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This commit is contained in:
Eric Chiang 2016-08-05 09:51:37 -07:00
parent df258306dc
commit ad6af58003
15 changed files with 1844 additions and 2 deletions
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hash: 66d8717b42e620d52ceec62e7cb3f2bc23f21bfe35547587338d85564bd330c9
updated: 2016-07-31T12:19:29.812965492-07:00
hash: 2b694ffd26e854f519064b43f437545dfb7cfdc437b3890552dc1f6e7955a2b5
updated: 2016-08-03T23:07:24.402853601-07:00
imports:
- name: github.com/ericchiang/oidc
version: 69fec81d167d815f4f455c741b2a94ffaf547ed2
@ -16,6 +16,11 @@ imports:
version: e7e23673cac3f529f49e22f94e4af6d12bb49dba
- name: github.com/inconshreveable/mousetrap
version: 76626ae9c91c4f2a10f34cad8ce83ea42c93bb75
- name: github.com/kylelemons/godebug
version: eadb3ce320cbab8393bea5ca17bebac3f78a021b
subpackages:
- diff
- pretty
- name: github.com/mitchellh/go-homedir
version: 756f7b183b7ab78acdbbee5c7f392838ed459dda
- name: github.com/pquerna/cachecontrol

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language: go
go:
- 1.6
- tip

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Apache License
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http://www.apache.org/licenses/
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Pretty Printing for Go
======================
[![godebug build status][ciimg]][ci]
Have you ever wanted to get a pretty-printed version of a Go data structure,
complete with indentation? I have found this especially useful in unit tests
and in debugging my code, and thus godebug was born!
[ciimg]: https://travis-ci.org/kylelemons/godebug.svg?branch=master
[ci]: https://travis-ci.org/kylelemons/godebug
Quick Examples
--------------
By default, pretty will write out a very compact representation of a data structure.
From the [Print example][printex]:
```
{Name: "Spaceship Heart of Gold",
Crew: {Arthur Dent: "Along for the Ride",
Ford Prefect: "A Hoopy Frood",
Trillian: "Human",
Zaphod Beeblebrox: "Galactic President"},
Androids: 1,
Stolen: true}
```
It can also produce a much more verbose, one-item-per-line representation suitable for
[computing diffs][diffex]. See the documentation for more examples and customization.
[printex]: https://godoc.org/github.com/kylelemons/godebug/pretty#example-Print
[diffex]: https://godoc.org/github.com/kylelemons/godebug/pretty#example-Compare
Documentation
-------------
Documentation for this package is available at [godoc.org][doc]:
* Pretty: [![godoc for godebug/pretty][prettyimg]][prettydoc]
* Diff: [![godoc for godebug/diff][diffimg]][diffdoc]
[doc]: https://godoc.org/
[prettyimg]: https://godoc.org/github.com/kylelemons/godebug/pretty?status.png
[prettydoc]: https://godoc.org/github.com/kylelemons/godebug/pretty
[diffimg]: https://godoc.org/github.com/kylelemons/godebug/diff?status.png
[diffdoc]: https://godoc.org/github.com/kylelemons/godebug/diff
Installation
------------
These packages are available via `go get`:
```bash
$ go get -u github.com/kylelemons/godebug/{pretty,diff}
```
Other Packages
--------------
If `godebug/pretty` is not granular enough, I highly recommend
checking out [go-spew][spew].
[spew]: http://godoc.org/github.com/davecgh/go-spew/spew

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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 diff implements a linewise diff algorithm.
package diff
import (
"bytes"
"fmt"
"strings"
)
// Chunk represents a piece of the diff. A chunk will not have both added and
// deleted lines. Equal lines are always after any added or deleted lines.
// A Chunk may or may not have any lines in it, especially for the first or last
// chunk in a computation.
type Chunk struct {
Added []string
Deleted []string
Equal []string
}
// Diff returns a string containing a line-by-line unified diff of the linewise
// changes required to make A into B. Each line is prefixed with '+', '-', or
// ' ' to indicate if it should be added, removed, or is correct respectively.
func Diff(A, B string) string {
aLines := strings.Split(A, "\n")
bLines := strings.Split(B, "\n")
chunks := DiffChunks(aLines, bLines)
buf := new(bytes.Buffer)
for _, c := range chunks {
for _, line := range c.Added {
fmt.Fprintf(buf, "+%s\n", line)
}
for _, line := range c.Deleted {
fmt.Fprintf(buf, "-%s\n", line)
}
for _, line := range c.Equal {
fmt.Fprintf(buf, " %s\n", line)
}
}
return strings.TrimRight(buf.String(), "\n")
}
// DiffChunks uses an O(D(N+M)) shortest-edit-script algorithm
// to compute the edits required from A to B and returns the
// edit chunks.
