How to use Smuggle method of td Package

Best Go-testdeep code snippet using td.Smuggle

td_smuggle.go

Source:td_smuggle.go Github

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...16 "unicode/utf8"17 "github.com/maxatome/go-testdeep/internal/ctxerr"18 "github.com/maxatome/go-testdeep/internal/types"19)20// SmuggledGot can be returned by a [Smuggle] function to name the21// transformed / returned value.22type SmuggledGot struct {23 Name string24 Got any25}26const smuggled = "<smuggled>"27var (28 smuggleFnsMu sync.Mutex29 smuggleFns = map[any]reflect.Value{}30 nilError = reflect.New(types.Error).Elem()31)32func (s SmuggledGot) contextAndGot(ctx ctxerr.Context) (ctxerr.Context, reflect.Value) {33 // If the Name starts with a Letter, prefix it by a "."34 var name string35 if s.Name != "" {36 first, _ := utf8.DecodeRuneInString(s.Name)37 if unicode.IsLetter(first) {38 name = "."39 }40 name += s.Name41 } else {42 name = smuggled43 }44 return ctx.AddCustomLevel(name), reflect.ValueOf(s.Got)45}46type tdSmuggle struct {47 tdSmugglerBase48 function reflect.Value49 argType reflect.Type50}51var _ TestDeep = &tdSmuggle{}52type smuggleValue struct {53 Path string54 Value reflect.Value55}56var smuggleValueType = reflect.TypeOf(smuggleValue{})57type smuggleField struct {58 Name string59 Indexed bool60}61func joinFieldsPath(path []smuggleField) string {62 var buf strings.Builder63 for i, part := range path {64 if part.Indexed {65 fmt.Fprintf(&buf, "[%s]", part.Name)66 } else {67 if i > 0 {68 buf.WriteByte('.')69 }70 buf.WriteString(part.Name)71 }72 }73 return buf.String()74}75func splitFieldsPath(origPath string) ([]smuggleField, error) {76 if origPath == "" {77 return nil, fmt.Errorf("FIELD_PATH cannot be empty")78 }79 var res []smuggleField80 for path := origPath; len(path) > 0; {81 r, _ := utf8.DecodeRuneInString(path)82 switch r {83 case '[':84 path = path[1:]85 end := strings.IndexByte(path, ']')86 if end < 0 {87 return nil, fmt.Errorf("cannot find final ']' in FIELD_PATH %q", origPath)88 }89 res = append(res, smuggleField{Name: path[:end], Indexed: true})90 path = path[end+1:]91 case '.':92 if len(res) == 0 {93 return nil, fmt.Errorf("'.' cannot be the first rune in FIELD_PATH %q", origPath)94 }95 path = path[1:]96 if path == "" {97 return nil, fmt.Errorf("final '.' in FIELD_PATH %q is not allowed", origPath)98 }99 r, _ = utf8.DecodeRuneInString(path)100 if r == '.' || r == '[' {101 return nil, fmt.Errorf("unexpected %q after '.' in FIELD_PATH %q", r, origPath)102 }103 fallthrough104 default:105 var field string106 end := strings.IndexAny(path, ".[")107 if end < 0 {108 field, path = path, ""109 } else {110 field, path = path[:end], path[end:]111 }112 for j, r := range field {113 if !unicode.IsLetter(r) && (j == 0 || !unicode.IsNumber(r)) {114 return nil, fmt.Errorf("unexpected %q in field name %q in FIELDS_PATH %q", r, field, origPath)115 }116 }117 res = append(res, smuggleField{Name: field})118 }119 }120 return res, nil121}122func nilFieldErr(path []smuggleField) error {123 return fmt.Errorf("field %q is nil", joinFieldsPath(path))124}125func buildFieldsPathFn(path string) (func(any) (smuggleValue, error), error) {126 parts, err := splitFieldsPath(path)127 if err != nil {128 return nil, err129 }130 return func(got any) (smuggleValue, error) {131 vgot := reflect.ValueOf(got)132 for idxPart, field := range parts {133 // Resolve all interface and pointer dereferences134 for {135 switch vgot.Kind() {136 case reflect.Interface, reflect.Ptr:137 if vgot.IsNil() {138 return smuggleValue{}, nilFieldErr(parts[:idxPart])139 }140 vgot = vgot.Elem()141 continue142 }143 break144 }145 if !field.Indexed {146 if vgot.Kind() == reflect.Struct {147 vgot = vgot.FieldByName(field.Name)148 if !vgot.IsValid() {149 return smuggleValue{}, fmt.Errorf(150 "field %q not found",151 joinFieldsPath(parts[:idxPart+1]))152 }153 continue154 }155 if idxPart == 0 {156 return smuggleValue{},157 fmt.Errorf("it is a %s and should be a struct", vgot.Kind())158 }159 return smuggleValue{}, fmt.Errorf(160 "field %q is a %s and should be a struct",161 joinFieldsPath(parts[:idxPart]), vgot.Kind())162 }163 switch vgot.Kind() {164 case reflect.Map:165 tkey := vgot.Type().Key()166 var vkey reflect.Value167 switch tkey.Kind() {168 case reflect.String:169 vkey = reflect.ValueOf(field.Name)170 case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:171 i, err := strconv.ParseInt(field.Name, 10, 64)172 if err != nil {173 return smuggleValue{}, fmt.Errorf(174 "field %q, %q is not an integer and so cannot match %s map key type",175 joinFieldsPath(parts[:idxPart+1]), field.Name, tkey)176 }177 vkey = reflect.ValueOf(i).Convert(tkey)178 case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:179 i, err := strconv.ParseUint(field.Name, 10, 64)180 if err != nil {181 return smuggleValue{}, fmt.Errorf(182 "field %q, %q is not an unsigned integer and so cannot match %s map key type",183 joinFieldsPath(parts[:idxPart+1]), field.Name, tkey)184 }185 vkey = reflect.ValueOf(i).Convert(tkey)186 case reflect.Float32, reflect.Float64:187 f, err := strconv.ParseFloat(field.Name, 64)188 if err != nil {189 return smuggleValue{}, fmt.Errorf(190 "field %q, %q is not a float and so cannot match %s map key type",191 joinFieldsPath(parts[:idxPart+1]), field.Name, tkey)192 }193 vkey = reflect.ValueOf(f).Convert(tkey)194 case reflect.Complex64, reflect.Complex128:195 c, err := strconv.ParseComplex(field.Name, 128)196 if err != nil {197 return smuggleValue{}, fmt.Errorf(198 "field %q, %q is not a complex number and so cannot match %s map key type",199 joinFieldsPath(parts[:idxPart+1]), field.Name, tkey)200 }201 vkey = reflect.ValueOf(c).Convert(tkey)202 default:203 return smuggleValue{}, fmt.Errorf(204 "field %q, %q cannot match unsupported %s map key type",205 joinFieldsPath(parts[:idxPart+1]), field.Name, tkey)206 }207 vgot = vgot.MapIndex(vkey)208 if !vgot.IsValid() {209 return smuggleValue{}, fmt.Errorf("field %q, %q map key not found",210 joinFieldsPath(parts[:idxPart+1]), field.Name)211 }212 case reflect.Slice, reflect.Array:213 i, err := strconv.ParseInt(field.Name, 10, 64)214 if err != nil {215 return smuggleValue{}, fmt.Errorf(216 "field %q, %q is not a slice/array index",217 joinFieldsPath(parts[:idxPart+1]), field.Name)218 }219 if i < 0 {220 i = int64(vgot.Len()) + i221 }222 if i < 0 || i >= int64(vgot.Len()) {223 return smuggleValue{}, fmt.Errorf(224 "field %q, %d is out of slice/array range (len %d)",225 joinFieldsPath(parts[:idxPart+1]), i, vgot.Len())226 }227 vgot = vgot.Index(int(i))228 default:229 if idxPart == 0 {230 return smuggleValue{},231 fmt.Errorf("it is a %s, but a map, array or slice is expected",232 vgot.Kind())233 }234 return smuggleValue{}, fmt.Errorf(235 "field %q is a %s, but a map, array or slice is expected",236 joinFieldsPath(parts[:idxPart]), vgot.Kind())237 }238 }239 return smuggleValue{240 Path: path,241 Value: vgot,242 }, nil243 }, nil244}245func getFieldsPathFn(fieldPath string) (reflect.Value, error) {246 smuggleFnsMu.Lock()247 defer smuggleFnsMu.Unlock()248 if vfn, ok := smuggleFns[fieldPath]; ok {249 return vfn, nil250 }251 fn, err := buildFieldsPathFn(fieldPath)252 if err != nil {253 return reflect.Value{}, err254 }255 vfn := reflect.ValueOf(fn)256 smuggleFns[fieldPath] = vfn257 return vfn, err258}259func getCaster(outType reflect.Type) reflect.Value {260 smuggleFnsMu.Lock()261 defer smuggleFnsMu.Unlock()262 if vfn, ok := smuggleFns[outType]; ok {263 return vfn264 }265 var fn reflect.Value266 switch outType.Kind() {267 case reflect.String:268 fn = buildCaster(outType, true)269 case reflect.Slice:270 if outType.Elem().Kind() == reflect.Uint8 {271 // Special case for slices of bytes: falls back on io.Reader if not []byte272 fn = buildCaster(outType, false)273 break274 }275 fallthrough276 default:277 // For all other