feat: add dependencies scheck

cmd/root.go

@@ -1,9 +1,20 @@
 package cmd
 
-import "github.com/spf13/cobra"
+import (
+	"fmt"
+	"os"
+	"os/exec"
+
+	"github.com/spf13/cobra"
+)
 
 // Run executes the miro CLI and returns a process exit code.
 func Run(args []string) int {
+	if err := ensureDependencies(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		return 1
+	}
+
 	rootCmd := newRootCommand()
 	rootCmd.SetArgs(args)
 
@@ -27,3 +38,13 @@ func newRootCommand() *cobra.Command {
 
 	return rootCmd
 }
+
+func ensureDependencies() error {
+	for _, name := range []string{"bwrap", "screen"} {
+		if _, err := exec.LookPath(name); err != nil {
+			return fmt.Errorf("required command %q not found in PATH", name)
+		}
+	}
+
+	return nil
+}

cmd/root_test.go

@@ -12,6 +12,8 @@ import (
 )
 
 func TestRunShowsHelpWhenNoArgs(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	stdout, stderr := captureOutput(t, func() {
 		if got := Run(nil); got != 0 {
 			t.Fatalf("Run() code = %d, want %d", got, 0)
@@ -30,6 +32,8 @@ func TestRunShowsHelpWhenNoArgs(t *testing.T) {
 }
 
 func TestRunInit(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	stdout, stderr := captureOutput(t, func() {
 		if got := Run([]string{"init"}); got != 0 {
 			t.Fatalf("Run() code = %d, want %d", got, 0)
@@ -45,6 +49,8 @@ func TestRunInit(t *testing.T) {
 }
 
 func TestRunRecord(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	root := t.TempDir()
 	wantDir := filepath.Join(root, "e2e")
 	if err := os.MkdirAll(wantDir, 0o755); err != nil {
@@ -77,6 +83,8 @@ func TestRunRecord(t *testing.T) {
 }
 
 func TestRunRecordWithExplicitTestDirPath(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	root := t.TempDir()
 	wantDir := filepath.Join(root, "e2e")
 	if err := os.MkdirAll(wantDir, 0o755); err != nil {
@@ -105,6 +113,8 @@ func TestRunRecordWithExplicitTestDirPath(t *testing.T) {
 }
 
 func TestRunRecordRejectsAbsolutePathOutsideTestDir(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	root := t.TempDir()
 	wantDir := filepath.Join(root, "e2e")
 	if err := os.MkdirAll(wantDir, 0o755); err != nil {
@@ -131,7 +141,36 @@ func TestRunRecordRejectsAbsolutePathOutsideTestDir(t *testing.T) {
 	})
 }
 
+func TestRunFailsWhenDependenciesMissing(t *testing.T) {
+	root := t.TempDir()
+	wantDir := filepath.Join(root, "e2e")
+	if err := os.MkdirAll(wantDir, 0o755); err != nil {
+		t.Fatalf("MkdirAll() error = %v", err)
+	}
+	addFakeRecordDependencies(t, "screen")
+
+	withWorkingDir(t, root, func() {
+		stdout, stderr := captureOutput(t, func() {
+			if got := Run([]string{"init"}); got != 1 {
+				t.Fatalf("Run() code = %d, want %d", got, 1)
+			}
+		})
+
+		if stdout != "" {
+			t.Fatalf("stdout = %q, want empty", stdout)
+		}
+		if !strings.Contains(stderr, `required command "bwrap" not found in PATH`) {
+			t.Fatalf("stderr = %q, want missing dependency error", stderr)
+		}
+		if _, err := os.Stat(filepath.Join(wantDir, "suite", "spec")); !os.IsNotExist(err) {
+			t.Fatalf("Stat() error = %v, want not exists", err)
+		}
+	})
+}
+
 func TestRunRecordMissingPath(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	stdout, stderr := captureOutput(t, func() {
 		if got := Run([]string{"record"}); got != 1 {
 			t.Fatalf("Run() code = %d, want %d", got, 1)
@@ -150,6 +189,8 @@ func TestRunRecordMissingPath(t *testing.T) {
 }
 
 func TestRunInitExtraArgs(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	stdout, stderr := captureOutput(t, func() {
 		if got := Run([]string{"init", "extra"}); got != 1 {
 			t.Fatalf("Run() code = %d, want %d", got, 1)
@@ -168,6 +209,8 @@ func TestRunInitExtraArgs(t *testing.T) {
 }
 
 func TestRunUnknownCommand(t *testing.T) {
+	addFakeRecordDependencies(t, "bwrap", "screen")
+
 	stdout, stderr := captureOutput(t, func() {
 		if got := Run([]string{"wat"}); got != 1 {
 			t.Fatalf("Run() code = %d, want %d", got, 1)
@@ -247,3 +290,17 @@ func withWorkingDir(t *testing.T, dir string, fn func()) {
 
 	fn()
 }
+
+func addFakeRecordDependencies(t *testing.T, names ...string) {
+	t.Helper()
+
+	binDir := t.TempDir()
+	for _, name := range names {
+		path := filepath.Join(binDir, name)
+		if err := os.WriteFile(path, []byte("#!/bin/sh\nexit 0\n"), 0o755); err != nil {
+			t.Fatalf("WriteFile(%q) error = %v", path, err)
+		}
+	}
+
+	t.Setenv("PATH", binDir)
+}