Improve middleware test coverage

authority/admin/api/acme.go

@@ -1,17 +1,13 @@
 package api
 
 import (
-	"context"
 	"fmt"
 	"net/http"
 
-	"github.com/go-chi/chi"
-
 	"go.step.sm/linkedca"
 
 	"github.com/smallstep/certificates/api/render"
 	"github.com/smallstep/certificates/authority/admin"
-	"github.com/smallstep/certificates/authority/provisioner"
 )
 
 // CreateExternalAccountKeyRequest is the type for POST /admin/acme/eab requests
@@ -38,48 +34,27 @@ type GetExternalAccountKeysResponse struct {
 func (h *Handler) requireEABEnabled(next http.HandlerFunc) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		ctx := r.Context()
-		provName := chi.URLParam(r, "provisionerName")
+		prov := linkedca.ProvisionerFromContext(ctx)
-		eabEnabled, prov, err := h.provisionerHasEABEnabled(ctx, provName)
-		if err != nil {
-			render.Error(w, err)
-			return
-		}
-		if !eabEnabled {
-			render.Error(w, admin.NewError(admin.ErrorBadRequestType, "ACME EAB not enabled for provisioner %s", prov.GetName()))
-			return
-		}
-		ctx = linkedca.NewContextWithProvisioner(ctx, prov)
-		next(w, r.WithContext(ctx))
-	}
-}
-
-// provisionerHasEABEnabled determines if the "requireEAB" setting for an ACME
-// provisioner is set to true and thus has EAB enabled.
-func (h *Handler) provisionerHasEABEnabled(ctx context.Context, provisionerName string) (bool, *linkedca.Provisioner, error) {
-	var (
-		p   provisioner.Interface
-		err error
-	)
-	if p, err = h.auth.LoadProvisionerByName(provisionerName); err != nil {
-		return false, nil, admin.WrapErrorISE(err, "error loading provisioner %s", provisionerName)
-	}
-
-	prov, err := h.adminDB.GetProvisioner(ctx, p.GetID())
-	if err != nil {
-		return false, nil, admin.WrapErrorISE(err, "error getting provisioner with ID: %s", p.GetID())
-	}
 
 		details := prov.GetDetails()
 		if details == nil {
-		return false, nil, admin.NewErrorISE("error getting details for provisioner with ID: %s", p.GetID())
+			render.Error(w, admin.NewErrorISE("error getting details for provisioner '%s'", prov.GetName()))
+			return
 		}
 
 		acmeProvisioner := details.GetACME()
 		if acmeProvisioner == nil {
-		return false, nil, admin.NewErrorISE("error getting ACME details for provisioner with ID: %s", p.GetID())
+			render.Error(w, admin.NewErrorISE("error getting ACME details for provisioner '%s'", prov.GetName()))
+			return
 		}
 
-	return acmeProvisioner.GetRequireEab(), prov, nil
+		if !acmeProvisioner.RequireEab {
+			render.Error(w, admin.NewError(admin.ErrorBadRequestType, "ACME EAB not enabled for provisioner '%s'", prov.GetName()))
+			return
+		}
+
+		next(w, r.WithContext(ctx))
+	}
 }
 
 type acmeAdminResponderInterface interface {

authority/admin/api/acme_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
@@ -20,7 +19,6 @@ import (
 
 	"github.com/smallstep/assert"
 	"github.com/smallstep/certificates/authority/admin"
-	"github.com/smallstep/certificates/authority/provisioner"
 )
 
