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How to use canonStructField method of td Package

Best Go-testdeep code snippet using td.canonStructField

td_struct.go

Source:td_struct.go

...113// see [Struct] & [SStruct] docs for details) and the corresponding114// value the expected field value (which can be a [TestDeep] operator115// as well as a zero value.)116type StructFields map[string]any117// canonStructField canonicalizes name, a key in a StructFields map,118// so it can be compared with other keys during a mergeStructFields().119//   - "name"                 â "name"120//   - ">  name  "            â ">name"121//   - "  22 =~ [A-Z].*At$  " â "22=~[A-Z].*At$"122func canonStructField(name string) string {123	r, _ := utf8.DecodeRuneInString(name)124	if r == utf8.RuneError || unicode.IsLetter(r) {125		return name // shortcut126	}127	// Overwrite a field128	if strings.HasPrefix(name, ">") {129		new := strings.TrimSpace(name[1:])130		if 1+len(new) == len(name) {131			return name // already canonicalized132		}133		return ">" + new134	}135	// Matcher136	if subs := parseMatcher(name); subs != nil {137		if len(subs[0])+len(subs[1])+len(subs[2]) == len(name) {138			return name // already canonicalized139		}140		return subs[0] + subs[1] + subs[2]141	}142	// Will probably raise an error later as it cannot be a field, not143	// an overwritter and not a matcher144	return name145}146// mergeStructFields merges all sfs items into one StructFields and147// returns it.148func mergeStructFields(sfs ...StructFields) StructFields {149	switch len(sfs) {150	case 0:151		return nil152	case 1:153		return sfs[0]154	default:155		// Do a smart merge so ">  pipo" replaces ">pipo  " for example.156		canon2field := map[string]string{}157		ret := make(StructFields, len(sfs[0]))158		for _, sf := range sfs {159			for field, value := range sf {160				canon := canonStructField(field)161				if prevField, ok := canon2field[canon]; ok {162					delete(ret, prevField)163					delete(canon2field, canon)164				} else {165					delete(ret, canon)166				}167				if canon != field {168					canon2field[canon] = field169				}170				ret[field] = value171			}172		}173		return ret174	}...

td_struct_private_test.go

Source:td_struct_private_test.go

...19		{"123=~.*", "123=~.*"},20		{"  123  =~  .*   ", "123=~.*"},21		{"&badField", "&badField"},22	} {23		test.EqualStr(t, canonStructField(tst.got), tst.expected)24	}25}26func TestMergeStructFields(t *testing.T) {27	sfs := mergeStructFields()28	if sfs != nil {29		t.Errorf("not nil")30	}31	x := StructFields{}32	sfs = mergeStructFields(x)33	if reflect.ValueOf(sfs).Pointer() != reflect.ValueOf(x).Pointer() {34		t.Errorf("not x")35	}36	a := StructFields{"pipo": 1}37	b := StructFields{"pipo": 2}...

canonStructField

Using AI Code Generation

1import "fmt"2type td struct {3}4func main() {5    fmt.Println(td{}.canonStructField("A"))6    fmt.Println(td{}.canonStructField("B"))7    fmt.Println(td{}.canonStructField("C"))8}9import "fmt"10type td struct {11}12func main() {13    fmt.Println(td{}.canonStructField("A"))14    fmt.Println(td{}.canonStructField("B"))15    fmt.Println(td{}.canonStructField("C"))16}17import "fmt"18type td struct {19}20func main() {21    fmt.Println(td{}.canonStructField("A"))22    fmt.Println(td{}.canonStructField("B"))23    fmt.Println(td{}.canonStructField("C"))24}25import "fmt"26type td struct {27}28func main() {29    fmt.Println(td{}.canonStructField("A"))30    fmt.Println(td{}.canonStructField("B"))31    fmt.Println(td{}.canonStructField("C"))32}33import "fmt"34type td struct {35}36func main() {37    fmt.Println(td{}.canonStructField("A"))38    fmt.Println(td{}.canonStructField("B"))39    fmt.Println(td{}.canonStructField("C"))40}41import "fmt"42type td struct {43}44func main() {45    fmt.Println(td{}.canonStructField("A"))46    fmt.Println(td{}.canonStructField("B"))47    fmt.Println(td{}.canonStructField("C"))48}49import "fmt"50type td struct {

canonStructField

Using AI Code Generation

1import (2type td struct {3}4func main() {5	t := reflect.TypeOf(td{})6	f, _ := t.FieldByName("FirstName")7	fmt.Println(f.Tag.Get("json"))8	fmt.Println(canonStructField(f))9}10func canonStructField(f reflect.StructField) string {11	tag := f.Tag.Get("json")12	if tag == "" {13	}14}

