1 files changed, 54 insertions, 0 deletions
diff --git a/vespajlib/src/test/java/com/yahoo/tensor/serialization/JsonFormatTestCase.java b/vespajlib/src/test/java/com/yahoo/tensor/serialization/JsonFormatTestCase.java
index 7c7391ff895..8de85c7a0b7 100644
--- a/vespajlib/src/test/java/com/yahoo/tensor/serialization/JsonFormatTestCase.java
+++ b/vespajlib/src/test/java/com/yahoo/tensor/serialization/JsonFormatTestCase.java
@@ -169,6 +169,60 @@ public class JsonFormatTestCase {
     }
 
     @Test
+    public void testDenseInt8Tensor() {
+        Tensor.Builder builder = Tensor.Builder.of(TensorType.fromSpec("tensor<int8>(x[2],y[2])"));
+        builder.cell().label("x", 0).label("y", 0).value(2.0);
+        builder.cell().label("x", 0).label("y", 1).value(3.0);
+        builder.cell().label("x", 1).label("y", 0).value(5.0);
+        builder.cell().label("x", 1).label("y", 1).value(7.0);
+        Tensor tensor = builder.build();
+
+        String shortJson = """
+                {
+                  "type":"tensor<int8>(x[2],y[2])",
+                  "values":[[2,3],[5,7]]
+                }
+                """;
+        byte[] shortEncoded = JsonFormat.encode(tensor, true, false);
+        assertEqualJson(shortJson, new String(shortEncoded, StandardCharsets.UTF_8));
+        assertEquals(tensor, JsonFormat.decode(tensor.type(), shortEncoded));
+
+        String longJson = """
+                {
+                  "type":"tensor<int8>(x[2],y[2])",
+                  "cells":[
+                    {"address":{"x":"0","y":"0"},"value":2},
+                    {"address":{"x":"0","y":"1"},"value":3},
+                    {"address":{"x":"1","y":"0"},"value":5},
+                    {"address":{"x":"1","y":"1"},"value":7}
+                  ]
+                }
+                """;
+        byte[] longEncoded = JsonFormat.encode(tensor, false, false);
+        assertEqualJson(longJson, new String(longEncoded, StandardCharsets.UTF_8));
+        assertEquals(tensor, JsonFormat.decode(tensor.type(), longEncoded));
+
+        String shortDirectJson = """
+                [[2, 3], [5, 7]]
+                """;
+        byte[] shortDirectEncoded = JsonFormat.encode(tensor, true, true);
+        assertEqualJson(shortDirectJson, new String(shortDirectEncoded, StandardCharsets.UTF_8));
+        assertEquals(tensor, JsonFormat.decode(tensor.type(), shortDirectEncoded));
+
+        String longDirectJson = """
+                [
+                    {"address":{"x":"0","y":"0"},"value":2},
+                    {"address":{"x":"0","y":"1"},"value":3},
+                    {"address":{"x":"1","y":"0"},"value":5},
+                    {"address":{"x":"1","y":"1"},"value":7}
+                ]
+                """;
+        byte[] longDirectEncoded = JsonFormat.encode(tensor, false, true);
+        assertEqualJson(longDirectJson, new String(longDirectEncoded, StandardCharsets.UTF_8));
+        assertEquals(tensor, JsonFormat.decode(tensor.type(), longDirectEncoded));
+    }
+
+    @Test
     public void testMixedTensor() {
         Tensor.Builder builder = Tensor.Builder.of(TensorType.fromSpec("tensor(x{},y[2])"));
         builder.cell().label("x", "a").label("y", 0).value(2.0);