 func readProtoJSON(r io.ReadCloser, m proto.Message) error {
@@ -35,50 +33,42 @@ func readProtoJSON(r io.ReadCloser, m proto.Message) error {
 func TestHandler_requireEABEnabled(t *testing.T) {
 	type test struct {
 		ctx        context.Context
-		adminDB    admin.DB
-		auth       adminAuthority
 		next       http.HandlerFunc
 		err        *admin.Error
 		statusCode int
 	}
 	var tests = map[string]func(t *testing.T) test{
-		"fail/h.provisionerHasEABEnabled": func(t *testing.T) test {
+		"fail/prov.GetDetails": func(t *testing.T) test {
-			chiCtx := chi.NewRouteContext()
+			prov := &linkedca.Provisioner{
-			chiCtx.URLParams.Add("provisionerName", "provName")
+				Id:   "provID",
-			ctx := context.WithValue(context.Background(), chi.RouteCtxKey, chiCtx)
+				Name: "provName",
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return nil, errors.New("force")
-				},
 			}
-			err := admin.NewErrorISE("error loading provisioner provName: force")
+			ctx := linkedca.NewContextWithProvisioner(context.Background(), prov)
-			err.Message = "error loading provisioner provName: force"
+			err := admin.NewErrorISE("error getting details for provisioner 'provName'")
+			err.Message = "error getting details for provisioner 'provName'"
+			return test{
+				ctx:        ctx,
+				err:        err,
+				statusCode: 500,
+			}
+		},
+		"fail/details.GetACME": func(t *testing.T) test {
+			prov := &linkedca.Provisioner{
+				Id:      "provID",
+				Name:    "provName",
+				Details: &linkedca.ProvisionerDetails{},
+			}
+			ctx := linkedca.NewContextWithProvisioner(context.Background(), prov)
+			err := admin.NewErrorISE("error getting ACME details for provisioner 'provName'")
+			err.Message = "error getting ACME details for provisioner 'provName'"
 			return test{
 				ctx:        ctx,
-				auth:       auth,
 				err:        err,
 				statusCode: 500,
 			}
 		},
 		"ok/eab-disabled": func(t *testing.T) test {
-			chiCtx := chi.NewRouteContext()
+			prov := &linkedca.Provisioner{
-			chiCtx.URLParams.Add("provisionerName", "provName")
-			ctx := context.WithValue(context.Background(), chi.RouteCtxKey, chiCtx)
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return &linkedca.Provisioner{
 				Id:   "provID",
 				Name: "provName",
 				Details: &linkedca.ProvisionerDetails{
@@ -88,37 +78,18 @@ func TestHandler_requireEABEnabled(t *testing.T) {
 						},
 					},
 				},
-					}, nil
-				},
 			}
+			ctx := linkedca.NewContextWithProvisioner(context.Background(), prov)
 			err := admin.NewError(admin.ErrorBadRequestType, "ACME EAB not enabled for provisioner provName")
-			err.Message = "ACME EAB not enabled for provisioner provName"
+			err.Message = "ACME EAB not enabled for provisioner 'provName'"
 			return test{
 				ctx:        ctx,
-				auth:       auth,
-				adminDB:    db,
 				err:        err,
 				statusCode: 400,
 			}
 		},
 		"ok/eab-enabled": func(t *testing.T) test {
-			chiCtx := chi.NewRouteContext()
+			prov := &linkedca.Provisioner{
-			chiCtx.URLParams.Add("provisionerName", "provName")
-			ctx := context.WithValue(context.Background(), chi.RouteCtxKey, chiCtx)
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return &linkedca.Provisioner{
 				Id:   "provID",
 				Name: "provName",
 				Details: &linkedca.ProvisionerDetails{
@@ -128,13 +99,10 @@ func TestHandler_requireEABEnabled(t *testing.T) {
 						},
 					},
 				},
-					}, nil
-				},
 			}
+			ctx := linkedca.NewContextWithProvisioner(context.Background(), prov)
 			return test{
 				ctx: ctx,
-				auth:    auth,
-				adminDB: db,
 				next: func(w http.ResponseWriter, r *http.Request) {
 					w.Write(nil) // mock response with status 200
 				},
@@ -146,13 +114,9 @@ func TestHandler_requireEABEnabled(t *testing.T) {
 	for name, prep := range tests {
 		tc := prep(t)
 		t.Run(name, func(t *testing.T) {
-			h := &Handler{
+			h := &Handler{}
-				auth:    tc.auth,
-				adminDB: tc.adminDB,
-				acmeDB:  nil,
-			}
 
-			req := httptest.NewRequest("GET", "/foo", nil) // chi routing is prepared in test setup
+			req := httptest.NewRequest("GET", "/foo", nil)
 			req = req.WithContext(tc.ctx)
 			w := httptest.NewRecorder()
 			h.requireEABEnabled(tc.next)(w, req)
@@ -179,216 +143,6 @@ func TestHandler_requireEABEnabled(t *testing.T) {
 	}
 }
 
