add group attributes unit tests

Author: brokkoli71

src/test/java/dev/zarr/zarrjava/ZarrV2Test.java

@@ -38,8 +38,6 @@ public void testCreateBlosc(String cname, String shuffle, int clevel) throws IOE
         Assertions.assertEquals(0, outArray.getByte(0));
     }
 
-
-
     @ParameterizedTest
     @CsvSource({
         "BOOL", "FLOAT64"
@@ -48,7 +46,7 @@ public void testReadBloscDetectTypesize(DataType dt) throws IOException, ZarrExc
         String arrayname = dt == DataType.BOOL ? "bool" : "double";
         StoreHandle storeHandle = new FilesystemStore(TESTDATA).resolve("v2_sample", arrayname);
         Array array = Array.open(storeHandle);
-        ucar.ma2.Array output = array.read(new long[]{0, 0, 0}, new int[]{3, 4, 5});
+        array.read(new long[]{0, 0, 0}, new int[]{3, 4, 5});
         Assertions.assertEquals(dt, array.metadata().dataType);
     }
 
@@ -344,4 +342,18 @@ public void testResizeArray() throws IOException, ZarrException {
         Arrays.fill(expectedData, 1);
         Assertions.assertArrayEquals(expectedData, (int[]) data.get1DJavaArray(ma2DataType));
     }
+
+    @Test
+    public void testGroupAttributes() throws IOException, ZarrException {
+        StoreHandle storeHandle = new FilesystemStore(TESTOUTPUT).resolve("testGroupAttributesV2");
+
+        Group group = Group.create(storeHandle, new Attributes() {{
+            put("group_attr", "group_value");
+        }});
+
+        Assertions.assertEquals("group_value", group.metadata().attributes().getString("group_attr"));
+
+        group = Group.open(storeHandle);
+        Assertions.assertEquals("group_value", group.metadata().attributes().getString("group_attr"));
+    }
 }

src/test/java/dev/zarr/zarrjava/ZarrV3Test.java

@@ -556,16 +556,17 @@ public void testCreateGroup() throws ZarrException, IOException {
 
         Group group = Group.create(storeHandle, new GroupMetadata(attributes));
         Assertions.assertTrue(storeHandle.resolve("zarr.json").exists());
-        Assertions.assertEquals("world", group.metadata.attributes.get("hello"));
+        Assertions.assertEquals("world", group.metadata.attributes().get("hello"));
 
         group = Group.create(storeHandlePath, new GroupMetadata(attributes));
         Assertions.assertTrue(Files.exists(storeHandlePath.resolve("zarr.json")));
-        Assertions.assertEquals("world", group.metadata.attributes.get("hello"));
+        Assertions.assertEquals("world", group.metadata.attributes().get("hello"));
 
         group = Group.create(storeHandleString, new GroupMetadata(attributes));
         Assertions.assertTrue(Files.exists(Paths.get(storeHandleString).resolve("zarr.json")));
-        Assertions.assertEquals("world", group.metadata.attributes.get("hello"));
+        Assertions.assertEquals("world", group.metadata.attributes().get("hello"));
     }
+
     @Test
     public void testAttributes() throws IOException, ZarrException {
         StoreHandle storeHandle = new FilesystemStore(TESTOUTPUT).resolve("testAttributesV3");
@@ -593,7 +594,6 @@ public void testAttributes() throws IOException, ZarrException {
          Assertions.assertEquals("attribute", arrayOpened.metadata().attributes().getString("another"));
     }
 
-
     @Test
     public void testSetAndUpdateAttributes() throws IOException, ZarrException {
         StoreHandle storeHandle = new FilesystemStore(TESTOUTPUT).resolve("testSetAttributesV3");
@@ -654,4 +654,18 @@ public void testResizeArray() throws IOException, ZarrException {
         Arrays.fill(expectedData, 1);
         Assertions.assertArrayEquals(expectedData, (int[]) data.get1DJavaArray(ma2DataType));
     }
+    
+    @Test
+    public void testGroupAttributes() throws IOException, ZarrException {
+        StoreHandle storeHandle = new FilesystemStore(TESTOUTPUT).resolve("testGroupAttributesV3");
+
+        Group group = Group.create(storeHandle, new Attributes() {{
+            put("group_attr", "group_value");
+        }});
+
+        Assertions.assertEquals("group_value", group.metadata().attributes().getString("group_attr"));
+
+        group = Group.open(storeHandle);
+        Assertions.assertEquals("group_value", group.metadata().attributes().getString("group_attr"));
+    }
 }