types, take the received param and return278 // it. Smuggle already converted got to the type of param, so the279 // work is done.280 inOut := []reflect.Type{outType}281 fn = reflect.MakeFunc(282 reflect.FuncOf(inOut, inOut, false),283 func(args []reflect.Value) []reflect.Value { return args },284 )285 }286 smuggleFns[outType] = fn287 return fn288}289// buildCaster returns a function:290//291// func(in any) (out outType, err error)292//293// dynamically checks…294// - if useString is false, as outType is a slice of bytes:295// 1. in is a []byte or convertible to []byte296// 2. in implements io.Reader297// - if useString is true, as outType is a string:298// 1. in is a []byte or convertible to string299// 2. in implements io.Reader300func buildCaster(outType reflect.Type, useString bool) reflect.Value {301 zeroRet := reflect.New(outType).Elem()302 return reflect.MakeFunc(303 reflect.FuncOf(304 []reflect.Type{types.Interface},305 []reflect.Type{outType, types.Error},306 false,307 ),308 func(args []reflect.Value) []reflect.Value {309 if args[0].IsNil() {310 return []reflect.Value{311 zeroRet,312 reflect.ValueOf(&ctxerr.Error{313 Message: "incompatible parameter type",314 Got: types.RawString("nil"),315 Expected: types.RawString(outType.String() + " or convertible or io.Reader"),316 }),317 }318 }319 // 1st & only arg is always an interface320 args[0] = args[0].Elem()321 if ok, convertible := types.IsTypeOrConvertible(args[0], outType); ok {322 if convertible {323 return []reflect.Value{args[0].Convert(outType), nilError}324 }325 return []reflect.Value{args[0], nilError}326 }327 // Our caller encures Interface() can be called safely328 switch ta := args[0].Interface().(type) {329 case io.Reader:330 var b bytes.Buffer331 if _, err := b.ReadFrom(ta); err != nil {332 return []reflect.Value{333 zeroRet,334 reflect.ValueOf(&ctxerr.Error{335 Message: "an error occurred while reading from io.Reader",336 Summary: ctxerr.NewSummary(err.Error()),337 }),338 }339 }340 var buf any341 if useString {342 buf = b.String()343 } else {344 buf = b.Bytes()345 }346 return []reflect.Value{347 reflect.ValueOf(buf).Convert(outType),348 nilError,349 }350 default:351 return []reflect.Value{352 zeroRet,353 reflect.ValueOf(&ctxerr.Error{354 Message: "incompatible parameter type",355 Got: types.RawString(args[0].Type().String()),356 Expected: types.RawString(outType.String() + " or convertible or io.Reader"),357 }),358 }359 }360 })361}362// summary(Smuggle): changes data contents or mutates it into another363// type via a custom function or a struct fields-path before stepping364// down in favor of generic comparison process365// input(Smuggle): all366// Smuggle operator allows to change data contents or mutate it into367// another type before stepping down in favor of generic comparison368// process. Of course it is a smuggler operator. So fn is a function369// that must take one parameter whose type must be convertible to the370// type of the compared value.371//372// As convenient shortcuts, fn can be a string specifying a373// fields-path through structs, maps & slices, or any other type, in374// this case a simple cast is done (see below for details).375//376// fn must return at least one value. These value will be compared as is377// to expectedValue, here integer 28:378//379// td.Cmp(t, "0028",380// td.Smuggle(func(value string) int {381// num, _ := strconv.Atoi(value)382// return num383// }, 28),384// )385//386// or using an other [TestDeep] operator, here [Between](28, 30):387//388// td.Cmp(t, "0029",389// td.Smuggle(func(value string) int {390// num, _ := strconv.Atoi(value)391// return num392// }, td.Between(28, 30)),393// )394//395// fn can return a second boolean value, used to tell that a problem396// occurred and so stop the comparison:397//398// td.Cmp(t, "0029",399// td.Smuggle(func(value string) (int, bool) {400// num, err := strconv.Atoi(value)401// return num, err == nil402// }, td.Between(28, 30)),403// )404//405// fn can return a third string value which is used to describe the406// test when a problem occurred (false second boolean value):407//408// td.Cmp(t, "0029",409// td.Smuggle(func(value string) (int, bool, string) {410// num, err := strconv.Atoi(value)411// if err != nil {412// return 0, false, "string must contain a number"413// }414// return num, true, ""415// }, td.Between(28, 30)),416// )417//418// Instead of returning (X, bool) or (X, bool, string), fn can419// return (X, error). When a problem occurs, the returned error is420// non-nil, as in:421//422// td.Cmp(t, "0029",423// td.Smuggle(func(value string) (int, error) {424// num, err := strconv.Atoi(value)425// return num, err426// }, td.Between(28, 30)),427// )428//429// Which can be simplified to:430//431// td.Cmp(t, "0029", td.Smuggle(strconv.Atoi, td.Between(28, 30)))432//433// Imagine you want to compare that the Year of a date is between 2010434// and 2020:435//436// td.Cmp(t, time.Date(2015, time.May, 1, 1, 2, 3, 0, time.UTC),437// td.Smuggle(func(date time.Time) int { return date.Year() },438// td.Between(2010, 2020)),439// )440//441// In this case the data location forwarded to next test will be442// something like "DATA.MyTimeField<smuggled>", but you can act on it443// too by returning a [SmuggledGot] struct (by value or by address):444//445// td.Cmp(t, time.Date(2015, time.May, 1, 1, 2, 3, 0, time.UTC),446// td.Smuggle(func(date time.Time) SmuggledGot {447// return SmuggledGot{448// Name: "Year",449// Got: date.Year(),450// }451// }, td.Between(2010, 2020)),452// )453//454// then the data location forwarded to next test will be something like455// "DATA.MyTimeField.Year". The "." between the current path (here456// "DATA.MyTimeField") and the returned Name "Year" is automatically457// added when Name starts with a Letter.458//459// Note that [SmuggledGot] and [*SmuggledGot] returns are treated460// equally, and they are only used when fn has only one returned value461// or when the second boolean returned value is true.462//463// Of course, all cases can go together:464//465// // Accepts a "YYYY/mm/DD HH:MM:SS" string to produce a time.Time and tests466// // whether this date is contained between 2 hours before now and now.467// td.Cmp(t, "2020-01-25 12:13:14",468// td.Smuggle(func(date string) (*SmuggledGot, bool, string) {469// date, err := time.Parse("2006/01/02 15:04:05", date)470// if err != nil {471// return nil, false, `date must conform to "YYYY/mm/DD HH:MM:SS" format`472// }473// return &SmuggledGot{474// Name: "Date",475// Got: date,476// }, true, ""477// }, td.Between(time.Now().Add(-2*time.Hour), time.Now())),478// )479//480// or:481//482// // Accepts a "YYYY/mm/DD HH:MM:SS" string to produce a time.Time and tests483// // whether this date is contained between 2 hours before now and now.484// td.Cmp(t, "2020-01-25 12:13:14",485// td.Smuggle(func(date string) (*SmuggledGot, error) {486// date, err := time.Parse("2006/01/02 15:04:05", date)487// if err != nil {488// return nil, err489// }490// return &SmuggledGot{491// Name: "Date",492// Got: date,493// }, nil494// }, td.Between(time.Now().Add(-2*time.Hour), time.Now())),495// )496//497// Smuggle can also be used to access a struct field embedded in498// several struct layers.499//500// type A struct{ Num int }501// type B struct{ As map[string]*A }502// type C struct{ B B }503// got := C{B: B{As: map[string]*A{"foo": {Num: 12}}}}504//505// // Tests that got.B.A.Num is 12506// td.Cmp(t, got,507// td.Smuggle(func(c C) int {508// return c.B.As["foo"].Num509// }, 12))510//511// As brought up above, a fields-path can be passed as fn value512// instead of a function pointer. Using this feature, the [Cmp]513// call in the above example can be rewritten as follows:514//515// // Tests that got.B.As["foo"].Num is 12516// td.Cmp(t, got, td.Smuggle("B.As[foo].Num", 