func DiffChunks(A, B []string) []Chunk {
// algorithm: http://www.xmailserver.org/diff2.pdf
N, M := len(A), len(B)
MAX := N + M
V := make([]int, 2*MAX+1)
Vs := make([][]int, 0, 8)
var D int
dLoop:
for D = 0; D <= MAX; D++ {
for k := -D; k <= D; k += 2 {
var x int
if k == -D || (k != D && V[MAX+k-1] < V[MAX+k+1]) {
x = V[MAX+k+1]
} else {
x = V[MAX+k-1] + 1
}
y := x - k
for x < N && y < M && A[x] == B[y] {
x++
y++
}
V[MAX+k] = x
if x >= N && y >= M {
Vs = append(Vs, append(make([]int, 0, len(V)), V...))
break dLoop
}
}
Vs = append(Vs, append(make([]int, 0, len(V)), V...))
}
if D == 0 {
return nil
}
chunks := make([]Chunk, D+1)
x, y := N, M
for d := D; d > 0; d-- {
V := Vs[d]
k := x - y
insert := k == -d || (k != d && V[MAX+k-1] < V[MAX+k+1])
x1 := V[MAX+k]
var x0, xM, kk int
if insert {
kk = k + 1
x0 = V[MAX+kk]
xM = x0
} else {
kk = k - 1
x0 = V[MAX+kk]
xM = x0 + 1
}
y0 := x0 - kk
var c Chunk
if insert {
c.Added = B[y0:][:1]
} else {
c.Deleted = A[x0:][:1]
}
if xM < x1 {
c.Equal = A[xM:][:x1-xM]
}
x, y = x0, y0
chunks[d] = c
}
if x > 0 {
chunks[0].Equal = A[:x]
}
return chunks
}

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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 diff
import (
"fmt"
"reflect"
"strings"
"testing"
)
func TestDiff(t *testing.T) {
tests := []struct {
desc string
A, B []string
chunks []Chunk
}{
{
desc: "constitution",
A: []string{
"We the People of the United States, in Order to form a more perfect Union,",
"establish Justice, insure domestic Tranquility, provide for the common defence,",
"and secure the Blessings of Liberty to ourselves",
"and our Posterity, do ordain and establish this Constitution for the United",
"States of America.",
},
B: []string{
"We the People of the United States, in Order to form a more perfect Union,",
"establish Justice, insure domestic Tranquility, provide for the common defence,",
"promote the general Welfare, and secure the Blessings of Liberty to ourselves",
"and our Posterity, do ordain and establish this Constitution for the United",
"States of America.",
},
chunks: []Chunk{
0: {
Equal: []string{
"We the People of the United States, in Order to form a more perfect Union,",
"establish Justice, insure domestic Tranquility, provide for the common defence,",
},
},
1: {
Deleted: []string{
"and secure the Blessings of Liberty to ourselves",
},
},
2: {
Added: []string{
"promote the general Welfare, and secure the Blessings of Liberty to ourselves",
},
Equal: []string{
"and our Posterity, do ordain and establish this Constitution for the United",
"States of America.",
},
},
},
},
}
for _, test := range tests {
got := DiffChunks(test.A, test.B)
if got, want := len(got), len(test.chunks); got != want {
t.Errorf("%s: edit distance = %v, want %v", test.desc, got-1, want-1)
continue
}
for i := range got {
got, want := got[i], test.chunks[i]
if got, want := got.Added, want.Added; !reflect.DeepEqual(got, want) {
t.Errorf("%s[%d]: Added = %v, want %v", test.desc, i, got, want)
}
if got, want := got.Deleted, want.Deleted; !reflect.DeepEqual(got, want) {
t.Errorf("%s[%d]: Deleted = %v, want %v", test.desc, i, got, want)
}
if got, want := got.Equal, want.Equal; !reflect.DeepEqual(got, want) {
t.Errorf("%s[%d]: Equal = %v, want %v", test.desc, i, got, want)
}
}
}
}
func ExampleDiff() {
constitution := strings.TrimSpace(`
We the People of the United States, in Order to form a more perfect Union,
establish Justice, insure domestic Tranquility, provide for the common defence,
promote the general Welfare, and secure the Blessings of Liberty to ourselves
and our Posterity, do ordain and establish this Constitution for the United
States of America.
`)
got := strings.TrimSpace(`
:wq
We the People of the United States, in Order to form a more perfect Union,
establish Justice, insure domestic Tranquility, provide for the common defence,
and secure the Blessings of Liberty to ourselves
and our Posterity, do ordain and establish this Constitution for the United
States of America.
