本文整理了Java中org.hamcrest.core.Is.is()方法的一些代码示例，展示了Is.is()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。Is.is()方法的具体详情如下：
包路径：org.hamcrest.core.Is
类名称：Is
方法名：is

Is.is介绍

[英]A shortcut to the frequently used is(instanceOf(SomeClass.class)).

For example:

assertThat(cheese, is(Cheddar.class))

instead of:

assertThat(cheese, is(instanceOf(Cheddar.class)))

[中]常用is(instanceOf(SomeClass.class))的快捷方式。
例如：

assertThat(cheese, is(Cheddar.class))

而不是：

assertThat(cheese, is(instanceOf(Cheddar.class)))

代码示例

代码示例来源：origin: spring-projects/spring-framework

@Test
public void componentTwoConstructorsNoHint() {
  this.context = new AnnotationConfigApplicationContext(BaseConfiguration.class,
      TwoConstructorsComponent.class);
  assertThat(this.context.getBean(TwoConstructorsComponent.class).name, is("fallback"));
}

代码示例来源：origin: LMAX-Exchange/disruptor

private static void assertLastEvent(int[] event, long sequence, DummyEventHandler<int[]>... eh1)
{
  for (DummyEventHandler<int[]> eh : eh1)
  {
    assertThat(eh.lastEvent, is(event));
    assertThat(eh.lastSequence, is(sequence));
  }
}

代码示例来源：origin: spring-projects/spring-framework

@Test // SPR-14498
public void assertValueWithNumberConversionAndMatcher() throws Exception {
  new JsonPathExpectationsHelper("$.num").assertValue(CONTENT, is(5.0), Double.class);
}

代码示例来源：origin: spring-projects/spring-framework

/**
 * Test that a call to get with a Callable concurrently properly synchronize the
 * invocations.
 */
@Test
public void testCacheGetSynchronized() throws InterruptedException {
  T cache = getCache();
  final AtomicInteger counter = new AtomicInteger();
  final List<Object> results = new CopyOnWriteArrayList<>();
  final CountDownLatch latch = new CountDownLatch(10);
  String key = createRandomKey();
  Runnable run = () -> {
    try {
      Integer value = cache.get(key, () -> {
        Thread.sleep(50); // make sure the thread will overlap
        return counter.incrementAndGet();
      });
      results.add(value);
    }
    finally {
      latch.countDown();
    }
  };
  for (int i = 0; i < 10; i++) {
    new Thread(run).start();
  }
  latch.await();
  assertEquals(10, results.size());
  results.forEach(r -> assertThat(r, is(1))); // Only one method got invoked
}

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

@Test
public void testMapKeyExpressionInWhere() {
  doInHibernate( this::sessionFactory, s -> {
    // JPA form
    Query query = s.createQuery( "select te from TestEntity te join te.values v where ?1 in (key(v)) " );
    query.setParameter( 1, keyValue );
    assertThat( query.list().size(), is( 1 ) );
    // Hibernate additional form
    query = s.createQuery( "select te from TestEntity te where ?1 in (key(te.values))" );
    query.setParameter( 1, keyValue );
    assertThat( query.list().size(), is( 1 ) );
    // Test key property dereference
    query = s.createQuery( "select te from TestEntity te join te.values v where key(v).name in :names" );
    query.setParameterList( "names", Arrays.asList( keyValue.name ) );
    assertThat( query.list().size(), is( 1 ) );
  } );
}

代码示例来源：origin: web3j/web3j

private void confirmBalance(
    String address, String contractAddress, BigInteger expected) throws Exception {
  Function function = balanceOf(address);
  String responseValue = callSmartContractFunction(function, contractAddress);
  List<Type> response = FunctionReturnDecoder.decode(
      responseValue, function.getOutputParameters());
  assertThat(response.size(), is(1));
  assertThat(response.get(0), equalTo(new Uint256(expected)));
}

代码示例来源：origin: neo4j/neo4j

@Test
void shouldFindAllArchives() throws Exception
{
  RotatingFileOutputStreamSupplier supplier = new RotatingFileOutputStreamSupplier( fileSystem, logFile, 10, 0, 2,
      DIRECT_EXECUTOR );
  write( supplier, "A string longer than 10 bytes" );
  write( supplier, "A string longer than 10 bytes" );
  assertThat( fileSystem.fileExists( logFile ), is( true ) );
  assertThat( fileSystem.fileExists( archiveLogFile1 ), is( true ) );
  assertThat( fileSystem.fileExists( archiveLogFile2 ), is( false ) );
  List<File> allArchives = getAllArchives( fileSystem, logFile );
  assertThat( allArchives.size(), is( 1 ) );
  assertThat( allArchives, hasItem( archiveLogFile1 ) );
}

代码示例来源：origin: real-logic/aeron

@Test
public void shouldSendMultipleSetupFramesOnChannelWhenTimeoutWithoutStatusMessage()
{
  sender.doWork();
  assertThat(receivedFrames.size(), is(1));
  currentTimestamp += Configuration.PUBLICATION_SETUP_TIMEOUT_NS - 1;
  sender.doWork();
  currentTimestamp += 10;
  sender.doWork();
  assertThat(receivedFrames.size(), is(2));
}

