support/testing: add test for syslog-ng

Check:
 - the daemon is started;
 - a message is collected;
 - the daemon does not issue a warning message on startup.

When the .conf file version does not match the package version a warning
message shows up on serial on every boot. This message is generated by
syslog-ng before it is running, so it is not logged to
/var/log/messages. So in order to test the message is generated, restart
the server. It makes the message appears on /var/log/messages (since the
server is already running) where its existence can be easily tested
using grep.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@datacom.ind.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

.gitlab-ci.yml

@@ -300,6 +300,7 @@ tests.package.test_python_cryptography.TestPythonPy2Cryptography: *runtime_test
 tests.package.test_python_cryptography.TestPythonPy3Cryptography: *runtime_test
 tests.package.test_rust.TestRust: *runtime_test
 tests.package.test_rust.TestRustBin: *runtime_test
+tests.package.test_syslog_ng.TestSyslogNg: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainBuildrootMusl: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainBuildrootuClibc: *runtime_test
 tests.toolchain.test_external.TestExternalToolchainCCache: *runtime_test

support/testing/tests/package/test_syslog_ng.py

@@ -0,0 +1,34 @@
+import os
+
+import infra.basetest
+
+
+class TestSyslogNg(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
+        BR2_PACKAGE_SYSLOG_NG=y
+        BR2_TARGET_ROOTFS_CPIO=y
+        BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv5", kernel="builtin", options=["-initrd", cpio_file])
+        self.emulator.login()
+
+        cmd = "grep syslog-ng /var/log/messages | grep starting"
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 0)
+
+        cmd = "logger my-message;"
+        cmd += "sleep 1;"
+        cmd += "grep my-message /var/log/messages"
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 0)
+
+        cmd = "syslog-ng-ctl reload;"
+        cmd += "sleep 1;"
+        cmd += "grep syslog-ng /var/log/messages | grep -i warning"
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 1)