geometry_linux_test.go RawHistoryFolder

1//go:build linux
2
3package pty
4
5import (
6	"os"
7	"syscall"
8	"testing"
9
10	"github.com/bnema/vev/internal/domain"
11	"github.com/bnema/vev/pkg/rawterm"
12)
13
14func TestSetGeometryPreservesPixelDimensions(t *testing.T) {
15	masterFD, err := syscall.Open("/dev/ptmx", syscall.O_RDWR|syscall.O_NOCTTY|syscall.O_CLOEXEC, 0)
16	if err != nil {
17		t.Skipf("open /dev/ptmx: %v", err)
18	}
19	master := os.NewFile(uintptr(masterFD), "pty-master")
20	defer func() {
21		if err := master.Close(); err != nil {
22			t.Errorf("close master: %v", err)
23		}
24	}()
25	slave, err := rawterm.PreparePty(masterFD)
26	if err != nil {
27		t.Fatalf("PreparePty: %v", err)
28	}
29	defer func() {
30		if err := slave.Close(); err != nil {
31			t.Errorf("close slave: %v", err)
32		}
33	}()
34
35	geometry := domain.Geometry{Size: domain.Size{Cols: 80, Rows: 24}, PixelWidth: 640, PixelHeight: 384}
36	if err := setGeometry(masterFD, geometry); err != nil {
37		t.Fatalf("setGeometry: %v", err)
38	}
39	got, err := rawterm.GetWinsize(int(slave.Fd()))
40	if err != nil {
41		t.Fatalf("GetWinsize: %v", err)
42	}
43	want := rawterm.Winsize{Col: 80, Row: 24, Xpixel: 640, Ypixel: 384}
44	if got != want {
45		t.Fatalf("winsize = %+v, want %+v", got, want)
46	}
47}