Method cleanup

test/tools/spec-runner/context.js:117–136

    this.appliedFailPoints = [];

    const cleanup = err => {
      if (Array.isArray(err)) {
        err = undefined;
      }

      if (!context.testClient) {
        if (err) throw err;
        return;
      }

      // clean up state
      context.commandEvents = [];
      context.sdamEvents = [];
      context.cmapEvents = [];
      context.threads.clear();

      const client = context.testClient;
      context.testClient = undefined;
      return err ? client.close().then(() => Promise.reject(err)) : client.close();
    };

    return Promise.all(cleanupPromises).then(cleanup, cleanup);
  }