fix: make usrlocalsharelima.Dir() testable

This commit makes the Dir() function testable.

Signed-off-by: Konikz <[email protected]>

Author: Konikz

Diff for: pkg/usrlocalsharelima/usrlocalsharelima_test.go

@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: Copyright The Lima Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package usrlocalsharelima
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/lima-vm/lima/pkg/limayaml"
+	"gotest.tools/v3/assert"
+)
+
+func TestDir(t *testing.T) {
+	// Create a temporary directory for testing
+	tmpDir := t.TempDir()
+
+	// Create the expected directory structure
+	shareDir := filepath.Join(tmpDir, "share", "lima")
+	err := os.MkdirAll(filepath.Join(shareDir, "bin"), 0755)
+	assert.NilError(t, err)
+
+	// Create a dummy guest agent binary
+	gaBinary := filepath.Join(shareDir, "bin", "lima-guestagent."+limayaml.NewArch(runtime.GOARCH))
+	err = os.WriteFile(gaBinary, []byte("dummy content"), 0755)
+	assert.NilError(t, err)
+
+	// Override os.Executable for testing
+	originalExecutable := executable
+	defer func() {
+		executable = originalExecutable
+	}()
+	executable = func() (string, error) {
+		return filepath.Join(tmpDir, "bin", "limactl"), nil
+	}
+
+	// Create bin directory
+	err = os.MkdirAll(filepath.Join(tmpDir, "bin"), 0755)
+	assert.NilError(t, err)
+
+	// Test that Dir() returns the correct path
+	dir, err := Dir()
+	assert.NilError(t, err)
+	assert.Equal(t, dir, filepath.Join(shareDir, "bin"))
+}