Data-Driven Testing

Use Each.sequential() and Each.parallel() to build action subtrees from Iterable or Stream inputs.

import java.util.List;
import org.paramixel.api.action.Each;
import static org.paramixel.api.action.Sequential.sequential;
import static org.paramixel.api.action.Step.step;

var users = List.of("ada", "grace", "linus");

Action spec = Each.sequential("user checks", users,
        user -> sequential("check " + user)
                .child(step("load", ctx -> loadUser(user)))
                .child(step("verify", ctx -> verifyUser(user)))
                .build())
        .build();

Use Each.sequential when order matters. Use Each.parallel when cases are independent and safe to run concurrently:

import org.paramixel.api.action.Each;
import static org.paramixel.api.action.Sequential.sequential;
import static org.paramixel.api.action.Step.step;

Action parallelSpec = Each.parallel("browser matrix", browsers,
        browser -> sequential("check " + browser)
                .child(step("run", ctx -> runBrowserScenario(browser)))
                .build())
        .parallelism(3)
        .build();

Keep data immutable or isolated per child when using parallel execution.