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mumbledj/vendor/github.com/BurntSushi/toml/encode_test.go
2016-06-21 09:05:20 -07:00

591 lines
14 KiB
Go

package toml
import (
"bytes"
"fmt"
"log"
"net"
"testing"
"time"
)
func TestEncodeRoundTrip(t *testing.T) {
type Config struct {
Age int
Cats []string
Pi float64
Perfection []int
DOB time.Time
Ipaddress net.IP
}
var inputs = Config{
13,
[]string{"one", "two", "three"},
3.145,
[]int{11, 2, 3, 4},
time.Now(),
net.ParseIP("192.168.59.254"),
}
var firstBuffer bytes.Buffer
e := NewEncoder(&firstBuffer)
err := e.Encode(inputs)
if err != nil {
t.Fatal(err)
}
var outputs Config
if _, err := Decode(firstBuffer.String(), &outputs); err != nil {
log.Printf("Could not decode:\n-----\n%s\n-----\n",
firstBuffer.String())
t.Fatal(err)
}
// could test each value individually, but I'm lazy
var secondBuffer bytes.Buffer
e2 := NewEncoder(&secondBuffer)
err = e2.Encode(outputs)
if err != nil {
t.Fatal(err)
}
if firstBuffer.String() != secondBuffer.String() {
t.Error(
firstBuffer.String(),
"\n\n is not identical to\n\n",
secondBuffer.String())
}
}
// XXX(burntsushi)
// I think these tests probably should be removed. They are good, but they
// ought to be obsolete by toml-test.
func TestEncode(t *testing.T) {
type Embedded struct {
Int int `toml:"_int"`
}
type NonStruct int
date := time.Date(2014, 5, 11, 20, 30, 40, 0, time.FixedZone("IST", 3600))
dateStr := "2014-05-11T19:30:40Z"
tests := map[string]struct {
input interface{}
wantOutput string
wantError error
}{
"bool field": {
input: struct {
BoolTrue bool
BoolFalse bool
}{true, false},
wantOutput: "BoolTrue = true\nBoolFalse = false\n",
},
"int fields": {
input: struct {
Int int
Int8 int8
Int16 int16
Int32 int32
Int64 int64
}{1, 2, 3, 4, 5},
wantOutput: "Int = 1\nInt8 = 2\nInt16 = 3\nInt32 = 4\nInt64 = 5\n",
},
"uint fields": {
input: struct {
Uint uint
Uint8 uint8
Uint16 uint16
Uint32 uint32
Uint64 uint64
}{1, 2, 3, 4, 5},
wantOutput: "Uint = 1\nUint8 = 2\nUint16 = 3\nUint32 = 4" +
"\nUint64 = 5\n",
},
"float fields": {
input: struct {
Float32 float32
Float64 float64
}{1.5, 2.5},
wantOutput: "Float32 = 1.5\nFloat64 = 2.5\n",
},
"string field": {
input: struct{ String string }{"foo"},
wantOutput: "String = \"foo\"\n",
},
"string field and unexported field": {
input: struct {
String string
unexported int
}{"foo", 0},
wantOutput: "String = \"foo\"\n",
},
"datetime field in UTC": {
input: struct{ Date time.Time }{date},
wantOutput: fmt.Sprintf("Date = %s\n", dateStr),
},
"datetime field as primitive": {
// Using a map here to fail if isStructOrMap() returns true for
// time.Time.