`)
fmt.Println(Diff(got, constitution))
// Output:
// -:wq
// We the People of the United States, in Order to form a more perfect Union,
// establish Justice, insure domestic Tranquility, provide for the common defence,
// -and secure the Blessings of Liberty to ourselves
// +promote the general Welfare, and secure the Blessings of Liberty to ourselves
// and our Posterity, do ordain and establish this Constitution for the United
// States of America.
}

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*.test
*.bench
*.golden
*.txt
*.prof

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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty pretty-prints Go structures.
//
// This package uses reflection to examine a Go value and can
// print out in a nice, aligned fashion. It supports three
// modes (normal, compact, and extended) for advanced use.
//
// See the Reflect and Print examples for what the output looks like.
package pretty
// TODO:
// - Catch cycles

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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty_test
import (
"fmt"
"github.com/kylelemons/godebug/pretty"
)
func ExampleConfig_Sprint() {
type Pair [2]int
type Map struct {
Name string
Players map[string]Pair
Obstacles map[Pair]string
}
m := Map{
Name: "Rock Creek",
Players: map[string]Pair{
"player1": {1, 3},
"player2": {0, -1},
},
Obstacles: map[Pair]string{
Pair{0, 0}: "rock",
Pair{2, 1}: "pond",
Pair{1, 1}: "stream",
Pair{0, 1}: "stream",
},
}
// Specific output formats
compact := &pretty.Config{
Compact: true,
}
diffable := &pretty.Config{
Diffable: true,
}
// Print out a summary
fmt.Printf("Players: %s\n", compact.Sprint(m.Players))
// Print diffable output
fmt.Printf("Map State:\n%s", diffable.Sprint(m))
// Output:
// Players: {player1:[1,3],player2:[0,-1]}
// Map State:
// {
// Name: "Rock Creek",
// Players: {
// player1: [
// 1,
// 3,
// ],
// player2: [
// 0,
// -1,
// ],
// },
// Obstacles: {
// [0,0]: "rock",
// [0,1]: "stream",
// [1,1]: "stream",
// [2,1]: "pond",
// },
// }
}
func ExamplePrint() {
type ShipManifest struct {
Name string
Crew map[string]string
Androids int
Stolen bool
}
manifest := &ShipManifest{
Name: "Spaceship Heart of Gold",
Crew: map[string]string{
"Zaphod Beeblebrox": "Galactic President",
"Trillian": "Human",
"Ford Prefect": "A Hoopy Frood",
"Arthur Dent": "Along for the Ride",
},
Androids: 1,
Stolen: true,
}
pretty.Print(manifest)
// Output:
// {Name: "Spaceship Heart of Gold",
// Crew: {Arthur Dent: "Along for the Ride",
// Ford Prefect: "A Hoopy Frood",
// Trillian: "Human",
// Zaphod Beeblebrox: "Galactic President"},
// Androids: 1,
// Stolen: true}
}
var t = struct {
Errorf func(string, ...interface{})
}{
Errorf: func(format string, args ...interface{}) {
fmt.Println(fmt.Sprintf(format, args...) + "\n")
},
}
func ExampleCompare_testing() {
// Code under test:
type ShipManifest struct {
Name string
Crew map[string]string
Androids int
Stolen bool
}
// AddCrew tries to add the given crewmember to the manifest.
AddCrew := func(m *ShipManifest, name, title string) {
if m.Crew == nil {
m.Crew = make(map[string]string)
}
m.Crew[title] = name
}
// Test function:
tests := []struct {
desc string
before *ShipManifest
name, title string
after *ShipManifest
}{
{
desc: "add first",
before: &ShipManifest{},
name: "Zaphod Beeblebrox",
title: "Galactic President",
after: &ShipManifest{
Crew: map[string]string{
"Zaphod Beeblebrox": "Galactic President",
},
},
},
{
desc: "add another",
before: &ShipManifest{
Crew: map[string]string{
"Zaphod Beeblebrox": "Galactic President",
},
},
name: "Trillian",
title: "Human",
after: &ShipManifest{
Crew: map[string]string{
"Zaphod Beeblebrox": "Galactic President",
"Trillian": "Human",
},
},
},
{
desc: "overwrite",
before: &ShipManifest{
Crew: map[string]string{
"Zaphod Beeblebrox": "Galactic President",
},
},
name: "Zaphod Beeblebrox",
title: "Just this guy, you know?",
after: &ShipManifest{
Crew: map[string]string{
"Zaphod Beeblebrox": "Just this guy, you know?",
},
},
},
}
for _, test := range tests {
AddCrew(test.before, test.name, test.title)
if diff := pretty.Compare(test.before, test.after); diff != "" {
t.Errorf("%s: post-AddCrew diff: (-got +want)\n%s", test.desc, diff)
}
}
// Output:
