internal/testsuite: move from test

This structure is a lot less clumsy than the old nix-centric layout.

Signed-off-by: Ophestra <cat@gensokyo.uk>

12 files changed, 0 insertions, 1417 deletions

diff --git a/test/internal/mountinfo/mountinfo.go b/test/internal/mountinfo/mountinfo.go
deleted file mode 100644
index 19892cd2..00000000
--- a/test/internal/mountinfo/mountinfo.go
+++ /dev/null
@@ -1,177 +0,0 @@
-// Package mountinfo provides util-linux bindings for parsing
-// proc_pid_mountinfo(5).
-//
-// This package must never be used outside integration tests, a much better
-// implementation can be found in package vfs.
-//
-// Attempting to import this package outside testing causes the resulting
-// program to panic.
-package mountinfo
-
-/*
-#cgo linux pkg-config: --static mount
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <libmount.h>
-
-const char *HAKUREI_MOUNTINFO_PATH = "/proc/self/mountinfo";
-*/
-import "C"
-
-import (
-	"errors"
-	"fmt"
-	"runtime"
-	"unsafe"
-)
-
-var (
-	// ErrParse is returned by [Open] when encountering a bad record.
-	ErrParse = errors.New("invalid mountinfo record")
-	// ErrIter is returned by [Open] if an iterator cannot be allocated.
-	ErrIter = errors.New("cannot allocate iterator")
-	// ErrIterAdvance is stored when the iterator is unable to advance.
-	ErrIterAdvance = errors.New("unable to advance iterator")
-)
-
-type (
-	// Iter refers to libmnt iterator state.
-	Iter struct {
-		// Last stored error.
-		err error
-		// Whether iteration has concluded.
-		ok bool
-		// Whether Close had already been called.
-		closed bool
-
-		tb  *C.struct_libmnt_table
-		itr *C.struct_libmnt_iter
-
-		fs *C.struct_libmnt_fs
-	}
-
-	// Entry represents deterministic mountinfo parts of a libmnt_fs entry.
-	Entry struct {
-		// mount ID: a unique ID for the mount (may be reused after umount(2)).
-		ID int `json:"id"`
-		// parent ID: the ID of the parent mount (or of self for the root of
-		// this mount namespace's mount tree).
-		Parent int `json:"parent"`
-		// root: the pathname of the directory in the filesystem which forms the
-		// root of this mount.
-		Root string `json:"root"`
-		// mount point: the pathname of the mount point relative to the
-		// process's root directory.
-		Target string `json:"target"`
-		// mount options: per-mount options (see mount(2)).
-		VfsOptstr string `json:"vfs_optstr"`
-		// filesystem type: the filesystem type in the form "type[.subtype]".
-		FsType string `json:"fstype"`
-		// mount source: filesystem-specific information or "none".
-		Source string `json:"source"`
-		// super options: per-superblock options (see mount(2)).
-		FsOptstr string `json:"fs_optstr"`
-	}
-)
-
-// Copy populates v with the current record.
-func (m *Iter) Copy(v *Entry) {
-	if m.fs == nil {
-		panic("invalid entry")
-	}
-	v.ID = int(C.mnt_fs_get_id(m.fs))
-	v.Parent = int(C.mnt_fs_get_parent_id(m.fs))
-	v.Root = C.GoString(C.mnt_fs_get_root(m.fs))
-	v.Target = C.GoString(C.mnt_fs_get_target(m.fs))
-	v.VfsOptstr = C.GoString(C.mnt_fs_get_vfs_options(m.fs))
-	v.FsType = C.GoString(C.mnt_fs_get_fstype(m.fs))
-	v.Source = C.GoString(C.mnt_fs_get_source(m.fs))
-	v.FsOptstr = C.GoString(C.mnt_fs_get_fs_options(m.fs))
-}
-
-// Err returns the saved iterator error.
-func (m *Iter) Err() error { return m.err }
-
-// Open opens a mountinfo document. If name is an empty string, the mountinfo
-// document of the current process is opened instead.
-func Open(name string) (*Iter, error) {
-	var m Iter
-	if name == "" {
-		m.tb = C.mnt_new_table_from_file(C.HAKUREI_MOUNTINFO_PATH)
-	} else {
-		_name := C.CString(name)
-		m.tb = C.mnt_new_table_from_file(_name)
-		C.free(unsafe.Pointer(_name))
-	}
-	if m.tb == nil {
-		return nil, ErrParse
-	}
-	m.itr = C.mnt_new_iter(C.MNT_ITER_FORWARD)
-	if m.itr == nil {
-		C.mnt_unref_table(m.tb)
-		return nil, ErrIter
-	}
-	m.ok = true
-
-	runtime.SetFinalizer(&m, (*Iter).Close)
-	return &m, nil
-}
-
-// Close frees the iterator.
-func (m *Iter) Close() {
-	if m.closed {
-		return
-	}
-	if m.tb == nil {
-		panic("unref called before open")
-	}
-
-	C.mnt_unref_table(m.tb)
-	C.mnt_free_iter(m.itr)
-	m.closed = true
-	runtime.SetFinalizer(m, nil)
-}
-
-// Reset resets the iterator to the first record for reuse.
-func (m *Iter) Reset() {
-	if m.err != nil {
-		panic("attempting to reset a faulted iterator")
-	}
-	m.ok = true
-	C.mnt_reset_iter(m.itr, -1)
-}
-
-// Next advances the iterator to the next record. The record may be copied if
-// Next returns true.
-func (m *Iter) Next() bool {
-	if !m.ok || m.err != nil {
-		return false
-	}
-
-	r := C.mnt_table_next_fs(m.tb, m.itr, &m.fs)
-	if r < 0 {
-		m.err = ErrIterAdvance
-	}
-	m.ok = r == 0
-	return m.ok
-}
-
-// EqualWithIgnore compares e with want, ignoring fields with the specified
-// ignore value.
-func (e *Entry) EqualWithIgnore(want *Entry, ignore string) bool {
-	return (e.ID == want.ID || want.ID == -1) &&
-		(e.Parent == want.Parent || want.Parent == -1) &&
-		(e.Root == want.Root || want.Root == ignore) &&
-		(e.Target == want.Target || want.Target == ignore) &&
-		(e.VfsOptstr == want.VfsOptstr || want.VfsOptstr == ignore) &&
-		(e.FsType == want.FsType || want.FsType == ignore) &&
-		(e.Source == want.Source || want.Source == ignore) &&
-		(e.FsOptstr == want.FsOptstr || want.FsOptstr == ignore)
-}
-
-// String returns a text representation of e loosely following the kernel format.
