~ Matrix tests

eclipse · Sep 16, 2022 · 86e67a0 · 86e67a0
1 parent 837c26c
commit 86e67a0
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diff --git a/...tack/stack-core/src/main/java/org/eclipse/milo/opcua/stack/core/types/builtin/Matrix.java b/...tack/stack-core/src/main/java/org/eclipse/milo/opcua/stack/core/types/builtin/Matrix.java
@@ -171,6 +171,11 @@ public Matrix transform(Function<Object, Object> f) {
         }
     }
 
+    /**
+     * Get an unflattened (nested multidimensional) copy of the contained value.
+     *
+     * @return an unflattened (nested multidimensional) copy of the contained value.
+     */
     public Object unflatten() {
         return ArrayUtil.unflatten(flatArray, dimensions);
     }

diff --git a/.../stack-core/src/test/java/org/eclipse/milo/opcua/stack/core/types/builtin/MatrixTest.java b/.../stack-core/src/test/java/org/eclipse/milo/opcua/stack/core/types/builtin/MatrixTest.java
@@ -1,8 +1,21 @@
+/*
+ * Copyright (c) 2022 the Eclipse Milo Authors
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 package org.eclipse.milo.opcua.stack.core.types.builtin;
 
+import java.util.Arrays;
+
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 class MatrixTest {
     private final int[][] primitiveInt2d = {{1, 2}, {3, 4}};
@@ -11,6 +24,36 @@ class MatrixTest {
     private final Matrix primitiveMatrix2d = new Matrix(primitiveInt2d);
     private final Matrix boxedMatrix2d = new Matrix(boxedInt2d);
 
+    @Test
+    void matrixTransform() {
+        Matrix m = Matrix.ofInt32(new int[][]{
+            {0, 1},
+            {2, 3}
+        });
+
+        Matrix transformed = m.transform(Object::toString);
+
+        Matrix expected = Matrix.ofString(new String[][]{
+            new String[]{"0", "1"},
+            new String[]{"2", "3"}
+        });
+
+        assertEquals(expected, transformed);
+    }
+
+    @Test
+    void matrixUnflatten() {
+        String[][] value = {
+            new String[]{"0", "1"},
+            new String[]{"2", "3"}
+        };
+
+        Matrix m = Matrix.ofString(value);
+
+        assertTrue(Arrays.deepEquals(new String[]{"0", "1", "2", "3"}, (Object[]) m.getElements()));
+        assertTrue(Arrays.deepEquals(value, (String[][]) m.unflatten()));
+    }
+
     @Test
     void matrixToString() {
         assertEquals(