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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
commitb750101eb236130cf056c675997decbac904cc49 (patch)
treea5df1a06754bdd014cb975c051c83b01c9a97532 /test/TEST-64-UDEV-STORAGE
parentInitial commit. (diff)
downloadsystemd-b750101eb236130cf056c675997decbac904cc49.tar.xz
systemd-b750101eb236130cf056c675997decbac904cc49.zip
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/TEST-64-UDEV-STORAGE')
l---------test/TEST-64-UDEV-STORAGE/Makefile1
-rw-r--r--test/TEST-64-UDEV-STORAGE/deny-list-ubuntu-ci0
-rwxr-xr-xtest/TEST-64-UDEV-STORAGE/test.sh547
3 files changed, 548 insertions, 0 deletions
diff --git a/test/TEST-64-UDEV-STORAGE/Makefile b/test/TEST-64-UDEV-STORAGE/Makefile
new file mode 120000
index 0000000..e9f93b1
--- /dev/null
+++ b/test/TEST-64-UDEV-STORAGE/Makefile
@@ -0,0 +1 @@
+../TEST-01-BASIC/Makefile \ No newline at end of file
diff --git a/test/TEST-64-UDEV-STORAGE/deny-list-ubuntu-ci b/test/TEST-64-UDEV-STORAGE/deny-list-ubuntu-ci
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/test/TEST-64-UDEV-STORAGE/deny-list-ubuntu-ci
diff --git a/test/TEST-64-UDEV-STORAGE/test.sh b/test/TEST-64-UDEV-STORAGE/test.sh
new file mode 100755
index 0000000..e329433
--- /dev/null
+++ b/test/TEST-64-UDEV-STORAGE/test.sh
@@ -0,0 +1,547 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# vi: ts=4 sw=4 tw=0 et:
+#
+# TODO:
+# * SW raid (mdadm)
+# * MD (mdadm) -> dm-crypt -> LVM
+# * iSCSI -> dm-crypt -> LVM
+set -e
+
+TEST_DESCRIPTION="systemd-udev storage tests"
+TEST_NO_NSPAWN=1
+# Save only journals of failing test cases by default (to conserve space)
+TEST_SAVE_JOURNAL="${TEST_SAVE_JOURNAL:-fail}"
+
+# shellcheck source=test/test-functions
+. "${TEST_BASE_DIR:?}/test-functions"
+
+USER_QEMU_OPTIONS="${QEMU_OPTIONS:-}"
+USER_KERNEL_APPEND="${KERNEL_APPEND:-}"
+
+_host_has_feature() {(
+ set -e
+
+ case "${1:?}" in
+ btrfs)
+ host_has_btrfs
+ ;;
+ iscsi)
+ # Client/initiator (Open-iSCSI)
+ command -v iscsiadm && command -v iscsid || return $?
+ # Server/target (TGT)
+ command -v tgtadm && command -v tgtd || return $?
+ ;;
+ lvm)
+ command -v lvm || return $?
+ ;;
+ mdadm)
+ host_has_mdadm
+ ;;
+ multipath)
+ command -v multipath && command -v multipathd || return $?
