Support test case filter like h2spec do

reporter/web_reporter.go

@@ -95,6 +95,11 @@ func htmlReport(tg *spec.ClientTestGroup, c *config.Config) string {
 }
 
 func htmlReportForTestGroup(tg *spec.ClientTestGroup, c *config.Config) string {
+	mode := c.RunMode(tg.ID())
+	if mode == config.RunModeNone {
+		return ""
+	}
+
 	var buffer bytes.Buffer
 
 	buffer.WriteString(fmt.Sprintf("<div>%s</div>", tg.Title()))

spec/server.go

@@ -19,7 +19,7 @@ type Server struct {
 
 func Listen(c *config.Config, tg *ClientTestGroup) (*Server, error) {
 	testCases := make(map[int]*ClientTestCase)
-	tg.ClientTestCases(testCases, c.FromPort)
+	tg.ClientTestCases(testCases, c, c.FromPort)
 
 	server := &Server{
 		listeners: make([]net.Listener, 0),

spec/specd.go

@@ -60,6 +60,11 @@ func (tg *ClientTestGroup) Level() int {
 
 // Test runs all the tests included in this group.
 func (tg *ClientTestGroup) Test(c *config.Config) {
+	mode := c.RunMode(tg.ID())
+	if mode == config.RunModeNone {
+		return
+	}
+
 	level := tg.Level()
 
 	log.SetIndentLevel(level)
@@ -101,15 +106,20 @@ func (tg *ClientTestGroup) AddTestCase(tc *ClientTestCase) {
 	tg.Tests = append(tg.Tests, tc)
 }
 
-func (tg *ClientTestGroup) ClientTestCases(testCases map[int]*ClientTestCase, currentPort int) int {
+func (tg *ClientTestGroup) ClientTestCases(testCases map[int]*ClientTestCase, c *config.Config, currentPort int) int {
+	mode := c.RunMode(tg.ID())
+	if mode == config.RunModeNone {
+		return currentPort
+	}
+
 	for _, tc := range tg.Tests {
-		currentPort += 1
 		tc.Port = currentPort
 		testCases[currentPort] = tc
+		currentPort += 1
 	}
 
 	for _, g := range tg.Groups {
-		currentPort = g.ClientTestCases(testCases, currentPort+1)
+		currentPort = g.ClientTestCases(testCases, c, currentPort)
 	}
 
 	return currentPort