proto/size_test.go

// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2012 Google Inc.  All rights reserved.
// http://code.google.com/p/goprotobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package proto_test

import (
	"log"
	"testing"

	pb "./testdata"
	. "code.google.com/p/goprotobuf/proto"
)

var messageWithExtension1 = &pb.MyMessage{Count: Int32(7)}
var messageWithExtension3 = &pb.MyMessage{Count: Int32(8)}

func init() {
	if err := SetExtension(messageWithExtension1, pb.E_Ext_More, &pb.Ext{Data: String("Abbott")}); err != nil {
		log.Panicf("SetExtension: %v", err)
	}
	if err := SetExtension(messageWithExtension3, pb.E_Ext_More, &pb.Ext{Data: String("Costello")}); err != nil {
		log.Panicf("SetExtension: %v", err)
	}

	// Force messageWithExtension3 to have the extension encoded.
	Marshal(messageWithExtension3)
}

var SizeTests = []struct {
	desc string
	pb   Message
}{
	{"empty", &pb.OtherMessage{}},
	// Basic types.
	{"bool", &pb.Defaults{F_Bool: Bool(true)}},
	{"int32", &pb.Defaults{F_Int32: Int32(12)}},
	{"small int64", &pb.Defaults{F_Int64: Int64(1)}},
	{"big int64", &pb.Defaults{F_Int64: Int64(1 << 20)}},
	{"fixed32", &pb.Defaults{F_Fixed32: Uint32(71)}},
	{"fixed64", &pb.Defaults{F_Fixed64: Uint64(72)}},
	{"uint32", &pb.Defaults{F_Uint32: Uint32(123)}},
	{"uint64", &pb.Defaults{F_Uint64: Uint64(124)}},
	{"float", &pb.Defaults{F_Float: Float32(12.6)}},
	{"double", &pb.Defaults{F_Double: Float64(13.9)}},
	{"string", &pb.Defaults{F_String: String("niles")}},
	{"bytes", &pb.Defaults{F_Bytes: []byte("wowsa")}},
	{"bytes, empty", &pb.Defaults{F_Bytes: []byte{}}},
	{"sint32", &pb.Defaults{F_Sint32: Int32(65)}},
	{"sint64", &pb.Defaults{F_Sint64: Int64(67)}},
	{"enum", &pb.Defaults{F_Enum: pb.Defaults_BLUE.Enum()}},
	// Repeated.
	{"empty repeated bool", &pb.MoreRepeated{Bools: []bool{}}},
	{"repeated bool", &pb.MoreRepeated{Bools: []bool{false, true, true, false}}},
	{"packed repeated bool", &pb.MoreRepeated{BoolsPacked: []bool{false, true, true, false, true, true, true}}},
	{"repeated int32", &pb.MoreRepeated{Ints: []int32{1, 12203, 1729}}},
	{"repeated int32 packed", &pb.MoreRepeated{IntsPacked: []int32{1, 12203, 1729}}},
	{"repeated string", &pb.MoreRepeated{Strings: []string{"r", "ken", "gri"}}},
	// Nested.
	{"nested", &pb.OldMessage{Nested: &pb.OldMessage_Nested{Name: String("whatever")}}},
	// Other things.
	{"unrecognized", &pb.MoreRepeated{XXX_unrecognized: []byte{13<<3 | 0, 4}}},
	{"extension (unencoded)", messageWithExtension1},
	{"extension (encoded)", messageWithExtension3},
}

func TestSize(t *testing.T) {
	for _, tc := range SizeTests {
		size := Size(tc.pb)
		b, err := Marshal(tc.pb)
		if err != nil {
			t.Errorf("%v: Marshal failed: %v", tc.desc, err)
			continue
		}
		if size != len(b) {
			t.Errorf("%v: Size(%v) = %d, want %d", tc.desc, tc.pb, size, len(b))
			t.Logf("%v: bytes: %#v", tc.desc, b)
		}
	}
}