-func (e *Entry) String() string {
-	return fmt.Sprintf("%d %d %s %s %s %s %s %s",
-		e.ID, e.Parent, e.Root, e.Target, e.VfsOptstr, e.FsType, e.Source, e.FsOptstr)
-}
diff --git a/test/internal/mountinfo/mountinfo_guard.go b/test/internal/mountinfo/mountinfo_guard.go
deleted file mode 100644
index aaf63ac4..00000000
--- a/test/internal/mountinfo/mountinfo_guard.go
+++ /dev/null
@@ -1,15 +0,0 @@
-//go:build !testsuite && !tester
-
-package mountinfo
-
-import (
-	"os"
-	"testing"
-)
-
-func init() {
-	if !testing.Testing() {
-		println("package mountinfo imported in non-testsuite program")
-		os.Exit(1)
-	}
-}
diff --git a/test/internal/mountinfo/mountinfo_test.go b/test/internal/mountinfo/mountinfo_test.go
deleted file mode 100644
index 45cfdf5f..00000000
--- a/test/internal/mountinfo/mountinfo_test.go
+++ /dev/null
@@ -1,146 +0,0 @@
-package mountinfo_test
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"hakurei.app/test/internal/mountinfo"
-)
-
-func TestMountinfo(t *testing.T) {
-	testCases := []struct {
-		name string
-
-		sample string
-		want   []*mountinfo.Entry
-	}{
-		{"util-linux", `15 20 0:3 / /proc rw,relatime - proc /proc rw
-16 20 0:15 / /sys rw,relatime - sysfs /sys rw
-17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=1983516k,nr_inodes=495879,mode=755
-18 17 0:10 / /dev/pts rw,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
-19 17 0:16 / /dev/shm rw,relatime - tmpfs tmpfs rw
-20 1 8:4 / / rw,noatime - ext3 /dev/sda4 rw,errors=continue,user_xattr,acl,barrier=0,data=ordered
-21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755
-22 21 0:18 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
-23 21 0:19 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset
-24 21 0:20 / /sys/fs/cgroup/ns rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,ns
-25 21 0:21 / /sys/fs/cgroup/cpu rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu
-26 21 0:22 / /sys/fs/cgroup/cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuacct
-27 21 0:23 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory
-28 21 0:24 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices
-29 21 0:25 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer
-30 21 0:26 / /sys/fs/cgroup/net_cls rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,net_cls
-31 21 0:27 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio
-32 16 0:28 / /sys/kernel/security rw,relatime - autofs systemd-1 rw,fd=22,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
-33 17 0:29 / /dev/hugepages rw,relatime - autofs systemd-1 rw,fd=23,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
-34 16 0:30 / /sys/kernel/debug rw,relatime - autofs systemd-1 rw,fd=24,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
-35 15 0:31 / /proc/sys/fs/binfmt_misc rw,relatime - autofs systemd-1 rw,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
-36 17 0:32 / /dev/mqueue rw,relatime - autofs systemd-1 rw,fd=26,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
-37 15 0:14 / /proc/bus/usb rw,relatime - usbfs /proc/bus/usb rw
-38 33 0:33 / /dev/hugepages rw,relatime - hugetlbfs hugetlbfs rw
-39 36 0:12 / /dev/mqueue rw,relatime - mqueue mqueue rw
-40 20 8:6 / /boot rw,noatime - ext3 /dev/sda6 rw,errors=continue,barrier=0,data=ordered
-41 20 253:0 / /home/kzak rw,noatime - ext4 /dev/mapper/kzak-home rw,barrier=1,data=ordered
-42 35 0:34 / /proc/sys/fs/binfmt_misc rw,relatime - binfmt_misc none rw
-43 16 0:35 / /sys/fs/fuse/connections rw,relatime - fusectl fusectl rw
-44 41 0:36 / /home/kzak/.gvfs rw,nosuid,nodev,relatime - fuse.gvfs-fuse-daemon gvfs-fuse-daemon rw,user_id=500,group_id=500
-45 20 0:37 / /var/lib/nfs/rpc_pipefs rw,relatime - rpc_pipefs sunrpc rw
-47 20 0:38 / /mnt/sounds rw,relatime - cifs //foo.home/bar/ rw,unc=\\foo.home\bar,username=kzak,domain=SRGROUP,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.111.1,posixpaths,serverino,acl,rsize=16384,wsize=57344
-49 20 0:56 / /mnt/test/foobar rw,relatime,nosymfollow shared:323 - tmpfs tmpfs rw`, []*mountinfo.Entry{
-			e(15, 20, "/", "/proc", "rw,relatime", "proc", "/proc", "rw"),
-			e(16, 20, "/", "/sys", "rw,relatime", "sysfs", "/sys", "rw"),
-			e(17, 20, "/", "/dev", "rw,relatime", "devtmpfs", "udev", "rw,size=1983516k,nr_inodes=495879,mode=755"),
-			e(18, 17, "/", "/dev/pts", "rw,relatime", "devpts", "devpts", "rw,gid=5,mode=620,ptmxmode=000"),
-			e(19, 17, "/", "/dev/shm", "rw,relatime", "tmpfs", "tmpfs", "rw"),
-			e(20, 1, "/", "/", "rw,noatime", "ext3", "/dev/sda4", "rw,errors=continue,user_xattr,acl,barrier=0,data=ordered"),
-			e(21, 16, "/", "/sys/fs/cgroup", "rw,nosuid,nodev,noexec,relatime", "tmpfs", "tmpfs", "rw,mode=755"),
-			e(22, 21, "/", "/sys/fs/cgroup/systemd", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd"),
-			e(23, 21, "/", "/sys/fs/cgroup/cpuset", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,cpuset"),
-			e(24, 21, "/", "/sys/fs/cgroup/ns", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,ns"),
-			e(25, 21, "/", "/sys/fs/cgroup/cpu", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,cpu"),
-			e(26, 21, "/", "/sys/fs/cgroup/cpuacct", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,cpuacct"),
-			e(27, 21, "/", "/sys/fs/cgroup/memory", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,memory"),
-			e(28, 21, "/", "/sys/fs/cgroup/devices", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,devices"),