12))517//518// Contrary to [JSONPointer] operator, private fields can be519// followed. Arrays, slices and maps work using the index/key inside520// square brackets (e.g. [12] or [foo]). Maps work only for simple key521// types (string or numbers), without "" when using strings522// (e.g. [foo]).523//524// Behind the scenes, a temporary function is automatically created to525// achieve the same goal, but add some checks against nil values and526// auto-dereference interfaces and pointers, even on several levels,527// like in:528//529// type A struct{ N any }530// num := 12531// pnum := &num532// td.Cmp(t, A{N: &pnum}, td.Smuggle("N", 12))533//534// Last but not least, a simple type can be passed as fn to operate535// a cast, handling specifically strings and slices of bytes:536//537// td.Cmp(t, `{"foo":1}`, td.Smuggle(json.RawMessage{}, td.JSON(`{"foo":1}`)))538// // or equally539// td.Cmp(t, `{"foo":1}`, td.Smuggle(json.RawMessage(nil), td.JSON(`{"foo":1}`)))540//541// converts on the fly a string to a [json.RawMessage] so [JSON] operator542// can parse it as JSON. This is mostly a shortcut for:543//544// td.Cmp(t, `{"foo":1}`, td.Smuggle(545// func(r json.RawMessage) json.RawMessage { return r },546// td.JSON(`{"foo":1}`)))547//548// except that for strings and slices of bytes (like here), it accepts549// [io.Reader] interface too:550//551// var body io.Reader552// // …553// td.Cmp(t, body, td.Smuggle(json.RawMessage{}, td.JSON(`{"foo":1}`)))554// // or equally555// td.Cmp(t, body, td.Smuggle(json.RawMessage(nil), td.JSON(`{"foo":1}`)))556//557// This last example allows to easily inject body content into JSON558// operator.559//560// The difference between Smuggle and [Code] operators is that [Code]561// is used to do a final comparison while Smuggle transforms the data562// and then steps down in favor of generic comparison563// process. Moreover, the type accepted as input for the function is564// more lax to facilitate the writing of tests (e.g. the function can565// accept a float64 and the got value be an int). See examples. On the566// other hand, the output type is strict and must match exactly the567// expected value type. The fields-path string fn shortcut and the568// cast feature are not available with [Code] operator.569//570// TypeBehind method returns the [reflect.Type] of only parameter of571// fn. For the case where fn is a fields-path, it is always572// any, as the type can not be known in advance.573//574// See also [Code] and [JSONPointer].575//576// [json.RawMessage]: https://pkg.go.dev/encoding/json#RawMessage577func Smuggle(fn, expectedValue any) TestDeep {578 s := tdSmuggle{579 tdSmugglerBase: newSmugglerBase(expectedValue),580 }581 const usage = "(FUNC|FIELDS_PATH|ANY_TYPE, TESTDEEP_OPERATOR|EXPECTED_VALUE)"582 const fullUsage = "Smuggle" + usage583 var vfn reflect.Value584 switch rfn := fn.(type) {585 case reflect.Type:586 switch rfn.Kind() {587 case reflect.Func, reflect.Invalid, reflect.Interface:588 s.err = ctxerr.OpBad("Smuggle",589 "usage: Smuggle%s, ANY_TYPE reflect.Type cannot be Func nor Interface", usage)590 return &s591 default:592 vfn = getCaster(rfn)593 }594 case string:595 if rfn == "" {596 vfn = getCaster(reflect.TypeOf(fn))597 break598 }599 var err error600 vfn, err = getFieldsPathFn(rfn)601 if err != nil {602 s.err = ctxerr.OpBad("Smuggle", "Smuggle%s: %s", usage, err)603 return &s604 }605 default:606 vfn = reflect.ValueOf(fn)607 switch vfn.Kind() {608 case reflect.Func:609 // nothing to check610 case reflect.Invalid, reflect.Interface:611 s.err = ctxerr.OpBad("Smuggle",612 "usage: Smuggle%s, ANY_TYPE cannot be nil nor Interface", usage)613 return &s614 default:615 vfn = getCaster(vfn.Type())616 }617 }618 fnType := vfn.Type()619 if fnType.IsVariadic() || fnType.NumIn() != 1 {620 s.err = ctxerr.OpBad("Smuggle", fullUsage+": FUNC must take only one non-variadic argument")621 return &s622 }623 switch fnType.NumOut() {624 case 3: // (value, bool, string)625 if fnType.Out(2).Kind() != reflect.String {626 break627 }628 fallthrough629 case 2:630 // (value, *bool*) or (value, *bool*, string)631 if fnType.Out(1).Kind() != reflect.Bool &&632 // (value, *error*)633 (fnType.NumOut() > 2 ||634 fnType.Out(1) != types.Error) {635 break636 }637 fallthrough638 case 1: // (value)639 if vfn.IsNil() {640 s.err = ctxerr.OpBad("Smuggle", "Smuggle(FUNC): FUNC cannot be a nil function")641 return &s642 }643 s.argType = fnType.In(0)644 s.function = vfn645 if !s.isTestDeeper {646 s.expectedValue = reflect.ValueOf(expectedValue)647 }648 return &s649 }650 s.err = ctxerr.OpBad("Smuggle",651 fullUsage+": FUNC must return value or (value, bool) or (value, bool, string) or (value, error)")652 return &s653}654func (s *tdSmuggle) laxConvert(got reflect.Value) (reflect.Value, bool) {655 if got.IsValid() {656 if types.IsConvertible(got, s.argType) {657 return got.Convert(s.argType), true658 }659 } else if s.argType == types.Interface {660 // nil only accepted if any expected661 return reflect.New(types.Interface).Elem(), true662 }663 return got, false664}665func (s *tdSmuggle) Match(ctx ctxerr.Context, got reflect.Value) *ctxerr.Error {666 if s.err != nil {667 return ctx.CollectError(s.err)668 }669 got, ok := s.laxConvert(got)670 if !ok {671 if ctx.BooleanError {672 return ctxerr.BooleanError673 }674 err := ctxerr.Error{675 Message: "incompatible parameter type",676 Expected: types.RawString(s.argType.String()),677 }678 if got.IsValid() {679 err.Got = types.RawString(got.Type().String())680 } else {681 err.Got = types.RawString("nil")682 }683 return ctx.CollectError(&err)684 }685 // Refuse to override unexported fields access in this case. It is a686 // choice, as we think it is better to work on surrounding struct687 // instead.688 if !got.CanInterface() {689 if ctx.BooleanError {690 return ctxerr.BooleanError691 }692 return ctx.CollectError(&ctxerr.Error{693 Message: "cannot smuggle unexported field",694 Summary: ctxerr.NewSummary("work on surrounding struct instead"),695 })696 }697 ret := s.function.Call([]reflect.Value{got})698 if len(ret) == 1 ||699 (ret[1].Kind() == reflect.Bool && ret[1].Bool()) ||700 (ret[1].Kind() == reflect.Interface && ret[1].IsNil()) {701 newGot := ret[0]702 var newCtx ctxerr.Context703 if newGot.IsValid() {704 switch newGot.Type() {705 case smuggledGotType:706 newCtx, newGot = newGot.Interface().(SmuggledGot).contextAndGot(ctx)707 case smuggledGotPtrType:708 if smGot := newGot.Interface().(*SmuggledGot); smGot == nil {709 newCtx, newGot = ctx, reflect.ValueOf(nil)710 } else {711 newCtx, newGot = smGot.contextAndGot(ctx)712 }713 case smuggleValueType:714 smv := newGot.Interface().(smuggleValue)715 newCtx, newGot = ctx.AddCustomLevel("."+smv.Path), smv.Value716 default:717 newCtx = ctx.AddCustomLevel(smuggled)718 }719 }720 return deepValueEqual(newCtx, newGot, s.expectedValue)721 }722 if ctx.BooleanError {723 return ctxerr.BooleanError724 }725 var reason string726 switch len(ret) {727 case 3: // (value, false, string)728 reason = ret[2].String()729 case 2:730 // (value, error)731 if ret[1].Kind() == reflect.Interface {732 // For internal use only733 if cErr, ok := ret[1].Interface().(*ctxerr.Error); ok {734 return ctx.CollectError(cErr)735 }736 reason = ret[1].Interface().(error).Error()737 }738 // (value, false)739 }740 return ctx.CollectError(&ctxerr.Error{741 Message: "ran smuggle code with %% as argument",742 Summary: ctxerr.NewSummaryReason(got, reason),743 })744}745func (s *tdSmuggle) HandleInvalid() bool {746 return true // Knows how to handle untyped nil values (aka invalid values)747}748func (s *tdSmuggle) String() string {749 if s.err != nil {750 return s.stringError()751 }752 return "Smuggle(" + s.function.Type().String() + ")"753}754func (s *tdSmuggle) TypeBehind() reflect.Type {755 if s.err != nil {756 return nil757 }758 return s.argType759}...

