private static List createExecutions()

in junit-platform-testkit/src/main/java/org/junit/platform/testkit/engine/Executions.java [253:300]
34 lines of code
6 McCabe index (conditional complexity)

	private static List<Execution> createExecutions(List<Event> events) {
		List<Execution> executions = new ArrayList<>();
		Map<TestDescriptor, Instant> executionStarts = new HashMap<>();

		for (Event event : events) {
			switch (event.getType()) {
				case STARTED: {
					executionStarts.put(event.getTestDescriptor(), event.getTimestamp());
					break;
				}
				case SKIPPED: {
					// Based on the Javadoc for EngineExecutionListener.executionSkipped(...),
					// a skipped descriptor must never be reported as started or finished,
					// but just in case a TestEngine does not adhere to that contract, we
					// make an attempt to remove any tracked "started" event.
					executionStarts.remove(event.getTestDescriptor());

					// Use the same timestamp for both the start and end Instant values.
					Instant timestamp = event.getTimestamp();

					Execution skippedEvent = Execution.skipped(event.getTestDescriptor(), timestamp, timestamp,
						event.getRequiredPayload(String.class));
					executions.add(skippedEvent);
					break;
				}
				case FINISHED: {
					Instant startInstant = executionStarts.remove(event.getTestDescriptor());
					Instant endInstant = event.getTimestamp();

					// If "started" events have already been filtered out, it is no
					// longer possible to create a legitimate Execution for the current
					// descriptor. So we effectively ignore it in that case.
					if (startInstant != null) {
						Execution finishedEvent = Execution.finished(event.getTestDescriptor(), startInstant,
							endInstant, event.getRequiredPayload(TestExecutionResult.class));
						executions.add(finishedEvent);
					}
					break;
				}
				default: {
					// Ignore other events
					break;
				}
			}
		}

		return executions;
	}