input: map[string]interface{}{
"Date": date,
"Int": 1,
},
wantOutput: fmt.Sprintf("Date = %s\nInt = 1\n", dateStr),
},
"array fields": {
input: struct {
IntArray0 [0]int
IntArray3 [3]int
}{[0]int{}, [3]int{1, 2, 3}},
wantOutput: "IntArray0 = []\nIntArray3 = [1, 2, 3]\n",
},
"slice fields": {
input: struct{ IntSliceNil, IntSlice0, IntSlice3 []int }{
nil, []int{}, []int{1, 2, 3},
},
wantOutput: "IntSlice0 = []\nIntSlice3 = [1, 2, 3]\n",
},
"datetime slices": {
input: struct{ DatetimeSlice []time.Time }{
[]time.Time{date, date},
},
wantOutput: fmt.Sprintf("DatetimeSlice = [%s, %s]\n",
dateStr, dateStr),
},
"nested arrays and slices": {
input: struct {
SliceOfArrays [][2]int
ArrayOfSlices [2][]int
SliceOfArraysOfSlices [][2][]int
ArrayOfSlicesOfArrays [2][][2]int
SliceOfMixedArrays [][2]interface{}
ArrayOfMixedSlices [2][]interface{}
}{
[][2]int{{1, 2}, {3, 4}},
[2][]int{{1, 2}, {3, 4}},
[][2][]int{
{
{1, 2}, {3, 4},
},
{
{5, 6}, {7, 8},
},
},
[2][][2]int{
{
{1, 2}, {3, 4},
},
{
{5, 6}, {7, 8},
},
},
[][2]interface{}{
{1, 2}, {"a", "b"},
},
[2][]interface{}{
{1, 2}, {"a", "b"},
},
},
wantOutput: `SliceOfArrays = [[1, 2], [3, 4]]
ArrayOfSlices = [[1, 2], [3, 4]]
SliceOfArraysOfSlices = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
ArrayOfSlicesOfArrays = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
SliceOfMixedArrays = [[1, 2], ["a", "b"]]
ArrayOfMixedSlices = [[1, 2], ["a", "b"]]
`,
},
"empty slice": {
input: struct{ Empty []interface{} }{[]interface{}{}},
wantOutput: "Empty = []\n",
},
"(error) slice with element type mismatch (string and integer)": {
input: struct{ Mixed []interface{} }{[]interface{}{1, "a"}},
wantError: errArrayMixedElementTypes,
},
"(error) slice with element type mismatch (integer and float)": {
input: struct{ Mixed []interface{} }{[]interface{}{1, 2.5}},
wantError: errArrayMixedElementTypes,
},
"slice with elems of differing Go types, same TOML types": {
input: struct {
MixedInts []interface{}
MixedFloats []interface{}
}{
[]interface{}{
int(1), int8(2), int16(3), int32(4), int64(5),
uint(1), uint8(2), uint16(3), uint32(4), uint64(5),
},
[]interface{}{float32(1.5), float64(2.5)},
},
wantOutput: "MixedInts = [1, 2, 3, 4, 5, 1, 2, 3, 4, 5]\n" +
"MixedFloats = [1.5, 2.5]\n",
},
"(error) slice w/ element type mismatch (one is nested array)": {
input: struct{ Mixed []interface{} }{
[]interface{}{1, []interface{}{2}},
},
wantError: errArrayMixedElementTypes,
},
"(error) slice with 1 nil element": {
input: struct{ NilElement1 []interface{} }{[]interface{}{nil}},
wantError: errArrayNilElement,
},
"(error) slice with 1 nil element (and other non-nil elements)": {
input: struct{ NilElement []interface{} }{
[]interface{}{1, nil},
},
wantError: errArrayNilElement,
},
"simple map": {
input: map[string]int{"a": 1, "b": 2},
wantOutput: "a = 1\nb = 2\n",
},
"map with interface{} value type": {
input: map[string]interface{}{"a": 1, "b": "c"},
wantOutput: "a = 1\nb = \"c\"\n",
},
"map with interface{} value type, some of which are structs": {
input: map[string]interface{}{
"a": struct{ Int int }{2},
"b": 1,
},
wantOutput: "b = 1\n\n[a]\n Int = 2\n",
},
"nested map": {
input: map[string]map[string]int{
"a": {"b": 1},
"c": {"d": 2},
},
wantOutput: "[a]\n b = 1\n\n[c]\n d = 2\n",
},
"nested struct": {
input: struct{ Struct struct{ Int int } }{
struct{ Int int }{1},
},
wantOutput: "[Struct]\n Int = 1\n",
},
"nested struct and non-struct field": {
