Blueprint Test Entities

Structural Test Entities

TestCase

The TestCase entity acts as a container for a list of child entities which are started sequentially.

- type: org.apache.brooklyn.test.framework.TestCase
  brooklyn.children:
  - type: org.apache.brooklyn.entity.database.mysql.MySqlNode
    ...
  - type: org.apache.brooklyn.test.framework.TestSensor
    ...

This can be used to enforce a strict ordering, for example ensuring a sensor has a certain value before attempting to invoke an effector.

Timeouts on child entities should be set relative to the completion of the preceding entity.

The ParallelTestCase entity can be added as a child to run a subset of entities in parallel as a single step.

ParallelTestCase

The ParallelTestCase entity acts as a container for a list of child entities which are started in parallel.

- type: org.apache.brooklyn.test.framework.ParallelTestCase
  brooklyn.children:
  - type: org.apache.brooklyn.entity.database.mysql.MySqlNode
    ...
  - type: org.apache.brooklyn.entity.webapp.ControlledDynamicWebAppCluster
    ...

This can be used to run a subset of entities in parallel as a single step when nested under a TestCase entity.

Timeouts on child entities should be set relative to the start of the ParallelTestCase.

LoopOverGroupMembersTestCase

The LoopOverGroupMembersTestCase entity is configured with a target group and a test specification. For each member of the targeted group, the test case will create a TargetableTestComponent entity from the supplied test specification and set the components target to be the group member.

- type: org.apache.brooklyn.test.framework.LoopOverGroupMembersTestCase
  target: $brooklyn:component("infrastructure").component("child", "DockerHosts")
  testSpec:
    $brooklyn:entitySpec:
      type: org.apache.brooklyn.test.framework.TestSensor
      ...

Parameters

  • target - group who’s members are to be tested, specified via DSL. For example, $brooklyn:component("tomcat"). See also the targetId parameter.
  • targetId - alternative to the target parameter which wraps the DSL component lookup requiring only the id be supplied. For example, tomcat. Please note, this must point to a group.
  • test.spec - The TargetableTestComponent to create for each child.

InfrastructureDeploymentTestCase

The InfrastructureDeploymentTestCase will first create and deploy an infrastructure from the infrastructure.deployment.spec config. It will then retrieve a deployment location by getting the value of the infrastructures infrastructure.deployment.location.sensor sensor. It will then create and deploy all entities from the infrastructure.deployment.spec config to the deployment location.

- type: org.apache.brooklyn.test.framework.InfrastructureDeploymentTestCase
  brooklyn.config:
    infrastructure.deployment.location.sensor: entity.dynamicLocation
    infrastructure.deployment.spec:
      $brooklyn:entitySpec:
        - type: docker-cloud-calico
          ...
    infrastructure.deployment.entity.specs:
      - $brooklyn:entitySpec:
          type: org.apache.brooklyn.entity.software.base.VanillaSoftwareProcess
          ...

Parameters

  • infrastructure.deployment.spec - the infrastructure to be deployed.
  • infrastructure.deployment.entity.specs - the entities to be deployed to the infrastructure
  • infrastructure.deployment.location.sensor - the name of the sensor on the infrastructure to retrieve the deployment location

Validation Test Entities

TestSensor

The TestSensor entity performs an assertion on a specified sensors value.

- type: org.apache.brooklyn.test.framework.TestSensor
  name: Check tomcat isUp
  target: $brooklyn:component("tomcat")
  sensor: service.isUp
  timeout: 10m
  assert:
  - equals: true

Parameters

  • target - entity whose sensor will be tested, specified via DSL. For example, $brooklyn:component("tomcat"). See also the targetId parameter.
  • targetId - alternative to the target parameter which wraps the DSL component lookup requiring only the id be supplied. For example, tomcat.
  • sensor - sensor to evaluate. For example service.isUp.
  • timeout - duration to wait on assertion to return a result. For example 10s, 10m, etc
  • assert - assertion to perform on the specified sensor value. See section on assertions below.
Tip: If the TestSensor is wrapped within a TestCase, ParallelTestCase or LoopOverGroupMembersTestCase that set the target, you don't need to specify the target, unless you want to test another entity.

TestEffector

The TestEffector entity invokes the specified effector on a target entity. If the result of the effector is a String, it will then perform assertions on the result.