-			e(29, 21, "/", "/sys/fs/cgroup/freezer", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,freezer"),
-			e(30, 21, "/", "/sys/fs/cgroup/net_cls", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,net_cls"),
-			e(31, 21, "/", "/sys/fs/cgroup/blkio", "rw,nosuid,nodev,noexec,relatime", "cgroup", "cgroup", "rw,blkio"),
-			e(32, 16, "/", "/sys/kernel/security", "rw,relatime", "autofs", "systemd-1", "rw,fd=22,pgrp=1,timeout=300,minproto=5,maxproto=5,direct"),
-			e(33, 17, "/", "/dev/hugepages", "rw,relatime", "autofs", "systemd-1", "rw,fd=23,pgrp=1,timeout=300,minproto=5,maxproto=5,direct"),
-			e(34, 16, "/", "/sys/kernel/debug", "rw,relatime", "autofs", "systemd-1", "rw,fd=24,pgrp=1,timeout=300,minproto=5,maxproto=5,direct"),
-			e(35, 15, "/", "/proc/sys/fs/binfmt_misc", "rw,relatime", "autofs", "systemd-1", "rw,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct"),
-			e(36, 17, "/", "/dev/mqueue", "rw,relatime", "autofs", "systemd-1", "rw,fd=26,pgrp=1,timeout=300,minproto=5,maxproto=5,direct"),
-			e(37, 15, "/", "/proc/bus/usb", "rw,relatime", "usbfs", "/proc/bus/usb", "rw"),
-			e(38, 33, "/", "/dev/hugepages", "rw,relatime", "hugetlbfs", "hugetlbfs", "rw"),
-			e(39, 36, "/", "/dev/mqueue", "rw,relatime", "mqueue", "mqueue", "rw"),
-			e(40, 20, "/", "/boot", "rw,noatime", "ext3", "/dev/sda6", "rw,errors=continue,barrier=0,data=ordered"),
-			e(41, 20, "/", "/home/kzak", "rw,noatime", "ext4", "/dev/mapper/kzak-home", "rw,barrier=1,data=ordered"),
-			e(42, 35, "/", "/proc/sys/fs/binfmt_misc", "rw,relatime", "binfmt_misc", "none", "rw"),
-			e(43, 16, "/", "/sys/fs/fuse/connections", "rw,relatime", "fusectl", "fusectl", "rw"),
-			e(44, 41, "/", "/home/kzak/.gvfs", "rw,nosuid,nodev,relatime", "fuse.gvfs-fuse-daemon", "gvfs-fuse-daemon", "rw,user_id=500,group_id=500"),
-			e(45, 20, "/", "/var/lib/nfs/rpc_pipefs", "rw,relatime", "rpc_pipefs", "sunrpc", "rw"),
-			e(47, 20, "/", "/mnt/sounds", "rw,relatime", "cifs", "//foo.home/bar/", "rw,unc=\\\\foo.home\\bar,username=kzak,domain=SRGROUP,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.111.1,posixpaths,serverino,acl,rsize=16384,wsize=57344"),
-			e(49, 20, "/", "/mnt/test/foobar", "rw,relatime,nosymfollow", "tmpfs", "tmpfs", "rw"),
-		}},
-	}
-
-	for _, tc := range testCases {
-		name := filepath.Join(t.TempDir(), "sample")
-		if err := os.WriteFile(name, []byte(tc.sample), 0400); err != nil {
-			t.Fatalf("cannot write sample: %v", err)
-		}
-
-		t.Run(tc.name, func(t *testing.T) {
-			m, err := mountinfo.Open(name)
-			if err != nil {
-				t.Fatalf("Open: error = %v", err)
-			}
-			t.Cleanup(m.Close)
-
-			i := 0
-			var ent mountinfo.Entry
-			for m.Next() {
-				m.Copy(&ent)
-
-				if i == len(tc.want) {
-					t.Errorf("Next: got more than %d entries", i)
-					t.FailNow()
-				}
-				if !ent.EqualWithIgnore(tc.want[i], "\x00") {
-					t.Errorf("Next: entry %d\n got: %#v\nwant: %#v", i,
-						ent, &tc.want[i])
-					t.FailNow()
-				} else {
-					t.Logf("%s", &ent)
-				}
-
-				i++
-			}
-
-			if err = m.Err(); err != nil {
-				t.Fatalf("Err: %v", err)
-			}
-		})
-
-		if err := os.Remove(name); err != nil {
-			t.Fatalf("cannot remove %q: %v", name, err)
-		}
-	}
-}
-
-func e(
-	id, parent int,
-	root, target, vfsOptstr string,
-	fsType, source, fsOptstr string,
-) *mountinfo.Entry {
-	return &mountinfo.Entry{
-		ID:        id,
-		Parent:    parent,
-		Root:      root,
-		Target:    target,
-		VfsOptstr: vfsOptstr,
-		FsType:    fsType,
-		Source:    source,
-		FsOptstr:  fsOptstr,
-	}
-}
diff --git a/test/internal/testsuite/fs.go b/test/internal/testsuite/fs.go
deleted file mode 100644
index 9acd24b6..00000000
--- a/test/internal/testsuite/fs.go
+++ /dev/null
@@ -1,129 +0,0 @@
-package testsuite
-
-import (
-	"errors"
-	"fmt"
-	"io/fs"
-	"path/filepath"
-	"strings"
-)
-
-var (
-	// ErrFSBadLength is returned by [FS.Compare] for a directory with an
-	// unexpected amount of dents.
-	ErrFSBadLength = errors.New("bad dir length")
-	// ErrFSBadData is returned by [FS.Compare] for a file with unexpected
-	// contents.
-	ErrFSBadData = errors.New("data differs")
-	// ErrFSBadMode is returned by [FS.Compare] for an entry with unexpected
-	// mode.
-	ErrFSBadMode = errors.New("mode differs")
-	// ErrFSInvalidEnt is returned by [FS.Compare] if an invalid [FS] is visited.
-	ErrFSInvalidEnt = errors.New("invalid entry condition")
-)
-
-// FS represents part of a filesystem hierarchy.
-type FS struct {
-	// Expected mode of corresponding entry.
-	Mode fs.FileMode `json:"mode"`
-	// Expected directory contents. The directory is not descended if Dir is nil.
-	Dir map[string]*FS `json:"dir"`
-	// Expected file contents. The file is not read if Data is nil.
-	Data *string `json:"data"`
-}
-
-// dprintf calls printf if it is non-nil.
-func dprintf(printf func(format string, a ...any), format string, a ...any) {
-	if printf == nil {
-		return
-	}
-	printf(format, a...)
-}
-
-// printDir prints a failed [FS.Compare] directory.
-func printDir(
-	printf func(format string, a ...any),
-	prefix string,
-	dir []fs.DirEntry,
-) {
-	names := make([]string, len(dir))
-	for i, ent := range dir {
-		name := ent.Name()
-		if ent.IsDir() {
-			name += "/"
-		}
-		names[i] = fmt.Sprintf("%q", name)
-	}
-	dprintf(printf, "[FAIL] d %s: %s", prefix, strings.Join(names, " "))
-}
-
-// Compare compares the contents of prefix against the hierarchy described by s.
