org.hamcrest.core.IsNull.nullValue()方法的使用及代码示例

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中org.hamcrest.core.IsNull.nullValue()方法的一些代码示例，展示了IsNull.nullValue()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。IsNull.nullValue()方法的具体详情如下：
包路径：org.hamcrest.core.IsNull
类名称：IsNull
方法名：nullValue

IsNull.nullValue介绍

[英]Creates a matcher that matches if examined object is null.

For example:

assertThat(cheese, is(nullValue())

[中]创建一个匹配器，该匹配器在检查对象为null时匹配。
例如：

assertThat(cheese, is(nullValue())

代码示例

代码示例来源：origin: neo4j/neo4j

protected static Map<String, Object> deserializeMap( final String body ) throws JsonParseException
{
  Map<String, Object> result = JsonHelper.jsonToMap( body );
  assertThat( result, CoreMatchers.is( not( nullValue() ) ) );
  return result;
}

代码示例来源：origin: apache/kafka

@Test
public void allSerdesShouldSupportNull() {
  for (Class<?> cls : testData.keySet()) {
    try (Serde<?> serde = Serdes.serdeFrom(cls)) {
      assertThat("Should support null in " + cls.getSimpleName() + " serialization",
          serde.serializer().serialize(topic, null), nullValue());
      assertThat("Should support null in " + cls.getSimpleName() + " deserialization",
          serde.deserializer().deserialize(topic, null), nullValue());
    }
  }
}

代码示例来源：origin: hibernate/hibernate-orm

@Test
  public void testThatGetSecondLevelCacheStatisticsWhenSecondLevelCacheIsNotEnabledReturnsNull() {
    final SecondLevelCacheStatistics secondLevelCacheStatistics = statistics
        .getSecondLevelCacheStatistics( StringHelper.qualify( REGION_PREFIX, TRIVIAL_REGION_NAME ) );
    assertThat( secondLevelCacheStatistics, is( nullValue() ) );
  }
}

代码示例来源：origin: auth0/java-jwt

@Test
public void shouldGetNullArrayIfNullValue() throws Exception {
  JsonNode value = mapper.valueToTree(null);
  Claim claim = claimFromNode(value);
  assertThat(claim.asArray(String.class), is(nullValue()));
}

代码示例来源：origin: camunda/camunda-bpm-platform

@Test
public void shouldResolveCommentByTaskId() {
 // given
 testRule.deploy(CALLING_PROCESS);
 testRule.deploy(CALLED_PROCESS);
 ClockUtil.setCurrentTime(START_DATE);
 runtimeService.startProcessInstanceByKey(CALLING_PROCESS_KEY);
 String taskId = taskService.createTaskQuery().singleResult().getId();
 taskService.createComment(taskId, null, "aMessage");
 Comment comment = taskService.getTaskComments(taskId).get(0);
 // assume
 assertThat(comment.getRemovalTime(), nullValue());
 ClockUtil.setCurrentTime(END_DATE);
 // when
 taskService.complete(taskId);
 comment = taskService.getTaskComments(taskId).get(0);
 Date removalTime = addDays(END_DATE, 5);
 // then
 assertThat(comment.getRemovalTime(), is(removalTime));
}

代码示例来源：origin: neo4j/neo4j

@SuppressWarnings( "unchecked" )
private <T extends PropertyContainer> void makeSureAdditionsCanBeRead(
    Index<T> index, EntityCreator<T> entityCreator )
{
  String key = "name";
  String value = "Mattias";
  assertThat( index.get( key, value ).getSingle(), is( nullValue() ) );
  assertThat( index.get( key, value ), emptyIterable() );
  assertThat( index.query( key, "*" ), emptyIterable() );
  T entity1 = entityCreator.create();
  T entity2 = entityCreator.create();
  index.add( entity1, key, value );
  for ( int i = 0; i < 2; i++ )
  {
    assertThat( index.get( key, value ), Contains.contains( entity1 ) );
    assertThat( index.query( key, "*" ), Contains.contains( entity1 ) );
    assertThat( index.get( key, value ), Contains.contains( entity1 ) );
    restartTx();
  }
  index.add( entity2, key, value );
  assertThat( index.get( key, value ), Contains.contains( entity1, entity2 ) );
  restartTx();
  assertThat( index.get( key, value ), Contains.contains( entity1, entity2 ) );
  index.delete();
}

