Function treeProcessor

packages/jest-jasmine2/src/treeProcessor.ts:45–88

(options: Options)

}

export default function treeProcessor(options: Options): void {
  const {nodeComplete, nodeStart, queueRunnerFactory, runnableIds, tree} =
    options;

  function isEnabled(node: TreeNode, parentEnabled: boolean) {
    return parentEnabled || runnableIds.includes(node.id);
  }

  function getNodeHandler(node: TreeNode, parentEnabled: boolean) {
    const enabled = isEnabled(node, parentEnabled);
    return node.children
      ? getNodeWithChildrenHandler(node, enabled)
      : getNodeWithoutChildrenHandler(node, enabled);
  }

  function getNodeWithChildrenHandler(node: TreeNode, enabled: boolean) {
    return async function fn(done: (error?: unknown) => void = noop) {
      nodeStart(node);
      await queueRunnerFactory({
        onException: (error: Error) => node.onException(error),
        queueableFns: wrapChildren(node, enabled),
        userContext: node.sharedUserContext(),
      });
      nodeComplete(node);
      done();
    };
  }

  function wrapChildren(node: TreeNode, enabled: boolean) {
    if (!node.children) {
      throw new Error('`node.children` is not defined.');
    }
    const children = node.children.map(child => ({
      fn: getNodeHandler(child, enabled),
    }));
    if (hasNoEnabledTest(node)) {
      return children;
    }
    return [...node.beforeAllFns, ...children, ...node.afterAllFns];
  }

  const treeHandler = getNodeHandler(tree, false);
  return treeHandler();
}