1 files changed, 112 insertions, 0 deletions
diff --git a/internal/fsutil/path_test.go b/internal/fsutil/path_test.go
new file mode 100644
index 0000000..4b88573
--- /dev/null
+++ b/internal/fsutil/path_test.go
@@ -0,0 +1,112 @@
+package fsutil
+
+import (
+	"os"
+	"os/user"
+	"path/filepath"
+	"testing"
+)
+
+func TestResolveRootPathCreatesDefault(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	root, err := ResolveRootPath("", "~/Yoga")
+	if err != nil {
+		t.Fatalf("resolve root: %v", err)
+	}
+	expected := filepath.Join(home, "Yoga")
+	if root != expected {
+		t.Fatalf("expected %s, got %s", expected, root)
+	}
+	info, err := os.Stat(expected)
+	if err != nil {
+		t.Fatalf("stat default: %v", err)
+	}
+	if !info.IsDir() {
+		t.Fatalf("expected directory at %s", expected)
+	}
+}
+
+func TestResolveRootPathRequiresExisting(t *testing.T) {
+	tmp := t.TempDir()
+	missing := filepath.Join(tmp, "missing")
+	if _, err := ResolveRootPath(missing, "~/Yoga"); err == nil {
+		t.Fatalf("expected error for %s", missing)
+	}
+}
+
+func TestResolveRootPathAllowsFile(t *testing.T) {
+	tmp := t.TempDir()
+	file := filepath.Join(tmp, "video.mp4")
+	if err := os.WriteFile(file, []byte("x"), 0o644); err != nil {
+		t.Fatalf("write file: %v", err)
+	}
+	got, err := ResolveRootPath(file, "~/Yoga")
+	if err != nil {
+		t.Fatalf("resolve root: %v", err)
+	}
+	if got != file {
+		t.Fatalf("expected file path returned, got %s", got)
+	}
+}
+
+func TestExpandPathWithHome(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	custom := filepath.Join(home, "custom")
+	if err := os.MkdirAll(custom, 0o755); err != nil {
+		t.Fatalf("mkdir: %v", err)
+	}
+	got, err := ResolveRootPath("~/custom", "~/Yoga")
+	if err != nil {
+		t.Fatalf("resolve root: %v", err)
+	}
+	expected := filepath.Join(home, "custom")
+	if got != expected {
+		t.Fatalf("expected %s, got %s", expected, got)
+	}
+	if v, err := expandPath("~"); err != nil || v != home {
+		t.Fatalf("expandPath ~ failed: %v %s", err, v)
+	}
+	if _, err := expandPath("~no_such_user/foo"); err == nil {
+		t.Fatalf("expected error for unknown user")
+	}
+	if path, err := expandPath("relative/path"); err != nil || path != "relative/path" {
+		t.Fatalf("expected relative path unchanged, got %s %v", path, err)
+	}
+	if current, err := user.Current(); err == nil {
+		value := "~" + current.Username
+		if p, err := expandPath(value); err != nil || p != current.HomeDir {
+			t.Fatalf("expected home dir %s, got %s (%v)", current.HomeDir, p, err)
+		}
+	}
+}
+
+func TestSplitUserPath(t *testing.T) {
+	user, rest := splitUserPath("~alice/videos")
+	if user != "alice" || rest != "/videos" {
+		t.Fatalf("unexpected split %s %s", user, rest)
+	}
+	user, rest = splitUserPath("~bob")
+	if user != "bob" || rest != "" {
+		t.Fatalf("unexpected split %s %s", user, rest)
+	}
+}
+
+func TestNormalizeRootInput(t *testing.T) {
+	const fallback = "~/Yoga"
+	value, isDefault := normalizeRootInput("", fallback)
+	if !isDefault || value != fallback {
+		t.Fatalf("unexpected normalize result %s %v", value, isDefault)
+	}
+	value, isDefault = normalizeRootInput(" /tmp ", fallback)
+	if isDefault || value != "/tmp" {
+		t.Fatalf("unexpected normalize result %s %v", value, isDefault)
+	}
+}
+
+func TestEnsureRootExistsErrors(t *testing.T) {
+	if _, err := ensureRootExists(filepath.Join(t.TempDir(), "missing"), false); err == nil {
+		t.Fatalf("expected error when creation not allowed")
+	}
+}