input: struct {
Struct struct{ Int int }
Bool bool
}{struct{ Int int }{1}, true},
wantOutput: "Bool = true\n\n[Struct]\n Int = 1\n",
},
"2 nested structs": {
input: struct{ Struct1, Struct2 struct{ Int int } }{
struct{ Int int }{1}, struct{ Int int }{2},
},
wantOutput: "[Struct1]\n Int = 1\n\n[Struct2]\n Int = 2\n",
},
"deeply nested structs": {
input: struct {
Struct1, Struct2 struct{ Struct3 *struct{ Int int } }
}{
struct{ Struct3 *struct{ Int int } }{&struct{ Int int }{1}},
struct{ Struct3 *struct{ Int int } }{nil},
},
wantOutput: "[Struct1]\n [Struct1.Struct3]\n Int = 1" +
"\n\n[Struct2]\n",
},
"nested struct with nil struct elem": {
input: struct {
Struct struct{ Inner *struct{ Int int } }
}{
struct{ Inner *struct{ Int int } }{nil},
},
wantOutput: "[Struct]\n",
},
"nested struct with no fields": {
input: struct {
Struct struct{ Inner struct{} }
}{
struct{ Inner struct{} }{struct{}{}},
},
wantOutput: "[Struct]\n [Struct.Inner]\n",
},
"struct with tags": {
input: struct {
Struct struct {
Int int `toml:"_int"`
} `toml:"_struct"`
Bool bool `toml:"_bool"`
}{
struct {
Int int `toml:"_int"`
}{1}, true,
},
wantOutput: "_bool = true\n\n[_struct]\n _int = 1\n",
},
"embedded struct": {
input: struct{ Embedded }{Embedded{1}},
wantOutput: "_int = 1\n",
},
"embedded *struct": {
input: struct{ *Embedded }{&Embedded{1}},
wantOutput: "_int = 1\n",
},
"nested embedded struct": {
input: struct {
Struct struct{ Embedded } `toml:"_struct"`
}{struct{ Embedded }{Embedded{1}}},
wantOutput: "[_struct]\n _int = 1\n",
},
"nested embedded *struct": {
input: struct {
Struct struct{ *Embedded } `toml:"_struct"`
}{struct{ *Embedded }{&Embedded{1}}},
wantOutput: "[_struct]\n _int = 1\n",
},
"embedded non-struct": {
input: struct{ NonStruct }{5},
wantOutput: "NonStruct = 5\n",
},
"array of tables": {
input: struct {
Structs []*struct{ Int int } `toml:"struct"`
}{
[]*struct{ Int int }{{1}, {3}},
},
wantOutput: "[[struct]]\n Int = 1\n\n[[struct]]\n Int = 3\n",
},
"array of tables order": {
input: map[string]interface{}{
"map": map[string]interface{}{
"zero": 5,
"arr": []map[string]int{
{
"friend": 5,
},
},
},
},
wantOutput: "[map]\n zero = 5\n\n [[map.arr]]\n friend = 5\n",
},
"(error) top-level slice": {
input: []struct{ Int int }{{1}, {2}, {3}},
wantError: errNoKey,
},
"(error) slice of slice": {
input: struct {
Slices [][]struct{ Int int }
}{
[][]struct{ Int int }{{{1}}, {{2}}, {{3}}},
},
wantError: errArrayNoTable,
},
"(error) map no string key": {
input: map[int]string{1: ""},
wantError: errNonString,
},
"(error) empty key name": {
input: map[string]int{"": 1},
wantError: errAnything,
},
"(error) empty map name": {
input: map[string]interface{}{
"": map[string]int{"v": 1},
},
wantError: errAnything,
},
}
for label, test := range tests {
encodeExpected(t, label, test.input, test.wantOutput, test.wantError)
}
}
func TestEncodeNestedTableArrays(t *testing.T) {
type song struct {
Name string `toml:"name"`
}
type album struct {
Name string `toml:"name"`
Songs []song `toml:"songs"`
}
type springsteen struct {
Albums []album `toml:"albums"`
}
value := springsteen{
[]album{
{"Born to Run",
[]song{{"Jungleland"}, {"Meeting Across the River"}}},
{"Born in the USA",
[]song{{"Glory Days"}, {"Dancing in the Dark"}}},
},
}
expected := `[[albums]]
name = "Born to Run"
[[albums.songs]]
name = "Jungleland"
[[albums.songs]]
name = "Meeting Across the River"
[[albums]]
name = "Born in the USA"
