| // Protocol Buffers for Go with Gadgets |
| // |
| // Copyright (c) 2013, The GoGo Authors. All rights reserved. |
| // http://github.com/gogo/protobuf |
| // |
| // 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. |
| // |
| // 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 compare |
| |
| import ( |
| "github.com/gogo/protobuf/gogoproto" |
| "github.com/gogo/protobuf/plugin/testgen" |
| "github.com/gogo/protobuf/protoc-gen-gogo/generator" |
| ) |
| |
| type test struct { |
| *generator.Generator |
| } |
| |
| func NewTest(g *generator.Generator) testgen.TestPlugin { |
| return &test{g} |
| } |
| |
| func (p *test) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool { |
| used := false |
| randPkg := imports.NewImport("math/rand") |
| timePkg := imports.NewImport("time") |
| testingPkg := imports.NewImport("testing") |
| protoPkg := imports.NewImport("github.com/gogo/protobuf/proto") |
| unsafePkg := imports.NewImport("unsafe") |
| if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) { |
| protoPkg = imports.NewImport("github.com/golang/protobuf/proto") |
| } |
| for _, message := range file.Messages() { |
| ccTypeName := generator.CamelCaseSlice(message.TypeName()) |
| if !gogoproto.HasCompare(file.FileDescriptorProto, message.DescriptorProto) { |
| continue |
| } |
| if message.DescriptorProto.GetOptions().GetMapEntry() { |
| continue |
| } |
| |
| if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) { |
| used = true |
| hasUnsafe := gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) || |
| gogoproto.IsUnsafeUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) |
| p.P(`func Test`, ccTypeName, `Compare(t *`, testingPkg.Use(), `.T) {`) |
| p.In() |
| if hasUnsafe { |
| p.P(`var bigendian uint32 = 0x01020304`) |
| p.P(`if *(*byte)(`, unsafePkg.Use(), `.Pointer(&bigendian)) == 1 {`) |
| p.In() |
| p.P(`t.Skip("unsafe does not work on big endian architectures")`) |
| p.Out() |
| p.P(`}`) |
| } |
| p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`) |
| p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`) |
| p.P(`dAtA, err := `, protoPkg.Use(), `.Marshal(p)`) |
| p.P(`if err != nil {`) |
| p.In() |
| p.P(`panic(err)`) |
| p.Out() |
| p.P(`}`) |
| p.P(`msg := &`, ccTypeName, `{}`) |
| p.P(`if err := `, protoPkg.Use(), `.Unmarshal(dAtA, msg); err != nil {`) |
| p.In() |
| p.P(`panic(err)`) |
| p.Out() |
| p.P(`}`) |
| p.P(`if c := p.Compare(msg); c != 0 {`) |
| p.In() |
| p.P(`t.Fatalf("%#v !Compare %#v, since %d", msg, p, c)`) |
| p.Out() |
| p.P(`}`) |
| p.P(`p2 := NewPopulated`, ccTypeName, `(popr, false)`) |
| p.P(`c := p.Compare(p2)`) |
| p.P(`c2 := p2.Compare(p)`) |
| p.P(`if c != (-1 * c2) {`) |
| p.In() |
| p.P(`t.Errorf("p.Compare(p2) = %d", c)`) |
| p.P(`t.Errorf("p2.Compare(p) = %d", c2)`) |
| p.P(`t.Errorf("p = %#v", p)`) |
| p.P(`t.Errorf("p2 = %#v", p2)`) |
| p.Out() |
| p.P(`}`) |
| p.Out() |
| p.P(`}`) |
| } |
| |
| } |
| return used |
| } |
| |
| func init() { |
| testgen.RegisterTestPlugin(NewTest) |
| } |