add testCodecTranspose

Author: brokkoli71

src/main/java/dev/zarr/zarrjava/v3/codec/core/TransposeCodec.java

@@ -54,6 +54,8 @@ public long computeEncodedSize(long inputByteLength,
 
   public static final class Configuration {
 
+    // TODO: order 'C' and 'F' are deprecated
+    // https://zarr-specs.readthedocs.io/en/latest/v3/codecs/transpose/v1.0.html#transpose-codec-v1
     public final String order;
 
     @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)

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

@@ -10,10 +10,8 @@
 import dev.zarr.zarrjava.store.StoreHandle;
 import dev.zarr.zarrjava.utils.MultiArrayUtils;
 import dev.zarr.zarrjava.v3.*;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Disabled;
-import org.junit.jupiter.api.Test;
+import dev.zarr.zarrjava.v3.codec.core.TransposeCodec;
+import org.junit.jupiter.api.*;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
 
@@ -36,12 +34,12 @@ public class ZarrTest {
 
     final static Path TESTDATA = Paths.get("testdata");
     final static Path TESTOUTPUT = Paths.get("testoutput");
-
     //TODO: is the Path with / instead of \ readable in Windows?
     final static Path ZARRITA_WRITE_PATH = Paths.get("src/test/java/dev/zarr/zarrjava/zarrita_write.py");
     final static Path ZARRITA_READ_PATH = Paths.get("src/test/java/dev/zarr/zarrjava/zarrita_read.py");
-
     final static String CONDA_ENVIRONMENT = "zarrita_env";
+    static ucar.ma2.Array testData;
+    static ucar.ma2.Array testDataTransposed;
 
     @BeforeAll
     public static void clearTestoutputFolder() throws IOException {
@@ -96,6 +94,52 @@ public static void installZarritaInCondaEnv() throws IOException {
         }
     }
 
+    @BeforeEach
+    public void fillTestData() {
+        testData = ucar.ma2.Array.factory(ucar.ma2.DataType.UINT, new int[]{4, 4, 4}, new int[]{
+                0, 1, 2, 3,
+                4, 5, 6, 7,
+                8, 9, 10, 11,
+                12, 13, 14, 15,
+
+                16, 17, 18, 19,
+                20, 21, 22, 23,
+                24, 25, 26, 27,
+                28, 29, 30, 31,
+
+                32, 33, 34, 35,
+                36, 37, 38, 39,
+                40, 41, 42, 43,
+                44, 45, 46, 47,
+
+                48, 49, 50, 51,
+                52, 53, 54, 55,
+                56, 57, 58, 59,
+                60, 61, 62, 63
+        });
+        testDataTransposed = ucar.ma2.Array.factory(ucar.ma2.DataType.UINT, new int[]{4, 4, 4}, new int[]{
+                0, 16, 32, 48,
+                4, 20, 36, 52,
+                8, 24, 40, 56,
+                12, 28, 44, 60,
+
+                1, 17, 33, 49,
+                5, 21, 37, 53,
+                9, 25, 41, 57,
+                13, 29, 45, 61,
+
+                2, 18, 34, 50,
+                6, 22, 38, 54,
+                10, 26, 42, 58,
+                14, 30, 46, 62,
+
+                3, 19, 35, 51,
+                7, 23, 39, 55,
+                11, 27, 43, 59,
+                15, 31, 47, 63
+        });
+    }
+
     @ParameterizedTest
     @ValueSource(strings = {"blosc", "gzip", "zstd", "bytes", "transpose", "sharding", "crc32c"})
     public void testReadFromZarrita(String codec) throws IOException, ZarrException, InterruptedException {
@@ -251,6 +295,21 @@ public void testCodecsWriteRead(String codec) throws IOException, ZarrException,
         Assertions.assertArrayEquals(testData, (int[]) result.get1DJavaArray(ucar.ma2.DataType.INT));
     }
 
+    @ParameterizedTest
+    @ValueSource(strings = {"F", "C"})
+    public void testCodecTranspose(String order) throws IOException, ZarrException, InterruptedException {
+        ArrayMetadata.CoreArrayMetadata metadata = new ArrayMetadata.CoreArrayMetadata(
+                new long[]{4, 4, 4},
+                new int[]{4, 4, 4},
+                DataType.UINT32,
+                null);
+        TransposeCodec transposeCodec = new TransposeCodec(new TransposeCodec.Configuration(order));
+
+        //TODO is that what is expected?
+        assertEquals(testDataTransposed, transposeCodec.encode(testData, metadata));
+        assertEquals(testData, transposeCodec.decode(testDataTransposed, metadata));
+    }
+
     @Test
     public void testFileSystemStores() throws IOException, ZarrException {
         FilesystemStore fsStore = new FilesystemStore(TESTDATA);