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Add tests and godebug to compare structs

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This commit is contained in:
Manuel de Brito Fontes 2017-01-13 10:26:13 -03:00
parent dbd368adf2
commit 64a5e43394
10 changed files with 865 additions and 9 deletions
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8
Godeps/Godeps.json generated
View file

@ -233,6 +233,14 @@
"ImportPath": "github.com/juju/ratelimit",
"Rev": "77ed1c8a01217656d2080ad51981f6e99adaa177"
},
{
"ImportPath": "github.com/kylelemons/godebug/diff",
"Rev": "d99083b96f422f8fd5a93bc02040acec769e178f"
},
{
"ImportPath": "github.com/kylelemons/godebug/pretty",
"Rev": "d99083b96f422f8fd5a93bc02040acec769e178f"
},
{
"ImportPath": "github.com/mailru/easyjson/buffer",
"Rev": "d5b7844b561a7bc640052f1b935f7b800330d7e0"

4
controllers/nginx/pkg/template/configmap.go
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@ -37,10 +37,6 @@ const (
// ReadConfig obtains the configuration defined by the user merged with the defaults.
func ReadConfig(conf *api.ConfigMap) config.Configuration {
if len(conf.Data) == 0 {
return config.NewDefault()
}
errors := make([]int, 0)
skipUrls := make([]string, 0)
whitelist := make([]string, 0)

11
controllers/nginx/pkg/template/configmap_test.go
View file

@ -17,7 +17,6 @@ limitations under the License.
package template
import (
"reflect"
"testing"
"github.com/kylelemons/godebug/pretty"
@ -63,17 +62,19 @@ func TestMergeConfigMapToStruct(t *testing.T) {
def.Resolver = h
to := ReadConfig(conf)
if !reflect.DeepEqual(def, to) {
t.Errorf("expected %v but retuned %v", def, to)
if diff := pretty.Compare(to, def); diff != "" {
t.Errorf("unexpected diff: (-got +want)\n%s", diff)
}
def = config.NewDefault()
def.Resolver = h
to = ReadConfig(&api.ConfigMap{})
if !reflect.DeepEqual(def, to) {
t.Errorf("expected %v but retuned %v", def, to)
if diff := pretty.Compare(to, def); diff != "" {
t.Errorf("unexpected diff: (-got +want)\n%s", diff)
}
def = config.NewDefault()
def.Resolver = h
def.WhitelistSourceRange = []string{"1.1.1.1/32"}
to = ReadConfig(&api.ConfigMap{
Data: map[string]string{

202
vendor/github.com/kylelemons/godebug/LICENSE generated vendored Normal file
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@ -0,0 +1,202 @@
Apache License
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http://www.apache.org/licenses/
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Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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186
vendor/github.com/kylelemons/godebug/diff/diff.go generated vendored Normal file
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@ -0,0 +1,186 @@
// 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
}
func (c *Chunk) empty() bool {
return len(c.Added) == 0 && len(c.Deleted) == 0 && len(c.Equal) == 0
}
// 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
// We'll need these quantities a lot.
alen, blen := len(a), len(b) // M, N
// At most, it will require len(a) deletions and len(b) additions
// to transform a into b.
maxPath := alen + blen // MAX
if maxPath == 0 {
// degenerate case: two empty lists are the same
return nil
}
// Store the endpoint of the path for diagonals.
// We store only the a index, because the b index on any diagonal
// (which we know during the loop below) is aidx-diag.
// endpoint[maxPath] represents the 0 diagonal.
//
// Stated differently:
// endpoint[d] contains the aidx of a furthest reaching path in diagonal d
endpoint := make([]int, 2*maxPath+1) // V
saved := make([][]int, 0, 8) // Vs
save := func() {
dup := make([]int, len(endpoint))
copy(dup, endpoint)
saved = append(saved, dup)
}
var editDistance int // D
dLoop:
for editDistance = 0; editDistance <= maxPath; editDistance++ {
// The 0 diag(onal) represents equality of a and b. Each diagonal to
// the left is numbered one lower, to the right is one higher, from
// -alen to +blen. Negative diagonals favor differences from a,
// positive diagonals favor differences from b. The edit distance to a
// diagonal d cannot be shorter than d itself.
//
// The iterations of this loop cover either odds or evens, but not both,
// If odd indices are inputs, even indices are outputs and vice versa.
for diag := -editDistance; diag <= editDistance; diag += 2 { // k
var aidx int // x
switch {
case diag == -editDistance:
// This is a new diagonal; copy from previous iter
aidx = endpoint[maxPath-editDistance+1] + 0
case diag == editDistance:
// This is a new diagonal; copy from previous iter
aidx = endpoint[maxPath+editDistance-1] + 1
case endpoint[maxPath+diag+1] > endpoint[maxPath+diag-1]:
// diagonal d+1 was farther along, so use that
aidx = endpoint[maxPath+diag+1] + 0
default:
// diagonal d-1 was farther (or the same), so use that
aidx = endpoint[maxPath+diag-1] + 1
}
// On diagonal d, we can compute bidx from aidx.
bidx := aidx - diag // y
// See how far we can go on this diagonal before we find a difference.
for aidx < alen && bidx < blen && a[aidx] == b[bidx] {
aidx++
bidx++
}
// Store the end of the current edit chain.
endpoint[maxPath+diag] = aidx
// If we've found the end of both inputs, we're done!
if aidx >= alen && bidx >= blen {
save() // save the final path
break dLoop
}
}
save() // save the current path
}
if editDistance == 0 {
return nil
}
chunks := make([]Chunk, editDistance+1)
x, y := alen, blen
for d := editDistance; d > 0; d-- {
endpoint := saved[d]
diag := x - y
insert := diag == -d || (diag != d && endpoint[maxPath+diag-1] < endpoint[maxPath+diag+1])
x1 := endpoint[maxPath+diag]
var x0, xM, kk int
if insert {
kk = diag + 1
x0 = endpoint[maxPath+kk]
xM = x0
} else {
kk = diag - 1
x0 = endpoint[maxPath+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]
}
if chunks[0].empty() {
chunks = chunks[1:]
}
if len(chunks) == 0 {
return nil
}
return chunks
}

