},
			},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.Name, func(t *testing.T) {
			actual := HostMatcherWithRegex(tc.K, tc.V)
			if re := actual.GetStringMatch().GetSafeRegex().GetRegex(); re != "" {
				_, err := regexp.Compile(re)
				if err != nil {
					t.Errorf("failed to compile regex %s: %v", re, err)
				}
			}
			if !cmp.Equal(tc.Expect, actual, protocmp.Transform()) {

      }
    }

    companion object {
      private const val DEFAULT_DURATION_MILLIS = 1000L * 60 * 60 * 24 // 24 hours.
    }
  }

  companion object {
    private val PEM_REGEX = Regex("""-----BEGIN ([!-,.-~ ]*)-----([^-]*)-----END \1-----""")

    /**
     * Decodes a multiline string that contains both a [certificate][certificatePem] and a

			}
		case *route.RouteMatch_Path:
			if input.Path != pt.Path {
				continue
			}
		case *route.RouteMatch_SafeRegex:
			r, err := regexp.Compile(pt.SafeRegex.GetRegex())
			if err != nil {
				sim.t.Fatalf("invalid regex %v: %v", pt.SafeRegex.GetRegex(), err)
			}
			if !r.MatchString(input.Path) {
				continue
			}
		default:
			sim.t.Fatalf("unknown route path type %T", pt)
		}

        assertUrlLink("smb:/home/taro/%E3%81%82.txt", //
                "file://home/taro/%E3%81%82.txt");

        PathMapping pathMapping = new PathMapping();
        pathMapping.setRegex("ftp:");
        pathMapping.setReplacement("file:");
        ComponentUtil.getPathMappingHelper().cachedPathMappingList.add(pathMapping);
        // ftp->file
        assertUrlLink("ftp:/home/taro/test.txt", //

				errs = appendErrors(errs, ValidateHTTPHeaderNameOrJwtClaimRoute(name))
				// `*` is NOT a RE2 style regex, it will be translated as present_match.
				if header != nil && header.GetRegex() != "*" {
					errs = appendErrors(errs, validateStringMatch(header, "withoutHeaders"))
				}
			}

			// uri allows empty prefix match:

			serviceRegistry, nil, 8080, gatewayNames, route.RouteOptions{})
		xdstest.ValidateRoutes(t, routes)
		g.Expect(err).NotTo(HaveOccurred())
		g.Expect(len(routes)).To(Equal(1))
		g.Expect(routes[0].GetMatch().GetSafeRegex().GetRegex()).To(Equal("\\/(.?)\\/status"))
	})

	t.Run("for virtual service with stat_prefix set for a match on URI", func(t *testing.T) {
		g := NewWithT(t)
		cg := core.NewConfigGenTest(t, core.TestOptions{})

		case "suffix":
			pat = pattern.GetSuffix()
		case "regexp":
			// Migration tracked in https://github.com/istio/istio/issues/17127
			//nolint: staticcheck
			pat = pattern.GetSafeRegex().GetRegex()
		}

		if pat != "" {
			patterns = append(patterns, pat)
		}
	}
	gotPattern := strings.Join(patterns, ",")
	if want != gotPattern {

		switch ps.(type) {
		case *route.RouteMatch_Prefix:
			path = m.GetPrefix() + "*"
		case *route.RouteMatch_Path:
			path = m.GetPath()
		case *route.RouteMatch_SafeRegex:
			path = m.GetSafeRegex().GetRegex()
		}
	}

	// If there is only one destination cluster in route, return host:port/uri as description of route.
	// Otherwise there are multiple destination clusters and destination host is not clear. For that case

}

func validateStringMatchRegexp(sm *networking.StringMatch, where string) error {
	switch sm.GetMatchType().(type) {
	case *networking.StringMatch_Regex:
	default:
		return nil
	}
	re := sm.GetRegex()
	if re == "" {
		return fmt.Errorf("%q: regex string match should not be empty", where)
	}
	return validateStringRegexp(re, where)
}

func validateStringRegexp(re string, where string) error {

	case *istio.StringMatch_Prefix:
		return len(match.Uri.GetPrefix())
	case *istio.StringMatch_Exact:
		return len(match.Uri.GetExact())
	case *istio.StringMatch_Regex:
		return len(match.Uri.GetRegex())
	}
	// should not happen
	return -1
}

func parentMeta(obj config.Config, sectionName *k8s.SectionName) map[string]string {