testhelp: delete unused code (used only in go-kit)

Author: marco-m-pix4d

go.mod

@@ -6,12 +6,12 @@ require (
 	dario.cat/mergo v1.0.0
 	github.com/Pix4D/go-kit v0.2.0
 	github.com/alexflint/go-arg v1.4.3
-	github.com/golang-jwt/jwt/v5 v5.3.0
 	github.com/sasbury/mini v0.0.0-20181226232755-dc74af49394b
 	gotest.tools/v3 v3.5.1
 )
 
 require (
 	github.com/alexflint/go-scalar v1.2.0 // indirect
+	github.com/golang-jwt/jwt/v5 v5.3.0 // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
 )

testhelp/testhelper.go

@@ -10,7 +10,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"net/http"
 	"os"
 	"path"
 	"path/filepath"
@@ -19,7 +18,6 @@ import (
 	"text/template"
 
 	"dario.cat/mergo"
-	"github.com/golang-jwt/jwt/v5"
 	"gotest.tools/v3/assert"
 )
 
@@ -339,18 +337,3 @@ func EncodePrivateKeyToPEM(privateKey *rsa.PrivateKey) []byte {
 
 	return pem.EncodeToMemory(&privBlock)
 }
-
-// DecodeJWT decodes the HTTP request authorization header with the given RSA key
-// and returns the registered claims of the decoded token.
-func DecodeJWT(t *testing.T, r *http.Request, key *rsa.PrivateKey) *jwt.RegisteredClaims {
-	token := strings.Fields(r.Header.Get("Authorization"))[1]
-	tok, err := jwt.ParseWithClaims(token, &jwt.RegisteredClaims{}, func(t *jwt.Token) (any, error) {
-		if t.Header["alg"] != "RS256" {
-			return nil, fmt.Errorf("unexpected signing method: %v, expected: %v", t.Header["alg"], "RS256")
-		}
-		return &key.PublicKey, nil
-	})
-	assert.NilError(t, err)
-
-	return tok.Claims.(*jwt.RegisteredClaims)
-}