// add first: post-AddCrew diff: (-got +want)
// {
// Name: "",
// Crew: {
// - Galactic President: "Zaphod Beeblebrox",
// + Zaphod Beeblebrox: "Galactic President",
// },
// Androids: 0,
// Stolen: false,
// }
//
// add another: post-AddCrew diff: (-got +want)
// {
// Name: "",
// Crew: {
// - Human: "Trillian",
// + Trillian: "Human",
// Zaphod Beeblebrox: "Galactic President",
// },
// Androids: 0,
// Stolen: false,
// }
//
// overwrite: post-AddCrew diff: (-got +want)
// {
// Name: "",
// Crew: {
// - Just this guy, you know?: "Zaphod Beeblebrox",
// - Zaphod Beeblebrox: "Galactic President",
// + Zaphod Beeblebrox: "Just this guy, you know?",
// },
// Androids: 0,
// Stolen: false,
// }
}
func ExampleCompare_debugging() {
type ShipManifest struct {
Name string
Crew map[string]string
Androids int
Stolen bool
}
reported := &ShipManifest{
Name: "Spaceship Heart of Gold",
Crew: map[string]string{
"Zaphod Beeblebrox": "Galactic President",
"Trillian": "Human",
"Ford Prefect": "A Hoopy Frood",
"Arthur Dent": "Along for the Ride",
},
Androids: 1,
Stolen: true,
}
expected := &ShipManifest{
Name: "Spaceship Heart of Gold",
Crew: map[string]string{
"Trillian": "Human",
"Rowan Artosok": "Captain",
},
Androids: 1,
Stolen: false,
}
fmt.Println(pretty.Compare(reported, expected))
// Output:
// {
// Name: "Spaceship Heart of Gold",
// Crew: {
// - Arthur Dent: "Along for the Ride",
// - Ford Prefect: "A Hoopy Frood",
// + Rowan Artosok: "Captain",
// Trillian: "Human",
// - Zaphod Beeblebrox: "Galactic President",
// },
// Androids: 1,
// - Stolen: true,
// + Stolen: false,
// }
}

116
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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty
import (
"bytes"
"fmt"
"io"
"reflect"
"github.com/kylelemons/godebug/diff"
)
// A Config represents optional configuration parameters for formatting.
//
// Some options, notably ShortList, dramatically increase the overhead
// of pretty-printing a value.
type Config struct {
// Verbosity options
Compact bool // One-line output. Overrides Diffable.
Diffable bool // Adds extra newlines for more easily diffable output.
// Field and value options
IncludeUnexported bool // Include unexported fields in output
PrintStringers bool // Call String on a fmt.Stringer
PrintTextMarshalers bool // Call MarshalText on an encoding.TextMarshaler
SkipZeroFields bool // Skip struct fields that have a zero value.
// Output transforms
ShortList int // Maximum character length for short lists if nonzero.
}
// Default Config objects
var (
// CompareConfig is the default configuration used for Compare.
CompareConfig = &Config{
Diffable: true,
IncludeUnexported: true,
}
// DefaultConfig is the default configuration used for all other top-level functions.
DefaultConfig = &Config{}
)
func (cfg *Config) fprint(buf *bytes.Buffer, vals ...interface{}) {
for i, val := range vals {
if i > 0 {
buf.WriteByte('\n')
}
cfg.val2node(reflect.ValueOf(val)).WriteTo(buf, "", cfg)
}
}
// Print writes the DefaultConfig representation of the given values to standard output.
func Print(vals ...interface{}) {
DefaultConfig.Print(vals...)
}
// Print writes the configured presentation of the given values to standard output.
func (cfg *Config) Print(vals ...interface{}) {
fmt.Println(cfg.Sprint(vals...))
}
// Sprint returns a string representation of the given value according to the DefaultConfig.
func Sprint(vals ...interface{}) string {
return DefaultConfig.Sprint(vals...)
}
// Sprint returns a string representation of the given value according to cfg.
func (cfg *Config) Sprint(vals ...interface{}) string {
buf := new(bytes.Buffer)
cfg.fprint(buf, vals...)
return buf.String()
}
// Fprint writes the representation of the given value to the writer according to the DefaultConfig.
func Fprint(w io.Writer, vals ...interface{}) (n int64, err error) {
return DefaultConfig.Fprint(w, vals...)
}
// Fprint writes the representation of the given value to the writer according to the cfg.
func (cfg *Config) Fprint(w io.Writer, vals ...interface{}) (n int64, err error) {
buf := new(bytes.Buffer)
cfg.fprint(buf, vals...)
return buf.WriteTo(w)
}
// Compare returns a string containing a line-by-line unified diff of the
// values in got and want, using the CompareConfig.
