Add support for configmap of headers to be sent to external auth service

internal/ingress/resolver/mock.go

@@ -17,6 +17,8 @@ limitations under the License.
 package resolver
 
 import (
+	"errors"
+
 	apiv1 "k8s.io/api/core/v1"
 
 	"k8s.io/ingress-nginx/internal/ingress/defaults"
@@ -24,6 +26,7 @@ import (
 
 // Mock implements the Resolver interface
 type Mock struct {
+	ConfigMaps map[string]*apiv1.ConfigMap
 }
 
 // GetDefaultBackend returns the backend that must be used as default
@@ -31,11 +34,6 @@ func (m Mock) GetDefaultBackend() defaults.Backend {
 	return defaults.Backend{}
 }
 
-// GetConfigMap searches for configmap containing the namespace and name usting the character /
-func (m Mock) GetConfigMap(string) (*apiv1.ConfigMap, error) {
-	return nil, nil
-}
-
 // GetSecret searches for secrets contenating the namespace and name using a the character /
 func (m Mock) GetSecret(string) (*apiv1.Secret, error) {
 	return nil, nil
@@ -52,3 +50,11 @@ func (m Mock) GetAuthCertificate(string) (*AuthSSLCert, error) {
 func (m Mock) GetService(string) (*apiv1.Service, error) {
 	return nil, nil
 }
+
+// GetConfigMap searches for configMaps contenating the namespace and name using a the character /
+func (m Mock) GetConfigMap(name string) (*apiv1.ConfigMap, error) {
+	if v, ok := m.ConfigMaps[name]; ok {
+		return v, nil
+	}
+	return nil, errors.New("no configmap")
+}