11package testutil
22
33import (
4- "fmt"
54"reflect"
65"time"
6+
7+ "golang.org/x/xerrors"
78)
89
910type Random struct {
@@ -35,12 +36,12 @@ func PopulateStruct(s interface{}, r *Random) error {
3536
3637v := reflect .ValueOf (s )
3738if v .Kind ()!= reflect .Ptr || v .IsNil () {
38- return fmt .Errorf ("s must be a non-nil pointer" )
39+ return xerrors .Errorf ("s must be a non-nil pointer" )
3940}
4041
4142v = v .Elem ()
4243if v .Kind ()!= reflect .Struct {
43- return fmt .Errorf ("s must be a pointer to a struct" )
44+ return xerrors .Errorf ("s must be a pointer to a struct" )
4445}
4546
4647t := v .Type ()
@@ -55,7 +56,7 @@ func PopulateStruct(s interface{}, r *Random) error {
5556
5657nv ,err := populateValue (fieldValue ,r )
5758if err != nil {
58- return fmt .Errorf ("%s : %w" ,fieldName ,err )
59+ return xerrors .Errorf ("%s : %w" ,fieldName ,err )
5960}
6061v .Field (i ).Set (nv )
6162}
@@ -96,7 +97,7 @@ func populateValue(v reflect.Value, r *Random) (reflect.Value, error) {
9697for i := 0 ;i < v .Len ();i ++ {
9798nv ,err := populateValue (v .Index (i ),r )
9899if err != nil {
99- return v ,fmt .Errorf ("array index %d : %w" ,i ,err )
100+ return v ,xerrors .Errorf ("array index %d : %w" ,i ,err )
100101}
101102v .Index (i ).Set (nv )
102103}
@@ -108,11 +109,11 @@ func populateValue(v reflect.Value, r *Random) (reflect.Value, error) {
108109kv := reflect .New (v .Type ().Elem ())
109110k ,err = populateValue (k ,r )
110111if err != nil {
111- return v ,fmt .Errorf ("map key : %w" ,err )
112+ return v ,xerrors .Errorf ("map key : %w" ,err )
112113}
113114kv ,err = populateValue (kv ,r )
114115if err != nil {
115- return v ,fmt .Errorf ("map value : %w" ,err )
116+ return v ,xerrors .Errorf ("map value : %w" ,err )
116117}
117118
118119m .SetMapIndex (k ,kv )
@@ -123,7 +124,7 @@ func populateValue(v reflect.Value, r *Random) (reflect.Value, error) {
123124s := reflect .MakeSlice (v .Type (),2 ,2 )
124125sv ,err := populateValue (reflect .New (v .Type ().Elem ()),r )
125126if err != nil {
126- return v ,fmt .Errorf ("slice value : %w" ,err )
127+ return v ,xerrors .Errorf ("slice value : %w" ,err )
127128}
128129
129130s .Index (0 ).Set (sv )
@@ -133,9 +134,9 @@ func populateValue(v reflect.Value, r *Random) (reflect.Value, error) {
133134return s ,nil
134135case reflect .Uintptr ,reflect .UnsafePointer ,reflect .Chan ,reflect .Func ,reflect .Interface :
135136// Unsupported
136- return v ,fmt .Errorf ("%s is not supported" ,v .Kind ())
137+ return v ,xerrors .Errorf ("%s is not supported" ,v .Kind ())
137138default :
138- return v ,fmt .Errorf ("unsupported kind %s" ,v .Kind ())
139+ return v ,xerrors .Errorf ("unsupported kind %s" ,v .Kind ())
139140}
140141return v ,nil
141142}