//
// Each line in the output is prefixed with '+', '-', or ' ' to indicate if it
// should be added to, removed from, or is correct for the "got" value with
// respect to the "want" value.
func Compare(got, want interface{}) string {
return CompareConfig.Compare(got, want)
}
// Compare returns a string containing a line-by-line unified diff of the
// values in got and want according to the cfg.
func (cfg *Config) Compare(got, want interface{}) string {
diffCfg := *cfg
diffCfg.Diffable = true
return diff.Diff(cfg.Sprint(got), cfg.Sprint(want))
}

128
vendor/github.com/kylelemons/godebug/pretty/public_test.go generated vendored Normal file
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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty
import (
"testing"
)
func TestDiff(t *testing.T) {
type example struct {
Name string
Age int
Friends []string
}
tests := []struct {
desc string
got, want interface{}
diff string
}{
{
desc: "basic struct",
got: example{
Name: "Zaphd",
Age: 42,
Friends: []string{
"Ford Prefect",
"Trillian",
"Marvin",
},
},
want: example{
Name: "Zaphod",
Age: 42,
Friends: []string{
"Ford Prefect",
"Trillian",
},
},
diff: ` {
- Name: "Zaphd",
+ Name: "Zaphod",
Age: 42,
Friends: [
"Ford Prefect",
"Trillian",
- "Marvin",
],
}`,
},
}
for _, test := range tests {
if got, want := Compare(test.got, test.want), test.diff; got != want {
t.Errorf("%s:", test.desc)
t.Errorf(" got: %q", got)
t.Errorf(" want: %q", want)
}
}
}
func TestSkipZeroFields(t *testing.T) {
type example struct {
Name string
Species string
Age int
Friends []string
}
tests := []struct {
desc string
got, want interface{}
diff string
}{
{
desc: "basic struct",
got: example{
Name: "Zaphd",
Species: "Betelgeusian",
Age: 42,
},
want: example{
Name: "Zaphod",
Species: "Betelgeusian",
Age: 42,
Friends: []string{
"Ford Prefect",
"Trillian",
"",
},
},
diff: ` {
- Name: "Zaphd",
+ Name: "Zaphod",
Species: "Betelgeusian",
Age: 42,
+ Friends: [
+ "Ford Prefect",
+ "Trillian",
+ "",
+ ],
}`,
},
}
cfg := *CompareConfig
cfg.SkipZeroFields = true
for _, test := range tests {
if got, want := cfg.Compare(test.got, test.want), test.diff; got != want {
t.Errorf("%s:", test.desc)
t.Errorf(" got: %q", got)
t.Errorf(" want: %q", want)
}
}
}

114
vendor/github.com/kylelemons/godebug/pretty/reflect.go generated vendored Normal file
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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty
import (
"encoding"
"fmt"
"reflect"
"sort"
)
func isZeroVal(val reflect.Value) bool {
if !val.CanInterface() {
return false
}
z := reflect.Zero(val.Type()).Interface()
return reflect.DeepEqual(val.Interface(), z)
}
func (c *Config) val2node(val reflect.Value) node {
// TODO(kevlar): pointer tracking?
if !val.IsValid() {
return rawVal("nil")
}
if val.CanInterface() {
v := val.Interface()
if s, ok := v.(fmt.Stringer); ok && c.PrintStringers {
return stringVal(s.String())
}
if t, ok := v.(encoding.TextMarshaler); ok && c.PrintTextMarshalers {
if raw, err := t.MarshalText(); err == nil { // if NOT an error
return stringVal(string(raw))
}
}
}
switch kind := val.Kind(); kind {
case reflect.Ptr, reflect.Interface:
if val.IsNil() {
return rawVal("nil")
}
return c.val2node(val.Elem())
case reflect.String:
return stringVal(val.String())
case reflect.Slice, reflect.Array:
n := list{}
length := val.Len()
for i := 0; i < length; i++ {
n = append(n, c.val2node(val.Index(i)))
}
return n
case reflect.Map:
n := keyvals{}
keys := val.MapKeys()
for _, key := range keys {
// TODO(kevlar): Support arbitrary type keys?
