Hermetic Subtest Isolation with Parallel Execution Control and Cleanup Hooks

package main
 
import (
	"testing"
)
 
type TestEnv struct {
	ID string
}
 
func SetupEnv(t *testing.T) *TestEnv {
	t.Helper()
	env := &TestEnv{ID: t.Name()}
	t.Cleanup(func() {
		// Teardown resource after subtest completes
	})
	return env
}
 
func TestConcurrentWorkflows(t *testing.T) {
	cases := []struct {
		name  string
		input int
	}{
		{"case_alpha", 10},
		{"case_beta", 20},
	}
 
	for _, tc := range cases {
		tc := tc
		t.Run(tc.name, func(t *testing.T) {
			t.Parallel()
			env := SetupEnv(t)
			if env.ID == "" {
				t.Fatalf("expected valid test env ID")
			}
		})
	}
}