* an edge connecting node A to node B if this {@link Network} has an edge connecting A to B.
   *
   * <p>If this network {@link #allowsParallelEdges() allows parallel edges}, parallel edges will be
   * treated as if collapsed into a single edge. For example, the {@link #degree(Object)} of a node
   * in the {@link Graph} view may be less than the degree of the same node in this {@link Network}.
   */

func path(file string) string {
	return filepath.Join("testdata", file)
}

func check(t *testing.T, file string) {
	t.Run(file, func(t *testing.T) {
		testenv.MustHaveGoBuild(t)
		testenv.MustHaveCGO(t)
		t.Parallel()

		contents, err := os.ReadFile(path(file))
		if err != nil {
			t.Fatal(err)
		}
		var errors []*regexp.Regexp
		for i, line := range bytes.Split(contents, []byte("\n")) {

        forking(true),
        noDaemon(true),
        parallel(true, true),
        configCache(true),
        isolatedProjects(true);

        final public boolean forks;
        final public boolean executeParallel;

        Executer(boolean forks) {
            this(forks, false);
        }

        Executer(boolean forks, boolean parallel) {
            this.forks = forks;

	}
	return true
}

// setParallel marks t as a parallel test if we're in short mode
// (all.bash), but as a serial test otherwise. Using t.Parallel isn't
// compatible with the afterTest func in non-short mode.
func setParallel(t *testing.T) {
	if strings.Contains(t.Name(), "HTTP2") {
		http.CondSkipHTTP2(t)
	}
	if testing.Short() {
		t.Parallel()
	}
}

func runningBenchmarks() bool {

// currently disabled in -race mode.

var fixedSeed = MakeSeed()

// Sanity checks.
// hash should not depend on values outside key.
// hash should not depend on alignment.
func TestSmhasherSanity(t *testing.T) {
	t.Parallel()
	r := rand.New(rand.NewSource(1234))
	const REP = 10
	const KEYMAX = 128
	const PAD = 16
	const OFFMAX = 16
	for k := 0; k < REP; k++ {
		for n := 0; n < KEYMAX; n++ {
			for i := 0; i < OFFMAX; i++ {

//go:build unix

package os_test

import (
	"errors"
	"internal/testenv"
	"math"
	. "os"
	"runtime"
	"syscall"
	"testing"
)

func TestErrProcessDone(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	t.Parallel()

	p, err := StartProcess(testenv.GoToolPath(t), []string{"go"}, &ProcAttr{})
	if err != nil {
		t.Fatalf("starting test process: %v", err)
	}
	p.Wait()
	if got := p.Signal(Kill); got != ErrProcessDone {

class ScalaConcurrencyIntegrationTest extends AbstractIntegrationSpec {
    @Rule BlockingHttpServer httpServer = new BlockingHttpServer()

    @Issue("https://github.com/gradle/gradle/issues/14434")
    def "can run tests in parallel with project dependencies"() {
        given:
        httpServer.expectConcurrent(':a:test', ':b:test', ':c:test', ':d:test')
        httpServer.start()

        settingsFile << """
            include 'a', 'b', 'c', 'd'

	}
	const payloadSize = 512
	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
	payload := make([]byte, payloadSize)
	_, err = rng.Read(payload)
	errFatal(err)

	// Wait for all to connect
	// Parallel writes per server.
	b.Run("bytes", func(b *testing.B) {
		for par := 1; par <= 32; par *= 2 {
			b.Run("par="+strconv.Itoa(par*runtime.GOMAXPROCS(0)), func(b *testing.B) {
				defer timeout(60 * time.Second)()

import org.gradle.test.precondition.Requires
import org.gradle.test.preconditions.IntegTestPreconditions
import org.junit.Rule

@Requires(IntegTestPreconditions.NotParallelExecutor) // no point, always runs in parallel
public class ParallelProjectExecutionIntegrationTest extends AbstractIntegrationSpec {

    @Rule public final BlockingHttpServer blockingServer = new BlockingHttpServer()

    def setup() {

        when:
        def result = runner.run()

        then:
        result.assertCurrentVersionHasNotRegressed()

        cleanup:
        stopServer()
    }

    def "resolves dependencies from external repository (parallel)"() {
        startServer()

        given: