From 6a0c5e43c8421c1dc8ce38bd3709f0e44b66b917 Mon Sep 17 00:00:00 2001
From: dmkjfs <dmkjfs@gmail.com>
Date: Thu, 23 Oct 2025 23:02:34 +0300
Subject: [PATCH] cover tree

---
 internal/tree/tree_test.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/internal/tree/tree_test.go b/internal/tree/tree_test.go
index 20df700..d4c8da8 100644
--- a/internal/tree/tree_test.go
+++ b/internal/tree/tree_test.go
@@ -1,6 +1,7 @@
 package tree_test
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 	"testing"
@@ -34,6 +35,12 @@ func (s *TreeSuite) SetupSuite() {
 	s.tree = t.Tree{WorkDir: workdir}
 }
 
+func (s *TreeSuite) TestCopy() {
+    response := s.tree.Copy()
+
+    assert.Equal(s.T(), t.Tree{WorkDir: s.tree.WorkDir}, response)
+}
+
 func (s *TreeSuite) TestList() {
     response, err := s.tree.List(s.dir)
     assert.Nil(s.T(), err)
@@ -46,12 +53,26 @@ func (s *TreeSuite) TestList() {
 
 func (s *TreeSuite) TestChdir() {
     err := s.tree.Chdir("non_existing_dir")
+    wd := s.tree.WorkDir
+
+    assert.NotNil(s.T(), err)
+    assert.EqualError(s.T(), err, "\"non_existing_dir\": no such file or directory")
+    assert.Equal(s.T(), wd, s.tree.WorkDir)
+
+    err = s.tree.Chdir(filepath.Join("..", "..", "testdata", "results.json"))
     assert.NotNil(s.T(), err)
+    assert.EqualError(
+        s.T(),
+        err,
+        fmt.Sprintf("\"%s\" is not a directory", filepath.Join("..", "..", "testdata", "results.json")),
+    )
 
     err = s.tree.Chdir(filepath.Join("..", "..", "testdata"))
     assert.Nil(s.T(), err)
+    assert.Equal(s.T(), filepath.Join(wd, "..", "..", "testdata"), s.tree.WorkDir)
 
     err = s.tree.Chdir(filepath.Join("..", "internal", "tree"))
+    assert.Equal(s.T(), wd, s.tree.WorkDir)
     assert.Nil(s.T(), err)
 }