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

@Test
@TestForIssue(jiraKey = "HHH-11651")
public void testUnwrappingAbstractMultiTenantConnectionProvider() {
  final MultiTenantConnectionProvider multiTenantConnectionProvider = serviceRegistry.getService(
      MultiTenantConnectionProvider.class );
  final AbstractMultiTenantConnectionProvider connectionProvider = multiTenantConnectionProvider.unwrap(
      AbstractMultiTenantConnectionProvider.class );
  assertThat( connectionProvider, is( notNullValue() ) );
}

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

private HistoricProcessInstance getHistoricProcessInstanceWithAssertion(ProcessDefinition processDefinition) {
 List<HistoricProcessInstance> entities = processEngineRule.getHistoryService().createHistoricProcessInstanceQuery()
   .processDefinitionId(processDefinition.getId()).list();
 assertThat(entities, is(notNullValue()));
 assertThat(entities.size(), is(1));
 return entities.get(0);
}

代码示例来源：origin: mulesoft/mule

@Test
public void findDomainApplicationsWillNonExistentDomainReturnsEmptyCollection() {
 Collection<Application> domainApplications = deploymentService.findDomainApplications("");
 assertThat(domainApplications, notNullValue());
 assertThat(domainApplications.isEmpty(), is(true));
}

代码示例来源：origin: hamcrest/JavaHamcrest

@Test public void
supportsMixedTypes() {
  final Matcher<SampleSubClass> matcher = allOf(
      equalTo(new SampleBaseClass("bad")),
      is(notNullValue()),
      equalTo(new SampleBaseClass("good")),
      equalTo(new SampleSubClass("ugly")));
  
  assertDoesNotMatch("didn't fail last sub-matcher", matcher, new SampleSubClass("good"));
}

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

@Override
 public void execute(DelegateExecution execution) throws Exception {
  assertThat(execution.getVariableLocal("targetOrderId"),is(notNullValue()));
 }
}

代码示例来源：origin: neo4j/neo4j

private void assertLogOccurred( Level level, String message )
{
  ArrayList<LoggingEvent> events = getLoggingEvents();
  assertThat( events, hasSize( 1 ) );
  LoggingEvent event = events.get( 0 );
  assertThat( event.getLoggerName(), is( getClass().getName() ) );
  assertThat( event.getLevel(), is( level ) );
  assertThat( event.getMessage(), is( message ) );
}

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

@Test
public void testRestrictionsOnComponentTypes() {
  doInHibernate( this::sessionFactory, session -> {
    session.enableFilter( "statusFilter" ).setParameter( "status", "active" );
    final Criteria query = session.createCriteria( Student.class );
    query.add( Restrictions.eq( "id", STUDENT_ID ) );
    query.add( Restrictions.eq( "address", new Address( "London", "Lollard St" ) ) );
    query.add( Restrictions.eq( "name", "dre" ) );
    final List list = query.list();
    assertThat( list.size(), is( 1 ) );
  });
}

代码示例来源：origin: web3j/web3j

private void confirmAllowance(String owner, String spender, String contractAddress,
                  BigInteger expected) throws Exception {
  Function function = allowance(owner, spender);
  String responseValue = callSmartContractFunction(function, contractAddress);
  List<Type> response = FunctionReturnDecoder.decode(
      responseValue, function.getOutputParameters());
  assertThat(response.size(), is(function.getOutputParameters().size()));
  assertThat(response.get(0), equalTo(new Uint256(expected)));
}

代码示例来源：origin: spring-projects/spring-framework

@Test
public void componentSingleConstructor() {
  this.context = new AnnotationConfigApplicationContext(BaseConfiguration.class,
      SingleConstructorComponent.class);
  assertThat(this.context.getBean(SingleConstructorComponent.class).autowiredName, is("foo"));
}

代码示例来源：origin: google/agera

@Test
public void shouldAddByteArrayColumnForInsert() {
 final byte[] value = "value".getBytes();
 assertThat(sqlInsertRequest()
     .table(TABLE)
     .column(COLUMN, value)
     .compile().contentValues.getAsByteArray(COLUMN),
   is(value));
}

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

@Test
@TestForIssue( jiraKey = "HHH-11651")
public void testUnwrappingConnectionProvider() {
  final MultiTenantConnectionProvider multiTenantConnectionProvider = serviceRegistry.getService(
      MultiTenantConnectionProvider.class );
  final ConnectionProvider connectionProvider = multiTenantConnectionProvider.unwrap( ConnectionProvider.class );
  assertThat( connectionProvider, is( notNullValue() ) );
}

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

@Test
public void shouldPointToItself() {
 // given
 testRule.deploy(CALLED_PROCESS);
 // when
 ProcessInstance processInstance = runtimeService.startProcessInstanceByKey(CALLED_PROCESS_KEY);
 // assume
 assertThat(processInstance.getRootProcessInstanceId(), notNullValue());
 // then
 assertThat(processInstance.getRootProcessInstanceId(), is(processInstance.getProcessInstanceId()));
}