server/prpc: updated server according to protocol

server/prpc/response_test.go

Index: server/prpc/response_test.go
diff --git a/server/prpc/response_test.go b/server/prpc/response_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..311b1012514312d5634e585d6484b4ead5384410
--- /dev/null
+++ b/server/prpc/response_test.go
@@ -0,0 +1,80 @@
+// Copyright 2016 The Chromium 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 prpc
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"golang.org/x/net/context"
+	"google.golang.org/grpc/codes"
+
+	"github.com/luci/luci-go/common/logging"
+	"github.com/luci/luci-go/common/logging/memlogger"
+	"github.com/luci/luci-go/common/prpc"
+
+	. "github.com/luci/luci-go/common/logging/memlogger"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestResponse(t *testing.T) {
+	t.Parallel()
+
+	Convey("response", t, func() {
+		c := context.Background()
+		c = memlogger.Use(c)
+		log := logging.Get(c).(*memlogger.MemLogger)
+
+		rec := httptest.NewRecorder()
+
+		Convey("ok", func() {
+			r := response{
+				body: []byte("hi"),
+				header: http.Header{
+					headerContentType: []string{"text/html"},
+				},
+			}
+			r.write(c, rec)
+			So(rec.Code, ShouldEqual, http.StatusOK)
+			So(rec.Header().Get(prpc.HeaderGRPCCode), ShouldEqual, "0")
+			So(rec.Header().Get(headerContentType), ShouldEqual, "text/html")
+			So(rec.Body.String(), ShouldEqual, "hi")
+		})
+
+		Convey("client error", func() {
+			r := errResponse(codes.NotFound, 0, "not found")
+			r.write(c, rec)
+			So(rec.Code, ShouldEqual, http.StatusNotFound)
+			So(rec.Header().Get(prpc.HeaderGRPCCode), ShouldEqual, "5")
+			So(rec.Header().Get(headerContentType), ShouldEqual, "text/plain")
+			So(rec.Body.String(), ShouldEqual, "not found\n")
+		})
+
+		Convey("internal error", func() {
+			r := errResponse(codes.Internal, 0, "errmsg")
+			r.write(c, rec)
+			So(rec.Code, ShouldEqual, http.StatusInternalServerError)
+			So(rec.Header().Get(prpc.HeaderGRPCCode), ShouldEqual, "13")
+			So(rec.Header().Get(headerContentType), ShouldEqual, "text/plain")
+			So(rec.Body.String(), ShouldEqual, "Internal Server Error\n")
+			So(log, ShouldHaveLog, logging.Error, "errmsg", map[string]interface{}{
+				"code": codes.Internal,
+			})
+		})
+
+		Convey("unknown error", func() {
+			r := errResponse(codes.Unknown, 0, "errmsg")
+			r.write(c, rec)
+			So(rec.Code, ShouldEqual, http.StatusInternalServerError)
+			So(rec.Header().Get(prpc.HeaderGRPCCode), ShouldEqual, "2")
+			So(rec.Header().Get(headerContentType), ShouldEqual, "text/plain")
+			So(rec.Body.String(), ShouldEqual, "Internal Server Error\n")
+			So(log, ShouldHaveLog, logging.Error, "errmsg", map[string]interface{}{
+				"code": codes.Unknown,
+			})
+		})
+	})
+}