Allow webrpc-test binary to print out ridl scheme (#176)

Allow test binary to print out ridl scheme

cmd/webrpc-test/main.go

@@ -8,17 +8,20 @@ import (
 	"net/http"
 	"os"
 	"time"
+	_ "embed"
 
 	"github.com/webrpc/webrpc"
 	"github.com/webrpc/webrpc/tests/client"
 	"github.com/webrpc/webrpc/tests/server"
+	"github.com/webrpc/webrpc/tests"
 )
 
 var (
 	flags       = flag.NewFlagSet("webrpc-test", flag.ContinueOnError)
 	clientFlag  = flags.Bool("client", false, "client mode")
 	serverFlag  = flags.Bool("server", false, "server mode")
 	versionFlag = flags.Bool("version", false, "print version and exit")
+	printSchema = flags.Bool("print-schema", false, "print RIDL schema used for testing client/server communication")
 
 	// -client
 	clientFlags = flag.NewFlagSet("webrpc-test -client", flag.ExitOnError)
@@ -43,6 +46,11 @@ func main() {
 		os.Exit(0)
 	}
 
+	if *printSchema {
+		fmt.Println(tests.GetSchema())
+		os.Exit(0)
+	}
+
 	if !*serverFlag && !*clientFlag {
 		fmt.Fprintf(os.Stderr, "-server or -client flag is required\n")
 		os.Exit(1)

tests/schema.go

@@ -0,0 +1,12 @@
+package tests
+
+import (
+	_ "embed"
+)
+
+//go:embed schema/api.ridl
+var schema string
+
+func GetSchema() string {
+	return schema
+}