-func (s *FS) Compare(
-	printf func(format string, a ...any),
-	prefix string,
-	e fs.FS,
-) error {
-	if s.Data != nil {
-		if s.Dir != nil {
-			panic("invalid state")
-		}
-		panic("invalid compare call")
-	}
-
-	if s.Dir == nil {
-		dprintf(printf, "[ OK ] s %s", prefix)
-		return nil
-	}
-
-	var dir []fs.DirEntry
-	if d, err := fs.ReadDir(e, prefix); err != nil {
-		return err
-	} else if len(d) != len(s.Dir) {
-		printDir(printf, prefix, d)
-		return ErrFSBadLength
-	} else {
-		dir = d
-	}
-
-	for _, got := range dir {
-		name := got.Name()
-
-		if want, ok := s.Dir[name]; !ok {
-			printDir(printf, prefix, dir)
-			return fs.ErrNotExist
-		} else if want.Dir != nil && !got.IsDir() {
-			printDir(printf, prefix, dir)
-			return ErrFSInvalidEnt
-		} else {
-			name = filepath.Join(prefix, name)
-
-			if fi, err := got.Info(); err != nil {
-				return err
-			} else if fi.Mode() != want.Mode {
-				dprintf(printf, "[FAIL] m %s: %#o, want %#o",
-					name, uint32(fi.Mode()), uint32(want.Mode))
-				return ErrFSBadMode
-			}
-
-			if want.Data != nil {
-				if want.Dir != nil {
-					panic("invalid state")
-				}
-				if v, err := fs.ReadFile(e, name); err != nil {
-					return err
-				} else if string(v) != *want.Data {
-					dprintf(printf,
-						"[FAIL] f %s\n\t got: %s\n\twant: %s",
-						name, v, *want.Data,
-					)
-					return ErrFSBadData
-				}
-				dprintf(printf, "[ OK ] f %s", name)
-			} else if err := want.Compare(printf, name, e); err != nil {
-				return err
-			}
-		}
-	}
-	dprintf(printf, "[ OK ] d %s", prefix)
-	return nil
-}
diff --git a/test/internal/testsuite/fs_test.go b/test/internal/testsuite/fs_test.go
deleted file mode 100644
index 5c93bb46..00000000
--- a/test/internal/testsuite/fs_test.go
+++ /dev/null
@@ -1,85 +0,0 @@
-package testsuite_test
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io/fs"
-	"testing"
-	"testing/fstest"
-
-	"hakurei.app/test/internal/testsuite"
-)
-
-func TestCompare(t *testing.T) {
-	var (
-		fsPasswdSample = "u0_a20:x:65534:65534:Hakurei:/var/lib/persist/module/hakurei/u0/a20:/run/current-system/sw/bin/zsh"
-		fsGroupSample  = "hakurei:x:65534:"
-	)
-
-	testCases := []struct {
-		name string
-
-		sample  fstest.MapFS
-		want    *testsuite.FS
-		wantOut string
-		wantErr error
-	}{
-		{"skip", fstest.MapFS{}, &testsuite.FS{}, "[ OK ] s .\x00", nil},
-		{"simple pass", fstest.MapFS{".hakurei": {Mode: 0x800001ed}},
-			&testsuite.FS{Dir: map[string]*testsuite.FS{".hakurei": {Mode: 0x800001ed}}},
-			"[ OK ] s .hakurei\x00[ OK ] d .\x00", nil},
-		{"bad length", fstest.MapFS{".hakurei": {Mode: 0x800001ed}},
-			&testsuite.FS{Dir: make(map[string]*testsuite.FS)},
-			"[FAIL] d .: \".hakurei/\"\x00", testsuite.ErrFSBadLength},
-		{"top level bad mode", fstest.MapFS{".hakurei": {Mode: 0x800001ed}},
-			&testsuite.FS{Dir: map[string]*testsuite.FS{".hakurei": {Mode: 0xdeadbeef}}},
-			"[FAIL] m .hakurei: 020000000755, want 033653337357\x00", testsuite.ErrFSBadMode},
-		{"invalid entry condition", fstest.MapFS{"test": {Data: []byte{'0'}, Mode: 0644}},
-			&testsuite.FS{Dir: map[string]*testsuite.FS{"test": {Dir: make(map[string]*testsuite.FS)}}},
-			"[FAIL] d .: \"test\"\x00", testsuite.ErrFSInvalidEnt},
-		{"nonexistent", fstest.MapFS{"test": {Data: []byte{'0'}, Mode: 0644}},
-			&testsuite.FS{Dir: map[string]*testsuite.FS{".test": {}}},
-			"[FAIL] d .: \"test\"\x00", fs.ErrNotExist},
-		{"file", fstest.MapFS{"etc": {Mode: 0x800001c0},
-			"etc/passwd": {Data: []byte(fsPasswdSample), Mode: 0644},
-			"etc/group":  {Data: []byte(fsGroupSample), Mode: 0644},
-		}, &testsuite.FS{Dir: map[string]*testsuite.FS{"etc": {Mode: 0x800001c0, Dir: map[string]*testsuite.FS{
-			"passwd": {Mode: 0x1a4, Data: &fsPasswdSample},
-			"group":  {Mode: 0x1a4, Data: &fsGroupSample},
-		}}}}, "[ OK ] f etc/group\x00[ OK ] f etc/passwd\x00[ OK ] d etc\x00[ OK ] d .\x00", nil},
-		{"file differ", fstest.MapFS{"etc": {Mode: 0x800001c0},
-			"etc/passwd": {Data: []byte(fsPasswdSample), Mode: 0644},
-			"etc/group":  {Data: []byte(fsGroupSample), Mode: 0644},
-		}, &testsuite.FS{Dir: map[string]*testsuite.FS{"etc": {Mode: 0x800001c0, Dir: map[string]*testsuite.FS{
-			"passwd": {Mode: 0x1a4, Data: &fsGroupSample},
-			"group":  {Mode: 0x1a4, Data: &fsGroupSample},
-		}}}}, "[ OK ] f etc/group\x00[FAIL] f etc/passwd\n\t got: u0_a20:x:65534:65534:Hakurei:/var/lib/persist/module/hakurei/u0/a20:/run/current-system/sw/bin/zsh\n\twant: hakurei:x:65534:\x00", testsuite.ErrFSBadData},
-	}
-
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			var buf bytes.Buffer
-
-			err := tc.want.Compare(
-				func(format string, a ...any) {
-					_, _ = fmt.Fprintf(&buf, format+"\x00", a...)
-				},
-				".", tc.sample,
-			)
-			if !errors.Is(err, tc.wantErr) {
-				t.Errorf(
-					"Compare: error = %v; wantErr %v",
-					err, tc.wantErr,
-				)
-			}
-
-			if buf.String() != tc.wantOut {
-				t.Errorf(
-					"Compare: output %q; want %q",
-					&buf, tc.wantOut,
-				)
-			}
-		})
-	}
-}
diff --git a/test/internal/testsuite/proc.go b/test/internal/testsuite/proc.go
deleted file mode 100644
index e7ef1aed..00000000
--- a/test/internal/testsuite/proc.go
+++ /dev/null
@@ -1,353 +0,0 @@
-package testsuite
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"syscall"
-	"unsafe"
-
-	"hakurei.app/fhs"
-)
-
-// Stat represents status information read from /proc/pid/stat.
-type Stat struct {
-	// The process ID.
-	PID int
-	// The filename of the executable, with parenthesis stripped.
