| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // 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 binary |
| |
| import ( |
| "bytes" |
| "io" |
| "io/ioutil" |
| "testing" |
| ) |
| |
| type errorWriter struct{ e error } |
| |
| func (e errorWriter) Write([]byte) (int, error) { return 0, e.e } |
| |
| type shortWriter struct{} |
| |
| func (e shortWriter) Write([]byte) (int, error) { return 0, nil } |
| |
| func checkEncoderGivesError(t *testing.T, e *Encoder, expectedError error) { |
| errs := []struct { |
| name string |
| err error |
| }{ |
| {"Bool", e.Bool(false)}, |
| {"Int8", e.Int8(42)}, |
| {"Uint8", e.Uint8(42)}, |
| {"Int16", e.Int16(42)}, |
| {"Uint16", e.Uint16(42)}, |
| {"Int32", e.Int32(42)}, |
| {"Uint32", e.Uint32(42)}, |
| {"Int64", e.Int64(42)}, |
| {"Uint64", e.Uint64(42)}, |
| {"String", e.String("string")}, |
| {"CString", e.CString("string")}, |
| {"Data", e.Data([]byte{1, 2, 3, 4})}, |
| {"Object", e.Object(testObjA)}, |
| } |
| for _, e := range errs { |
| if e.err != expectedError { |
| t.Errorf("Encoding %s gave unexpected error. Expected: %v, got: %v", e.name, expectedError, e.err) |
| } |
| } |
| } |
| |
| func TestEncoderNoError(t *testing.T) { |
| e := NewEncoder(ioutil.Discard) |
| checkEncoderGivesError(t, e, nil) |
| } |
| |
| func TestEncoderShortWrite(t *testing.T) { |
| e := NewEncoder(shortWriter{}) |
| checkEncoderGivesError(t, e, io.ErrShortWrite) |
| } |
| |
| func TestEncoderTestError(t *testing.T) { |
| e := NewEncoder(errorWriter{testError}) |
| checkEncoderGivesError(t, e, testError) |
| } |
| |
| func TestEncoderBool(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Bool(false) |
| e.Bool(true) |
| expected, got := []byte{0, 1}, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderInt8(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Int8(0) |
| e.Int8(127) |
| e.Int8(-128) |
| e.Int8(-1) |
| expected, got := []byte{0x00, 0x7f, 0x80, 0xff}, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderUint8(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Uint8(0x00) |
| e.Uint8(0x7f) |
| e.Uint8(0x80) |
| e.Uint8(0xff) |
| expected, got := []byte{0x00, 0x7f, 0x80, 0xff}, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderInt16(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Int16(0) |
| e.Int16(32767) |
| e.Int16(-32768) |
| e.Int16(-1) |
| expected, got := []byte{ |
| 0x00, 0x00, |
| 0xff, 0x7f, |
| 0x00, 0x80, |
| 0xff, 0xff, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderUint16(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Uint16(0) |
| e.Uint16(0xbeef) |
| e.Uint16(0xc0de) |
| expected, got := []byte{ |
| 0x00, 0x00, |
| 0xef, 0xbe, |
| 0xde, 0xc0, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderInt32(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Int32(0) |
| e.Int32(2147483647) |
| e.Int32(-2147483648) |
| e.Int32(-1) |
| expected, got := []byte{ |
| 0x00, 0x00, 0x00, 0x00, |
| 0xff, 0xff, 0xff, 0x7f, |
| 0x00, 0x00, 0x00, 0x80, |
| 0xff, 0xff, 0xff, 0xff, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderUint32(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Uint32(0) |
| e.Uint32(0x01234567) |
| e.Uint32(0x10abcdef) |
| expected, got := []byte{ |
| 0x00, 0x00, 0x00, 0x00, |
| 0x67, 0x45, 0x23, 0x01, |
| 0xef, 0xcd, 0xab, 0x10, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderFloat32(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Float32(0) |
| e.Float32(1) |
| e.Float32(64.5) |
| expected, got := []byte{ |
| 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x80, 0x3f, |
| 0x00, 0x00, 0x81, 0x42, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderInt64(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Int64(0) |
| e.Int64(9223372036854775807) |
| e.Int64(-9223372036854775808) |
| e.Int64(-1) |
