@Test
public void testGetRunningContainersExpectingTwoContainers() {
String container1 = "TEST_CONTAINER_ID1";
String container2 = "TEST_CONTAINER_ID2";
String imageName1 = "TEST_IMAGE_NAME1";
String imageName2 = "TEST_IMAGE_NAME2";
List<Container> containerIds =
new ArrayList<Container>() {
{
add(getContainer(container1, imageName1));
add(getContainer(container2, imageName2));
}
};
//
// Arrange
//
this.mockListCommand(containerIds);
//
// Act
//
DockerClient target = new DockerClient(dockerClientStub);
target.updateContainerState();
Set<String> result = target.getRunningContainers();
//
// Assert
//
assertTrue(result.contains(container1));
assertTrue(result.contains(container2));
}
@Test
public void testGetNotifiedAboutCurrentRunningContainers() {
String containerId = "TEST_CONTAINER_ID";
String imageName = "TEST_IMAGE_NAME";
List<Container> containerIds = Collections.singletonList(getContainer(containerId, imageName));
//
// Arrange
//
this.mockListCommand(containerIds);
ArgumentCaptor<List> containersCapture = ArgumentCaptor.forClass(List.class);
Consumer<List<String>> consumerMock = mock(Consumer.class);
//
// Act
//
DockerClient target = new DockerClient(dockerClientStub);
target.setDelegate(consumerMock);
target.updateContainerState();
//
// Assert
//
verify(consumerMock).accept(containersCapture.capture());
// Second call with both containers
assertEquals(imageName, containersCapture.getValue().get(0));
}
@Test
public void testGetNotifiedAboutNewRunningContainers() {
String container1 = "TEST_CONTAINER_ID1";
String container2 = "TEST_CONTAINER_ID2";
String imageName1 = "TEST_IMAGE_NAME1";
String imageName2 = "TEST_IMAGE_NAME2";
List<Container> firstResponse = Collections.singletonList(getContainer(container1, imageName1));
// at second call it will return a new container id (container2)
List<Container> secondResponse =
Lists.newArrayList(
getContainer(container1, imageName1), getContainer(container2, imageName2));
Consumer<List<String>> consumerMock = mock(Consumer.class);
this.mockListCommand(firstResponse, secondResponse);
ArgumentCaptor<List> containersCapture = ArgumentCaptor.forClass(List.class);
DockerClient target = new DockerClient(dockerClientStub);
target.setDelegate(consumerMock);
target.updateContainerState();
target.updateContainerState();
verify(consumerMock, times(2)).accept(containersCapture.capture());
assertEquals(imageName1, containersCapture.getAllValues().get(0).get(0));
// Second call with both containers
assertTrue(containersCapture.getAllValues().get(1).contains(imageName1));
assertTrue(containersCapture.getAllValues().get(1).contains(imageName2));
}