Rework cmds so they are inline with cobra examples

Signed-off-by: Itxaka <itxaka.garcia@spectrocloud.com>

tools-image/enki/cmd/build-iso_test.go

@@ -0,0 +1,70 @@
+/*
+Copyright © 2022 SUSE LLC
+
+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 cmd
+
+import (
+	"bytes"
+	"fmt"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"github.com/spf13/viper"
+)
+
+var _ = Describe("BuildISO", Label("iso", "cmd"), func() {
+	var buf *bytes.Buffer
+	BeforeEach(func() {
+		buf = new(bytes.Buffer)
+		rootCmd.SetOut(buf)
+		rootCmd.SetErr(buf)
+	})
+	AfterEach(func() {
+		viper.Reset()
+	})
+	It("Errors out if no rootfs sources are defined", Label("flags"), func() {
+		_, _, err := executeCommandC(rootCmd, "build-iso")
+		fmt.Println(buf)
+		Expect(err).ToNot(BeNil())
+		Expect(err.Error()).To(ContainSubstring("rootfs source image for building ISO was not provided"))
+	})
+	It("Errors out if rootfs is a non valid argument", Label("flags"), func() {
+		_, _, err := executeCommandC(rootCmd, "build-iso", "/no/image/reference")
+		Expect(err).ToNot(BeNil())
+		Expect(err.Error()).To(ContainSubstring("invalid image reference"))
+	})
+	It("Errors out if overlay roofs path does not exist", Label("flags"), func() {
+		_, _, err := executeCommandC(
+			rootCmd, "build-iso", "system/cos", "--overlay-rootfs", "/nonexistingpath",
+		)
+		Expect(err).ToNot(BeNil())
+		Expect(err.Error()).To(ContainSubstring("Invalid path"))
+	})
+	It("Errors out if overlay uefi path does not exist", Label("flags"), func() {
+		_, _, err := executeCommandC(
+			rootCmd, "build-iso", "someimage:latest", "--overlay-uefi", "/nonexistingpath",
+		)
+		Expect(err).ToNot(BeNil())
+		Expect(err.Error()).To(ContainSubstring("Invalid path"))
+	})
+	It("Errors out if overlay iso path does not exist", Label("flags"), func() {
+		_, _, err := executeCommandC(
+			rootCmd, "build-iso", "some/image:latest", "--overlay-iso", "/nonexistingpath",
+		)
+		Expect(err).ToNot(BeNil())
+		Expect(err.Error()).To(ContainSubstring("Invalid path"))
+	})
+})