+ ;;
+ *)
+ echo >&2 "ERROR: Unknown feature '$1'"
+ # Make this a hard error to distinguish an invalid feature from
+ # a missing feature
+ exit 1
+ esac
+)}
+
+test_append_files() {(
+ local feature
+ # An associative array of requested (but optional) features and their
+ # respective "handlers" from test/test-functions
+ #
+ # Note: we install cryptsetup unconditionally, hence it's not explicitly
+ # checked for here
+ local -A features=(
+ [btrfs]=install_btrfs
+ [iscsi]=install_iscsi
+ [lvm]=install_lvm
+ [mdadm]=install_mdadm
+ [multipath]=install_multipath
+ )
+
+ instmods "=block" "=md" "=nvme" "=scsi"
+ install_dmevent
+ image_install lsblk swapoff swapon wc wipefs
+
+ # Install the optional features if the host has the respective tooling
+ for feature in "${!features[@]}"; do
+ if _host_has_feature "$feature"; then
+ "${features[$feature]}"
+ fi
+ done
+
+ generate_module_dependencies
+
+ for i in {0..127}; do
+ dd if=/dev/zero of="${TESTDIR:?}/disk$i.img" bs=1M count=1
+ echo "device$i" >"${TESTDIR:?}/disk$i.img"
+ done
+)}
+
+_image_cleanup() {
+ mount_initdir
+ # Clean up certain "problematic" files which may be left over by failing tests
+ : >"${initdir:?}/etc/fstab"
+ : >"${initdir:?}/etc/crypttab"
+}
+
+test_run_one() {
+ local test_id="${1:?}"
+
+ if run_qemu "$test_id"; then
+ check_result_qemu || { echo "qemu test failed"; return 1; }
+ fi
+
+ return 0
+}
+
+test_run() {
+ local test_id="${1:?}"
+ local passed=()
+ local failed=()
+ local skipped=()
+ local ec state
+
+ mount_initdir
+
+ if get_bool "${TEST_NO_QEMU:=}" || ! find_qemu_bin; then
+ dwarn "can't run qemu, skipping"
+ return 0
+ fi
+
+ # Execute each currently defined function starting with "testcase_"
+ for testcase in "${TESTCASES[@]}"; do
+ _image_cleanup
+ echo "------ $testcase: BEGIN ------"
+ # Note for my future frustrated self: `fun && xxx` (as well as ||, if, while,
+ # until, etc.) _DISABLES_ the `set -e` behavior in _ALL_ nested function
+ # calls made from `fun()`, i.e. the function _CONTINUES_ even when a called
+ # command returned non-zero EC. That may unexpectedly hide failing commands
+ # if not handled properly. See: bash(1) man page, `set -e` section.
+ #
+ # So, be careful when adding clean up snippets in the testcase_*() functions -
+ # if the `test_run_one()` function isn't the last command, you have propagate
+ # the exit code correctly (e.g. `test_run_one() || return $?`, see below).
+ ec=0
+ "$testcase" "$test_id" || ec=$?
+ case $ec in
+ 0)
+ passed+=("$testcase")
+ state="PASS"
+ ;;
+ 77)
+ skipped+=("$testcase")
+ state="SKIP"
+ ;;
+ *)
+ failed+=("$testcase")
+ state="FAIL"
+ esac
+ echo "------ $testcase: END ($state) ------"
+ done
+
+ echo "Passed tests: ${#passed[@]}"
+ printf " * %s\n" "${passed[@]}"
+ echo "Skipped tests: ${#skipped[@]}"
+ printf " * %s\n" "${skipped[@]}"
+ echo "Failed tests: ${#failed[@]}"
+ printf " * %s\n" "${failed[@]}"
+
+ [[ ${#failed[@]} -eq 0 ]] || return 1
+
+ return 0
+}
+
+testcase_megasas2_basic() {
+ if ! "${QEMU_BIN:?}" -device help | grep 'name "megasas-gen2"'; then
+ echo "megasas-gen2 device driver is not available, skipping test..."
+ return 77
+ fi
+
+ local i
+ local qemu_opts=(
+ "-device megasas-gen2,id=scsi0"
+ "-device megasas-gen2,id=scsi1"
+ "-device megasas-gen2,id=scsi2"
+ "-device megasas-gen2,id=scsi3"
+ )
+
+ for i in {0..127}; do
+ # Add 128 drives, 32 per bus
+ qemu_opts+=(
+ "-device scsi-hd,drive=drive$i,bus=scsi$((i / 32)).0,channel=0,scsi-id=$((i % 32)),lun=0"
+ "-drive format=raw,cache=unsafe,file=${TESTDIR:?}/disk$i.img,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}"
+}
+
+testcase_nvme_basic() {
+ if ! "${QEMU_BIN:?}" -device help | grep 'name "nvme"'; then
+ echo "nvme device driver is not available, skipping test..."