-	Comm string
-	// One of the following characters, indicating process state:
-	//
-	//	R      Running
-	//
-	//	S      Sleeping in an interruptible wait
-	//
-	//	D      Waiting in uninterruptible disk sleep
-	//
-	//	Z      Zombie
-	//
-	//	T      Stopped (on a signal) or (before Linux
-	//	       2.6.33) trace stopped
-	//
-	//	t      Tracing stop (Linux 2.6.33 onward)
-	//
-	//	W      Paging (only before Linux 2.6.0)
-	//
-	//	X      Dead (from Linux 2.6.0 onward)
-	//
-	//	x      Dead (Linux 2.6.33 to 3.13 only)
-	//
-	//	K      Wakekill (Linux 2.6.33 to 3.13 only)
-	//
-	//	W      Waking (Linux 2.6.33 to 3.13 only)
-	//
-	//	P      Parked (Linux 3.9 to 3.13 only)
-	//
-	//	I      Idle (Linux 4.14 onward)
-	State byte
-	// The process ID of the parent of this process.
-	PPID int
-	// The process group ID of the process.
-	PGRP int
-	// The session ID of the process.
-	Session int
-	// The controlling terminal of the process.
-	TTYNR int
-	// The ID of the foreground process group of the controlling terminal of the
-	// process.
-	TPGID int
-	// The kernel flags word of the process. For bit meanings, see the PF_*
-	// defines in the Linux kernel source file include/linux/sched.h.
-	Flags uint
-	// The number of minor faults the process has made which have not required
-	// loading a memory page from disk.
-	MinFlt uint
-	// The number of minor faults that the process's waited-for children have
-	// made.
-	CMinFlt uint
-	// The number of major faults the process has made which have required
-	// loading a memory page from disk.
-	MajFlt uint
-	// The number of major faults that the process's waited-for children have
-	// made.
-	CMajFlt uint
-	// Amount of time that this process has been scheduled in user mode,
-	// measured in clock ticks.
-	UTime uint
-	// Amount of time that this process has been scheduled in kernel mode,
-	// measured in clock ticks.
-	STime uint
-	// Amount of time that this process's waited-for children have been
-	// scheduled in user mode, measured in clock ticks.
-	CUTime int
-	// Amount of time that this process's waited-for children have been
-	// scheduled in kernel mode, measured in clock ticks.
-	CSTime int
-	// For processes running a real-time scheduling policy, this is the negated
-	// scheduling priority, minus one.
-	Priority int
-	// The nice value, a value in the range 19 (low priority) to -20 (high
-	// priority).
-	Nice int
-	// Number of threads in this process.
-	NumThreads int
-
-	// unmaintained field: itrealvalue
-
-	// The time the process started after system boot. Since Linux 2.6, the
-	// value is expressed in clock ticks.
-	StartTime uint64
-	// Virtual memory size in bytes.
-	VSize uint
-	// Resident set size in pages.
-	RSS int
-	// Soft limit in bytes on the rss of the process.
-	RSSLim uint64
-	// The address above which program text can run.
-	StartCode uint64
-	// The address below which program text can run.
-	EndCode uint64
-	// The address of the start (i.e., bottom) of the stack.
-	StartStack uint64
-	// The current value of ESP (stack pointer), as found in the kernel stack
-	// page for the process.
-	KSTKESP uint64
-	// The current EIP (instruction pointer).
-	KSTKEIP uint64
-
-	// obsolete fields: signal, blocked, sigignore, sigcatch
-
-	// This is the "channel" in which the process is waiting. It is the address
-	// of a location in the kernel where the process is sleeping.
-	WChan uint64
-
-	// unmaintained fields: nswap, cnswap
-
-	// Signal to be sent to parent when we die.
-	ExitSignal int
-	// CPU number last executed on.
-	Processor int
-	// Real-time scheduling priority, a number in the range 1 to 99 for processes
-	// scheduled under a real-time policy, or 0, for non-real-time processes.
-	RTPriority uint
-	// Scheduling policy (see sched_setscheduler(2)). Decode using the SCHED_*
-	// constants in linux/sched.h.
-	Policy uint
-	// Aggregated block I/O delays, measured in clock ticks (centiseconds).
-	DelayAcctBlkIOTicks uint64
-	// Guest time of the process (time spent running a virtual CPU for a guest
-	// operating system), measured in clock ticks.
-	GuestTime int
-	// Guest time of the process's children, measured in clock ticks.
-	CGuestTime int
-}
-
-// Executable is like [os.Executable], but for the process referred to by s.
-func (s *Stat) Executable() (string, error) {
-	path, err := os.Readlink(filepath.Join(fhs.Proc, strconv.Itoa(s.PID), "exe"))
-
-	// When the executable has been deleted then Readlink returns a
-	// path appended with " (deleted)".
-	return strings.TrimSuffix(path, " (deleted)"), err
-}
-
-// Stat populates stat with the proc filesystem entry referred to by s.
-func (s *Stat) Stat(stat *syscall.Stat_t) (err error) {
-	err = syscall.Stat(filepath.Join(fhs.Proc, strconv.Itoa(s.PID)), stat)
-	if err != nil {
-		err = os.NewSyscallError("stat", err)
-	}
-	return
-}
-
-// Args reads arguments of the process referred to by s.
-func (s *Stat) Args() ([]string, error) {
-	p, err := os.ReadFile(filepath.Join(fhs.Proc, strconv.Itoa(s.PID), "cmdline"))
-	if err != nil {
-		return nil, err
-	}
-	a := bytes.Split(p, []byte{0})
-	if len(a) > 0 && len(a[len(a)-1]) == 0 {
-		a = a[:len(a)-1]
-	}
-
-	args := make([]string, len(a))
-	for i, arg := range a {
-		args[i] = unsafe.String(unsafe.SliceData(arg), len(arg))
-	}
-	return args, nil
-}
-
-// ErrBadDelimiters is returned by [Stat.UnmarshalText] if one or both bytes of
-// the comm delimiter pair were missing or misplaced.
-var ErrBadDelimiters = errors.New("missing comm delimiters")
-
-// UnmarshalText populates the structure pointed to by s from text.