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td_smuggle_test.go

Source:td_smuggle_test.go Github

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...31 }32 return33}34func (r *reArmReader) String() string { return "<no string here>" }35func TestSmuggle(t *testing.T) {36 num := 4237 gotStruct := MyStruct{38 MyStructMid: MyStructMid{39 MyStructBase: MyStructBase{40 ValBool: true,41 },42 ValStr: "foobar",43 },44 ValInt: 123,45 Ptr: &num,46 }47 gotTime, err := time.Parse(time.RFC3339, "2018-05-23T12:13:14Z")48 if err != nil {49 t.Fatal(err)50 }51 //52 // One returned value53 checkOK(t,54 gotTime,55 td.Smuggle(56 func(date time.Time) int {57 return date.Year()58 },59 td.Between(2010, 2020)))60 checkOK(t,61 gotStruct,62 td.Smuggle(63 func(s MyStruct) td.SmuggledGot {64 return td.SmuggledGot{65 Name: "ValStr",66 Got: s.ValStr,67 }68 },69 td.Contains("oob")))70 checkOK(t,71 gotStruct,72 td.Smuggle(73 func(s MyStruct) *td.SmuggledGot {74 return &td.SmuggledGot{75 Name: "ValStr",76 Got: s.ValStr,77 }78 },79 td.Contains("oob")))80 //81 // 2 returned values82 checkOK(t,83 gotStruct,84 td.Smuggle(85 func(s MyStruct) (string, bool) {86 if s.ValStr == "" {87 return "", false88 }89 return s.ValStr, true90 },91 td.Contains("oob")))92 checkOK(t,93 gotStruct,94 td.Smuggle(95 func(s MyStruct) (td.SmuggledGot, bool) {96 if s.ValStr == "" {97 return td.SmuggledGot{}, false98 }99 return td.SmuggledGot{100 Name: "ValStr",101 Got: s.ValStr,102 }, true103 },104 td.Contains("oob")))105 checkOK(t,106 gotStruct,107 td.Smuggle(108 func(s MyStruct) (*td.SmuggledGot, bool) {109 if s.ValStr == "" {110 return nil, false111 }112 return &td.SmuggledGot{113 Name: "ValStr",114 Got: s.ValStr,115 }, true116 },117 td.Contains("oob")))118 //119 // 3 returned values120 checkOK(t,121 gotStruct,122 td.Smuggle(123 func(s MyStruct) (string, bool, string) {124 if s.ValStr == "" {125 return "", false, "ValStr must not be empty"126 }127 return s.ValStr, true, ""128 },129 td.Contains("oob")))130 checkOK(t,131 gotStruct,132 td.Smuggle(133 func(s MyStruct) (td.SmuggledGot, bool, string) {134 if s.ValStr == "" {135 return td.SmuggledGot{}, false, "ValStr must not be empty"136 }137 return td.SmuggledGot{138 Name: "ValStr",139 Got: s.ValStr,140 }, true, ""141 },142 td.Contains("oob")))143 checkOK(t,144 gotStruct,145 td.Smuggle(146 func(s MyStruct) (*td.SmuggledGot, bool, string) {147 if s.ValStr == "" {148 return nil, false, "ValStr must not be empty"149 }150 return &td.SmuggledGot{151 Name: "ValStr",152 Got: s.ValStr,153 }, true, ""154 },155 td.Contains("oob")))156 //157 // Convertible types158 checkOK(t, 123,159 td.Smuggle(func(n float64) int { return int(n) }, 123))160 type xInt int161 checkOK(t, xInt(123),162 td.Smuggle(func(n int) int64 { return int64(n) }, int64(123)))163 checkOK(t, xInt(123),164 td.Smuggle(func(n uint32) int64 { return int64(n) }, int64(123)))165 checkOK(t, int32(123),166 td.Smuggle(func(n int64) int { return int(n) }, 123))167 checkOK(t, gotTime,168 td.Smuggle(func(t fmt.Stringer) string { return t.String() },169 "2018-05-23 12:13:14 +0000 UTC"))170 checkOK(t, []byte("{}"),171 td.Smuggle(172 func(x json.RawMessage) json.RawMessage { return x },173 td.JSON(`{}`)))174 //175 // bytes slice caster variations176 checkOK(t, []byte(`{"foo":1}`),177 td.Smuggle(json.RawMessage{}, td.JSON(`{"foo":1}`)))178 checkOK(t, []byte(`{"foo":1}`),179 td.Smuggle(json.RawMessage(nil), td.JSON(`{"foo":1}`)))180 checkOK(t, []byte(`{"foo":1}`),181 td.Smuggle(reflect.TypeOf(json.RawMessage(nil)), td.JSON(`{"foo":1}`)))182 checkOK(t, `{"foo":1}`,183 td.Smuggle(json.RawMessage{}, td.JSON(`{"foo":1}`)))184 checkOK(t, newReArmReader([]byte(`{"foo":1}`)), // io.Reader first185 td.Smuggle(json.RawMessage{}, td.JSON(`{"foo":1}`)))186 checkError(t, nil,187 td.Smuggle(json.RawMessage{}, td.JSON(`{}`)),188 expectedError{189 Message: mustBe("incompatible parameter type"),190 Path: mustBe("DATA"),191 Got: mustBe("nil"),192 Expected: mustBe("json.RawMessage or convertible or io.Reader"),193 })194 checkError(t, MyStruct{},195 td.Smuggle(json.RawMessage{}, td.JSON(`{}`)),196 expectedError{197 Message: mustBe("incompatible parameter type"),198 Path: mustBe("DATA"),199 Got: mustBe("td_test.MyStruct"),200 Expected: mustBe("json.RawMessage or convertible or io.Reader"),201 })202 checkError(t, errReader{}, // erroneous io.Reader203 td.Smuggle(json.RawMessage{}, td.JSON(`{}`)),204 expectedError{205 Message: mustBe("an error occurred while reading from io.Reader"),206 Path: mustBe("DATA"),207 Summary: mustBe("an error occurred"),208 })209 //210 // strings caster variations211 type myString string212 checkOK(t, `pipo bingo`,213 td.Smuggle("", td.HasSuffix("bingo")))214 checkOK(t, []byte(`pipo bingo`),215 td.Smuggle(myString(""), td.HasSuffix("bingo")))216 checkOK(t, []byte(`pipo bingo`),217 td.Smuggle(reflect.TypeOf(myString("")), td.HasSuffix("bingo")))218 checkOK(t, newReArmReader([]byte(`pipo bingo`)), // io.Reader first219 td.Smuggle(myString(""), td.HasSuffix("bingo")))220 checkError(t, nil,221 td.Smuggle("", "bingo"),222 expectedError{223 Message: mustBe("incompatible parameter type"),224 Path: mustBe("DATA"),225 Got: mustBe("nil"),226 Expected: mustBe("string or convertible or io.Reader"),227 })228 checkError(t, MyStruct{},229 td.Smuggle(myString(""), "bingo"),230 expectedError{231 Message: mustBe("incompatible parameter type"),232 Path: mustBe("DATA"),233 Got: mustBe("td_test.MyStruct"),234 Expected: mustBe("td_test.myString or convertible or io.Reader"),235 })236 checkError(t, errReader{}, // erroneous io.Reader237 td.Smuggle("", "bingo"),238 expectedError{239 Message: mustBe("an error occurred while reading from io.Reader"),240 Path: mustBe("DATA"),241 Summary: mustBe("an error occurred"),242 })243 //244 // Any other caster variations245 checkOK(t, `pipo bingo`,246 td.Smuggle([]rune{}, td.Contains([]rune(`bing`))))247 checkOK(t, `pipo bingo`,248 td.Smuggle(([]rune)(nil), td.Contains([]rune(`bing`))))249 checkOK(t, `pipo bingo`,250 td.Smuggle(reflect.TypeOf([]rune{}), td.Contains([]rune(`bing`))))251 checkOK(t, 123.456, td.Smuggle(int64(0), int64(123)))252 checkOK(t, 123.456, td.Smuggle(reflect.TypeOf(int64(0)), int64(123)))253 //254 // Errors255 checkError(t, "123",256 td.Smuggle(func(n float64) int { return int(n) }, 123),257 expectedError{258 Message: mustBe("incompatible parameter type"),259 Path: mustBe("DATA"),260 Got: mustBe("string"),261 Expected: mustBe("float64"),262 })263 checkError(t, nil,264 td.Smuggle(func(n int64) int { return int(n) }, 123),265 