+ return 77
+ fi
+
+ local i
+ local qemu_opts=()
+
+ for i in {0..27}; do
+ qemu_opts+=(
+ "-device nvme,drive=nvme$i,serial=deadbeef$i,num_queues=8"
+ "-drive format=raw,cache=unsafe,file=${TESTDIR:?}/disk$i.img,if=none,id=nvme$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}"
+}
+
+# Testcase for:
+# * https://github.com/systemd/systemd/pull/24748
+# * https://github.com/systemd/systemd/pull/24766
+# * https://github.com/systemd/systemd/pull/24946
+# Docs: https://qemu.readthedocs.io/en/latest/system/devices/nvme.html#nvm-subsystems
+testcase_nvme_subsystem() {
+ if ! "${QEMU_BIN:?}" -device help | grep 'name "nvme-subsys"'; then
+ echo "nvme-subsystem device driver is not available, skipping test..."
+ return 77
+ fi
+
+ local i
+ local qemu_opts=(
+ # Create an NVM Subsystem Device
+ "-device nvme-subsys,id=nvme-subsys-64,nqn=subsys64"
+ # Attach two NVM controllers to it
+ "-device nvme,subsys=nvme-subsys-64,serial=deadbeef"
+ "-device nvme,subsys=nvme-subsys-64,serial=deadbeef"
+ # And create two shared namespaces attached to both controllers
+ "-device nvme-ns,drive=nvme0,nsid=16,shared=on"
+ "-drive format=raw,cache=unsafe,file=${TESTDIR:?}/disk0.img,if=none,id=nvme0"
+ "-device nvme-ns,drive=nvme1,nsid=17,shared=on"
+ "-drive format=raw,cache=unsafe,file=${TESTDIR:?}/disk1.img,if=none,id=nvme1"
+ )
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}"
+}
+
+# Test for issue https://github.com/systemd/systemd/issues/20212
+testcase_virtio_scsi_identically_named_partitions() {
+
+ if ! "${QEMU_BIN:?}" -device help | grep 'name "virtio-scsi-pci"'; then
+ echo "virtio-scsi-pci device driver is not available, skipping test..."
+ return 77
+ fi
+
+ # Create 16 disks, with 8 partitions per disk (all identically named)
+ # and attach them to a virtio-scsi controller
+ local qemu_opts=("-device virtio-scsi-pci,id=scsi0,num_queues=4")
+ local diskpath="${TESTDIR:?}/namedpart0.img"
+ local i lodev num_disk num_part qemu_timeout
+
+ if get_bool "${IS_BUILT_WITH_ASAN:=}" || ! get_bool "$QEMU_KVM"; then
+ num_disk=4
+ num_part=4
+ else
+ num_disk=16
+ num_part=8
+ fi
+
+ dd if=/dev/zero of="$diskpath" bs=1M count=18
+ lodev="$(losetup --show -f -P "$diskpath")"
+ sfdisk "${lodev:?}" <<EOF
+label: gpt
+
+$(for ((i = 1; i <= num_part; i++)); do echo 'name="Hello world", size=2M'; done)
+EOF
+ losetup -d "$lodev"
+
+ for ((i = 0; i < num_disk; i++)); do
+ diskpath="${TESTDIR:?}/namedpart$i.img"
+ if [[ $i -gt 0 ]]; then
+ cp -uv "${TESTDIR:?}/namedpart0.img" "$diskpath"
+ fi
+
+ qemu_opts+=(
+ "-device scsi-hd,drive=drive$i,bus=scsi0.0,channel=0,scsi-id=0,lun=$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ # Bump the timeout when collecting test coverage, since the test is a bit
+ # slower in that case
+ if get_bool "${IS_BUILT_WITH_ASAN:=}" || ! get_bool "$QEMU_KVM"; then
+ qemu_timeout=240
+ elif is_built_with_coverage; then
+ qemu_timeout=120
+ else
+ qemu_timeout=60
+ fi
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ # Limit the number of VCPUs and set a timeout to make sure we trigger the issue
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ QEMU_SMP=1 QEMU_TIMEOUT=$qemu_timeout test_run_one "${1:?}" || return $?
+
+ rm -f "${TESTDIR:?}"/namedpart*.img
+}
+
+testcase_multipath_basic_failover() {
+ if ! _host_has_feature "multipath"; then
+ echo "Missing multipath tools, skipping the test..."