-func TestHandler_provisionerHasEABEnabled(t *testing.T) {
-	type test struct {
-		adminDB         admin.DB
-		auth            adminAuthority
-		provisionerName string
-		want            bool
-		err             *admin.Error
-	}
-	var tests = map[string]func(t *testing.T) test{
-		"fail/auth.LoadProvisionerByName": func(t *testing.T) test {
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return nil, errors.New("force")
-				},
-			}
-			return test{
-				auth:            auth,
-				provisionerName: "provName",
-				want:            false,
-				err:             admin.WrapErrorISE(errors.New("force"), "error loading provisioner provName"),
-			}
-		},
-		"fail/db.GetProvisioner": func(t *testing.T) test {
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return nil, errors.New("force")
-				},
-			}
-			return test{
-				auth:            auth,
-				adminDB:         db,
-				provisionerName: "provName",
-				want:            false,
-				err:             admin.WrapErrorISE(errors.New("force"), "error loading provisioner provName"),
-			}
-		},
-		"fail/prov.GetDetails": func(t *testing.T) test {
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return &linkedca.Provisioner{
-						Id:      "provID",
-						Name:    "provName",
-						Details: nil,
-					}, nil
-				},
-			}
-			return test{
-				auth:            auth,
-				adminDB:         db,
-				provisionerName: "provName",
-				want:            false,
-				err:             admin.WrapErrorISE(errors.New("force"), "error loading provisioner provName"),
-			}
-		},
-		"fail/details.GetACME": func(t *testing.T) test {
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "provName", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return &linkedca.Provisioner{
-						Id:   "provID",
-						Name: "provName",
-						Details: &linkedca.ProvisionerDetails{
-							Data: &linkedca.ProvisionerDetails_ACME{
-								ACME: nil,
-							},
-						},
-					}, nil
-				},
-			}
-			return test{
-				auth:            auth,
-				adminDB:         db,
-				provisionerName: "provName",
-				want:            false,
-				err:             admin.WrapErrorISE(errors.New("force"), "error loading provisioner provName"),
-			}
-		},
-		"ok/eab-disabled": func(t *testing.T) test {
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "eab-disabled", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return &linkedca.Provisioner{
-						Id:   "provID",
-						Name: "eab-disabled",
-						Details: &linkedca.ProvisionerDetails{
-							Data: &linkedca.ProvisionerDetails_ACME{
-								ACME: &linkedca.ACMEProvisioner{
-									RequireEab: false,
-								},
-							},
-						},
-					}, nil
-				},
-			}
-			return test{
-				adminDB:         db,
-				auth:            auth,
-				provisionerName: "eab-disabled",
-				want:            false,
-			}
-		},
-		"ok/eab-enabled": func(t *testing.T) test {
-			auth := &mockAdminAuthority{
-				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
-					assert.Equals(t, "eab-enabled", name)
-					return &provisioner.MockProvisioner{
-						MgetID: func() string {
-							return "provID"
-						},
-					}, nil
-				},
-			}
-			db := &admin.MockDB{
-				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
-					assert.Equals(t, "provID", id)
-					return &linkedca.Provisioner{
-						Id:   "provID",
-						Name: "eab-enabled",
-						Details: &linkedca.ProvisionerDetails{
-							Data: &linkedca.ProvisionerDetails_ACME{
-								ACME: &linkedca.ACMEProvisioner{
-									RequireEab: true,
-								},
-							},
-						},
-					}, nil
-				},
-			}
-			return test{
-				adminDB:         db,
-				auth:            auth,
-				provisionerName: "eab-enabled",
-				want:            true,
-			}
-		},
-	}
-	for name, prep := range tests {
-		tc := prep(t)
-		t.Run(name, func(t *testing.T) {
-			h := &Handler{
-				auth:    tc.auth,
-				adminDB: tc.adminDB,
-				acmeDB:  nil,
-			}
-			got, prov, err := h.provisionerHasEABEnabled(context.TODO(), tc.provisionerName)
-			if (err != nil) != (tc.err != nil) {
-				t.Errorf("Handler.provisionerHasEABEnabled() error = %v, want err %v", err, tc.err)
-				return
-			}
-			if tc.err != nil {
-				assert.Type(t, &linkedca.Provisioner{}, prov)
-				assert.Type(t, &admin.Error{}, err)
-				adminError, _ := err.(*admin.Error)
-				assert.Equals(t, tc.err.Type, adminError.Type)
-				assert.Equals(t, tc.err.Status, adminError.Status)
-				assert.Equals(t, tc.err.StatusCode(), adminError.StatusCode())
-				assert.Equals(t, tc.err.Message, adminError.Message)
-				assert.Equals(t, tc.err.Detail, adminError.Detail)
-				return
-			}
-			if got != tc.want {
-				t.Errorf("Handler.provisionerHasEABEnabled() = %v, want %v", got, tc.want)
-			}
-		})
-	}
-}
-
 func TestCreateExternalAccountKeyRequest_Validate(t *testing.T) {
 	type fields struct {
 		Reference string