-func (s *Stat) UnmarshalText(text []byte) (err error) {
-	var (
-		discard uint64
-		_uint64 = &discard
-		_int64  = (*int64)(unsafe.Pointer(&discard))
-
-		ld = bytes.Index(text, []byte("("))
-		rd = bytes.LastIndex(text, []byte(")"))
-	)
-
-	if ld <= 0 || rd < 0 {
-		return ErrBadDelimiters
-	}
-
-	if s.PID, err = strconv.Atoi(
-		unsafe.String(unsafe.SliceData(text), ld-1),
-	); err != nil {
-		return
-	}
-
-	s.Comm = string(text[ld+1 : rd])
-
-	var (
-		n int
-
-		state string
-	)
-	n, err = fmt.Fscan(
-		bytes.NewBuffer(text[rd+2:]),
-		&state,
-		&s.PPID,
-		&s.PGRP,
-		&s.Session,
-		&s.TTYNR,
-		&s.TPGID,
-		&s.Flags,
-		&s.MinFlt,
-		&s.CMinFlt,
-		&s.MajFlt,
-		&s.CMajFlt,
-		&s.UTime,
-		&s.STime,
-		&s.CUTime,
-		&s.CSTime,
-		&s.Priority,
-		&s.Nice,
-		&s.NumThreads,
-		_int64,
-		&s.StartTime,
-		&s.VSize,
-		&s.RSS,
-		&s.RSSLim,
-		&s.StartCode,
-		&s.EndCode,
-		&s.StartStack,
-		&s.KSTKESP,
-		&s.KSTKEIP,
-		_uint64,
-		_uint64,
-		_uint64,
-		_uint64,
-		&s.WChan,
-		_uint64,
-		_uint64,
-		&s.ExitSignal,
-		&s.Processor,
-		&s.RTPriority,
-		&s.Policy,
-		&s.DelayAcctBlkIOTicks,
-		&s.GuestTime,
-		&s.CGuestTime,
-	)
-	if err != nil {
-		err = fmt.Errorf("field %d: %w", n, err)
-	} else if len(state) != 1 {
-		err = fmt.Errorf("invalid state %q", state)
-	} else {
-		s.State = state[0]
-	}
-	return
-}
-
-// A StatScanner continuously scans the proc filesystem for process status
-// information in /proc/pid/stat.
-type StatScanner struct {
-	// Current entry.
-	stat Stat
-	// Cached top-level /proc entries.
-	dents []os.DirEntry
-	// Current progress through dents.
-	i int
-	// Whether the previous call to Scan had repopulated dents.
-	wrapped bool
-	// First stored error: a non-nil err disables the scanner.
-	err error
-}
-
-// IsNotExist returns whether an error is [os.ErrNotExist] or ESRCH.
-func IsNotExist(err error) bool {
-	return errors.Is(err, os.ErrNotExist) || errors.Is(err, syscall.ESRCH)
-}
-
-// Scan reads a process status information entry. It returns false if an
-// unrecoverable error is encountered, after which Scan no longer scans new
-// entries.
-func (s *StatScanner) Scan() bool {
-	if s.err != nil {
-		return false
-	}
-
-	if s.wrapped = s.i == len(s.dents); s.wrapped {
-		if s.dents, s.err = os.ReadDir(fhs.Proc); s.err != nil {
-			return false
-		}
-		s.i = 0
-		if len(s.dents) == 0 {
-			s.err = syscall.ENOTRECOVERABLE
-			return false
-		}
-	}
-
-	for s.i < len(s.dents) {
-		dent := s.dents[s.i]
-		s.i++
-		if !dent.IsDir() {
-			continue
-		}
-
-		pid, err := strconv.Atoi(dent.Name())
-		if err != nil {
-			continue
-		}
-
-		var p []byte
-		p, err = os.ReadFile(filepath.Join(fhs.Proc, dent.Name(), "stat"))
-		if err != nil {
-			if IsNotExist(err) {
-				continue
-			}
-			s.err = err
-			return false
-		}
-
-		s.err = s.stat.UnmarshalText(p)
-		if s.err == nil && pid != s.stat.PID {
-			s.err = fmt.Errorf(
-				"bad status information: dent=%d, stat=%d",
-				pid, s.stat.PID,
-			)
-		}
-		return s.err == nil
-	}
-	return s.Scan()
-}
-
-// Stat returns the address of the [Stat] structure populated by the last call
-// to Scan.
-func (s *StatScanner) Stat() *Stat { return &s.stat }
-
-// Err returns the stored error value.
-func (s *StatScanner) Err() error { return s.err }
-
-// Repopulated returns whether the last Scan call had re-read the proc filesystem.
-func (s *StatScanner) Repopulated() bool { return s.wrapped }
diff --git a/test/internal/testsuite/proc_test.go b/test/internal/testsuite/proc_test.go
deleted file mode 100644
index a8698e73..00000000
--- a/test/internal/testsuite/proc_test.go
+++ /dev/null
@@ -1,33 +0,0 @@
-package testsuite_test
-
-import (
-	"testing"
-
-	"hakurei.app/test/internal/testsuite"
-)
-
-func BenchmarkStatScanner(b *testing.B) {
-	var s testsuite.StatScanner
-
-	for b.Loop() {
-		if !s.Scan() {
-			b.Fatal(s.Err())
-		}
-	}
-}
-
-func BenchmarkStatScannerFull(b *testing.B) {
-	var s testsuite.StatScanner
-
-	for b.Loop() {
-		for s.Scan() {
-			if s.Repopulated() {
-				break
-			}
-		}
-
-		if err := s.Err(); err != nil {
-			b.Fatal(err)
-		}
-	}
-}
diff --git a/test/internal/testsuite/ptrace.go b/test/internal/testsuite/ptrace.go
deleted file mode 100644
index ccf0900c..00000000
--- a/test/internal/testsuite/ptrace.go
+++ /dev/null
@@ -1,144 +0,0 @@
-package testsuite
-
-import (
-	"crypto/sha512"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-const (
-	// _PTRACE_ATTACH attaches to the process specified in pid.
-	_PTRACE_ATTACH = 16
-	// _PTRACE_DETACH restarts the stopped tracee as for PTRACE_CONT, but first
-	// detaches from it.
-	_PTRACE_DETACH = 17
-
-	// _PTRACE_SECCOMP_GET_FILTER allows the tracer to dump the tracee's classic
-	// BPF filters.
-	_PTRACE_SECCOMP_GET_FILTER = 0x420c
-)
-
-// ptrace wraps the ptrace syscall.
-func ptrace(
-	op uintptr,
-	pid, addr int,
-	data unsafe.Pointer,
-) (r uintptr, errno syscall.Errno) {
-	r, _, errno = syscall.Syscall6(
-		syscall.SYS_PTRACE,
-		op,
-		uintptr(pid),
-		uintptr(addr),
-		uintptr(data),
-		0, 0,
-	)
-	return
-}
-
-// ptraceAttach attaches to the process referred to by pid.
-func ptraceAttach(pid int) error {
-	if _, errno := ptrace(_PTRACE_ATTACH, pid, 0, nil); errno != 0 {
-		return os.NewSyscallError("PTRACE_ATTACH", errno)
-	}
-
-	var status syscall.WaitStatus
-	for {
-		if _, err := syscall.Wait4(
-			pid,
-			&status,
-			syscall.WALL,
-			nil,
-		); err != nil {
-			if errors.Is(err, syscall.EINTR) {
-				continue
-			}
-			return os.NewSyscallError("wait4", err)
-		}
-		switch {
-		case status.Stopped():
-			return nil
-
-		case status.Continued():
-			continue
-
-		case status.Signaled():
-			return fmt.Errorf(
-				"tracee terminated by signal %s",
-				status.Signal(),
-			)
-
-		case status.Exited():
-			return fmt.Errorf(
-				"tracee terminated unexpectedly with code %d",
-				status.ExitStatus(),
-			)
-		}
-	}
-}
-
-// ptraceDetach detaches from the attached process referred to by pid.
