rval := ""
	for _, f := range want {
		wf := "Func: " + f + "\n"
		if strings.Contains(output, wf) {
			continue
		}
		rval += fmt.Sprintf("error: output should contain %q but does not\n", wf)
	}
	for _, f := range avoid {
		wf := "Func: " + f + "\n"
		if strings.Contains(output, wf) {
			rval += fmt.Sprintf("error: output should not contain %q but does\n", wf)
		}
	}
	if rval != "" {

	for i := 0; i < hv.NumField(); i++ {
		name := hv.Type().Field(i).Name
		if !token.IsExported(name) {
			continue
		}
		hf := hv.Field(i).Interface()
		wf := wv.Field(i).Interface()
		if !reflect.DeepEqual(hf, wf) {
			t.Errorf("%s: %s = %v want %v", prefix, name, hf, wf)
		}
	}
}

type responseLocationTest struct {
	location string // Response's Location header or ""
	requrl   string // Response.Request.URL or ""

			logDiff(t, fmt.Sprintf("%s[%d]", prefix, i), got.Index(i), want.Index(i))
		}
	case reflect.Struct:
		for i := 0; i < typ.NumField(); i++ {
			gf, wf := got.Field(i), want.Field(i)
			logDiff(t, prefix+"."+typ.Field(i).Name, gf, wf)
		}
	case reflect.Map:
		t.Fatal("not implemented: logDiff for map")
	default:
		if got.Interface() != want.Interface() {
			t.Logf("%s: got %v, want %v", prefix, got, want)

				catchAlls[false] = ftr.fs
			}
			if ftr.matchesAllResourceRequests && fsPrecedes(ftr.fs, catchAlls[true]) {
				catchAlls[true] = ftr.fs
			}
		}
		if testDebugLogs {
			t.Logf("For trial %s, adding wf=%v FlowSchema %s", trial, ftr.wellFormed, fcfmt.Fmt(ftr.fs))
		}
	}
	if n == 0 || rng.Float32() < 0.5 {
		add(mandFTRCatchAll)
	}
	for i := 1; i <= n; i++ {

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