonObject1 = new JSONObject();
+        jsonObject1.put("hey", "value");
+
+        JSONArray jsonArray2 = getJSONArray2();
+        JSONObject jsonObject2 = new JSONObject();
+        jsonObject2.put("hey", "value");
+
+        JSONAssert.assertEquals(jsonArray1, jsonArray2, true);
+        JSONAssert.assertEquals(jsonArray1, jsonArray2, false);
+    }
+
+    private JSONArray getJSONArray1() {
+        JSONArray jsonArray1 = new JSONArray();
+        jsonArray1.put(1);
+        jsonArray1.put(null);
+        jsonArray1.put(3);
+        jsonArray1.put(2);
+        return jsonArray1;
+    }
+
+    private JSONArray getJSONArray2() {
+        JSONArray jsonArray1 = new JSONArray();
+        jsonArray1.put(1);
+        jsonArray1.put(null);
+        jsonArray1.put(3);
+        jsonArray1.put(2);
+        return jsonArray1;
+    }
+}