-func ptraceDetach(pid int) error {
-	if _, errno := ptrace(_PTRACE_DETACH, pid, 0, nil); errno != 0 {
-		return os.NewSyscallError("PTRACE_DETACH", errno)
-	}
-	return nil
-}
-
-// getFilter dumps the specified tracee's cBPF filter at the specified index
-// and returns the resulting payload. T must be eight bytes long and must not
-// contain pointers.
-func getFilter(pid, index int) ([]syscall.SockFilter, error) {
-	var buf []syscall.SockFilter
-	if n, errno := ptrace(
-		_PTRACE_SECCOMP_GET_FILTER,
-		pid, index, nil,
-	); errno != 0 {
-		return nil, os.NewSyscallError("PTRACE_SECCOMP_GET_FILTER", errno)
-	} else {
-		buf = make([]syscall.SockFilter, n)
-	}
-	if _, errno := ptrace(
-		_PTRACE_SECCOMP_GET_FILTER,
-		pid, index, unsafe.Pointer(&buf[0]),
-	); errno != 0 {
-		return nil, os.NewSyscallError("PTRACE_SECCOMP_GET_FILTER", errno)
-	}
-	return buf, nil
-}
-
-// CheckFilter checks the process at pid to have its first filter's contents
-// match the specified sha512 checksum.
-func CheckFilter(pid, index int, sum [sha512.Size]byte) (err error) {
-	if err = ptraceAttach(pid); err != nil {
-		return
-	}
-	defer func() {
-		if detachErr := ptraceDetach(pid); err == nil {
-			err = detachErr
-		}
-	}()
-
-	var buf []syscall.SockFilter
-	h := sha512.New()
-	if buf, err = getFilter(pid, index); err != nil {
-		return
-	} else {
-		h.Write(unsafe.Slice(
-			(*byte)(unsafe.Pointer(&buf[0])),
-			uintptr(len(buf))*unsafe.Sizeof(buf[0]),
-		))
-	}
-
-	if got := h.Sum(nil); string(got) != string(sum[:]) {
-		return fmt.Errorf(
-			"bad filter\n\t got: %s\n\twant: %s",
-			base64.StdEncoding.EncodeToString(got),
-			base64.StdEncoding.EncodeToString(sum[:]),
-		)
-	}
-	return
-}
diff --git a/test/internal/testsuite/ptrace_test.go b/test/internal/testsuite/ptrace_test.go
deleted file mode 100644
index eaaed131..00000000
--- a/test/internal/testsuite/ptrace_test.go
+++ /dev/null
@@ -1,13 +0,0 @@
-package testsuite
-
-import (
-	"syscall"
-	"testing"
-	"unsafe"
-)
-
-func TestBlockSize(t *testing.T) {
-	if sz := unsafe.Sizeof(syscall.SockFilter{}); sz != 8 {
-		t.Fatalf("invalid filter block size %d", sz)
-	}
-}
diff --git a/test/internal/testsuite/testsuite.go b/test/internal/testsuite/testsuite.go
deleted file mode 100644
index 456c36b4..00000000
--- a/test/internal/testsuite/testsuite.go
+++ /dev/null
@@ -1,290 +0,0 @@
-// Package testsuite provides many quick-and-dirty integration testing utilities.
-//
-// Attempting to import this package outside testing causes the resulting
-// program to panic.
-package testsuite
-
-import (
-	"bufio"
-	"context"
-	"crypto/sha512"
-	"errors"
-	"log"
-	"os"
-	"os/exec"
-	"os/signal"
-	"sync"
-	"syscall"
-	"time"
-)
-
-// ReceiveSignals blocks until a termination signal arrives, and terminates.
-func ReceiveSignals() {
-	s := make(chan os.Signal, 3)
-	signal.Notify(s, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP)
-	log.Fatalf("terminating on signal %s", <-s)
-}
-
-// MustRun runs command and terminates the testsuite on error.
-func MustRun(cred *syscall.Credential, extraEnv []string, command ...string) {
-	cmd := exec.Command(command[0], command[1:]...)
-	cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig:  syscall.SIGKILL,
-		Credential: cred,
-	}
-	if len(extraEnv) != 0 {
-		cmd.Env = append(cmd.Environ(), extraEnv...)
-	}
-	if err := cmd.Run(); err != nil {
-		log.Fatal(err)
-	}
-}
-
-// ErrUnexpectedSuccess is returned for processes expected to exit with a
-// non-zero code, but failed to do so.
-var ErrUnexpectedSuccess = errors.New("process unexpectedly exited with code 0")
-
-// MustFail runs command and terminates the testsuite if the program fails to
-// start or exits with code 0.
-func MustFail(cred *syscall.Credential, extraEnv []string, command ...string) {
-	cmd := exec.Command(command[0], command[1:]...)
-	cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig:  syscall.SIGKILL,
-		Credential: cred,
-	}
-	if len(extraEnv) != 0 {
-		cmd.Env = append(cmd.Environ(), extraEnv...)
-	}
-	if err := cmd.Run(); err == nil {
-		log.Fatal(ErrUnexpectedSuccess)
-	} else if e, ok := errors.AsType[*exec.ExitError](err); !ok {
-		log.Fatal(err)
-	} else if !e.Exited() {
-		log.Fatal(e)
-	}
-}
-
-// MustStart starts cmd and returns a channel delivering its wait error.
-func MustStart(cmd *exec.Cmd) (done <-chan error) {
-	if err := cmd.Start(); err != nil {
-		log.Fatal(err)
-	}
-	d := make(chan error)
-	go func() { d <- cmd.Wait() }()
-	return d
-}
-
-// MustStartWith wraps [MustStart] and creates the [exec.Cmd] object internally.
-func MustStartWith(
-	ctx context.Context,
-	cred *syscall.Credential,
-	extraEnv []string,
-	files []*os.File,
-	command ...string,
-) (proc *os.Process, done <-chan error) {
-	cmd := exec.CommandContext(ctx, command[0], command[1:]...)
-	cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
-	cmd.ExtraFiles = files
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig:  syscall.SIGTERM,
-		Credential: cred,
-	}
-	if len(extraEnv) != 0 {
-		cmd.Env = append(cmd.Environ(), extraEnv...)
-	}
-	return cmd.Process, MustStart(cmd)
-}
-
-// MustCheckFilter is like [CheckFilter], but terminates the test suite if a
-// non-nil error is returned. Otherwise, the tracee is terminated after it
-// resumes.