- type: org.apache.brooklyn.test.framework.TestEffector
  name: Invoke Deploy Effector
  target: $brooklyn:component("tomcat")
  effector: deploy
  timeout: 5m
  params:
    url: http://search.maven.org/remotecontent?filepath=org/apache/brooklyn/example/brooklyn-example-hello-world-sql-webapp/0.8.0-incubating/brooklyn-example-hello-world-sql-webapp-0.8.0-incubating.war
    targetName: newcontext

Parameters

  • target - entity whose effector will be invoked, specified via DSL. For example, $brooklyn:component("tomcat"). See also the targetId parameter.
  • targetId - alternative to the target parameter which wraps the DSL component lookup requiring only the id be supplied. For example, tomcat.
  • timeout - duration to wait on the effector task to complete. For example 10s, 10m, etc
  • effector - effector to invoke, for example deploy.
  • params - parameters to pass to the effector, these will depend on the entity and effector being tested. The example above shows the url and targetName parameters being passed to Tomcats deploy effector.
  • assert - assertion to perform on the returned result. See section on assertions below.
Tip: If the TestEffector is wrapped within a TestCase, ParallelTestCase or LoopOverGroupMembersTestCase that set the target, you don't need to specify the target, unless you want to test another entity.

TestHttpCall

The TestHttpCall entity performs a HTTP GET on the specified URL and performs an assertion on the response.

- type: org.apache.brooklyn.test.framework.TestHttpCall
  name: Check HTTP Response Status Code
  url: $brooklyn:component("tomcat").attributeWhenReady("webapp.url")
  timeout: 60s
  applyAssertionTo: status
  assert:
  - isEqualTo: 200

Parameters

  • url - URL to perform GET request on, this can use DSL for example $brooklyn:component("tomcat").attributeWhenReady("webapp.url").
  • timeout - duration to wait on a HTTP response. For example 10s, 10m, etc
  • applyAssertionTo - The filed to apply the assertion to. For example status, body
  • assert - assertion to perform on the response. See section on assertions below.
Tip: If the TestHttpCall is wrapped within a TestCase, ParallelTestCase or LoopOverGroupMembersTestCase that set the target, you don't need to specify the target, unless you want to test another entity.

SimpleShellCommandTest

The SimpleShellCommandTest runs a command on the host of the target entity. The script is expected not to run indefinitely, but to return a result (process exit code), along with its standard out and error streams, which can then be tested using assertions. If no assertions are explicitly configured, the default is to assert a non-zero exit code.

Either a shell command may be provided in the YAML, or a URL for a script which will be executed.

- type: org.apache.brooklyn.test.framework.TestCase
  name: testcase1
  targetId: testprocess
  brooklyn.children:
    - type: org.apache.brooklyn.entity.webapp.tomcat.TomcatServer
      id: testprocess

    - type: org.apache.brooklyn.test.framework.SimpleShellCommandTest
      command: ps -ef
      assertStatus:
        equals: 0
      assertOut:
        contains: tomcat
      assertErr: 
        isEmpty: true

    - type: org.apache.brooklyn.test.framework.SimpleShellCommandTest
      downloadUrl: https://github.com/apache/brooklyn-docs/raw/master/guide/yaml/test/example_yaml/entities/script1.sh
      assertStatus:
        equals: 0
      assertOut: 
        equals: hello world
      assertErr: 
        isEmpty: true

Parameters

  • command - The shell command to execute. (This and downloadUrl are mutually exclusive.)
  • downloadUrl - URL for a script to download and execute. (This and command are mutually exclusive.)
  • scriptDir - if downloadUrl is used. The directory on the target host where downloaded scripts should be copied to.
  • runDir - the working directory where the command or script will be executed on the target host.
  • assertStatus - Assertions on the exit code of the command or script. See section on assertions below.
  • assertOut - Assertions on the standard output of the command as a String.
  • assertErr - Assertions on the standard error of the command as a String.
Tip: If the SimpleShellCommandTest is wrapped within a TestCase, ParallelTestCase or LoopOverGroupMembersTestCase that set the target, you don't need to specify the target, unless you want to test another entity.

Assertions

The following conditions are provided by those test entities above that include assertions

  • isNull - asserts that the actual value is null.
  • notNull - asserts that the actual value is NOT null.
  • isEqualTo - asserts that the actual value equals an expected value.
  • equalTo - a synonym for isEqualTo
  • equals - a synonym for isEqualTo
  • matches - asserts that the actual value matches a regex pattern, for example ".*hello.*".
  • contains - asserts that the actual value contains the supplied value
  • isEmpty - asserts that the actual value is an empty string
  • notEmpty - asserts that the actual value is a non empty string
  • hasTruthValue - asserts that the actual value has the expected interpretation as a boolean

Assertions may be provided as a simple map:

yaml assert: contains: 2 users matches: .*[\d]* days.*

If there is the need to make multiple assertions with the same key, the assertions can be specified as a list of such maps:

yaml assert: - contains: 2 users - contains: 2 days