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path: root/app/middleware/require_permission_test.go
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package middleware

import (
	"context"
	"net/http"
	"testing"

	v1 "github.com/authzed/authzed-go/proto/authzed/api/v1"
	"github.com/stretchr/testify/require"
	"github.com/xlgmokha/x/pkg/test"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/cfg"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/domain"
	"google.golang.org/grpc"
)

type MockAbility func(context.Context, *v1.CheckPermissionRequest) (*v1.CheckPermissionResponse, error)

func (m MockAbility) CheckPermission(ctx context.Context, r *v1.CheckPermissionRequest, opts ...grpc.CallOption) (*v1.CheckPermissionResponse, error) {
	return m(ctx, r)
}

func TestRequirePermission(t *testing.T) {
	user := &domain.User{ID: domain.ID("1")}
	ctx := cfg.CurrentUser.With(t.Context(), user)
	permission := Permission("read_sparkles")

	t.Run("when the permission is granted", func(t *testing.T) {
		r, w := test.RequestResponse("GET", "/sparkles", test.WithContext(ctx))

		middleware := RequirePermission(permission, MockAbility(func(ctx context.Context, r *v1.CheckPermissionRequest) (*v1.CheckPermissionResponse, error) {
			require.Equal(t, "user", r.Subject.Object.ObjectType)
			require.Equal(t, user.Username, r.Subject.Object.ObjectId)

			require.Equal(t, permission.String(), r.Permission)

			require.Equal(t, "sparkle", r.Resource.ObjectType)
			require.Equal(t, "*", r.Resource.ObjectId)

			return &v1.CheckPermissionResponse{
				Permissionship: v1.CheckPermissionResponse_PERMISSIONSHIP_HAS_PERMISSION,
			}, nil
		}))
		server := middleware(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			w.WriteHeader(http.StatusTeapot)
		}))
		server.ServeHTTP(w, r)

		require.Equal(t, http.StatusTeapot, w.Code)
	})

	t.Run("when the permission is denied", func(t *testing.T) {
		r, w := test.RequestResponse("GET", "/sparkles", test.WithContext(ctx))

		middleware := RequirePermission(permission, MockAbility(func(ctx context.Context, r *v1.CheckPermissionRequest) (*v1.CheckPermissionResponse, error) {
			return &v1.CheckPermissionResponse{
				Permissionship: v1.CheckPermissionResponse_PERMISSIONSHIP_NO_PERMISSION,
			}, nil
		}))
		server := middleware(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			require.Fail(t, "unexpected call to handler")
		}))

		server.ServeHTTP(w, r)

		require.Equal(t, http.StatusForbidden, w.Code)
	})
}