authority/admin/api/handler.go

@@ -62,10 +62,10 @@ func (h *Handler) Route(r api.Router) {
 	r.MethodFunc("DELETE", "/admins/{id}", authnz(h.DeleteAdmin))
 
 	// ACME External Account Binding Keys
-	r.MethodFunc("GET", "/acme/eab/{provisionerName}/{reference}", authnz(requireEABEnabled(h.acmeResponder.GetExternalAccountKeys)))
+	r.MethodFunc("GET", "/acme/eab/{provisionerName}/{reference}", authnz(h.loadProvisionerByName(requireEABEnabled(h.acmeResponder.GetExternalAccountKeys))))
-	r.MethodFunc("GET", "/acme/eab/{provisionerName}", authnz(requireEABEnabled(h.acmeResponder.GetExternalAccountKeys)))
+	r.MethodFunc("GET", "/acme/eab/{provisionerName}", authnz(h.loadProvisionerByName(requireEABEnabled(h.acmeResponder.GetExternalAccountKeys))))
-	r.MethodFunc("POST", "/acme/eab/{provisionerName}", authnz(requireEABEnabled(h.acmeResponder.CreateExternalAccountKey)))
+	r.MethodFunc("POST", "/acme/eab/{provisionerName}", authnz(h.loadProvisionerByName(requireEABEnabled(h.acmeResponder.CreateExternalAccountKey))))
-	r.MethodFunc("DELETE", "/acme/eab/{provisionerName}/{id}", authnz(requireEABEnabled(h.acmeResponder.DeleteExternalAccountKey)))
+	r.MethodFunc("DELETE", "/acme/eab/{provisionerName}/{id}", authnz(h.loadProvisionerByName(requireEABEnabled(h.acmeResponder.DeleteExternalAccountKey))))
 
 	// Policy - Authority
 	r.MethodFunc("GET", "/policy", authnz(enabledInStandalone(h.policyResponder.GetAuthorityPolicy)))
@@ -74,16 +74,14 @@ func (h *Handler) Route(r api.Router) {
 	r.MethodFunc("DELETE", "/policy", authnz(enabledInStandalone(h.policyResponder.DeleteAuthorityPolicy)))
 
 	// Policy - Provisioner
-	//r.MethodFunc("GET", "/provisioners/{name}/policy", noauth(h.policyResponder.GetProvisionerPolicy))
 	r.MethodFunc("GET", "/provisioners/{provisionerName}/policy", authnz(disabledInStandalone(h.loadProvisionerByName(h.policyResponder.GetProvisionerPolicy))))
 	r.MethodFunc("POST", "/provisioners/{provisionerName}/policy", authnz(disabledInStandalone(h.loadProvisionerByName(h.policyResponder.CreateProvisionerPolicy))))
 	r.MethodFunc("PUT", "/provisioners/{provisionerName}/policy", authnz(disabledInStandalone(h.loadProvisionerByName(h.policyResponder.UpdateProvisionerPolicy))))
 	r.MethodFunc("DELETE", "/provisioners/{provisionerName}/policy", authnz(disabledInStandalone(h.loadProvisionerByName(h.policyResponder.DeleteProvisionerPolicy))))
 