代码示例来源：origin: hibernate/hibernate-orm

@Test
public void testRecording() {
  TestListener listener = new TestListener();
  LogInspectionHelper.registerListener( listener, LOG );
  LOG.debug( "Hey coffee is ready!" );
  assertThat( listener.isCAlled, is( true ) );
  assertThat( listener.level, is( Level.DEBUG ) );
  assertThat( (String) listener.renderedMessage, is( "Hey coffee is ready!" ) );
  assertThat( listener.thrown, nullValue() );
  LogInspectionHelper.clearAllListeners( LOG );
}

代码示例来源：origin: auth0/java-jwt

@Test
public void shouldGetNullListIfNonArrayValue() throws Exception {
  JsonNode value = mapper.valueToTree(1);
  Claim claim = claimFromNode(value);
  assertThat(claim.asList(String.class), is(nullValue()));
}

代码示例来源：origin: camunda/camunda-bpm-platform

@Test
public void shouldResolveCommentByTaskIdAndWrongProcessInstanceId() {
 // given
 testRule.deploy(CALLING_PROCESS);
 testRule.deploy(CALLED_PROCESS);
 ClockUtil.setCurrentTime(START_DATE);
 runtimeService.startProcessInstanceByKey(CALLING_PROCESS_KEY);
 String taskId = taskService.createTaskQuery().singleResult().getId();
 taskService.createComment(taskId, "aNonExistentProcessInstanceId", "aMessage");
 Comment comment = taskService.getTaskComments(taskId).get(0);
 // assume
 assertThat(comment.getRemovalTime(), nullValue());
 ClockUtil.setCurrentTime(END_DATE);
 // when
 taskService.complete(taskId);
 comment = taskService.getTaskComments(taskId).get(0);
 Date removalTime = addDays(END_DATE, 5);
 // then
 assertThat(comment.getRemovalTime(), is(removalTime));
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldHandleColumnAsWithNull()
{
  assertThat( db.execute( "RETURN toLower(null) AS lower" ).<String>columnAs( "lower" ).next(), nullValue() );
}

代码示例来源：origin: PaNaVTEC/Clean-Contacts

private void assertThatResponseHasResult(InteractorResponse<List<Contact>> response) {
 assertThat(response.getError(), is(nullValue()));
 assertThat(response.getResult(), is(CONTACTS));
}

代码示例来源：origin: neo4j/neo4j

private static List<Map<String, Object>> deserializeList( final String body ) throws JsonParseException
{
  List<Map<String, Object>> result = JsonHelper.jsonToList( body );
  assertThat( result, CoreMatchers.is( not( nullValue() ) ) );
  return result;
}

代码示例来源：origin: neo4j/neo4j

@Test
public void shouldSerializeMapWithSimpleTypes() throws Exception
{
  MapRepresentation rep = new MapRepresentation( map( "nulls", null, "strings", "a string", "numbers", 42,
      "booleans", true ) );
  OutputFormat format = new OutputFormat( new JsonFormat(), new URI( "http://localhost/" ), null );
  String serializedMap = format.assemble( rep );
  Map<String, Object> map = JsonHelper.jsonToMap( serializedMap );
  assertThat( map.get( "nulls" ), is( nullValue() ) );
  assertThat( map.get( "strings" ), is( "a string" ) );
  assertThat( map.get( "numbers" ), is( 42 ) );
  assertThat( map.get( "booleans" ), is( true ) );
}