canonStructField

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println("Hello, playground")4    fmt.Println(td.canonStructField("abc"))5}6import "fmt"7import "github.com/abc/def"8func main() {9    fmt.Println("Hello, playground")10    fmt.Println(td.canonStructField("abc"))11}12import "fmt"13import "github.com/abc/def"14func main() {15    fmt.Println("Hello, playground")16    fmt.Println(def.td.canonStructField("abc"))17}18import "fmt"19import "github.com/abc/def"20func main() {21    fmt.Println("Hello, playground")22    fmt.Println(def.td.canonStructField("abc"))23    fmt.Println(def.td.canonStructField("abc"))24}25import "fmt"26import "github.com/abc/def"27func main() {28    fmt.Println("Hello, playground")29    fmt.Println(def.td.canonStructField("abc"))30    fmt.Println(def.td.canonStructField("abc"))31    fmt.Println(def.td.canonStructField("abc"))32}33import "fmt"34import "github.com/abc/def"35func main() {36    fmt.Println("Hello, playground")37    fmt.Println(def.td.canonStructField("abc"))38    fmt.Println(def.td.canonStructField("abc"))39    fmt.Println(def.td.canonStructField("abc"))40    fmt.Println(def.td.canonStructField("abc"))41}42import "fmt"43import "github.com/abc/def"44func main() {45    fmt.Println("Hello, playground")46    fmt.Println(def.td.canonStructField("abc"))47    fmt.Println(def.td.canonStructField("abc"))48    fmt.Println(def.td.canonStructField("abc"))

canonStructField

Using AI Code Generation

1import (2type T struct {3}4func main() {5	t := T{1, 2}6	fmt.Println("t = ", t)7	fmt.Println("reflect.TypeOf(t) = ", reflect.TypeOf(t))8	fmt.Println("reflect.TypeOf(t).Field(0) = ", reflect.TypeOf(t).Field(0))9	fmt.Println("reflect.TypeOf(t).Field(0).Name = ", reflect.TypeOf(t).Field(0).Name)10	fmt.Println("reflect.TypeOf(t).Field(0).Type = ", reflect.TypeOf(t).Field(0).Type)11	fmt.Println("reflect.TypeOf(t).Field(0).Tag = ", reflect.TypeOf(t).Field(0).Tag)12	fmt.Println("reflect.TypeOf(t).Field(0).Offset = ", reflect.TypeOf(t).Field(0).Offset)13	fmt.Println("reflect.TypeOf(t).Field(0).Anonymous = ", reflect.TypeOf(t).Field(0).Anonymous)14	fmt.Println("reflect.TypeOf(t).Field(0).PkgPath = ", reflect.TypeOf(t).Field(0).PkgPath)15}16t =  {1 2}17reflect.TypeOf(t) =  main.T18reflect.TypeOf(t).Field(0) =  {A int 0 false }19reflect.TypeOf(t).Field(0).Name =  A20reflect.TypeOf(t).Field(0).Type =  int21reflect.TypeOf(t).Field(0).Tag =  22reflect.TypeOf(t).Field(0).Offset =  023reflect.TypeOf(t).Field(0).Anonymous =  false24reflect.TypeOf(t).Field(0).PkgPath =  25import (26type T struct {27}28func main() {29	t := T{1, 2}30	fmt.Println("t = ", t)31	fmt.Println("reflect.TypeOf(t) = ", reflect.TypeOf(t))32	fmt.Println("reflect.TypeOf(t).Field(0) = ", reflect.TypeOf(t).Field(0))33	fmt.Println("reflect.TypeOf(t).Field(0).Name = ", reflect.TypeOf(t).Field(0).Name)34	fmt.Println("reflect.TypeOf(t).Field(0).Type = ", reflect.TypeOf(t).Field(0).Type)

canonStructField

Using AI Code Generation

1import "fmt"2func main() {3}4import "fmt"5func main() {6}7import "fmt"8func main() {9}10import "fmt"11func main() {12}13import "fmt"14func main() {15}16import "fmt"17func main() {18}19import "fmt"20func main() {21}22import "fmt"

canonStructField

Using AI Code Generation

1import (2type td struct {3}4func main() {5	t.typ = reflect.TypeOf("string")6	t.index = []int{1}7	fmt.Println(t.canonStructField())8}9func (t *td) canonStructField() string {10	if t.anonymous {11	}12	if t.pkgPath != "" {13	}14}15import (16type td struct {17}18func main() {

canonStructField

Using AI Code Generation

1import (2type T struct {3}4func main() {5	t := T{23, "skidoo"}6	s := reflect.ValueOf(&t).Elem()7	typeOfT := s.Type()8	for i := 0; i < s.NumField(); i++ {9		f := s.Field(i)

canonStructField

Using AI Code Generation

1func main() {2    td = NewTypeDetails(reflect.TypeOf(struct {3    }{}))4    sf, err = td.CanonStructField("A")5    if err != nil {6        fmt.Println(err)7    }8    fmt.Println(sf.FieldType)9}

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