 	// Policy - ACME Account
-	// TODO: ensure we don't clash with eab; might want to change eab paths slightly (as long as we don't have it released completely; needs changes in adminClient too)
+	r.MethodFunc("GET", "/acme/policy/{provisionerName}/{accountID}", authnz(disabledInStandalone(h.loadProvisionerByName(h.requireEABEnabled(h.policyResponder.GetACMEAccountPolicy)))))
-	r.MethodFunc("GET", "/acme/{provisionerName}/{accountID}/policy", authnz(disabledInStandalone(h.policyResponder.GetACMEAccountPolicy)))
+	r.MethodFunc("POST", "/acme/policy/{provisionerName}/{accountID}", authnz(disabledInStandalone(h.loadProvisionerByName(h.requireEABEnabled(h.policyResponder.CreateACMEAccountPolicy)))))
-	r.MethodFunc("POST", "/acme/{provisionerName}/{accountID}/policy", authnz(disabledInStandalone(h.policyResponder.CreateACMEAccountPolicy)))
+	r.MethodFunc("PUT", "/acme/policy/{provisionerName}/{accountID}", authnz(disabledInStandalone(h.loadProvisionerByName(h.requireEABEnabled(h.policyResponder.UpdateACMEAccountPolicy)))))
-	r.MethodFunc("PUT", "/acme/{provisionerName}/{accountID}/policy", authnz(disabledInStandalone(h.policyResponder.UpdateACMEAccountPolicy)))
+	r.MethodFunc("DELETE", "/acme/policy/{provisionerName}/{accountID}", authnz(disabledInStandalone(h.loadProvisionerByName(h.requireEABEnabled(h.policyResponder.DeleteACMEAccountPolicy)))))
-	r.MethodFunc("DELETE", "/acme/{provisionerName}/{accountID}/policy", authnz(disabledInStandalone(h.policyResponder.DeleteACMEAccountPolicy)))
 }

authority/admin/api/middleware.go

@@ -59,6 +59,8 @@ func (h *Handler) loadProvisionerByName(next http.HandlerFunc) http.HandlerFunc
 			p   provisioner.Interface
 			err error
 		)
+
+		// TODO(hs): distinguish 404 vs. 500
 		if p, err = h.auth.LoadProvisionerByName(name); err != nil {
 			render.Error(w, admin.WrapErrorISE(err, "error loading provisioner %s", name))
 			return
@@ -66,7 +68,7 @@ func (h *Handler) loadProvisionerByName(next http.HandlerFunc) http.HandlerFunc
 
 		prov, err := h.adminDB.GetProvisioner(ctx, p.GetID())
 		if err != nil {
-			render.Error(w, err)
+			render.Error(w, admin.WrapErrorISE(err, "error retrieving provisioner %s", name))
 			return
 		}
 

authority/admin/api/middleware_test.go

@@ -4,12 +4,14 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 	"time"
 
+	"github.com/go-chi/chi"
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"google.golang.org/protobuf/types/known/timestamppb"
@@ -18,6 +20,7 @@ import (
 
 	"github.com/smallstep/assert"
 	"github.com/smallstep/certificates/authority/admin"
+	"github.com/smallstep/certificates/authority/provisioner"
 )
 