+ return 77
+ fi
+
+ local qemu_opts=("-device virtio-scsi-pci,id=scsi")
+ local partdisk="${TESTDIR:?}/multipathpartitioned.img"
+ local image lodev nback ndisk wwn
+
+ dd if=/dev/zero of="$partdisk" bs=1M count=16
+ lodev="$(losetup --show -f -P "$partdisk")"
+ sfdisk "${lodev:?}" <<EOF
+label: gpt
+
+name="first_partition", size=5M
+uuid="deadbeef-dead-dead-beef-000000000000", name="failover_part", size=5M
+EOF
+ udevadm settle
+ mkfs.ext4 -U "deadbeef-dead-dead-beef-111111111111" -L "failover_vol" "${lodev}p2"
+ losetup -d "$lodev"
+
+ # Add 16 multipath devices, each backed by 4 paths
+ for ndisk in {0..15}; do
+ wwn="0xDEADDEADBEEF$(printf "%.4d" "$ndisk")"
+ # Use a partitioned disk for the first device to test failover
+ [[ $ndisk -eq 0 ]] && image="$partdisk" || image="${TESTDIR:?}/disk$ndisk.img"
+
+ for nback in {0..3}; do
+ qemu_opts+=(
+ "-device scsi-hd,drive=drive${ndisk}x${nback},serial=MPIO$ndisk,wwn=$wwn"
+ "-drive format=raw,cache=unsafe,file=$image,file.locking=off,if=none,id=drive${ndisk}x${nback}"
+ )
+ done
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "$partdisk"
+}
+
+# Test case for issue https://github.com/systemd/systemd/issues/19946
+testcase_simultaneous_events() {
+ local qemu_opts=("-device virtio-scsi-pci,id=scsi")
+ local diskpath i
+
+ for i in {0..9}; do
+ diskpath="${TESTDIR:?}/simultaneousevents${i}.img"
+
+ dd if=/dev/zero of="$diskpath" bs=1M count=32
+ qemu_opts+=(
+ "-device scsi-hd,drive=drive$i,serial=deadbeeftest$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "$diskpath"
+}
+
+testcase_lvm_basic() {
+ if ! _host_has_feature "lvm"; then
+ echo "Missing lvm tools, skipping the test..."
+ return 77
+ fi
+
+ local qemu_opts=("-device ahci,id=ahci0")
+ local diskpath i
+
+ # Attach 4 SATA disks to the VM (and set their model and serial fields
+ # to something predictable, so we can refer to them later)
+ for i in {0..3}; do
+ diskpath="${TESTDIR:?}/lvmbasic${i}.img"
+ dd if=/dev/zero of="$diskpath" bs=1M count=32
+ qemu_opts+=(
+ "-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeeflvm$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "${TESTDIR:?}"/lvmbasic*.img
+}
+
+testcase_btrfs_basic() {
+ if ! _host_has_feature "btrfs"; then
+ echo "Missing btrfs tools/modules, skipping the test..."
+ return 77
+ fi
+
+ local qemu_opts=("-device ahci,id=ahci0")
+ local diskpath i size
+
+ for i in {0..3}; do
+ diskpath="${TESTDIR:?}/btrfsbasic${i}.img"
+ # Make the first disk larger for multi-partition tests
+ [[ $i -eq 0 ]] && size=350 || size=128
+
+ dd if=/dev/zero of="$diskpath" bs=1M count="$size"
+ qemu_opts+=(
+ "-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeefbtrfs$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "${TESTDIR:?}"/btrfsbasic*.img
+}
+
+testcase_iscsi_lvm() {
+ if ! _host_has_feature "iscsi" || ! _host_has_feature "lvm"; then
+ echo "Missing iSCSI client/server tools (Open-iSCSI/TGT) or LVM utilities, skipping the test..."
