module definition-test {
  namespace "urn:definition-test";
  prefix sample;

  typedef topology-ref {
    type instance-identifier;
  }

  container binary-container {
    leaf binary-data {
      type binary;
      default "SGVsbG8gdGVzdCE=";
    }
  }

  container union-container {
    leaf testUnion1 {
      type union {
        type int32;
        type string;
      }
      default 5;
    }

    leaf testUnion2 {
      type union {
        type string;
        type boolean;
      }
      default false;
    }

    leaf testUnion3 {
      type union {
        type int32;
        type boolean;
      }
      default false;
    }

    leaf testBoolean {
      type boolean;
      default true;
    }
  }

  container number-container {
    leaf testInteger {
      type int32;
      default 42;
    }

    leaf testUnsignedInteger {
      type uint16;
      default 100;
    }

    leaf testDecimal {
      type decimal64 {
        fraction-digits 2;
      }
      default 3.14;
    }

    leaf testDouble {
      type decimal64 {
        fraction-digits 11;
      }
      default 3.14159265359;
    }

    leaf testInt64 {
      type int64;
      default 42;
    }

    leaf testUint64 {
      type uint64;
      default 42;
    }
  }

  container enum-container {
    leaf status {
      type enumeration {
        enum up {
          value 1;
        }
        enum down {
          value 2;
        }
      }
      default "up";
    }
  }

  container network-container {
    leaf network-ref {
      type topology-ref;
      default "/network/nodes[node-id='node1']";
    }
  }
}
 

@Test
public void testUnionTypes() throws IOException {
    final var module = context.findModule("definition-test").orElseThrow();
    final var generator = new DefinitionGenerator();
    final var jsonObject = generator.convertToSchemas(module, context, new DefinitionNames(), true);
    assertNotNull(jsonObject);

    final var properties = jsonObject.get("definition-test_config_union-container").properties();
    assertEquals("5", properties.get("testUnion1").get("default").asText());
    assertEquals("string", properties.get("testUnion1").get("type").asText());
    assertEquals("Some testUnion1", properties.get("testUnion1").get("example").asText());
    assertEquals("false", properties.get("testUnion2").get("default").asText());
    assertEquals("string", properties.get("testUnion2").get("type").asText());
    assertEquals("Some testUnion2", properties.get("testUnion2").get("example").asText());
    assertEquals("number", properties.get("testUnion3").get("type").asText());
    assertEquals("0", properties.get("testUnion3").get("example").asText());
    assertEquals("false", properties.get("testUnion3").get("default").asText());
}
 

java.lang.NumberFormatException: For input string: "false"
	at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)	at java.base/java.lang.Long.parseLong(Long.java:711)	at java.base/java.lang.Long.valueOf(Long.java:1159)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.lambda$processUnionType$17(DefinitionGenerator.java:889)	at java.base/java.util.Optional.ifPresent(Optional.java:178)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processUnionType(DefinitionGenerator.java:889)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processTypeDef(DefinitionGenerator.java:625)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processLeafNode(DefinitionGenerator.java:564)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processChildNode(DefinitionGenerator.java:492)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processChildren(DefinitionGenerator.java:442)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processDataNodeContainer(DefinitionGenerator.java:403)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.processContainersAndLists(DefinitionGenerator.java:263)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.convertToSchemas(DefinitionGenerator.java:150)	at org.opendaylight.restconf.openapi.impl.DefinitionGenerator.convertToSchemas(DefinitionGenerator.java:167) 

leaf testUnion3 {
  type union {
    type int32;
    type boolean;
  }
  default false;
}