n = append(n, keyval{compactString(c.val2node(key)), c.val2node(val.MapIndex(key))})
}
sort.Sort(n)
return n
case reflect.Struct:
n := keyvals{}
typ := val.Type()
fields := typ.NumField()
for i := 0; i < fields; i++ {
sf := typ.Field(i)
if !c.IncludeUnexported && sf.PkgPath != "" {
continue
}
field := val.Field(i)
if c.SkipZeroFields && isZeroVal(field) {
continue
}
n = append(n, keyval{sf.Name, c.val2node(field)})
}
return n
case reflect.Bool:
if val.Bool() {
return rawVal("true")
}
return rawVal("false")
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return rawVal(fmt.Sprintf("%d", val.Int()))
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
return rawVal(fmt.Sprintf("%d", val.Uint()))
case reflect.Uintptr:
return rawVal(fmt.Sprintf("0x%X", val.Uint()))
case reflect.Float32, reflect.Float64:
return rawVal(fmt.Sprintf("%v", val.Float()))
case reflect.Complex64, reflect.Complex128:
return rawVal(fmt.Sprintf("%v", val.Complex()))
}
// Fall back to the default %#v if we can
if val.CanInterface() {
return rawVal(fmt.Sprintf("%#v", val.Interface()))
}
return rawVal(val.String())
}

168
vendor/github.com/kylelemons/godebug/pretty/reflect_test.go generated vendored Normal file
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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty
import (
"reflect"
"testing"
"time"
)
func TestVal2nodeDefault(t *testing.T) {
tests := []struct {
desc string
raw interface{}
want node
}{
{
desc: "nil",
raw: nil,
want: rawVal("nil"),
},
{
desc: "nil ptr",
raw: (*int)(nil),
want: rawVal("nil"),
},
{
desc: "nil slice",
raw: []string(nil),
want: list{},
},
{
desc: "nil map",
raw: map[string]string(nil),
want: keyvals{},
},
{
desc: "string",
raw: "zaphod",
want: stringVal("zaphod"),
},
{
desc: "slice",
raw: []string{"a", "b"},
want: list{stringVal("a"), stringVal("b")},
},
{
desc: "map",
raw: map[string]string{
"zaphod": "beeblebrox",
"ford": "prefect",
},
want: keyvals{
{"ford", stringVal("prefect")},
{"zaphod", stringVal("beeblebrox")},
},
},
{
desc: "map of [2]int",
raw: map[[2]int]string{
[2]int{-1, 2}: "school",
[2]int{0, 0}: "origin",
[2]int{1, 3}: "home",
},
want: keyvals{
{"[-1,2]", stringVal("school")},
{"[0,0]", stringVal("origin")},
{"[1,3]", stringVal("home")},
},
},
{
desc: "struct",
raw: struct{ Zaphod, Ford string }{"beeblebrox", "prefect"},
want: keyvals{
{"Zaphod", stringVal("beeblebrox")},
{"Ford", stringVal("prefect")},
},
},
{
desc: "int",
raw: 3,
want: rawVal("3"),
},
}
for _, test := range tests {
if got, want := DefaultConfig.val2node(reflect.ValueOf(test.raw)), test.want; !reflect.DeepEqual(got, want) {
t.Errorf("%s: got %#v, want %#v", test.desc, got, want)
}
}
}
func TestVal2node(t *testing.T) {
tests := []struct {
desc string
raw interface{}
cfg *Config
want node
}{
{
desc: "struct default",
raw: struct{ Zaphod, Ford, foo string }{"beeblebrox", "prefect", "BAD"},
cfg: DefaultConfig,
want: keyvals{
{"Zaphod", stringVal("beeblebrox")},
{"Ford", stringVal("prefect")},
},
},
{
desc: "struct w/ IncludeUnexported",
raw: struct{ Zaphod, Ford, foo string }{"beeblebrox", "prefect", "GOOD"},
cfg: &Config{
IncludeUnexported: true,
},
want: keyvals{
{"Zaphod", stringVal("beeblebrox")},
{"Ford", stringVal("prefect")},
{"foo", stringVal("GOOD")},
},
},
{
desc: "time default",
raw: struct{ Date time.Time }{time.Unix(1234567890, 0).UTC()},
cfg: DefaultConfig,
want: keyvals{
{"Date", keyvals{}},
},
},
{
desc: "time w/ PrintTextMarshalers",
