Module org.junit.platform.launcher
Package org.junit.platform.launcher

Class TestPlan

java.lang.Object
org.junit.platform.launcher.TestPlan
@API(status=STABLE,
     since="1.0")
public class TestPlan
extends Object
TestPlan describes the tree of tests and containers as discovered by a Launcher.

Tests and containers are represented by TestIdentifier instances. The complete set of identifiers comprises a tree-like structure. However, each identifier only stores the unique ID of its parent. This class provides a number of helpful methods to retrieve the parent, children, and descendants of an identifier.

While the contained instances of TestIdentifier are immutable, instances of this class contain mutable state. For example, when a dynamic test is registered at runtime, it is added to the original test plan and reported to TestExecutionListener implementations.

This class is not intended to be extended by clients.

Since:
1.0
See Also:
Launcher, TestExecutionListener

  • Constructor Details

  • Method Details

    • from

      @API(status=INTERNAL, since="1.0") public static TestPlan from​(Collection<TestDescriptor> engineDescriptors)
      Construct a new TestPlan from the supplied collection of TestDescriptors.

      Each supplied TestDescriptor is expected to be a descriptor for a TestEngine.

      Parameters:
      engineDescriptors - the engine test descriptors from which the test plan should be created; never null
      Returns:
      a new test plan

    • add

      @Deprecated @API(status=DEPRECATED, since="1.4") public void add​(TestIdentifier testIdentifier)
      Deprecated.
      Please discontinue use of this method. A future version of the JUnit Platform will ignore this call and eventually even throw an exception.
      Add the supplied TestIdentifier to this test plan.
      Parameters:
      testIdentifier - the identifier to add; never null

    • getRoots

      public Set<TestIdentifier> getRoots()
      Get the root TestIdentifiers for this test plan.
      Returns:
      an unmodifiable set of the root identifiers

    • getParent

      public Optional<TestIdentifier> getParent​(TestIdentifier child)
      Get the parent of the supplied TestIdentifier.
      Parameters:
      child - the identifier to look up the parent for; never null
      Returns:
      an Optional containing the parent, if present

    • getChildren

      public Set<TestIdentifier> getChildren​(TestIdentifier parent)
      Get the children of the supplied TestIdentifier.
      Parameters:
      parent - the identifier to look up the children for; never null
      Returns:
      an unmodifiable set of the parent's children, potentially empty
      See Also:
      getChildren(String)

    • getChildren

      public Set<TestIdentifier> getChildren​(String parentId)
      Get the children of the supplied unique ID.
      Parameters:
      parentId - the unique ID to look up the children for; never null or blank
      Returns:
      an unmodifiable set of the parent's children, potentially empty
      See Also:
      getChildren(TestIdentifier)

    • getTestIdentifier

      public TestIdentifier getTestIdentifier​(String uniqueId) throws PreconditionViolationException
      Get the TestIdentifier with the supplied unique ID.
      Parameters:
      uniqueId - the unique ID to look up the identifier for; never null or blank
      Returns:
      the identifier with the supplied unique ID; never null
      Throws:
      PreconditionViolationException - if no TestIdentifier with the supplied unique ID is present in this test plan

    • countTestIdentifiers

      public long countTestIdentifiers​(Predicate<? super TestIdentifier> predicate)
      Count all TestIdentifiers that satisfy the given predicate.
      Parameters:
      predicate - a predicate which returns true for identifiers to be counted; never null
      Returns:
      the number of identifiers that satisfy the supplied predicate

    • getDescendants

      public Set<TestIdentifier> getDescendants​(TestIdentifier parent)
      Get all descendants of the supplied TestIdentifier (i.e., all of its children and their children, recursively).
      Parameters:
      parent - the identifier to look up the descendants for; never null
      Returns:
      an unmodifiable set of the parent's descendants, potentially empty

    • containsTests

      public boolean containsTests()
      Return whether this test plan contains any tests.

      A test plan contains tests, if at least one of the contained engine descriptors contains tests.

      Returns:
      true if this test plan contains tests
      See Also:
      TestDescriptor.containsTests(TestDescriptor)