Revert "Revert "Lesters/cell cast java""

This reverts commit d2c61030d6c62b8c4889d3471d2ee5f17bb14a5f.

1 files changed, 38 insertions, 0 deletions

diff --git a/vespajlib/src/test/java/com/yahoo/tensor/functions/CellCastTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/functions/CellCastTestCase.java
new file mode 100644
index 00000000000..bc10ecc3abd
--- /dev/null
+++ b/vespajlib/src/test/java/com/yahoo/tensor/functions/CellCastTestCase.java
@@ -0,0 +1,38 @@
+// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.tensor.functions;
+
+import com.yahoo.tensor.Tensor;
+import com.yahoo.tensor.TensorType;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * @author lesters
+ */
+public class CellCastTestCase {
+
+    @Test
+    public void testCellCasting() {
+        Tensor tensor;
+
+        tensor = Tensor.from("tensor(x[3]):[1.0, 2.0, 3.0]");
+        assertEquals(TensorType.Value.DOUBLE, tensor.type().valueType());
+        assertEquals(TensorType.Value.DOUBLE, tensor.cellCast(TensorType.Value.DOUBLE).type().valueType());
+        assertEquals(TensorType.Value.FLOAT, tensor.cellCast(TensorType.Value.FLOAT).type().valueType());
+        assertEquals(tensor, tensor.cellCast(TensorType.Value.FLOAT));
+
+        tensor = Tensor.from("tensor<double>(x{}):{{x:0}:1.0,{x:1}:2.0,{x:2}:3.0}");
+        assertEquals(TensorType.Value.DOUBLE, tensor.type().valueType());
+        assertEquals(TensorType.Value.DOUBLE, tensor.cellCast(TensorType.Value.DOUBLE).type().valueType());
+        assertEquals(TensorType.Value.FLOAT, tensor.cellCast(TensorType.Value.FLOAT).type().valueType());
+        assertEquals(tensor, tensor.cellCast(TensorType.Value.FLOAT));
+
+        tensor = Tensor.from("tensor<float>(x[3],y{}):{a:[1.0, 2.0, 3.0],b:[4.0,5.0,6.0]}");
+        assertEquals(TensorType.Value.FLOAT, tensor.type().valueType());
+        assertEquals(TensorType.Value.DOUBLE, tensor.cellCast(TensorType.Value.DOUBLE).type().valueType());
+        assertEquals(TensorType.Value.FLOAT, tensor.cellCast(TensorType.Value.FLOAT).type().valueType());
+        assertEquals(tensor, tensor.cellCast(TensorType.Value.DOUBLE));
+    }
+
+}