raw: struct{ Date time.Time }{time.Unix(1234567890, 0).UTC()},
cfg: &Config{
PrintTextMarshalers: true,
},
want: keyvals{
{"Date", stringVal("2009-02-13T23:31:30Z")},
},
},
{
desc: "time w/ PrintStringers",
raw: struct{ Date time.Time }{time.Unix(1234567890, 0).UTC()},
cfg: &Config{
PrintStringers: true,
},
want: keyvals{
{"Date", stringVal("2009-02-13 23:31:30 +0000 UTC")},
},
},
}
for _, test := range tests {
if got, want := test.cfg.val2node(reflect.ValueOf(test.raw)), test.want; !reflect.DeepEqual(got, want) {
t.Errorf("%s: got %#v, want %#v", test.desc, got, want)
}
}
}

160
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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty
import (
"bytes"
"strconv"
"strings"
)
type node interface {
WriteTo(w *bytes.Buffer, indent string, cfg *Config)
}
func compactString(n node) string {
switch k := n.(type) {
case stringVal:
return string(k)
case rawVal:
return string(k)
}
buf := new(bytes.Buffer)
n.WriteTo(buf, "", &Config{Compact: true})
return buf.String()
}
type stringVal string
func (str stringVal) WriteTo(w *bytes.Buffer, indent string, cfg *Config) {
w.WriteString(strconv.Quote(string(str)))
}
type rawVal string
func (r rawVal) WriteTo(w *bytes.Buffer, indent string, cfg *Config) {
w.WriteString(string(r))
}
type keyval struct {
key string
val node
}
type keyvals []keyval
func (l keyvals) Len() int { return len(l) }
func (l keyvals) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
func (l keyvals) Less(i, j int) bool { return l[i].key < l[j].key }
func (l keyvals) WriteTo(w *bytes.Buffer, indent string, cfg *Config) {
w.WriteByte('{')
switch {
case cfg.Compact:
// All on one line:
for i, kv := range l {
if i > 0 {
w.WriteByte(',')
}
w.WriteString(kv.key)
w.WriteByte(':')
kv.val.WriteTo(w, indent, cfg)
}
case cfg.Diffable:
w.WriteByte('\n')
inner := indent + " "
// Each value gets its own line:
for _, kv := range l {
w.WriteString(inner)
w.WriteString(kv.key)
w.WriteString(": ")
kv.val.WriteTo(w, inner, cfg)
w.WriteString(",\n")
}
w.WriteString(indent)
default:
keyWidth := 0
for _, kv := range l {
if kw := len(kv.key); kw > keyWidth {
keyWidth = kw
}
}
alignKey := indent + " "
alignValue := strings.Repeat(" ", keyWidth)
inner := alignKey + alignValue + " "
// First and last line shared with bracket:
for i, kv := range l {
if i > 0 {
w.WriteString(",\n")
w.WriteString(alignKey)
}
w.WriteString(kv.key)
w.WriteString(": ")
w.WriteString(alignValue[len(kv.key):])
kv.val.WriteTo(w, inner, cfg)
}
}
w.WriteByte('}')
}
type list []node
func (l list) WriteTo(w *bytes.Buffer, indent string, cfg *Config) {
if max := cfg.ShortList; max > 0 {
short := compactString(l)
if len(short) <= max {
w.WriteString(short)
return
}
}
w.WriteByte('[')
switch {
case cfg.Compact:
// All on one line:
for i, v := range l {
if i > 0 {
w.WriteByte(',')
}
v.WriteTo(w, indent, cfg)
}
case cfg.Diffable:
w.WriteByte('\n')
inner := indent + " "
// Each value gets its own line:
for _, v := range l {
w.WriteString(inner)
v.WriteTo(w, inner, cfg)
w.WriteString(",\n")
}
w.WriteString(indent)
default:
inner := indent + " "
// First and last line shared with bracket:
for i, v := range l {
if i > 0 {
w.WriteString(",\n")
w.WriteString(inner)
}
v.WriteTo(w, inner, cfg)
}
}
w.WriteByte(']')
}

316
vendor/github.com/kylelemons/godebug/pretty/structure_test.go generated vendored Normal file
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// Copyright 2013 Google Inc. All rights reserved.