[[albums.songs]]
name = "Glory Days"
[[albums.songs]]
name = "Dancing in the Dark"
`
encodeExpected(t, "nested table arrays", value, expected, nil)
}
func TestEncodeArrayHashWithNormalHashOrder(t *testing.T) {
type Alpha struct {
V int
}
type Beta struct {
V int
}
type Conf struct {
V int
A Alpha
B []Beta
}
val := Conf{
V: 1,
A: Alpha{2},
B: []Beta{{3}},
}
expected := "V = 1\n\n[A]\n V = 2\n\n[[B]]\n V = 3\n"
encodeExpected(t, "array hash with normal hash order", val, expected, nil)
}
func TestEncodeWithOmitEmpty(t *testing.T) {
type simple struct {
Bool bool `toml:"bool,omitempty"`
String string `toml:"string,omitempty"`
Array [0]byte `toml:"array,omitempty"`
Slice []int `toml:"slice,omitempty"`
Map map[string]string `toml:"map,omitempty"`
}
var v simple
encodeExpected(t, "fields with omitempty are omitted when empty", v, "", nil)
v = simple{
Bool: true,
String: " ",
Slice: []int{2, 3, 4},
Map: map[string]string{"foo": "bar"},
}
expected := `bool = true
string = " "
slice = [2, 3, 4]
[map]
foo = "bar"
`
encodeExpected(t, "fields with omitempty are not omitted when non-empty",
v, expected, nil)
}
func TestEncodeWithOmitZero(t *testing.T) {
type simple struct {
Number int `toml:"number,omitzero"`
Real float64 `toml:"real,omitzero"`
Unsigned uint `toml:"unsigned,omitzero"`
}
value := simple{0, 0.0, uint(0)}
expected := ""
encodeExpected(t, "simple with omitzero, all zero", value, expected, nil)
value.Number = 10
value.Real = 20
value.Unsigned = 5
expected = `number = 10
real = 20.0
unsigned = 5
`
encodeExpected(t, "simple with omitzero, non-zero", value, expected, nil)
}
func TestEncodeOmitemptyWithEmptyName(t *testing.T) {
type simple struct {
S []int `toml:",omitempty"`
}
v := simple{[]int{1, 2, 3}}
expected := "S = [1, 2, 3]\n"
encodeExpected(t, "simple with omitempty, no name, non-empty field",
v, expected, nil)
}
func TestEncodeAnonymousStructPointerField(t *testing.T) {
type Sub struct{}
type simple struct {
*Sub
}
value := simple{}
expected := ""
encodeExpected(t, "nil anonymous struct pointer field", value, expected, nil)
value = simple{Sub: &Sub{}}
expected = ""
encodeExpected(t, "non-nil anonymous struct pointer field", value, expected, nil)
}
func TestEncodeIgnoredFields(t *testing.T) {
type simple struct {
Number int `toml:"-"`
}
value := simple{}
expected := ""
encodeExpected(t, "ignored field", value, expected, nil)
}
func encodeExpected(
t *testing.T, label string, val interface{}, wantStr string, wantErr error,
) {
var buf bytes.Buffer
enc := NewEncoder(&buf)
err := enc.Encode(val)
if err != wantErr {
if wantErr != nil {
if wantErr == errAnything && err != nil {
return
}
t.Errorf("%s: want Encode error %v, got %v", label, wantErr, err)
} else {
t.Errorf("%s: Encode failed: %s", label, err)
}
}
if err != nil {
return
}
if got := buf.String(); wantStr != got {
t.Errorf("%s: want\n-----\n%q\n-----\nbut got\n-----\n%q\n-----\n",
label, wantStr, got)
}
}
func ExampleEncoder_Encode() {
date, _ := time.Parse(time.RFC822, "14 Mar 10 18:00 UTC")
var config = map[string]interface{}{
"date": date,
"counts": []int{1, 1, 2, 3, 5, 8},
"hash": map[string]string{
"key1": "val1",
"key2": "val2",
},
}
buf := new(bytes.Buffer)
if err := NewEncoder(buf).Encode(config); err != nil {
log.Fatal(err)
}
fmt.Println(buf.String())
// Output:
// counts = [1, 1, 2, 3, 5, 8]
// date = 2010-03-14T18:00:00Z
//
// [hash]
// key1 = "val1"
// key2 = "val2"
}