add test workflows to cmd pkg (#53)

* add test workflows to cmd pkg

* list-options as well

* add more tests

* test entrypoint as well

* update exit code 1 test

cmd/execute_test.go

@@ -0,0 +1,45 @@
+package cmd
+
+import (
+	"context"
+	"os"
+	"testing"
+)
+
+// Helper function to test main with different os.Args
+func testMain(args []string) (exitCode int) {
+	// Save original os.Args and defer restoring it
+	origArgs := os.Args
+	defer func() { os.Args = origArgs }()
+
+	// Save original os.Exit and defer restoring it
+	defer func() { exitFunc = os.Exit }()
+
+	// Mock os.Exit
+	fakeExit := func(code int) {
+		exitCode = code
+	}
+	exitFunc = fakeExit
+
+	// Mock os.Args
+	os.Args = args
+
+	// Run the main function
+	Execute(context.Background(), "")
+
+	return exitCode
+}
+
+func TestMainHelp(t *testing.T) {
+	exitCode := testMain([]string{"cmd", "--help"})
+	if exitCode != 0 {
+		t.Errorf("Expected exit code 0, got %d", exitCode)
+	}
+}
+
+func TestMainNoArgsError(t *testing.T) {
+	exitCode := testMain([]string{"cmd"})
+	if exitCode != 1 {
+		t.Errorf("Expected exit code 1, got %d", exitCode)
+	}
+}