expectedError{266 Message: mustBe("incompatible parameter type"),267 Path: mustBe("DATA"),268 Got: mustBe("nil"),269 Expected: mustBe("int64"),270 })271 checkError(t, 12,272 td.Smuggle(func(n int) (int, bool) { return n, false }, 12),273 expectedError{274 Message: mustBe("ran smuggle code with %% as argument"),275 Path: mustBe("DATA"),276 Summary: mustBe(" value: 12\nit failed but didn't say why"),277 })278 type MyBool bool279 type MyString string280 checkError(t, 12,281 td.Smuggle(func(n int) (int, MyBool, MyString) {282 return n, false, "very custom error"283 }, 12),284 expectedError{285 Message: mustBe("ran smuggle code with %% as argument"),286 Path: mustBe("DATA"),287 Summary: mustBe(" value: 12\nit failed coz: very custom error"),288 })289 checkError(t, 12,290 td.Smuggle(func(n int) (int, error) {291 return n, errors.New("very custom error")292 }, 12),293 expectedError{294 Message: mustBe("ran smuggle code with %% as argument"),295 Path: mustBe("DATA"),296 Summary: mustBe(" value: 12\nit failed coz: very custom error"),297 })298 checkError(t, 12,299 td.Smuggle(func(n int) *td.SmuggledGot { return nil }, int64(13)),300 expectedError{301 Message: mustBe("values differ"),302 Path: mustBe("DATA"),303 Got: mustBe("nil"),304 Expected: mustBe("(int64) 13"),305 })306 // Internal use307 checkError(t, 12,308 td.Smuggle(func(n int) (int, error) {309 return n, &ctxerr.Error{310 Message: "my message",311 Summary: ctxerr.NewSummary("my summary"),312 }313 }, 13),314 expectedError{315 Message: mustBe("my message"),316 Path: mustBe("DATA"),317 Summary: mustBe("my summary"),318 })319 //320 // Errors behind Smuggle()321 checkError(t, 12,322 td.Smuggle(func(n int) int64 { return int64(n) }, int64(13)),323 expectedError{324 Message: mustBe("values differ"),325 Path: mustBe("DATA<smuggled>"),326 Got: mustBe("(int64) 12"),327 Expected: mustBe("(int64) 13"),328 })329 checkError(t, gotStruct,330 td.Smuggle("MyStructMid.MyStructBase.ValBool", false),331 expectedError{332 Message: mustBe("values differ"),333 Path: mustBe("DATA.MyStructMid.MyStructBase.ValBool"),334 Got: mustBe("true"),335 Expected: mustBe("false"),336 })337 checkError(t, 12,338 td.Smuggle(func(n int) td.SmuggledGot {339 return td.SmuggledGot{340 // With Name = ""341 Got: int64(n),342 }343 }, int64(13)),344 expectedError{345 Message: mustBe("values differ"),346 Path: mustBe("DATA<smuggled>"),347 Got: mustBe("(int64) 12"),348 Expected: mustBe("(int64) 13"),349 })350 checkError(t, 12,351 td.Smuggle(func(n int) *td.SmuggledGot {352 return &td.SmuggledGot{353 Name: "<int64>",354 Got: int64(n),355 }356 }, int64(13)),357 expectedError{358 Message: mustBe("values differ"),359 Path: mustBe("DATA<int64>"), // no dot added between DATA and <int64>360 Got: mustBe("(int64) 12"),361 Expected: mustBe("(int64) 13"),362 })363 checkError(t, 12,364 td.Smuggle(func(n int) *td.SmuggledGot {365 return &td.SmuggledGot{366 Name: "Int64",367 Got: int64(n),368 }369 }, int64(13)),370 expectedError{371 Message: mustBe("values differ"),372 Path: mustBe("DATA.Int64"), // dot added between DATA and Int64373 Got: mustBe("(int64) 12"),374 Expected: mustBe("(int64) 13"),375 })376 //377 // Bad usage378 const usage = "Smuggle(FUNC|FIELDS_PATH|ANY_TYPE, TESTDEEP_OPERATOR|EXPECTED_VALUE): "379 checkError(t, "never tested",380 td.Smuggle(nil, 12),381 expectedError{382 Message: mustBe("bad usage of Smuggle operator"),383 Path: mustBe("DATA"),384 Summary: mustBe("usage: " + usage[:len(usage)-2] + ", ANY_TYPE cannot be nil nor Interface"),385 })386 checkError(t, nil,387 td.Smuggle(reflect.TypeOf((*fmt.Stringer)(nil)).Elem(), 1234),388 expectedError{389 Message: mustBe("bad usage of Smuggle operator"),390 Path: mustBe("DATA"),391 Summary: mustBe("usage: " + usage[:len(usage)-2] + ", ANY_TYPE reflect.Type cannot be Func nor Interface"),392 })393 checkError(t, nil,394 td.Smuggle(reflect.TypeOf(func() {}), 1234),395 expectedError{396 Message: mustBe("bad usage of Smuggle operator"),397 Path: mustBe("DATA"),398 Summary: mustBe("usage: " + usage[:len(usage)-2] + ", ANY_TYPE reflect.Type cannot be Func nor Interface"),399 })400 checkError(t, "never tested",401 td.Smuggle((func(string) int)(nil), 12),402 expectedError{403 Message: mustBe("bad usage of Smuggle operator"),404 Path: mustBe("DATA"),405 Summary: mustBe("Smuggle(FUNC): FUNC cannot be a nil function"),406 })407 checkError(t, "never tested",408 td.Smuggle("bad[path", 12),409 expectedError{410 Message: mustBe("bad usage of Smuggle operator"),411 Path: mustBe("DATA"),412 Summary: mustBe(usage + `cannot find final ']' in FIELD_PATH "bad[path"`),413 })414 // Bad number of args415 checkError(t, "never tested",416 td.Smuggle(func() int { return 0 }, 12),417 expectedError{418 Message: mustBe("bad usage of Smuggle operator"),419 Path: mustBe("DATA"),420 Summary: mustBe(usage + "FUNC must take only one non-variadic argument"),421 })422 checkError(t, "never tested",423 td.Smuggle(func(x ...int) int { return 0 }, 12),424 expectedError{425 Message: mustBe("bad usage of Smuggle operator"),426 Path: mustBe("DATA"),427 Summary: mustBe(usage + "FUNC must take only one non-variadic argument"),428 })429 checkError(t, "never tested",430 td.Smuggle(func(a int, b string) int { return 0 }, 12),431 expectedError{432 Message: mustBe("bad usage of Smuggle operator"),433 Path: mustBe("DATA"),434 Summary: mustBe(usage + "FUNC must take only one non-variadic argument"),435 })436 // Bad number of returned values437 const errMesg = usage + "FUNC must return value or (value, bool) or (value, bool, string) or (value, error)"438 checkError(t, "never tested",439 td.Smuggle(func(a int) {}, 12),440 expectedError{441 Message: mustBe("bad usage of Smuggle operator"),442 Path: mustBe("DATA"),443 Summary: mustBe(errMesg),444 })445 checkError(t, "never tested",446 td.Smuggle(447 func(a int) (int, bool, string, int) { return 0, false, "", 23 },448 12),449 expectedError{450 Message: mustBe("bad usage of Smuggle operator"),451 Path: mustBe("DATA"),452 Summary: mustBe(errMesg),453 })454 // Bad returned types455 checkError(t, "never tested",456 td.Smuggle(func(a int) (int, int) { return 0, 0 }, 12),457 expectedError{458 Message: mustBe("bad usage of Smuggle operator"),459 Path: mustBe("DATA"),460 Summary: mustBe(errMesg),461 })462 checkError(t, "never tested",463 td.Smuggle(func(a int) (int, bool, int) { return 0, false, 23 }, 12),464 expectedError{465 Message: mustBe("bad usage of Smuggle operator"),466 Path: mustBe("DATA"),467 Summary: mustBe(errMesg),468 })469 checkError(t, "never tested",470 