问Behat3子上下文

EN

//behat.yml
default:
  suites:
    default:
      contexts: [FeatureContext, SubContext]

//FeatureContext.php
<?php

use Behat\Behat\Context\Context;
use Behat\Behat\Hook\Scope\BeforeScenarioScope;

class FeatureContext implements Context {
    private $subContext;

    /** @BeforeScenario */
    public function fetchContexts(BeforeScenarioScope $scope)
    {
        $environment = $scope->getEnvironment();

        $this->subContext = $environment->getContext('SubContext');
    }

    /** @When I do something on :foo */
    function IDoSomethingOnFoo($foo) {
        $this->subContext->doSomethingOnFoo($foo);
    }
}

//SubContext.php
<?php

use Behat\Behat\Context\Context;

class SubContext implements Context {

    function doSomethingOnFoo($foo) {
        //...
    }
}