added back some enums

gremlin-util/src/test/java/org/apache/tinkerpop/gremlin/structure/io/AbstractTypedCompatibilityTest.java

@@ -287,6 +287,19 @@ public void shouldReadWriteNegativeInfinityDouble() throws Exception {
         assertEquals(resource, recycled);
     }
 
+    @Test
+    public void shouldReadWriteNegativeZeroDouble() throws Exception {
+        final String resourceName = "neg-zero-double";
+
+        final Double resource = findModelEntryObject(resourceName);
+        final Double fromStatic = read(readFromResource(resourceName), Double.class);
+        final Double recycled = read(write(fromStatic, Double.class, resourceName), Double.class);
+        assertNotSame(fromStatic, recycled);
+        assertEquals(fromStatic, recycled);
+        assertEquals(resource, fromStatic);
+        assertEquals(resource, recycled);
+    }
+
     @Test
     public void shouldReadWriteZeroDuration() throws Exception {
         final String resourceName = "zero-duration";
@@ -433,6 +446,19 @@ public void shouldReadWriteNegativeInfinityFloat() throws Exception {
         assertEquals(resource, recycled);
     }
 
+    @Test
+    public void shouldReadWriteNegativeZeroFloat() throws Exception {
+        final String resourceName = "neg-zero-float";
+
+        final Float resource = findModelEntryObject(resourceName);
+        final Float fromStatic = read(readFromResource(resourceName), Float.class);
+        final Float recycled = read(write(fromStatic, Float.class, resourceName), Float.class);
+        assertNotSame(fromStatic, recycled);
+        assertEquals(fromStatic, recycled);
+        assertEquals(resource, fromStatic);
+        assertEquals(resource, recycled);
+    }
+
     @Test
     public void shouldReadWriteMaxInteger() throws Exception {
         final String resourceName = "max-int";
@@ -827,4 +853,29 @@ public void shouldReadWriteSetVertexProperty() throws Exception {
         assertVertexProperty(resource, recycled);
         assertVertexProperty(resource, fromStatic);
     }
+
+    @Test
+    public void shouldReadWriteIdT() throws Exception {
+        final String resourceName = "id-t";
+
+        final T resource = findModelEntryObject(resourceName);
+        final T fromStatic = read(readFromResource(resourceName), T.class);
+        final T recycled = read(write(fromStatic, T.class, resourceName), T.class);
+        assertEquals(fromStatic, recycled);
+        assertEquals(resource, fromStatic);
+        assertEquals(resource, recycled);
+    }
+
+    @Test
+    public void shouldReadWriteOutDirection() throws Exception {
+        final String resourceName = "out-direction";
+
+        final Direction resource = findModelEntryObject(resourceName);
+        final Direction fromStatic = read(readFromResource(resourceName), Direction.class);
+        final Direction recycled = read(write(fromStatic, Direction.class, resourceName), Direction.class);
+        assertEquals(fromStatic, recycled);
+        assertEquals(resource, fromStatic);
+        assertEquals(resource, recycled);
+    }
+
 }

gremlin-util/src/test/java/org/apache/tinkerpop/gremlin/structure/io/Model.java

@@ -119,6 +119,7 @@ private Model() {
         addCoreEntry(Double.NaN, "nan-double");
         addCoreEntry(Double.POSITIVE_INFINITY, "pos-inf-double");
         addCoreEntry(Double.NEGATIVE_INFINITY, "neg-inf-double");
+        addCoreEntry(-0.0, "neg-zero-double");
 
         addCoreEntry(Float.MAX_VALUE, "max-float");
         addCoreEntry(Float.MIN_VALUE, "min-float");
@@ -127,6 +128,7 @@ private Model() {
         addCoreEntry(Float.NaN, "nan-float");
         addCoreEntry(Float.POSITIVE_INFINITY, "pos-inf-float");
         addCoreEntry(Float.NEGATIVE_INFINITY, "neg-inf-float");
+        addCoreEntry(-0.0f, "neg-zero-float");
 
         addCoreEntry(Integer.MAX_VALUE, "max-int");
         addCoreEntry(Integer.MIN_VALUE, "min-int");
@@ -205,6 +207,9 @@ private Model() {
 
         addExtendedEntry(Short.MIN_VALUE, "min-short", "");
         addExtendedEntry(Short.MAX_VALUE, "max-short", "");
+
+        addGraphProcessEntry(Direction.OUT, "out-direction", "");
+        addGraphProcessEntry(T.id, "id-t", "");
     }
 
     public static Model instance() {