refactor(cli): extract commands into own module

cli/cli.go

@@ -0,0 +1,28 @@
+// Root of the CLI.
+package cli
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var allCommands = []*cobra.Command{
+	// cli/start_service.go
+	start,
+	// cli/stop_service.go
+	stop,
+}
+
+// Creates the root of the CLI, with all available commands
+// added to it.
+func GetCli() *cobra.Command {
+	var cli = &cobra.Command{
+		Use:   "spud",
+		Short: "A not-entirely-terrible-way to manage self-hosted services.",
+	}
+
+	for _, command := range allCommands {
+		cli.AddCommand(command)
+	}
+
+	return cli
+}

cli/cli_test.go

@@ -0,0 +1,21 @@
+package cli
+
+import (
+	"testing"
+)
+
+func TestGetCliReturnsNonNil(t *testing.T) {
+	root := GetCli()
+
+	if root == nil {
+		t.Error("Expected to get command pointer, got nil.")
+	}
+}
+
+func TestGetCliReturnsCliRoot(t *testing.T) {
+	root := GetCli()
+
+	if len(root.Commands()) == 0 {
+		t.Error("Expected to find >= 0 commands mapped, found none.")
+	}
+}

cli/start_service.go

@@ -0,0 +1,27 @@
+// Start services
+//
+// Commands related to starting services.
+
+package cli
+
+import (
+	"github.com/spf13/cobra"
+	"log"
+	service "spud/service"
+	service_definition "spud/service_definition"
+)
+
+var start = &cobra.Command{
+	Use:   "start",
+	Short: "Creates or updates a service based on the provided definition.",
+	Run: func(cmd *cobra.Command, args []string) {
+		pathProvided := args[0]
+		def, err := service_definition.GetServiceDefinitionFromFile(pathProvided)
+
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		service.CreateService(def)
+	},
+}

cli/stop_service.go

@@ -0,0 +1,18 @@
+// Stopping services
+//
+// Commands related to stopping services.
+package cli
+
+import (
+	"github.com/spf13/cobra"
+	service "spud/service"
+)
+
+var stop = &cobra.Command{
+	Use:   "stop",
+	Short: "Stops a running service and all of its containers.",
+	Run: func(cmd *cobra.Command, args []string) {
+		serviceName := args[0]
+		service.StopService(serviceName)
+	},
+}

main.go

@@ -1,45 +1,9 @@
 package main
 
 import (
-	"github.com/spf13/cobra"
-	"log"
-
-	service "spud/service"
-	service_definition "spud/service_definition"
+	cli "spud/cli"
 )
 
-var cli = &cobra.Command{
-	Use:   "spud",
-	Short: "A not-entirely-terrible-way to manage self-hosted services.",
-}
-
-var start = &cobra.Command{
-	Use:   "start",
-	Short: "Creates or updates a service based on the provided definition.",
-	Run: func(cmd *cobra.Command, args []string) {
-		pathProvided := args[0]
-		def, err := service_definition.GetServiceDefinitionFromFile(pathProvided)
-
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		service.CreateService(def)
-	},
-}
-
-var stop = &cobra.Command{
-	Use:   "stop",
-	Short: "Stops a running service and all of its containers.",
-	Run: func(cmd *cobra.Command, args []string) {
-		serviceName := args[0]
-		service.StopService(serviceName)
-	},
-}
-
 func main() {
-	cli.AddCommand(start)
-	cli.AddCommand(stop)
-
-	cli.Execute()
+	cli.GetCli().Execute()
 }