+ return 77
+ fi
+
+ local qemu_opts=("-device ahci,id=ahci0")
+ local diskpath i size
+
+ for i in {0..3}; do
+ diskpath="${TESTDIR:?}/iscsibasic${i}.img"
+ # Make the first disk larger for multi-partition tests
+ [[ $i -eq 0 ]] && size=150 || size=64
+ # Make the first disk larger for multi-partition tests
+
+ dd if=/dev/zero of="$diskpath" bs=1M count="$size"
+ qemu_opts+=(
+ "-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeefiscsi$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "${TESTDIR:?}"/iscsibasic*.img
+}
+
+testcase_long_sysfs_path() {
+ local brid
+ local testdisk="${TESTDIR:?}/longsysfspath.img"
+ local qemu_opts=(
+ "-drive if=none,id=drive0,format=raw,cache=unsafe,file=$testdisk"
+ "-device pci-bridge,id=pci_bridge0,chassis_nr=64"
+ )
+
+ dd if=/dev/zero of="$testdisk" bs=1M count=64
+ lodev="$(losetup --show -f -P "$testdisk")"
+ sfdisk "${lodev:?}" <<EOF
+label: gpt
+
+name="test_swap", size=32M
+uuid="deadbeef-dead-dead-beef-000000000000", name="test_part", size=5M
+EOF
+ udevadm settle
+ mkswap -U "deadbeef-dead-dead-beef-111111111111" -L "swap_vol" "${lodev}p1"
+ mkfs.ext4 -U "deadbeef-dead-dead-beef-222222222222" -L "data_vol" "${lodev}p2"
+ losetup -d "$lodev"
+
+ # Create 25 additional PCI bridges, each one connected to the previous one
+ # (basically a really long extension cable), and attach a virtio drive to
+ # the last one. This should force udev into attempting to create a device
+ # unit with a _really_ long name.
+ for brid in {1..25}; do
+ qemu_opts+=("-device pci-bridge,id=pci_bridge$brid,bus=pci_bridge$((brid-1)),chassis_nr=$((64+brid))")
+ done
+
+ qemu_opts+=("-device virtio-blk-pci,drive=drive0,scsi=off,bus=pci_bridge$brid")
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "${testdisk:?}"
+}
+
+testcase_mdadm_basic() {
+ if ! _host_has_feature "mdadm"; then
+ echo "Missing mdadm tools/modules, skipping the test..."
+ return 77
+ fi
+
+ local qemu_opts=("-device ahci,id=ahci0")
+ local diskpath i size
+
+ for i in {0..4}; do
+ diskpath="${TESTDIR:?}/mdadmbasic${i}.img"
+
+ dd if=/dev/zero of="$diskpath" bs=1M count=64
+ qemu_opts+=(
+ "-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeefmdadm$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "${TESTDIR:?}"/mdadmbasic*.img
+}
+
+testcase_mdadm_lvm() {
+ if ! _host_has_feature "mdadm" || ! _host_has_feature "lvm"; then
+ echo "Missing mdadm tools/modules or LVM tools, skipping the test..."
+ return 77
+ fi
+
+ local qemu_opts=("-device ahci,id=ahci0")
+ local diskpath i size
+
+ for i in {0..4}; do
+ diskpath="${TESTDIR:?}/mdadmlvm${i}.img"
+
+ dd if=/dev/zero of="$diskpath" bs=1M count=64
+ qemu_opts+=(
+ "-device ide-hd,bus=ahci0.$i,drive=drive$i,model=foobar,serial=deadbeefmdadmlvm$i"
+ "-drive format=raw,cache=unsafe,file=$diskpath,if=none,id=drive$i"
+ )
+ done
+
+ KERNEL_APPEND="systemd.setenv=TEST_FUNCTION_NAME=${FUNCNAME[0]} ${USER_KERNEL_APPEND:-}"
+ QEMU_OPTIONS="${qemu_opts[*]} ${USER_QEMU_OPTIONS:-}"
+ test_run_one "${1:?}" || return $?
+
+ rm -f "${TESTDIR:?}"/mdadmlvm*.img
+}
+# Allow overriding which tests should be run from the "outside", useful for manual
+# testing (make -C test/... TESTCASES="testcase1 testcase2")
+if [[ -v "TESTCASES" && -n "$TESTCASES" ]]; then
+ read -ra TESTCASES <<< "$TESTCASES"
+else
+ # This must run after all functions were defined, otherwise `declare -F` won't
+ # see them
+ mapfile -t TESTCASES < <(declare -F | awk '$3 ~ /^testcase_/ {print $3;}')
+fi
+
+do_test "$@"