 func TestHandler_requireAPIEnabled(t *testing.T) {
@@ -220,3 +223,136 @@ func TestHandler_extractAuthorizeTokenAdmin(t *testing.T) {
 		})
 	}
 }
+
+func TestHandler_loadProvisionerByName(t *testing.T) {
+	type test struct {
+		adminDB    admin.DB
+		auth       adminAuthority
+		ctx        context.Context
+		next       http.HandlerFunc
+		err        *admin.Error
+		statusCode int
+	}
+	var tests = map[string]func(t *testing.T) test{
+		"fail/auth.LoadProvisionerByName": func(t *testing.T) test {
+			chiCtx := chi.NewRouteContext()
+			chiCtx.URLParams.Add("provisionerName", "provName")
+			ctx := context.WithValue(context.Background(), chi.RouteCtxKey, chiCtx)
+			auth := &mockAdminAuthority{
+				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
+					assert.Equals(t, "provName", name)
+					return nil, errors.New("force")
+				},
+			}
+			err := admin.WrapErrorISE(errors.New("force"), "error loading provisioner provName")
+			err.Message = "error loading provisioner provName: force"
+			return test{
+				ctx:        ctx,
+				auth:       auth,
+				statusCode: 500,
+				err:        err,
+			}
+		},
+		"fail/db.GetProvisioner": func(t *testing.T) test {
+			chiCtx := chi.NewRouteContext()
+			chiCtx.URLParams.Add("provisionerName", "provName")
+			ctx := context.WithValue(context.Background(), chi.RouteCtxKey, chiCtx)
+			auth := &mockAdminAuthority{
+				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
+					assert.Equals(t, "provName", name)
+					return &provisioner.MockProvisioner{
+						MgetID: func() string {
+							return "provID"
+						},
+					}, nil
+				},
+			}
+			db := &admin.MockDB{
+				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
+					assert.Equals(t, "provID", id)
+					return nil, errors.New("force")
+				},
+			}
+			err := admin.WrapErrorISE(errors.New("force"), "error retrieving provisioner provName")
+			err.Message = "error retrieving provisioner provName: force"
+			return test{
+				ctx:        ctx,
+				auth:       auth,
+				adminDB:    db,
+				statusCode: 500,
+				err:        err,
+			}
+		},
+		"ok": func(t *testing.T) test {
+			chiCtx := chi.NewRouteContext()
+			chiCtx.URLParams.Add("provisionerName", "provName")
+			ctx := context.WithValue(context.Background(), chi.RouteCtxKey, chiCtx)
+			auth := &mockAdminAuthority{
+				MockLoadProvisionerByName: func(name string) (provisioner.Interface, error) {
+					assert.Equals(t, "provName", name)
+					return &provisioner.MockProvisioner{
+						MgetID: func() string {
+							return "provID"
+						},
+					}, nil
+				},
+			}
+			db := &admin.MockDB{
+				MockGetProvisioner: func(ctx context.Context, id string) (*linkedca.Provisioner, error) {
+					assert.Equals(t, "provID", id)
+					return &linkedca.Provisioner{
+						Id:   "provID",
+						Name: "provName",
+					}, nil
+				},
+			}
+			return test{
+				ctx:        ctx,
+				auth:       auth,
+				adminDB:    db,
+				statusCode: 200,
+				next: func(w http.ResponseWriter, r *http.Request) {
+					prov := linkedca.ProvisionerFromContext(r.Context())
+					assert.NotNil(t, prov)
+					assert.Equals(t, "provID", prov.GetId())
+					assert.Equals(t, "provName", prov.GetName())
+					w.Write(nil) // mock response with status 200
+				},
+			}
+		},
+	}
+	for name, prep := range tests {
+		tc := prep(t)
+		t.Run(name, func(t *testing.T) {
+			h := &Handler{
+				auth:    tc.auth,
+				adminDB: tc.adminDB,
+			}
+
+			req := httptest.NewRequest("GET", "/foo", nil) // chi routing is prepared in test setup
+			req = req.WithContext(tc.ctx)
+
+			w := httptest.NewRecorder()
+			h.loadProvisionerByName(tc.next)(w, req)
+			res := w.Result()
+
+			assert.Equals(t, tc.statusCode, res.StatusCode)
+
+			body, err := io.ReadAll(res.Body)
+			res.Body.Close()
+			assert.FatalError(t, err)
+
+			if res.StatusCode >= 400 {
+				err := admin.Error{}
+				assert.FatalError(t, json.Unmarshal(bytes.TrimSpace(body), &err))
+
+				assert.Equals(t, tc.err.Type, err.Type)
+				assert.Equals(t, tc.err.Message, err.Message)
+				assert.Equals(t, tc.err.StatusCode(), res.StatusCode)
+				assert.Equals(t, tc.err.Detail, err.Detail)
+				assert.Equals(t, []string{"application/json"}, res.Header["Content-Type"])
+				return
+			}
+		})
+	}
+}