fix and add some tests

pkg/op/mock/key.mock.go

@@ -0,0 +1,51 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/caos/oidc/pkg/op (interfaces: KeyProvider)
+
+// Package mock is a generated GoMock package.
+package mock
+
+import (
+	context "context"
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+	jose "gopkg.in/square/go-jose.v2"
+)
+
+// MockKeyProvider is a mock of KeyProvider interface.
+type MockKeyProvider struct {
+	ctrl     *gomock.Controller
+	recorder *MockKeyProviderMockRecorder
+}
+
+// MockKeyProviderMockRecorder is the mock recorder for MockKeyProvider.
+type MockKeyProviderMockRecorder struct {
+	mock *MockKeyProvider
+}
+
+// NewMockKeyProvider creates a new mock instance.
+func NewMockKeyProvider(ctrl *gomock.Controller) *MockKeyProvider {
+	mock := &MockKeyProvider{ctrl: ctrl}
+	mock.recorder = &MockKeyProviderMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockKeyProvider) EXPECT() *MockKeyProviderMockRecorder {
+	return m.recorder
+}
+
+// GetKeySet mocks base method.
+func (m *MockKeyProvider) GetKeySet(arg0 context.Context) (*jose.JSONWebKeySet, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "GetKeySet", arg0)
+	ret0, _ := ret[0].(*jose.JSONWebKeySet)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// GetKeySet indicates an expected call of GetKeySet.
+func (mr *MockKeyProviderMockRecorder) GetKeySet(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetKeySet", reflect.TypeOf((*MockKeyProvider)(nil).GetKeySet), arg0)
+}