代码示例来源：origin: auth0/java-jwt

@Test
public void shouldGetNullStringIfNotStringValue() throws Exception {
  JsonNode objectValue = mapper.valueToTree(new Object());
  assertThat(claimFromNode(objectValue).asString(), is(nullValue()));
  JsonNode intValue = mapper.valueToTree(12345);
  assertThat(claimFromNode(intValue).asString(), is(nullValue()));
}

代码示例来源：origin: camunda/camunda-bpm-platform

@Test
public void shouldResolveByteArray_CreateAttachmentByTask() {
 // given
 testRule.deploy(CALLING_PROCESS);
 testRule.deploy(CALLED_PROCESS);
 ClockUtil.setCurrentTime(START_DATE);
 runtimeService.startProcessInstanceByKey(CALLING_PROCESS_KEY);
 String taskId = taskService.createTaskQuery().singleResult().getId();
 AttachmentEntity attachment = (AttachmentEntity) taskService.createAttachment(null, taskId, null, null, null, new ByteArrayInputStream("hello world".getBytes()));
 ByteArrayEntity byteArray = findByteArrayById(attachment.getContentId());
 // assume
 assertThat(byteArray.getRemovalTime(), nullValue());
 ClockUtil.setCurrentTime(END_DATE);
 // when
 taskService.complete(taskId);
 byteArray = findByteArrayById(attachment.getContentId());
 Date removalTime = addDays(END_DATE, 5);
 // then
 assertThat(byteArray.getRemovalTime(), is(removalTime));
}

代码示例来源：origin: hamcrest/JavaHamcrest

@Test public void
supportsStaticTyping() {
  requiresStringMatcher(nullValue(String.class));
  requiresStringMatcher(notNullValue(String.class));
}

代码示例来源：origin: PaNaVTEC/Clean-Contacts

private void assertThatResponseHasError(InteractorResponse<List<Contact>> result) {
  assertThat(result.getError(), is(notNullValue()));
  assertThat(result.getResult(), is(nullValue()));
 }
}

代码示例来源：origin: SonarSource/sonarqube

@Test
 public void nullNewValue() {
  GlobalPropertyChangeHandler.PropertyChange change = GlobalPropertyChangeHandler.PropertyChange.create("favourite.java.version", null);
  assertThat(change.getNewValue(), nullValue());
  assertThat(change.toString(), is("[key=favourite.java.version, newValue=null]"));
 }
}

代码示例来源：origin: auth0/java-jwt

@Test
public void shouldGetNullMapIfNullValue() throws Exception {
  JsonNode value = mapper.valueToTree(null);
  Claim claim = claimFromNode(value);
  assertThat(claim.asMap(), is(nullValue()));
}

代码示例来源：origin: camunda/camunda-bpm-platform

@Test
public void shouldResolveHistoricDetailByFormProperty() {
 // given
 DeploymentWithDefinitions deployment = testRule.deploy(CALLING_PROCESS);
 testRule.deploy(CALLED_PROCESS);
 String processDefinitionId = deployment.getDeployedProcessDefinitions().get(0).getId();
 Map<String, Object> properties = new HashMap<>();
 properties.put("aFormProperty", "aFormPropertyValue");
 ClockUtil.setCurrentTime(START_DATE);
 formService.submitStartForm(processDefinitionId, properties);
 HistoricDetail historicDetail = historyService.createHistoricDetailQuery().formFields().singleResult();
 // assume
 assertThat(historicDetail.getRemovalTime(), nullValue());
 ClockUtil.setCurrentTime(END_DATE);
 String taskId = historyService.createHistoricTaskInstanceQuery().singleResult().getId();
 // when
 taskService.complete(taskId);
 historicDetail = historyService.createHistoricDetailQuery().formFields().singleResult();
 Date removalTime = addDays(END_DATE, 5);
 // then
 assertThat(historicDetail.getRemovalTime(), is(removalTime));
}

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