td.Smuggle(func(a int) (int, error, string) { return 0, nil, "" }, 12), //nolint: staticcheck471 expectedError{472 Message: mustBe("bad usage of Smuggle operator"),473 Path: mustBe("DATA"),474 Summary: mustBe(errMesg),475 })476 //477 // String478 test.EqualStr(t,479 td.Smuggle(func(n int) int { return 0 }, 12).String(),480 "Smuggle(func(int) int)")481 test.EqualStr(t,482 td.Smuggle(func(n int) (int, bool) { return 23, false }, 12).String(),483 "Smuggle(func(int) (int, bool))")484 test.EqualStr(t,485 td.Smuggle(func(n int) (int, error) { return 23, nil }, 12).String(),486 "Smuggle(func(int) (int, error))")487 test.EqualStr(t,488 td.Smuggle(func(n int) (int, MyBool, MyString) { return 23, false, "" }, 12).489 String(),490 "Smuggle(func(int) (int, td_test.MyBool, td_test.MyString))")491 // Erroneous op492 test.EqualStr(t,493 td.Smuggle((func(int) int)(nil), 12).String(),494 "Smuggle(<ERROR>)")495}496func TestSmuggleFieldsPath(t *testing.T) {497 num := 42498 gotStruct := MyStruct{499 MyStructMid: MyStructMid{500 MyStructBase: MyStructBase{501 ValBool: true,502 },503 ValStr: "foobar",504 },505 ValInt: 123,506 Ptr: &num,507 }508 type A struct {509 Num int510 Str string511 }512 type C struct {513 A A514 PA1 *A515 PA2 *A516 Iface1 any517 Iface2 any518 Iface3 any519 Iface4 any520 }521 type B struct {522 A A523 PA *A524 PppA ***A525 Iface any526 Iface2 any527 Iface3 any528 C *C529 }530 pa := &A{Num: 3, Str: "three"}531 ppa := &pa532 b := B{533 A: A{Num: 1, Str: "one"},534 PA: &A{Num: 2, Str: "two"},535 PppA: &ppa,536 Iface: A{Num: 4, Str: "four"},537 Iface2: &ppa,538 Iface3: nil,539 C: &C{540 A: A{Num: 5, Str: "five"},541 PA1: &A{Num: 6, Str: "six"},542 PA2: nil, // explicit to be clear543 Iface1: A{Num: 7, Str: "seven"},544 Iface2: &A{Num: 8, Str: "eight"},545 Iface3: nil, // explicit to be clear546 Iface4: (*A)(nil),547 },548 }549 //550 // OK551 checkOK(t, gotStruct, td.Smuggle("ValInt", 123))552 checkOK(t, gotStruct,553 td.Smuggle("MyStructMid.ValStr", td.Contains("oob")))554 checkOK(t, gotStruct,555 td.Smuggle("MyStructMid.MyStructBase.ValBool", true))556 checkOK(t, gotStruct, td.Smuggle("ValBool", true)) // thanks to composition557 // OK across pointers558 checkOK(t, b, td.Smuggle("PA.Num", 2))559 checkOK(t, b, td.Smuggle("PppA.Num", 3))560 // OK with any561 checkOK(t, b, td.Smuggle("Iface.Num", 4))562 checkOK(t, b, td.Smuggle("Iface2.Num", 3))563 checkOK(t, b, td.Smuggle("C.Iface1.Num", 7))564 checkOK(t, b, td.Smuggle("C.Iface2.Num", 8))565 // Errors566 checkError(t, 12, td.Smuggle("foo.bar", 23),567 expectedError{568 Message: mustBe("ran smuggle code with %% as argument"),569 Path: mustBe("DATA"),570 Summary: mustBe(" value: 12\nit failed coz: it is a int and should be a struct"),571 })572 checkError(t, gotStruct, td.Smuggle("ValInt.bar", 23),573 expectedError{574 Message: mustBe("ran smuggle code with %% as argument"),575 Path: mustBe("DATA"),576 Summary: mustContain("\nit failed coz: field \"ValInt\" is a int and should be a struct"),577 })578 checkError(t, gotStruct, td.Smuggle("MyStructMid.ValStr.foobar", 23),579 expectedError{580 Message: mustBe("ran smuggle code with %% as argument"),581 Path: mustBe("DATA"),582 Summary: mustContain("\nit failed coz: field \"MyStructMid.ValStr\" is a string and should be a struct"),583 })584 checkError(t, gotStruct, td.Smuggle("foo.bar", 23),585 expectedError{586 Message: mustBe("ran smuggle code with %% as argument"),587 Path: mustBe("DATA"),588 Summary: mustContain("\nit failed coz: field \"foo\" not found"),589 })590 checkError(t, b, td.Smuggle("C.PA2.Num", 456),591 expectedError{592 Message: mustBe("ran smuggle code with %% as argument"),593 Path: mustBe("DATA"),594 Summary: mustContain("\nit failed coz: field \"C.PA2\" is nil"),595 })596 checkError(t, b, td.Smuggle("C.Iface3.Num", 456),597 expectedError{598 Message: mustBe("ran smuggle code with %% as argument"),599 Path: mustBe("DATA"),600 Summary: mustContain("\nit failed coz: field \"C.Iface3\" is nil"),601 })602 checkError(t, b, td.Smuggle("C.Iface4.Num", 456),603 expectedError{604 Message: mustBe("ran smuggle code with %% as argument"),605 Path: mustBe("DATA"),606 Summary: mustContain("\nit failed coz: field \"C.Iface4\" is nil"),607 })608 checkError(t, b, td.Smuggle("Iface3.Num", 456),609 expectedError{610 Message: mustBe("ran smuggle code with %% as argument"),611 Path: mustBe("DATA"),612 Summary: mustContain("\nit failed coz: field \"Iface3\" is nil"),613 })614 // Referencing maps and array/slices615 x := B{616 Iface: map[string]any{617 "test": []int{2, 3, 4},618 },619 C: &C{620 Iface1: []any{621 map[int]any{42: []string{"pipo"}, 66: [2]string{"foo", "bar"}},622 map[int8]any{42: []string{"pipo"}},623 map[int16]any{42: []string{"pipo"}},624 map[int32]any{42: []string{"pipo"}},625 map[int64]any{42: []string{"pipo"}},626 map[uint]any{42: []string{"pipo"}},627 map[uint8]any{42: []string{"pipo"}},628 map[uint16]any{42: []string{"pipo"}},629 map[uint32]any{42: []string{"pipo"}},630 map[uint64]any{42: []string{"pipo"}},631 map[uintptr]any{42: []string{"pipo"}},632 map[float32]any{42: []string{"pipo"}},633 map[float64]any{42: []string{"pipo"}},634 },635 },636 }637 checkOK(t, x, td.Smuggle("Iface[test][1]", 3))638 checkOK(t, x, td.Smuggle("C.Iface1[0][66][1]", "bar"))639 for i := 0; i < 12; i++ {640 checkOK(t, x,641 td.Smuggle(fmt.Sprintf("C.Iface1[%d][42][0]", i), "pipo"))642 checkOK(t, x,643 td.Smuggle(fmt.Sprintf("C.Iface1[%d][42][-1]", i-12), "pipo"))644 }645 checkOK(t, x, td.Lax(td.Smuggle("PppA", nil)))646 checkOK(t, x, td.Smuggle("PppA", td.Nil()))647 //648 type D struct {649 Iface any650 }651 got := D{652 Iface: []any{653 map[complex64]any{complex(42, 0): []string{"pipo"}},654 map[complex128]any{complex(42, 0): []string{"pipo"}},655 },656 }657 for i := 0; i < 2; i++ {658 checkOK(t, got, td.Smuggle(fmt.Sprintf("Iface[%d][42][0]", i), "pipo"))659 checkOK(t, got, td.Smuggle(fmt.Sprintf("Iface[%d][42][0]", i-2), "pipo"))660 }661}662func TestSmuggleTypeBehind(t *testing.T) {663 // Type behind is the smuggle function parameter one664 equalTypes(t, td.Smuggle(func(n int) bool { return n != 0 }, true), 23)665 type MyTime time.Time666 equalTypes(t,667 td.Smuggle(668 func(t MyTime) time.Time { return time.Time(t) },669 time.Now()),670 MyTime{})671 equalTypes(t,672 td.Smuggle(func(from any) any { return from }, nil),673 reflect.TypeOf((*any)(nil)).Elem())674 equalTypes(t,675 td.Smuggle("foo.bar", nil),676 reflect.TypeOf((*any)(nil)).Elem())677 // Erroneous op678 equalTypes(t, td.Smuggle((func(int) int)(nil), 12), nil)679}...