5
vendor/github.com/kylelemons/godebug/pretty/.gitignore generated vendored Normal file
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@ -0,0 +1,5 @@
*.test
*.bench
*.golden
*.txt
*.prof

25
vendor/github.com/kylelemons/godebug/pretty/doc.go generated vendored Normal file
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@ -0,0 +1,25 @@
// 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

152
vendor/github.com/kylelemons/godebug/pretty/public.go generated vendored Normal file
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@ -0,0 +1,152 @@
// 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"
"net"
"reflect"
"time"
"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.
// Type-specific overrides
//
// Formatter maps a type to a function that will provide a one-line string
// representation of the input value. Conceptually:
// Formatter[reflect.TypeOf(v)](v) = "v as a string"
//
// Note that the first argument need not explicitly match the type, it must
// merely be callable with it.
//
// When processing an input value, if its type exists as a key in Formatter:
// 1) If the value is nil, no stringification is performed.
// This allows overriding of PrintStringers and PrintTextMarshalers.
// 2) The value will be called with the input as its only argument.
// The function must return a string as its first return value.
//
// In addition to func literals, two common values for this will be:
// fmt.Sprint (function) func Sprint(...interface{}) string
// Type.String (method) func (Type) String() string
//
// Note that neither of these work if the String method is a pointer
// method and the input will be provided as a value. In that case,
// use a function that calls .String on the formal value parameter.
Formatter map[reflect.Type]interface{}
}
// Default Config objects
var (
// DefaultFormatter is the default set of overrides for stringification.
DefaultFormatter = map[reflect.Type]interface{}{
reflect.TypeOf(time.Time{}): fmt.Sprint,
reflect.TypeOf(net.IP{}): fmt.Sprint,
reflect.TypeOf((*error)(nil)).Elem(): fmt.Sprint,
}
// CompareConfig is the default configuration used for Compare.
CompareConfig = &Config{
Diffable: true,
IncludeUnexported: true,
Formatter: DefaultFormatter,
}
// DefaultConfig is the default configuration used for all other top-level functions.
DefaultConfig = &Config{
Formatter: DefaultFormatter,
}
)
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))
}

121
vendor/github.com/kylelemons/godebug/pretty/reflect.go generated vendored Normal file
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@ -0,0 +1,121 @@
// 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 formatter, ok := c.Formatter[val.Type()]; ok {
if formatter != nil {
res := reflect.ValueOf(formatter).Call([]reflect.Value{val})
return rawVal(res[0].Interface().(string))
}
} else {
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())
}

160
vendor/github.com/kylelemons/godebug/pretty/structure.go generated vendored Normal file
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@ -0,0 +1,160 @@
// 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(']')
}