| expected, got := []byte{ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderUint64(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Uint64(0) |
| e.Uint64(0x0123456789abcdef) |
| e.Uint64(0xfedcba9876543210) |
| expected, got := []byte{ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0x01, |
| 0x10, 0x32, 0x54, 0x76, 0x98, 0xba, 0xdc, 0xfe, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderFloat64(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Float64(0) |
| e.Float64(1) |
| e.Float64(64.5) |
| |
| expected, got := []byte{ |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x3f, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x50, 0x40, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderString(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.String("Hello") |
| e.String("") |
| e.String("World") |
| e.String("こんにちは世界") |
| |
| expected, got := []byte{ |
| 0x05, 0x00, 0x00, 0x00, |
| 'H', 'e', 'l', 'l', 'o', |
| 0x00, 0x00, 0x00, 0x00, |
| 0x05, 0x00, 0x00, 0x00, |
| 'W', 'o', 'r', 'l', 'd', |
| 0x15, 0x00, 0x00, 0x00, |
| 0xe3, 0x81, 0x93, 0xe3, 0x82, 0x93, 0xe3, 0x81, 0xab, 0xe3, 0x81, 0xa1, 0xe3, 0x81, 0xaf, 0xe4, 0xb8, 0x96, 0xe7, 0x95, 0x8c, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderCString(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.CString("Hello") |
| e.CString("") |
| e.CString("World") |
| e.CString("こんにちは世界") |
| |
| expected, got := []byte{ |
| 'H', 'e', 'l', 'l', 'o', 0x00, |
| 0x00, |
| 'W', 'o', 'r', 'l', 'd', 0x00, |
| 0xe3, 0x81, 0x93, 0xe3, 0x82, 0x93, 0xe3, 0x81, 0xab, 0xe3, 0x81, 0xa1, 0xe3, 0x81, 0xaf, 0xe4, 0xb8, 0x96, 0xe7, 0x95, 0x8c, 0x00, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderData(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| e.Data([]byte{0x10, 0x20, 0x30, 0xaa, 0xbb, 0xcc}) |
| expected, got := []byte{ |
| 0x06, 0x00, 0x00, 0x00, |
| 0x10, 0x20, 0x30, 0xaa, 0xbb, 0xcc, |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderObject(t *testing.T) { |
| b := &bytes.Buffer{} |
| e := NewEncoder(b) |
| if err := e.Object(testObjA); err != nil { |
| t.Errorf("Encode gave unexpected error: %v", err) |
| } |
| if err := e.Object(testObjB); err != nil { |
| t.Errorf("Encode gave unexpected error: %v", err) |
| } |
| if err := e.Object(testObjA); err != nil { |
| t.Errorf("Encode gave unexpected error: %v", err) |
| } |
| if err := e.Object(nil); err != nil { |
| t.Errorf("Encode gave unexpected error: %v", err) |
| } |
| expected, got := []byte{ |
| 0x00, 0x00, |
| 0x0A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x07, 0x00, 0x00, 0x00, |
| 'O', 'b', 'j', 'e', 'c', 't', 'A', |
| |
| 0x01, 0x00, |
| 0x0B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x07, 0x00, 0x00, 0x00, |
| 'O', 'b', 'j', 'e', 'c', 't', 'B', |
| |
| 0x00, 0x00, |
| |
| byte(objectNil & 0xff), byte((objectNil >> 8) & 0xff), |
| }, b.Bytes() |
| if !bytes.Equal(expected, got) { |
| t.Errorf("Encode gave unexpected bytes. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func TestEncoderObjectUnknownTypeError(t *testing.T) { |
| e := NewEncoder(ioutil.Discard) |
| expected := unknownType{testObjC} |
| if err := e.Object(testObjC); err != expected { |
| t.Errorf("Encode gave unexpected error. Expected: %v, got: %v", expected, err) |
| } |
| } |
| |
| func TestUnknownTypeErrorError(t *testing.T) { |
| expected := "Unknown type *binary.testObjectC encountered in binary.Encoder" |
| got := unknownType{&testObjectC{}}.Error() |
| if expected != got { |
| t.Errorf("Error() did not return expected result. Expected: %v, got: %v", expected, got) |
| } |
| } |
| |
| func BenchmarkEncoderObject(b *testing.B) { |
| encoders := make([]*Encoder, b.N) |
| for i := range encoders { |
| encoders[i] = NewEncoder(ioutil.Discard) |
| } |
| b.ResetTimer() |
| |
| for _, e := range encoders { |
| e.Object(testObjA) |
| e.Object(testObjB) |
| e.Object(testObjA) |
| e.Object(testObjB) |
| } |
| } |
