Prepping for #5242 (#5248)

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/databind/ser/jdk/UUIDSerializationTest.java

@@ -1,6 +1,5 @@
 package com.fasterxml.jackson.databind.ser.jdk;
 
-import java.io.IOException;
 import java.util.UUID;
 
 import org.junit.jupiter.api.Test;
@@ -35,7 +34,7 @@ static class UUIDWrapperBinary {
 
     // Verify that efficient UUID codec won't mess things up:
     @Test
-    public void testBasicUUIDs() throws IOException
+    public void testBasicUUIDs() throws Exception
     {
         // first, couple of generated UUIDs:
         for (String value : new String[] {
@@ -104,5 +103,4 @@ public void testTreeConversion() throws Exception
         Object ob = MAPPER.convertValue(nullUUID, Object.class);
         assertEquals(String.class, ob.getClass());
     }
-
 }

src/test/java/com/fasterxml/jackson/databind/ser/jdk/VectorsAsBinarySerTest.java

@@ -0,0 +1,46 @@
+package com.fasterxml.jackson.databind.ser.jdk;
+
+import org.junit.jupiter.api.Test;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * Tests for serialization (and deserialization) of {@code float[]}
+ * as "packed binary" data, as per [databind#5242].
+ */
+public class VectorsAsBinarySerTest extends DatabindTestUtil
+{
+    private final static float[] FLOAT_VECTOR = new float[] { 1.0f, 0.5f, -1.25f };
+    private final static String FLOAT_VECTOR_STR = "[1.0,0.5,-1.25]";
+    
+    private final static double[] DOUBLE_VECTOR = new double[] { -1.0, 1.5, 0.0125 };
+    private final static String DOUBLE_VECTOR_STR = "[-1.0,1.5,0.0125]";
+
+    private final ObjectMapper MAPPER = sharedMapper();
+
+    // // // Float Vector tests
+    
+    @Test
+    public void defaultFloatVectorSerialization() throws Exception {
+        String json = MAPPER.writeValueAsString(FLOAT_VECTOR);
+        assertEquals(FLOAT_VECTOR_STR, json);
+
+        float[] result = MAPPER.readValue(json, float[].class);
+        assertArrayEquals(FLOAT_VECTOR, result);
+    }
+
+    // // // Double Vector tests
+    
+    @Test
+    public void defaultDoubleVectorSerialization() throws Exception {
+        String json = MAPPER.writeValueAsString(DOUBLE_VECTOR);
+        assertEquals(DOUBLE_VECTOR_STR, json);
+
+        double[] result = MAPPER.readValue(json, double[].class);
+        assertArrayEquals(DOUBLE_VECTOR, result);
+    }
+}