func encodeHeaderNoImplicit(t *testing.T, headers ...string) []byte {
	var buf bytes.Buffer
	enc := hpack.NewEncoder(&buf)
	for len(headers) > 0 {
		k, v := headers[0], headers[1]
		headers = headers[2:]
		if err := enc.WriteField(hpack.HeaderField{Name: k, Value: v}); err != nil {
			t.Fatalf("HPACK encoding error for %q/%q: %v", k, v, err)
		}
	}
	return buf.Bytes()
}
like encodeHeader, but don't add implicit pseudo headers.
package http2
import (
	"bytes"
	"errors"
	"flag"
	"fmt"
	"net/http"
	"os/exec"
	"strconv"
	"strings"
	"testing"
	"time"
	"github.com/minight/h2csmuggler/http2/hpack"
)
var knownFailing = flag.Bool("known_failing", false, "Run known-failing tests.")
func condSkipFailingTest(t *testing.T) {
	if !*knownFailing {
		t.Skip("Skipping known-failing test without --known_failing")
	}
}
func init() {
	inTests = true
	DebugGoroutines = true
	flag.BoolVar(&VerboseLogs, "verboseh2", VerboseLogs, "Verbose HTTP/2 debug logging")
}
func TestSettingString(t *testing.T) {
	tests := []struct {
		s    Setting
		want string
	}{
		{Setting{SettingMaxFrameSize, 123}, "[MAX_FRAME_SIZE = 123]"},
		{Setting{1<<16 - 1, 123}, "[UNKNOWN_SETTING_65535 = 123]"},
	}
	for i, tt := range tests {
		got := fmt.Sprint(tt.s)
		if got != tt.want {
			t.Errorf("%d. for %#v, string = %q; want %q", i, tt.s, got, tt.want)
		}
	}
}
type twriter struct {
	t  testing.TB
	st *serverTester  
}
func (w twriter) Write(p []byte) (n int, err error) {
	if w.st != nil {
		ps := string(p)
		for _, phrase := range w.st.logFilter {
			if strings.Contains(ps, phrase) {
				return len(p), nil  
			}
		}
	}
	w.t.Logf("%s", p)
	return len(p), nil
}