| // Copyright 2015 The LUCI 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 cmpbin |
| |
| import ( |
| "bytes" |
| "testing" |
| |
| . "github.com/smartystreets/goconvey/convey" |
| ) |
| |
| func TestInvertible(t *testing.T) { |
| t.Parallel() |
| |
| Convey("Test InvertibleByteBuffer", t, func() { |
| inv := Invertible(&bytes.Buffer{}) |
| |
| Convey("normal writing", func() { |
| Convey("Write", func() { |
| n, err := inv.Write([]byte("hello")) |
| So(err, ShouldBeNil) |
| So(n, ShouldEqual, 5) |
| So(inv.String(), ShouldEqual, "hello") |
| }) |
| Convey("WriteString", func() { |
| n, err := inv.WriteString("hello") |
| So(err, ShouldBeNil) |
| So(n, ShouldEqual, 5) |
| So(inv.String(), ShouldEqual, "hello") |
| }) |
| Convey("WriteByte", func() { |
| for i := byte('a'); i < 'f'; i++ { |
| err := inv.WriteByte(i) |
| So(err, ShouldBeNil) |
| } |
| So(inv.String(), ShouldEqual, "abcde") |
| |
| Convey("ReadByte", func() { |
| for i := 0; i < 5; i++ { |
| b, err := inv.ReadByte() |
| So(err, ShouldBeNil) |
| So(b, ShouldEqual, byte('a')+byte(i)) |
| } |
| }) |
| }) |
| }) |
| Convey("inverted writing", func() { |
| inv.SetInvert(true) |
| Convey("Write", func() { |
| n, err := inv.Write([]byte("hello")) |
| So(err, ShouldBeNil) |
| So(n, ShouldEqual, 5) |
| So(inv.String(), ShouldEqual, "\x97\x9a\x93\x93\x90") |
| }) |
| Convey("WriteString", func() { |
| n, err := inv.WriteString("hello") |
| So(err, ShouldBeNil) |
| So(n, ShouldEqual, 5) |
| So(inv.String(), ShouldEqual, "\x97\x9a\x93\x93\x90") |
| }) |
| Convey("WriteByte", func() { |
| for i := byte('a'); i < 'f'; i++ { |
| err := inv.WriteByte(i) |
| So(err, ShouldBeNil) |
| } |
| So(inv.String(), ShouldEqual, "\x9e\x9d\x9c\x9b\x9a") |
| |
| Convey("ReadByte", func() { |
| for i := 0; i < 5; i++ { |
| b, err := inv.ReadByte() |
| So(err, ShouldBeNil) |
| So(b, ShouldEqual, byte('a')+byte(i)) // inverted back to normal |
| } |
| }) |
| }) |
| }) |
| Convey("Toggleable", func() { |
| inv.SetInvert(true) |
| n, err := inv.Write([]byte("hello")) |
| So(err, ShouldBeNil) |
| inv.SetInvert(false) |
| n, err = inv.Write([]byte("hello")) |
| So(n, ShouldEqual, 5) |
| So(inv.String(), ShouldEqual, "\x97\x9a\x93\x93\x90hello") |
| }) |
| }) |
| } |