//
// 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 pretty
import (
"bytes"
"strings"
"testing"
)
func TestWriteTo(t *testing.T) {
tests := []struct {
desc string
node node
// All strings have a leading newline trimmed before comparison:
normal string
diffable string
}{
{
desc: "string",
node: stringVal("zaphod"),
normal: `"zaphod"`,
diffable: `"zaphod"`,
},
{
desc: "raw",
node: rawVal("42"),
normal: `42`,
diffable: `42`,
},
{
desc: "keyvals",
node: keyvals{
{"name", stringVal("zaphod")},
{"age", rawVal("42")},
},
normal: `
{name: "zaphod",
age: 42}`,
diffable: `
{
name: "zaphod",
age: 42,
}`,
},
{
desc: "empty list",
node: list{},
normal: `
[]`,
diffable: `
[
]`,
},
{
desc: "empty nested list",
node: list{list{}},
normal: `
[[]]`,
diffable: `
[
[
],
]`,
},
{
desc: "list",
node: list{
stringVal("zaphod"),
rawVal("42"),
},
normal: `
["zaphod",
42]`,
diffable: `
[
"zaphod",
42,
]`,
},
{
desc: "empty keyvals",
node: keyvals{},
normal: `
{}`,
diffable: `
{
}`,
},
{
desc: "empty nested keyvals",
node: keyvals{{"k", keyvals{}}},
normal: `
{k: {}}`,
diffable: `
{
k: {
},
}`,
},
{
desc: "nested",
node: list{
stringVal("first"),
list{rawVal("1"), rawVal("2"), rawVal("3")},
keyvals{
{"trillian", keyvals{
{"race", stringVal("human")},
{"age", rawVal("36")},
}},
{"zaphod", keyvals{
{"occupation", stringVal("president of the galaxy")},
{"features", stringVal("two heads")},
}},
},
keyvals{},
},
normal: `
["first",
[1,
2,
3],
{trillian: {race: "human",
age: 36},
zaphod: {occupation: "president of the galaxy",
features: "two heads"}},
{}]`,
diffable: `
[
"first",
[
1,
2,
3,
],
{
trillian: {
race: "human",
age: 36,
},
zaphod: {
occupation: "president of the galaxy",
features: "two heads",
},
},
{
},
]`,
},
}
for _, test := range tests {
// For readability, we have a newline that won't be there in the output
test.normal = strings.TrimPrefix(test.normal, "\n")
test.diffable = strings.TrimPrefix(test.diffable, "\n")
buf := new(bytes.Buffer)
test.node.WriteTo(buf, "", &Config{})
if got, want := buf.String(), test.normal; got != want {
t.Errorf("%s: normal rendendered incorrectly\ngot:\n%s\nwant:\n%s", test.desc, got, want)
}
buf.Reset()
test.node.WriteTo(buf, "", &Config{Diffable: true})
if got, want := buf.String(), test.diffable; got != want {
t.Errorf("%s: diffable rendendered incorrectly\ngot:\n%s\nwant:\n%s", test.desc, got, want)
}
}
}
func TestCompactString(t *testing.T) {
tests := []struct {
node
compact string
}{
{
stringVal("abc"),
"abc",
},
{
rawVal("2"),
"2",
},
{
list{
rawVal("2"),
rawVal("3"),
},
"[2,3]",
},
{
keyvals{
{"name", stringVal("zaphod")},
{"age", rawVal("42")},
},
`{name:"zaphod",age:42}`,
},
{
list{
list{
rawVal("0"),
rawVal("1"),
rawVal("2"),
rawVal("3"),
},
list{
rawVal("1"),
rawVal("2"),
rawVal("3"),
rawVal("0"),
},
list{
rawVal("2"),
rawVal("3"),
rawVal("0"),
rawVal("1"),
},
},
`[[0,1,2,3],[1,2,3,0],[2,3,0,1]]`,
},
}
for _, test := range tests {
if got, want := compactString(test.node), test.compact; got != want {
t.Errorf("%#v: compact = %q, want %q", test.node, got, want)
}
}
}
func TestShortList(t *testing.T) {
cfg := &Config{
ShortList: 16,
}
tests := []struct {
node
want string
}{
{
list{
list{
rawVal("0"),
rawVal("1"),
rawVal("2"),
rawVal("3"),
},
list{
rawVal("1"),
rawVal("2"),
rawVal("3"),
rawVal("0"),
},
list{
rawVal("2"),
rawVal("3"),
rawVal("0"),
rawVal("1"),
},
},
`[[0,1,2,3],
[1,2,3,0],
[2,3,0,1]]`,
},
}
for _, test := range tests {
buf := new(bytes.Buffer)
test.node.WriteTo(buf, "", cfg)
if got, want := buf.String(), test.want; got != want {
t.Errorf("%#v: got:\n%s\nwant:\n%s", test.node, got, want)
}
}
}
var benchNode = keyvals{
{"list", list{
rawVal("0"),
rawVal("1"),
rawVal("2"),
rawVal("3"),
}},
{"keyvals", keyvals{
{"a", stringVal("b")},
{"c", stringVal("e")},
{"d", stringVal("f")},
}},
}
func benchOpts(b *testing.B, cfg *Config) {
buf := new(bytes.Buffer)
benchNode.WriteTo(buf, "", cfg)
b.SetBytes(int64(buf.Len()))
b.ResetTimer()
for i := 0; i < b.N; i++ {
buf.Reset()
benchNode.WriteTo(buf, "", cfg)
}
}
func BenchmarkWriteDefault(b *testing.B) { benchOpts(b, DefaultConfig) }
func BenchmarkWriteShortList(b *testing.B) { benchOpts(b, &Config{ShortList: 16}) }
func BenchmarkWriteCompact(b *testing.B) { benchOpts(b, &Config{Compact: true}) }
func BenchmarkWriteDiffable(b *testing.B) { benchOpts(b, &Config{Diffable: true}) }