vendor files

vendor/google.golang.org/grpc/rpc_util_test.go

@@ -0,0 +1,237 @@
+/*
+ *
+ * Copyright 2014 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package grpc
+
+import (
+	"bytes"
+	"io"
+	"math"
+	"reflect"
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	perfpb "google.golang.org/grpc/test/codec_perf"
+	"google.golang.org/grpc/transport"
+)
+
+type fullReader struct {
+	reader io.Reader
+}
+
+func (f fullReader) Read(p []byte) (int, error) {
+	return io.ReadFull(f.reader, p)
+}
+
+var _ CallOption = EmptyCallOption{} // ensure EmptyCallOption implements the interface
+
+func TestSimpleParsing(t *testing.T) {
+	bigMsg := bytes.Repeat([]byte{'x'}, 1<<24)
+	for _, test := range []struct {
+		// input
+		p []byte
+		// outputs
+		err error
+		b   []byte
+		pt  payloadFormat
+	}{
+		{nil, io.EOF, nil, compressionNone},
+		{[]byte{0, 0, 0, 0, 0}, nil, nil, compressionNone},
+		{[]byte{0, 0, 0, 0, 1, 'a'}, nil, []byte{'a'}, compressionNone},
+		{[]byte{1, 0}, io.ErrUnexpectedEOF, nil, compressionNone},
+		{[]byte{0, 0, 0, 0, 10, 'a'}, io.ErrUnexpectedEOF, nil, compressionNone},
+		// Check that messages with length >= 2^24 are parsed.
+		{append([]byte{0, 1, 0, 0, 0}, bigMsg...), nil, bigMsg, compressionNone},
+	} {
+		buf := fullReader{bytes.NewReader(test.p)}
+		parser := &parser{r: buf}
+		pt, b, err := parser.recvMsg(math.MaxInt32)
+		if err != test.err || !bytes.Equal(b, test.b) || pt != test.pt {
+			t.Fatalf("parser{%v}.recvMsg(_) = %v, %v, %v\nwant %v, %v, %v", test.p, pt, b, err, test.pt, test.b, test.err)
+		}
+	}
+}
+
+func TestMultipleParsing(t *testing.T) {
+	// Set a byte stream consists of 3 messages with their headers.
+	p := []byte{0, 0, 0, 0, 1, 'a', 0, 0, 0, 0, 2, 'b', 'c', 0, 0, 0, 0, 1, 'd'}
+	b := fullReader{bytes.NewReader(p)}
+	parser := &parser{r: b}
+
+	wantRecvs := []struct {
+		pt   payloadFormat
+		data []byte
+	}{
+		{compressionNone, []byte("a")},
+		{compressionNone, []byte("bc")},
+		{compressionNone, []byte("d")},
+	}
+	for i, want := range wantRecvs {
+		pt, data, err := parser.recvMsg(math.MaxInt32)
+		if err != nil || pt != want.pt || !reflect.DeepEqual(data, want.data) {
+			t.Fatalf("after %d calls, parser{%v}.recvMsg(_) = %v, %v, %v\nwant %v, %v, <nil>",
+				i, p, pt, data, err, want.pt, want.data)
+		}
+	}
+
+	pt, data, err := parser.recvMsg(math.MaxInt32)
+	if err != io.EOF {
+		t.Fatalf("after %d recvMsgs calls, parser{%v}.recvMsg(_) = %v, %v, %v\nwant _, _, %v",
+			len(wantRecvs), p, pt, data, err, io.EOF)
+	}
+}
+
+func TestEncode(t *testing.T) {
+	for _, test := range []struct {
+		// input
+		msg proto.Message
+		cp  Compressor
+		// outputs
+		hdr  []byte
+		data []byte
+		err  error
+	}{
+		{nil, nil, []byte{0, 0, 0, 0, 0}, []byte{}, nil},
+	} {
+		hdr, data, err := encode(protoCodec{}, test.msg, nil, nil, nil)
+		if err != test.err || !bytes.Equal(hdr, test.hdr) || !bytes.Equal(data, test.data) {
+			t.Fatalf("encode(_, _, %v, _) = %v, %v, %v\nwant %v, %v, %v", test.cp, hdr, data, err, test.hdr, test.data, test.err)
+		}
+	}
+}
+
+func TestCompress(t *testing.T) {
+	for _, test := range []struct {
+		// input
+		data []byte
+		cp   Compressor
+		dc   Decompressor
+		// outputs
+		err error
+	}{
+		{make([]byte, 1024), NewGZIPCompressor(), NewGZIPDecompressor(), nil},
+	} {
+		b := new(bytes.Buffer)
+		if err := test.cp.Do(b, test.data); err != test.err {
+			t.Fatalf("Compressor.Do(_, %v) = %v, want %v", test.data, err, test.err)
+		}
+		if b.Len() >= len(test.data) {
+			t.Fatalf("The compressor fails to compress data.")