-func MustCheckFilter(pid int, sum [sha512.Size]byte) {
-	// podman installs its own filter
-	if err := CheckFilter(pid, 1, sum); err != nil {
-		log.Fatal(err)
-	} else if err = syscall.Kill(pid, syscall.SIGTERM); err != nil {
-		log.Fatalf("cannot terminate tracee: %v", err)
-	}
-}
-
-// FilterTerminated returns a non-nil error if err is not an [exec.ExitError]
-// describing a process terminated by a syscall.SIGTERM signal.
-func FilterTerminated(err error) error {
-	if err == nil {
-		return ErrUnexpectedSuccess
-	}
-
-	e, ok := errors.AsType[*exec.ExitError](err)
-	if !ok {
-		return err
-	}
-
-	if e.ExitCode() == 0x80+int(syscall.SIGTERM) {
-		return nil
-	}
-	return e
-}
-
-// Poll repeatedly runs command until it succeeds.
-func Poll(
-	d time.Duration,
-	cred *syscall.Credential,
-	extraEnv []string,
-	command ...string,
-) {
-	for range time.NewTicker(d).C {
-		cmd := exec.Command(command[0], command[1:]...)
-		cmd.SysProcAttr = &syscall.SysProcAttr{
-			Pdeathsig:  syscall.SIGKILL,
-			Credential: cred,
-		}
-		if len(extraEnv) != 0 {
-			cmd.Env = append(cmd.Environ(), extraEnv...)
-		}
-		if err := cmd.Run(); err != nil {
-			if e, ok := errors.AsType[*exec.ExitError](err); ok && e.Exited() {
-				continue
-			}
-			log.Fatal(err)
-		}
-		break
-	}
-}
-
-const (
-	// XDGRuntimeDir is the hardcoded XDG runtime directory for the user
-	// described by [GetUser].
-	XDGRuntimeDir = "/var/run/user/1000"
-
-	// XDGRuntimeEnv is the environment variable string for XDG_RUNTIME_DIR.
-	XDGRuntimeEnv = "XDG_RUNTIME_DIR=" + XDGRuntimeDir
-)
-
-// MustStartSessionBus starts a session bus that is never explicitly terminated.
-// The test suite is terminated if the session bus daemon terminates.
-func MustStartSessionBus(cred *syscall.Credential) (dbusEnv string) {
-	r, w, err := os.Pipe()
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	// this is never explicitly terminated
-	_, done := MustStartWith(
-		context.Background(), cred, nil, []*os.File{w},
-		"dbus-daemon",
-		"--print-address=3",
-		"--address=unix:path="+XDGRuntimeDir+"/dbus",
-		"--session",
-		"--nofork",
-		"--nopidfile",
-	)
-
-	go func() {
-		if _err := <-done; _err != nil {
-			log.Fatal(_err)
-		}
-		log.Fatal("session bus terminated unexpectedly")
-	}()
-
-	dbusEnv, err = bufio.NewReader(r).ReadString('\n')
-	if err != nil {
-		log.Fatal(err)
-	}
-	dbusEnv = dbusEnv[:len(dbusEnv)-1]
-	log.Printf("dbus listening on %s", dbusEnv)
-	dbusEnv = "DBUS_SESSION_BUS_ADDRESS=" + dbusEnv
-
-	if err = r.Close(); err != nil {
-		log.Fatal(err)
-	}
-	return
-}
-
-const (
-	// SwayEnv is the environment variable string for the sway IPC socket.
-	SwayEnv = "SWAYSOCK=" + XDGRuntimeDir + "/sway"
-	// WaylandEnv is the environment variable string for the wayland display.
-	WaylandEnv = "WAYLAND_DISPLAY=wayland-1"
-)
-
-// MustStartSway starts the sway wayland display server which must be terminated
-// by calling [TerminateSway].
-func MustStartSway(
-	wg *sync.WaitGroup,
-	cred *syscall.Credential,
-	dbusEnv string,
-) {
-	wg.Go(func() {
-		// this is terminated via swaymsg
-		_, done := MustStartWith(
-			context.Background(), cred, []string{
-				"WLR_BACKENDS=headless",
-				XDGRuntimeEnv,
-				SwayEnv,
-				dbusEnv,
-			}, nil,
-			"sway",
-		)
-		if err := <-done; err != nil {
-			log.Fatal(err)
-		}
-	})
-
-	Poll(
-		50*time.Millisecond,
-		cred,
-		[]string{SwayEnv},
-		"swaymsg",
-	)
-	log.Printf("sway available via %s", SwayEnv)
-}
-
-// TerminateSway requests for the sway server to terminate via sway IPC.
-func TerminateSway(cred *syscall.Credential) {
-	MustFail(cred, []string{SwayEnv}, "swaymsg", "exit")
-}
-
-// MustStartPipeWire starts a PipeWire server that is never explicitly
-// terminated.  The test suite is terminated if the PipeWire server terminates.
-func MustStartPipeWire(cred *syscall.Credential, dbusEnv string) {
-	// this is never explicitly terminated
-	_, done := MustStartWith(
-		context.Background(), cred, []string{
-			XDGRuntimeEnv,
-			dbusEnv,
-		}, nil,
-		"pipewire",
-	)
-
-	go func() {
-		if _err := <-done; _err != nil {
-			log.Fatal(_err)
-		}
-		log.Fatal("pipewire terminated unexpectedly")
-	}()
-
-	Poll(50*time.Millisecond, cred, []string{
-		XDGRuntimeEnv,
-		dbusEnv,
-	},
-		"wpctl",
-		"status",
-	)
-
-	_, _done := MustStartWith(
-		context.Background(), cred, []string{
-			XDGRuntimeEnv,
-			dbusEnv,
-		}, nil,
-		"wireplumber",
-	)
-
-	go func() {
-		if _err := <-_done; _err != nil {
-			log.Fatal(_err)
-		}
-		log.Fatal("wireplumber terminated unexpectedly")
-	}()
-}
diff --git a/test/internal/testsuite/testsuite_guard.go b/test/internal/testsuite/testsuite_guard.go
deleted file mode 100644
index 0859d17f..00000000
--- a/test/internal/testsuite/testsuite_guard.go
+++ /dev/null
@@ -1,15 +0,0 @@
-//go:build !testsuite && !tester
-
-package testsuite
-
-import (
-	"os"
-	"testing"
-)
-
-func init() {
-	if !testing.Testing() {
-		println("package testsuite imported in non-testsuite program")
-		os.Exit(1)
-	}
-}
diff --git a/test/internal/testsuite/testsuite_root.go b/test/internal/testsuite/testsuite_root.go
deleted file mode 100644
index 11f503ef..00000000
--- a/test/internal/testsuite/testsuite_root.go
+++ /dev/null
@@ -1,17 +0,0 @@
-//go:build testsuite
-
-package testsuite
-
-import (
-	"log"
-	"os"
-)
-
-func init() {
-	if os.Geteuid() != 0 {
-		log.Fatal("this program must run as root")
-	}
-
-	log.SetFlags(0)
-	log.SetPrefix("testsuite: ")
-}