ci: add test for websocket

vendor/github.com/gorilla/websocket/prepared_test.go

@@ -0,0 +1,74 @@
+// Copyright 2017 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"bytes"
+	"compress/flate"
+	"math/rand"
+	"testing"
+)
+
+var preparedMessageTests = []struct {
+	messageType            int
+	isServer               bool
+	enableWriteCompression bool
+	compressionLevel       int
+}{
+	// Server
+	{TextMessage, true, false, flate.BestSpeed},
+	{TextMessage, true, true, flate.BestSpeed},
+	{TextMessage, true, true, flate.BestCompression},
+	{PingMessage, true, false, flate.BestSpeed},
+	{PingMessage, true, true, flate.BestSpeed},
+
+	// Client
+	{TextMessage, false, false, flate.BestSpeed},
+	{TextMessage, false, true, flate.BestSpeed},
+	{TextMessage, false, true, flate.BestCompression},
+	{PingMessage, false, false, flate.BestSpeed},
+	{PingMessage, false, true, flate.BestSpeed},
+}
+
+func TestPreparedMessage(t *testing.T) {
+	for _, tt := range preparedMessageTests {
+		var data = []byte("this is a test")
+		var buf bytes.Buffer
+		c := newConn(fakeNetConn{Reader: nil, Writer: &buf}, tt.isServer, 1024, 1024)
+		if tt.enableWriteCompression {
+			c.newCompressionWriter = compressNoContextTakeover
+		}
+		c.SetCompressionLevel(tt.compressionLevel)
+
+		// Seed random number generator for consistent frame mask.
+		rand.Seed(1234)
+
+		if err := c.WriteMessage(tt.messageType, data); err != nil {
+			t.Fatal(err)
+		}
+		want := buf.String()
+
+		pm, err := NewPreparedMessage(tt.messageType, data)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		// Scribble on data to ensure that NewPreparedMessage takes a snapshot.
+		copy(data, "hello world")
+
+		// Seed random number generator for consistent frame mask.
+		rand.Seed(1234)
+
+		buf.Reset()
+		if err := c.WritePreparedMessage(pm); err != nil {
+			t.Fatal(err)
+		}
+		got := buf.String()
+
+		if got != want {
+			t.Errorf("write message != prepared message for %+v", tt)
+		}
+	}
+}