+		}
+		if p, err := test.dc.Do(b); err != nil || !bytes.Equal(test.data, p) {
+			t.Fatalf("Decompressor.Do(%v) = %v, %v, want %v, <nil>", b, p, err, test.data)
+		}
+	}
+}
+
+func TestToRPCErr(t *testing.T) {
+	for _, test := range []struct {
+		// input
+		errIn error
+		// outputs
+		errOut error
+	}{
+		{transport.StreamError{Code: codes.Unknown, Desc: ""}, status.Error(codes.Unknown, "")},
+		{transport.ErrConnClosing, status.Error(codes.Unavailable, transport.ErrConnClosing.Desc)},
+	} {
+		err := toRPCErr(test.errIn)
+		if _, ok := status.FromError(err); !ok {
+			t.Fatalf("toRPCErr{%v} returned type %T, want %T", test.errIn, err, status.Error(codes.Unknown, ""))
+		}
+		if !reflect.DeepEqual(err, test.errOut) {
+			t.Fatalf("toRPCErr{%v} = %v \nwant %v", test.errIn, err, test.errOut)
+		}
+	}
+}
+
+// bmEncode benchmarks encoding a Protocol Buffer message containing mSize
+// bytes.
+func bmEncode(b *testing.B, mSize int) {
+	msg := &perfpb.Buffer{Body: make([]byte, mSize)}
+	encodeHdr, encodeData, _ := encode(protoCodec{}, msg, nil, nil, nil)
+	encodedSz := int64(len(encodeHdr) + len(encodeData))
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		encode(protoCodec{}, msg, nil, nil, nil)
+	}
+	b.SetBytes(encodedSz)
+}
+
+func BenchmarkEncode1B(b *testing.B) {
+	bmEncode(b, 1)
+}
+
+func BenchmarkEncode1KiB(b *testing.B) {
+	bmEncode(b, 1024)
+}
+
+func BenchmarkEncode8KiB(b *testing.B) {
+	bmEncode(b, 8*1024)
+}
+
+func BenchmarkEncode64KiB(b *testing.B) {
+	bmEncode(b, 64*1024)
+}
+
+func BenchmarkEncode512KiB(b *testing.B) {
+	bmEncode(b, 512*1024)
+}
+
+func BenchmarkEncode1MiB(b *testing.B) {
+	bmEncode(b, 1024*1024)
+}
+
+// bmCompressor benchmarks a compressor of a Protocol Buffer message containing
+// mSize bytes.
+func bmCompressor(b *testing.B, mSize int, cp Compressor) {
+	payload := make([]byte, mSize)
+	cBuf := bytes.NewBuffer(make([]byte, mSize))
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		cp.Do(cBuf, payload)
+		cBuf.Reset()
+	}
+}
+
+func BenchmarkGZIPCompressor1B(b *testing.B) {
+	bmCompressor(b, 1, NewGZIPCompressor())
+}
+
+func BenchmarkGZIPCompressor1KiB(b *testing.B) {
+	bmCompressor(b, 1024, NewGZIPCompressor())
+}
+
+func BenchmarkGZIPCompressor8KiB(b *testing.B) {
+	bmCompressor(b, 8*1024, NewGZIPCompressor())
+}
+
+func BenchmarkGZIPCompressor64KiB(b *testing.B) {
+	bmCompressor(b, 64*1024, NewGZIPCompressor())
+}
+
+func BenchmarkGZIPCompressor512KiB(b *testing.B) {
+	bmCompressor(b, 512*1024, NewGZIPCompressor())
+}
+
+func BenchmarkGZIPCompressor1MiB(b *testing.B) {
+	bmCompressor(b, 1024*1024, NewGZIPCompressor())
+}