support/testing: add runtime testing for read-only systemd

We add the 3 following combinations:

  - basic systemd, read-only, network w/ ifupdown
  - basic systemd, read-only, network w/ networkd
  - full systemd, read-only, network w/ networkd

The tests just verify what the /sbin/init binary is, and that we were
able to grab an IP address. More tests can be added later, for example
to check each systemd features (journal, tmpfiles...)

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
[Arnout: regenerate .gitlab-ci.yml]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

.gitlab-ci.yml

@@ -234,6 +234,9 @@ tests.init.test_busybox.TestInitSystemBusyboxRoNet: *runtime_test
 tests.init.test_busybox.TestInitSystemBusyboxRw: *runtime_test
 tests.init.test_busybox.TestInitSystemBusyboxRwNet: *runtime_test
 tests.init.test_none.TestInitSystemNone: *runtime_test
+tests.init.test_systemd.TestInitSystemSystemdRoFull: *runtime_test
+tests.init.test_systemd.TestInitSystemSystemdRoIfupdown: *runtime_test
+tests.init.test_systemd.TestInitSystemSystemdRoNetworkd: *runtime_test
 tests.init.test_systemd.TestInitSystemSystemdRwFull: *runtime_test
 tests.init.test_systemd.TestInitSystemSystemdRwIfupdown: *runtime_test
 tests.init.test_systemd.TestInitSystemSystemdRwNetworkd: *runtime_test

support/testing/tests/init/systemd-factory/var/foo/bar

@@ -0,0 +1 @@
+foobar

support/testing/tests/init/test_systemd.py

@@ -21,6 +21,28 @@ class InitSystemSystemdBase(InitSystemBase):
         super(InitSystemSystemdBase, self).checkInit("/lib/systemd/systemd")
 
 
+#-------------------------------------------------------------------------------
+class TestInitSystemSystemdRoNetworkd(InitSystemSystemdBase):
+    config = InitSystemSystemdBase.config + \
+        """
+        BR2_SYSTEM_DHCP="eth0"
+        # BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
+        BR2_ROOTFS_OVERLAY="{}"
+        BR2_TARGET_ROOTFS_SQUASHFS=y
+        """.format(infra.filepath("tests/init/systemd-factory"))
+
+    def test_run(self):
+        self.startEmulator("squashfs", "zImage", "vexpress-v2p-ca9")
+        self.checkInit()
+        self.checkNetwork("eth0")
+
+        # This one must be executed on the target, to check that
+        # the factory feature works as expected
+        out, exit_code = self.emulator.run("cat /var/foo/bar")
+        self.assertEqual(exit_code, 0)
+        self.assertEqual(out[0], "foobar")
+
+
 #-------------------------------------------------------------------------------
 class TestInitSystemSystemdRwNetworkd(InitSystemSystemdBase):
     config = InitSystemSystemdBase.config + \
@@ -35,6 +57,22 @@ class TestInitSystemSystemdRwNetworkd(InitSystemSystemdBase):
         self.checkNetwork("eth0")
 
 
+#-------------------------------------------------------------------------------
+class TestInitSystemSystemdRoIfupdown(InitSystemSystemdBase):
+    config = InitSystemSystemdBase.config + \
+        """
+        BR2_SYSTEM_DHCP="eth0"
+        # BR2_PACKAGE_SYSTEMD_NETWORKD is not set
+        # BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
+        BR2_TARGET_ROOTFS_SQUASHFS=y
+        """
+
+    def test_run(self):
+        self.startEmulator("squashfs", "zImage", "vexpress-v2p-ca9")
+        self.checkInit()
+        self.checkNetwork("eth0")
+
+
 #-------------------------------------------------------------------------------
 class TestInitSystemSystemdRwIfupdown(InitSystemSystemdBase):
     config = InitSystemSystemdBase.config + \
@@ -51,6 +89,38 @@ class TestInitSystemSystemdRwIfupdown(InitSystemSystemdBase):
         self.checkNetwork("eth0")
 
 
+#-------------------------------------------------------------------------------
+class TestInitSystemSystemdRoFull(InitSystemSystemdBase):
+    config = InitSystemSystemdBase.config + \
+        """
+        BR2_SYSTEM_DHCP="eth0"
+        # BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
+        BR2_PACKAGE_SYSTEMD_JOURNAL_GATEWAY=y
+        BR2_PACKAGE_SYSTEMD_BACKLIGHT=y
+        BR2_PACKAGE_SYSTEMD_BINFMT=y
+        BR2_PACKAGE_SYSTEMD_COREDUMP=y
+        BR2_PACKAGE_SYSTEMD_FIRSTBOOT=y
+        BR2_PACKAGE_SYSTEMD_HIBERNATE=y
+        BR2_PACKAGE_SYSTEMD_IMPORTD=y
+        BR2_PACKAGE_SYSTEMD_LOCALED=y
+        BR2_PACKAGE_SYSTEMD_LOGIND=y
+        BR2_PACKAGE_SYSTEMD_MACHINED=y
+        BR2_PACKAGE_SYSTEMD_POLKIT=y
+        BR2_PACKAGE_SYSTEMD_QUOTACHECK=y
+        BR2_PACKAGE_SYSTEMD_RANDOMSEED=y
+        BR2_PACKAGE_SYSTEMD_RFKILL=y
+        BR2_PACKAGE_SYSTEMD_SMACK_SUPPORT=y
+        BR2_PACKAGE_SYSTEMD_SYSUSERS=y
+        BR2_PACKAGE_SYSTEMD_VCONSOLE=y
+        BR2_TARGET_ROOTFS_SQUASHFS=y
+        """
+
+    def test_run(self):
+        self.startEmulator("squashfs", "zImage", "vexpress-v2p-ca9")
+        self.checkInit()
+        self.checkNetwork("eth0")
+
+
 #-------------------------------------------------------------------------------
 class TestInitSystemSystemdRwFull(InitSystemSystemdBase):
     config = InitSystemSystemdBase.config + \