File size: 1,231 Bytes
9853396 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | package xerrors
import (
"fmt"
"testing"
"github.com/stretchr/testify/require"
)
type tErr struct {
msg string
}
func (t tErr) Error() string {
return t.msg
}
type sErr struct {
age int
name string
}
func (s sErr) Error() string {
return fmt.Sprintf("age %d, name %s", s.age, s.name)
}
func (s *sErr) As(err any) bool {
switch e := err.(type) {
case *tErr:
e.msg = s.Error()
return true
default:
return false
}
}
func TestAs(t *testing.T) {
type args struct {
rawErr error
}
type caseT struct {
name string
args args
want tErr
want1 bool
}
tests := []caseT{
{
name: "same type",
args: args{
rawErr: tErr{msg: "test"},
},
want: tErr{msg: "test"},
want1: true,
},
{
name: "different type",
args: args{
rawErr: &sErr{
age: 18,
name: "test",
},
},
want: tErr{msg: "age 18, name test"},
want1: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, got1 := As[tErr](tt.args.rawErr)
require.Equalf(t, tt.want, got, "As(%v)", tt.args.rawErr)
require.Equalf(t, tt.want1, got1, "As(%v)", tt.args.rawErr)
})
}
}
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