feat: test pkg watcher

pkg/watcher/test-script.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+echo "hello"

pkg/watcher/watcher_test.go

@@ -0,0 +1,32 @@
+package watcher
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var (
+	binaryPath = "/bin/bash"
+	scriptPath = "./test-script.sh"
+)
+
+func TestDeploy(t *testing.T) {
+	err := Deploy(binaryPath, scriptPath)
+	require.NoError(t, err)
+}
+
+func TestDeployError(t *testing.T) {
+	err := Deploy("", "")
+	require.Error(t, err)
+}
+
+func TestExecute(t *testing.T) {
+	err := execute(binaryPath, scriptPath)
+	require.NoError(t, err)
+}
+
+func TestExecuteError(t *testing.T) {
+	err := execute("", "")
+	require.Error(t, err)
+}