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router_behavior_test.go

Source:router_behavior_test.go Github

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...104 },105 want: td.Struct(&http.Response{106 StatusCode: http.StatusOK,107 }, td.StructFields{108 "Body": readerSmuggle(td.Contains("<title>INetSim default HTML page</title>")),109 }),110 wantErr: false,111 },112 {113 name: "Expect 500 due to error in FS",114 args: args{115 fakeFileFS: fstest.MapFS{},116 args: []rules.Param{117 {118 String: rules.StringP("default.html"),119 },120 },121 request: new(http.Request),122 },123 want: td.Struct(&http.Response{124 StatusCode: http.StatusInternalServerError,125 }, td.StructFields{126 "Body": readerSmuggle(td.Contains("open default.html: file does not exist")),127 }),128 wantErr: false,129 },130 {131 name: "Expect error due to missing argument",132 args: args{133 fakeFileFS: nil,134 args: []rules.Param{},135 request: new(http.Request),136 },137 wantErr: true,138 },139 {140 name: "Expect error due to argument type mismatch",141 args: args{142 fakeFileFS: nil,143 args: []rules.Param{144 {145 Int: rules.IntP(42),146 },147 },148 request: new(http.Request),149 },150 wantErr: true,151 },152 }153 for _, tc := range tests {154 tt := tc155 t.Run(tt.name, func(t *testing.T) {156 t.Parallel()157 logger := logging.CreateTestLogger(t)158 fileHandler, err := mock.FileHandler(logger, tt.args.fakeFileFS, tt.args.args...)159 if err != nil {160 if !tt.wantErr {161 t.Errorf("StatusHandler() error = %v, wantErr %v", err, tt.wantErr)162 }163 return164 }165 recorder := httptest.NewRecorder()166 fileHandler.ServeHTTP(recorder, tt.args.request)167 td.Cmp(t, recorder.Result(), tt.want)168 })169 }170}171func TestJSONHandler(t *testing.T) {172 t.Parallel()173 type args struct {174 args []rules.Param175 request *http.Request176 }177 tests := []struct {178 name string179 args args180 want interface{}181 wantErr bool182 }{183 {184 name: "Get status empty JSON",185 args: args{186 args: []rules.Param{187 {188 String: rules.StringP(`{}`),189 },190 },191 request: new(http.Request),192 },193 want: td.Struct(&http.Response{194 StatusCode: http.StatusOK,195 }, td.StructFields{196 "Body": readerSmuggle(td.String(`{}`)),197 }),198 wantErr: false,199 },200 {201 name: "Get non-empty JSON",202 args: args{203 args: []rules.Param{204 {205 String: rules.StringP(`{"Name": "Ted Tester"}`),206 },207 },208 request: new(http.Request),209 },210 want: td.Struct(&http.Response{211 StatusCode: http.StatusOK,212 }, td.StructFields{213 "Body": readerSmuggle(td.String(`{"Name": "Ted Tester"}`)),214 }),215 wantErr: false,216 },217 {218 name: "Get nested JSON",219 args: args{220 args: []rules.Param{221 {222 String: rules.StringP(`{"Name": "Ted Tester", "Address": {"Street": "Some street 1"}}`),223 },224 },225 request: new(http.Request),226 },227 want: td.Struct(&http.Response{228 StatusCode: http.StatusOK,229 }, td.StructFields{230 "Body": readerSmuggle(td.String(`{"Name": "Ted Tester", "Address": {"Street": "Some street 1"}}`)),231 }),232 wantErr: false,233 },234 {235 name: "Get nested empty array JSON",236 args: args{237 args: []rules.Param{238 {239 String: rules.StringP(`{"Name": "Ted Tester", "Colleagues": []}`),240 },241 },242 request: new(http.Request),243 },244 want: td.Struct(&http.Response{245 StatusCode: http.StatusOK,246 }, td.StructFields{247 "Body": readerSmuggle(td.String(`{"Name": "Ted Tester", "Colleagues": []}`)),248 }),249 wantErr: false,250 },251 {252 name: "Get nested array JSON",253 args: args{254 args: []rules.Param{255 {256 String: rules.StringP(`{"Name": "Ted Tester", "Colleagues": [{"Name": "Carl"}]}`),257 },258 },259 request: new(http.Request),260 },261 want: td.Struct(&http.Response{262 StatusCode: http.StatusOK,263 }, td.StructFields{264 "Body": readerSmuggle(td.String(`{"Name": "Ted Tester", "Colleagues": [{"Name": "Carl"}]}`)),265 }),266 wantErr: false,267 },268 {269 name: "Invalid JSON",270 args: args{271 args: []rules.Param{272 {273 String: rules.StringP(`{`),274 },275 },276 },277 wantErr: true,278 },279 }280 for _, tt := range tests {281 tt := tt282 t.Run(tt.name, func(t *testing.T) {283 t.Parallel()284 logger := logging.CreateTestLogger(t)285 got, err := mock.JSONHandler(logger, nil, tt.args.args...)286 if err != nil {287 if !tt.wantErr {288 t.Errorf("JSONHandler() error = %v, wantErr %v", err, tt.wantErr)289 }290 return291 }292 recorder := httptest.NewRecorder()293 got.ServeHTTP(recorder, tt.args.request)294 td.Cmp(t, recorder.Result(), tt.want)295 })296 }297}298func readerSmuggle(expected interface{}) interface{} {299 return td.Smuggle(func(reader io.Reader) (string, error) {300 data, err := io.ReadAll(reader)301 return string(data), err302 }, expected)303}

