[BT-4418] FaunaParser Long values

faunaJava/src/main/java/com/fauna/serialization/FaunaParser.java

@@ -7,6 +7,7 @@
 import static com.fauna.common.enums.FaunaTokenType.END_OBJECT;
 import static com.fauna.common.enums.FaunaTokenType.END_PAGE;
 import static com.fauna.common.enums.FaunaTokenType.END_REF;
+import static com.fauna.common.enums.FaunaTokenType.LONG;
 import static com.fauna.common.enums.FaunaTokenType.NONE;
 import static com.fauna.common.enums.FaunaTokenType.TIME;
 
@@ -133,8 +134,10 @@ private void handleStartObject() throws IOException {
                     case DOUBLE_TAG:
                         handleTaggedString(FaunaTokenType.DOUBLE);
                         break;
-                    case DOC_TAG:
                     case LONG_TAG:
+                        handleTaggedString(FaunaTokenType.LONG);
+                        break;
+                    case DOC_TAG:
                     case MOD_TAG:
                     case OBJECT_TAG:
                     case REF_TAG:
@@ -238,4 +241,13 @@ public Double getValueAsDouble() {
             throw new RuntimeException("Error getting the current token as Double", e);
         }
     }
+
+    public Long getValueAsLong() {
+        validateTaggedType(LONG);
+        try {
+            return Long.parseLong(taggedTokenValue);
+        } catch (NumberFormatException e) {
+            throw new RuntimeException("Error getting the current token as Long", e);
+        }
+    }
 }

faunaJava/src/test/java/com/fauna/serialization/FaunaParserTest.java

@@ -160,6 +160,25 @@ public void testGetValueAsDouble() throws IOException {
         assertThrows(RuntimeException.class, invalidReader::getValueAsDouble);
     }
 
+    @Test
+    public void testGetValueAsLong() throws IOException {
+        String s = "{\"@long\": \"123\"}";
+        InputStream inputStream = new ByteArrayInputStream(s.getBytes());
+        FaunaParser reader = new FaunaParser(inputStream);
+
+        List<Map.Entry<FaunaTokenType, Object>> expectedTokens = List.of(
+            Map.entry(FaunaTokenType.LONG, 123L)
+        );
+
+        assertReader(reader, expectedTokens);
+
+        String invalidJson = "{\"@long\": \"abc\"}";
+        InputStream invalidInputStream = new ByteArrayInputStream(invalidJson.getBytes());
+        FaunaParser invalidReader = new FaunaParser(invalidInputStream);
+
+        assertThrows(RuntimeException.class, invalidReader::getValueAsLong);
+    }
+
     private static void assertReader(FaunaParser reader,
         List<Map.Entry<FaunaTokenType, Object>> tokens) throws IOException {
         for (Map.Entry<FaunaTokenType, Object> entry : tokens) {
@@ -189,6 +208,9 @@ private static void assertReader(FaunaParser reader,
                 case DOUBLE:
                     assertEquals(entry.getValue(), reader.getValueAsDouble());
                     break;
+                case LONG:
+                    assertEquals(entry.getValue(), reader.getValueAsLong());
+                    break;
                 default:
                     assertNull(entry.getValue() == null);
                     break;