feature(kuma-cp) example in command, copied schema to tests

app/kumactl/cmd/install/install_postgres_schema.go

@@ -9,10 +9,10 @@ import (
 
 func newInstallPostgresSchemaCmd() *cobra.Command {
 	return &cobra.Command{
-		Use:   "postgres-schema",
-		Short: "Install Kuma on Postgres DB.",
-		Long: `Install Kuma on Postgres DB. You can apply it with following command:
-kumactl install postgres-schema | PGPASSWORD=mysecretpassword psql -h localhost -U postgres`,
+		Use:     "postgres-schema",
+		Short:   "Install Kuma on Postgres DB.",
+		Long:    `Install Kuma on Postgres DB.`,
+		Example: "kumactl install postgres-schema | PGPASSWORD=mysecretpassword psql -h localhost -U postgres",
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			file, err := data.ReadFile(postgres_schema.Schema, "resource.sql")
 			if err != nil {

app/kumactl/cmd/install/install_postgres_schema_test.go

@@ -3,28 +3,28 @@ package install_test
 import (
 	"bytes"
 	"github.com/Kong/kuma/app/kumactl/cmd"
-	"github.com/Kong/kuma/app/kumactl/pkg/install/data"
-	postgres_schema "github.com/Kong/kuma/app/kumactl/pkg/install/universal/control-plane/postgres"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"io/ioutil"
+	"path/filepath"
 )
 
-var _ = Describe("kumactl install control-plane", func() {
+var _ = Describe("kumactl install postgres-schema", func() {
 	It("should give the schema postgres", func() {
 		// given
 		stdout := bytes.Buffer{}
 		rootCmd := cmd.DefaultRootCmd()
 		rootCmd.SetOut(&stdout)
 		rootCmd.SetArgs([]string{"install", "postgres-schema"})
 
-		schemaFile, err := data.ReadFile(postgres_schema.Schema, "resource.sql")
+		bytes, err := ioutil.ReadFile(filepath.Join("testdata", "postgres_schema.sql"))
 		Expect(err).ToNot(HaveOccurred())
 
 		// when
 		err = rootCmd.Execute()
 
 		// then
 		Expect(err).ToNot(HaveOccurred())
-		Expect(string(stdout.Bytes())).To(Equal(string(schemaFile)))
+		Expect(string(stdout.Bytes())).To(Equal(string(bytes)))
 	})
 })

app/kumactl/cmd/install/testdata/postgres_schema.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS resources (
+    name        varchar(100) NOT NULL,
+    namespace   varchar(100) NOT NULL,
+    mesh        varchar(100) NOT NULL,
+    type        varchar(100) NOT NULL,
+    version     integer NOT NULL,
+    spec        text,
+    PRIMARY KEY (name, namespace, mesh, type)
+);

docs/cmd/kumactl/HELP.md

@@ -238,12 +238,14 @@ Global Flags:
 ### kumactl install postgres-schema
 
 ```
-Install Kuma on Postgres DB. You can apply it with following command:
-kumactl install postgres-schema | PGPASSWORD=mysecretpassword psql -h localhost -U postgres
+Install Kuma on Postgres DB.
 
 Usage:
   kumactl install postgres-schema [flags]
 
+Examples:
+kumactl install postgres-schema | PGPASSWORD=mysecretpassword psql -h localhost -U postgres
+
 Flags:
   -h, --help   help for postgres-schema