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1import (2func main() {3 td := &td{}4 td.Smuggle()5}6import (7func main() {8 td := &td{}9 td.Smuggle()10}11import (12func main() {13 td := &td{}14 td.Smuggle()15}16import (17func main() {18 td := &td{}19 td.Smuggle()20}21import (22func main() {23 td := &td{}24 td.Smuggle()25}26import (27func main() {28 td := &td{}29 td.Smuggle()30}31import (32func main() {33 td := &td{}34 td.Smuggle()35}36import (37func main() {38 td := &td{}39 td.Smuggle()40}41import (42func main() {43 td := &td{}44 td.Smuggle()45}46import (47func main() {48 td := &td{}49 td.Smuggle()50}51import (52func main() {53 td := &td{}54 td.Smuggle()55}56import (57func main() {58 td := &td{}59 td.Smuggle()60}61import (

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1import (2func main() {3 td := new(Td)4 td.Smuggle()5}6import (7func main() {8 td := new(Td)9 td.Smuggle()10}11import (12func main() {13 td := new(Td)14 td.Smuggle()15}16import (17func main() {18 td := new(Td)19 td.Smuggle()20}21import (22func main() {23 td := new(Td)24 td.Smuggle()25}26import (27func main() {28 td := new(Td)29 td.Smuggle()30}31import (32func main() {33 td := new(Td)34 td.Smuggle()35}36import (37func main() {38 td := new(Td)39 td.Smuggle()40}41import (42func main() {43 td := new(Td)44 td.Smuggle()45}46import (47func main() {48 td := new(Td)49 td.Smuggle()50}51import (52func main() {53 td := new(Td)54 td.Smuggle()55}56import (57func main() {58 td := new(Td)59 td.Smuggle()60}

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1import (2type td struct {3}4func (t td) Smuggle() string {5}6func main() {7 t := td{s: "Hello", i: 1}8 v := reflect.ValueOf(t)9 fmt.Println(v.MethodByName("Smuggle").Call(nil)[0].String())10}11import (12type td struct {13}14func (t td) Smuggle() string {15}16func main() {17 t := td{s: "Hello", i: 1}18 fmt.Println(v.MethodByName("Smuggle").Call(nil)[0].String())19}20import (21type td struct {22}23func (t td) Smuggle() string {24}25func main() {26 t := td{s: "Hello", i: 1}27 fmt.Println(v.MethodByName("Smuggle").Call(nil)[0].String())28}29import (30type td struct {31}32func (t td) Smuggle() string {33}34func main() {35 t := td{s: "Hello", i: 1}36 v := reflect.ValueOf(t)37 fmt.Println(v.MethodByName("Smuggle").Call(nil)[0].String())38}39import (40type td struct {41}42func (t td) Smuggle() string {43}44func main() {45 t := td{s: "Hello", i: 1

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1import (2func main() {3 fmt.Println(td.Smuggle(2))4}5import (6func main() {7 fmt.Println(td.Smuggle(3))8}9import (10func main() {11 fmt.Println(td.Smuggle(4))12}13import (14func main() {15 fmt.Println(td.Smuggle(5))16}17import (18func main() {19 fmt.Println(td.Smuggle(6))20}21import (22func main() {23 fmt.Println(td.Smuggle(7))24}25import (26func main() {27 fmt.Println(td.Smuggle(8))28}29import (30func main() {31 fmt.Println(td.Smuggle(9))32}33import (34func main() {35 fmt.Println(td.Smuggle(10))36}37import (38func main() {39 fmt.Println(td.Smuggle(11))40}

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1import (2func main() {3 fmt.Println(strings.ToLower(s))4}5import (6func main() {7 fmt.Println(strings.ToLower(s))8}9import (10func main() {11 fmt.Println(strings.ToLower(s))12}13import (14func main() {15 fmt.Println(strings.ToLower(s))16}17import (18func main() {19 fmt.Println(strings.ToLower(s))20}21import (22func main() {23 fmt.Println(strings.ToLower(s))24}25import (26func main() {27 fmt.Println(strings.ToLower(s))28}29import (30func main() {31 fmt.Println(strings.ToLower(s))32}

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1import (2func main() {3 rand.Seed(time.Now().UnixNano())4 fmt.Println("Hello, playground")5 td.Smuggle()6}

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1import (2func main() {3 td := new(Td)4 td.Smuggle()5}6import (7func main() {8 td := new(Td)9 td.Smuggle()10}11import (12func main() {13 td := new(Td)14 td.Smuggle()15}16import (17func main() {18 td := new(Td)19 td.Smuggle()20}21import (22func main() {23 td := new(Td)24 td.Smuggle()25}26import (27func main() {28 td := new(Td)29 td.Smuggle()30}31import (32func main() {33 td := new(Td)34 td.Smuggle()35}36import (37func main() {38 td := new(Td)39 td.Smuggle()40}41import (42func main() {43 td := new(Td)44 td.Smuggle()45}

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1import (2func main() {3 t.Smuggle()4 fmt.Println("Smuggle method of td class is called")5}6import (7func main() {8 t.Smuggle()9 fmt.Println("Smuggle method of td class is called")10}11import (12func main() {13 t.Smuggle()14 fmt.Println("Smuggle method of td class is called")15}16import (17func main() {18 t.Smuggle()19 fmt.Println("Smuggle method of td class is called")20}21import (22func main() {23 t.Smuggle()24 fmt.Println("Smuggle method of td class is called")25}26import (27func main() {28 t.Smuggle()29 fmt.Println("Smuggle method of td class is called")30}31import (32func main() {33 t.Smuggle()34 fmt.Println("Smuggle method of td class is called")35}36import (37func main() {38 t.Smuggle()39 fmt.Println("Smuggle method of td class is called")40}41import (42func main() {43 t.Smuggle()44 fmt.Println("Smuggle method of

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1import "fmt"2import "github.com/td"3func main() {4 td := td.New()5 td.Smuggle("test")6 td.Smuggle(1)7 td.Smuggle(2.5)8 items, err := td.GetItems()9 if err != nil {10 fmt.Println(err)11 }12 for _, item := range items {13 fmt.Println(item)14 }15}16import "fmt"17import "github.com/td"18func main() {19 td := td.New()20 td.Smuggle("test")21 td.Smuggle(1)22 td.Smuggle(2.5)23 items, err := td.GetItems()24 if err != nil {25 fmt.Println(err)26 }27 for _, item := range items {28 fmt.Println(item)29 }30}31import "fmt"32import "github.com/td"33func main() {34 td := td.New()35 td.Smuggle("test")36 td.Smuggle(1)37 td.Smuggle(2.5)38 items, err := td.GetItems()39 if err != nil {40 fmt.Println(err)41 }42 for _, item := range items {43 fmt.Println(item)44 }45}46import "fmt"47import "github.com/td"48func main() {49 td := td.New()

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