package utils

import (
	"database/sql"
	"database/sql/driver"
	"errors"
	"math"
	"strings"
	"testing"
	"time"
)

func TestIsValidDBNameChar(t *testing.T) {
	for _, db := range []string{"db", "dbName", "db_name", "db1", "1dbname", "db$name"} {
		if fields := strings.FieldsFunc(db, IsValidDBNameChar); len(fields) != 1 {
			t.Fatalf("failed to parse db name %v", db)
		}
	}
}

func TestCheckTruth(t *testing.T) {

func registerEnvironment[T env.Parseable](name string, defaultValue T, usage string) {
	envName := strings.Replace(strings.ToUpper(name), "-", "_", -1)
	// Note: we do not rely on istio env package to retrieve configuration. We relies on viper.
	// This is just to make sure the reference doc tool can generate doc with these vars as env variable at istio.io.
	env.Register(envName, defaultValue, usage)
	bindViper(name)
}

func bindViper(name string) {

     *
     * The comparison is stable with respect to case sensitivity, so the order of the children is stable across operating systems.
     */
    Comparator<FileSystemLocationSnapshot> BY_NAME = Comparator.comparing(FileSystemLocationSnapshot::getName, PathUtil::compareFileNames);

    /**
     * The file name.
     */
    String getName();

    /**
     * The absolute path of the file.
     */

// VerifyOptions contains parameters for Certificate.Verify.
type VerifyOptions struct {
	// DNSName, if set, is checked against the leaf certificate with
	// Certificate.VerifyHostname or the platform verifier.
	DNSName string

	// Intermediates is an optional pool of certificates that are not trust
	// anchors, but can be used to form a chain from the leaf certificate to a

	// Kubernetes release.
	for _, rt := range tests {
		t.Run(rt.name, func(t *testing.T) {

			dnsName := constants.CoreDNSDeploymentName

			client := newMockClientForTest(t, dnsName, rt.beforeDNSVersion, rt.deployDNSFailed)

			actualUpgrades, actualErr := GetAvailableUpgrades(rt.vg, rt.allowExperimental, rt.allowRCs, client, &output.TextPrinter{})

    public static OperatingSystem current() {
        if (currentOs == null) {
            currentOs = forName(System.getProperty("os.name"));
        }
        return currentOs;
    }

    // for testing current()
    static void resetCurrent() {
        currentOs = null;
    }

    public static OperatingSystem forName(String os) {
        String osName = os.toLowerCase(Locale.ROOT);
        if (osName.contains("windows")) {

        context.iteration == firstWarmupWithCache && context.phase == Phase.WARM_UP
    }

    String getRemoteCacheSettingsScript() {
        """
            def httpCacheClass = Class.forName('org.gradle.caching.http.HttpBuildCache')
            buildCache {
                local {
                    directory = '${cacheDir.absoluteFile.toURI()}'
                }
                remote(httpCacheClass) {

                    switch (knownClassLoaderSpec.id) {
                        case PLATFORM_CLASS_LOADER_ID:
                            return Class.forName(className, false, PLATFORM_CLASS_LOADER);
                        default:
                            throw new IllegalArgumentException("Unknown ClassLoader id specified.");
                    }
                }

	m.pendingAdmissionPod = pod
}

func (m *ManagerImpl) isContainerAlreadyRunning(podUID, cntName string) bool {
	cntID, err := m.containerMap.GetContainerID(podUID, cntName)
	if err != nil {
		klog.V(4).InfoS("container not found in the initial map, assumed NOT running", "podUID", podUID, "containerName", cntName, "err", err)
		return false
	}

                    // Check that this is a dependency (to verify that the class is not accidentally removed and so make the test verify nothing)
                    assert Class.forName(nonLauncherOrCoreClass) != null

                    try {
                        def clazz = systemLoader.loadClass(nonLauncherOrCoreClass)