Add Unit Test For Case When There Is An Error

Author: mahadzaryab1

script_test.go

@@ -1286,6 +1286,39 @@ func TestFindFiles_InNonexistentPathReturnsError(t *testing.T) {
 	}
 }
 
+func TestFindFiles_DoesNotErrorWhenSubDirectoryIsNotReadable(t *testing.T) {
+	t.Parallel()
+	tmpDir := t.TempDir()
+	fileAPath := filepath.Join(tmpDir, "file_a.txt")
+	if err := os.WriteFile(fileAPath, []byte("hello world!"), os.ModePerm); err != nil {
+		t.Fatal(err)
+	}
+	restrictedDirPath := filepath.Join(tmpDir, "restricted_dir")
+	if err := os.Mkdir(restrictedDirPath, os.ModePerm); err != nil {
+		t.Fatal(err)
+	}
+	fileBPath := filepath.Join(restrictedDirPath, "file_b.txt")
+	if err := os.WriteFile(fileBPath, []byte("hello again!"), os.ModePerm); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chmod(restrictedDirPath, 0o000); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { os.Chmod(restrictedDirPath, os.ModePerm) })
+	p := script.FindFiles(tmpDir)
+	if p.Error() != nil {
+		t.Fatal(p.Error())
+	}
+	want := fileAPath + "\n"
+	got, err := p.String()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !cmp.Equal(want, got) {
+		t.Fatal(cmp.Diff(want, got))
+	}
+}
+
 func TestIfExists_ProducesErrorPlusNoOutputForNonexistentFile(t *testing.T) {
 	t.Parallel()
 	want := ""