deploy: add API for getting OpenShift SecurityContextConstraints

This new Go module allows other projects (like Rook) to consume
deployment details (the SCC to get started) directly from Ceph-CSI.

Based-on: https://github.com/rook/rook/blob/3c93eb3/cluster/examples/kubernetes/ceph/operator-openshift.yaml#L47-L90
Signed-off-by: Niels de Vos <ndevos@redhat.com>

api/deploy/ocp/scc_test.go

@@ -0,0 +1,91 @@
+/*
+Copyright 2021 The Ceph-CSI Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package ocp
+
+import (
+	"strings"
+	"testing"
+
+	secv1 "github.com/openshift/api/security/v1"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewSecurityContextConstraints(t *testing.T) {
+	t.Parallel()
+
+	t.Run("SecurityContextConstraintsDefaults", func(t *testing.T) {
+		var (
+			err error
+			scc *secv1.SecurityContextConstraints
+		)
+
+		getSCC := func() {
+			scc, err = NewSecurityContextConstraints(SecurityContextConstraintsDefaults)
+		}
+
+		require.NotPanics(t, getSCC)
+		require.Nil(t, err)
+		require.NotNil(t, scc)
+
+		require.Equal(t, scc.Name, "ceph-csi")
+		for _, user := range scc.Users {
+			require.True(t, strings.HasPrefix(user, "system:serviceaccount:ceph-csi:csi"))
+		}
+	})
+
+	t.Run("DeployerRook", func(t *testing.T) {
+		var (
+			err error
+			scc *secv1.SecurityContextConstraints
+		)
+
+		rookValues := SecurityContextConstraintsValues{
+			Namespace: "rook-ceph",
+			Deployer: "rook",
+		}
+
+		getSCC := func() {
+			scc, err = NewSecurityContextConstraints(rookValues)
+		}
+
+		require.NotPanics(t, getSCC)
+		require.Nil(t, err)
+		require.NotNil(t, scc)
+
+		require.Equal(t, scc.Name, "rook-ceph-csi")
+		for _, user := range scc.Users {
+			require.True(t, strings.HasPrefix(user, "system:serviceaccount:rook-ceph:rook-csi"))
+		}
+	})
+}
+
+func TestNewSecurityContextConstraintsYAML(t *testing.T) {
+	t.Parallel()
+
+	var (
+		err error
+		yaml string
+	)
+
+	getYAML := func() {
+		yaml, err = NewSecurityContextConstraintsYAML(SecurityContextConstraintsDefaults)
+	}
+
+	require.NotPanics(t, getYAML)
+	require.Nil(t, err)
+	require.NotEqual(t, "", yaml)
+}