Verify String array with a null item or only null item works.

Author: greenrobot-team

tests/objectbox-java-test/src/test/java/io/objectbox/AbstractObjectBoxTest.java

@@ -264,7 +264,9 @@ protected void assertTestEntity(TestEntity actual, @Nullable String simpleString
         assertEquals(200 + nr / 10f, actual.getSimpleFloat(), 0);
         assertEquals(2000 + nr / 100f, actual.getSimpleDouble(), 0);
         assertArrayEquals(new byte[]{1, 2, (byte) nr}, actual.getSimpleByteArray());
-        assertArrayEquals(new String[]{simpleString}, actual.getSimpleStringArray());
+        // null array items are ignored, so array will be empty
+        String[] expectedStringArray = simpleString == null ? new String[]{} : new String[]{simpleString};
+        assertArrayEquals(expectedStringArray, actual.getSimpleStringArray());
         assertEquals((short) (100 + nr), actual.getSimpleShortU());
         assertEquals(nr, actual.getSimpleIntU());
         assertEquals(1000 + nr, actual.getSimpleLongU());

tests/objectbox-java-test/src/test/java/io/objectbox/BoxTest.java

@@ -51,6 +51,34 @@ public void testPutAndGet() {
         assertTestEntity(entityRead, simpleString, simpleInt);
     }
 
+    @Test
+    public void testPutStringArray_withNull_ignoresNull() {
+        final String[] stringArray = new String[]{"sunrise", null, "sunset"};
+        final String[] expectedStringArray = new String[]{"sunrise", "sunset"};
+
+        TestEntity entity = new TestEntity();
+        entity.setSimpleStringArray(stringArray);
+        box.put(entity);
+
+        TestEntity entityRead = box.get(entity.getId());
+        assertNotNull(entityRead);
+        assertArrayEquals(expectedStringArray, entityRead.getSimpleStringArray());
+    }
+
+    @Test
+    public void testPutStringArray_onlyNull_isEmpty() {
+        final String[] stringArray = new String[]{null};
+        final String[] expectedStringArray = new String[]{};
+
+        TestEntity entity = new TestEntity();
+        entity.setSimpleStringArray(stringArray);
+        box.put(entity);
+
+        TestEntity entityRead = box.get(entity.getId());
+        assertNotNull(entityRead);
+        assertArrayEquals(expectedStringArray, entityRead.getSimpleStringArray());
+    }
+
     @Test
     public void testPutGetUpdateGetRemove() {
         // create an entity