fine tuning, added test, which hangs, but yanking works anyway

lib/yank_test.go

@@ -0,0 +1,70 @@
+/*
+Copyright © 2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/atotto/clipboard"
+	"github.com/tlinden/tablizer/cfg"
+)
+
+var yanktests = []struct {
+	name   string
+	yank   []int // -y$colum,$column... after processing
+	filter string
+	expect string
+}{
+	{
+		name:   "one",
+		yank:   []int{1},
+		filter: "beta",
+	},
+}
+
+func DISABLED_TestYankColumns(t *testing.T) {
+	for _, testdata := range yanktests {
+		testname := fmt.Sprintf("yank-%s-filter-%s",
+			testdata.name, testdata.filter)
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{
+				OutputMode:     cfg.ASCII,
+				UseYankColumns: testdata.yank,
+				NoColor:        true,
+			}
+
+			conf.ApplyDefaults()
+			data := newData() // defined in printer_test.go, reused here
+
+			var writer bytes.Buffer
+			printData(&writer, conf, &data)
+
+			got, err := clipboard.ReadAll() // hangs indefinetly
+			if err != nil {
+				t.Errorf("failed to fetch yanked text from clipboard")
+			}
+
+			if got != testdata.expect {
+				t.Errorf("not yanked correctly:\n+++ got:\n%s\n+++ want:\n%s",
+					got, testdata.expect)
+			}
+		})
+	}
+}