Add test for virISCSIGetSession

Parse iscsiadm output with and without the recently introduced
flashnode info. [1]

This should check that commits like 57e17a74 (fixing [2]) do
not break iscsiadm output parsing.

[1] https://github.com/mikechristie/open-iscsi/commit/181af9a
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1067173

tests/Makefile.am

@@ -141,6 +141,7 @@ test_programs = virshtest sockettest \
 	virendiantest \
 	virfiletest \
 	viridentitytest \
+	viriscsitest \
 	virkeycodetest \
 	virlockspacetest \
 	virlogtest \
@@ -643,6 +644,7 @@ storagevolxml2argvtest_SOURCES = \
     testutils.c testutils.h
 storagevolxml2argvtest_LDADD = \
 	../src/libvirt_driver_storage_impl.la $(LDADDS)
+
 else ! WITH_STORAGE
 EXTRA_DIST += storagevolxml2argvtest.c
 endif ! WITH_STORAGE
@@ -787,6 +789,10 @@ viridentitytest_DEPENDENCIES = libsecurityselinuxhelper.la \
 	../src/libvirt.la
 endif WITH_SELINUX
 
+viriscsitest_SOURCES = \
+	viriscsitest.c testutils.h testutils.c
+viriscsitest_LDADD = $(LDADDS)
+
 virkeycodetest_SOURCES = \
 	virkeycodetest.c testutils.h testutils.c
 virkeycodetest_LDADD = $(LDADDS)

tests/viriscsitest.c

+/*
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Author: Jan Tomko <jtomko@redhat.com>
+ */
+
+#include <config.h>
+
+#ifdef WIN32
+int
+main(void)
+{
+    return EXIT_AM_SKIP;
+}
+#else
+# define __VIR_COMMAND_PRIV_H_ALLOW__
+
+# include "testutils.h"
+# include "vircommandpriv.h"
+# include "viriscsi.h"
+
+# define VIR_FROM_THIS VIR_FROM_NONE
+
+static const char *iscsiadmSessionOutput =
+    "tcp: [1] 10.20.30.40:3260,1 iqn.2004-06.example:example1:iscsi.test\n"
+    "tcp: [2] 10.20.30.41:3260,1 iqn.2005-05.example:example1:iscsi.hello\n"
+    "tcp: [3] 10.20.30.42:3260,1 iqn.2006-04.example:example1:iscsi.world\n"
+    "tcp: [5] 10.20.30.43:3260,1 iqn.2007-04.example:example1:iscsi.foo\n"
+    "tcp: [6] 10.20.30.44:3260,1 iqn.2008-04.example:example1:iscsi.bar\n"
+    "tcp: [7] 10.20.30.45:3260,1 iqn.2009-04.example:example1:iscsi.seven\n";
+
+static const char *iscsiadmSessionOutputNonFlash =
+    "tcp: [1] 10.20.30.40:3260,1 iqn.2004-06.example:example1:iscsi.test (non-flash)\n"
+    "tcp: [2] 10.20.30.41:3260,1 iqn.2005-05.example:example1:iscsi.hello (non-flash)\n"
+    "tcp: [3] 10.20.30.42:3260,1 iqn.2006-04.example:example1:iscsi.world (non-flash)\n"
+    "tcp: [5] 10.20.30.43:3260,1 iqn.2007-04.example:example1:iscsi.foo (non-flash)\n"
+    "tcp: [6] 10.20.30.44:3260,1 iqn.2008-04.example:example1:iscsi.bar (non-flash)\n"
+    "tcp: [7] 10.20.30.45:3260,1 iqn.2009-04.example:example1:iscsi.seven (non-flash)\n";
+
+struct testSessionInfo {
+    const char *device_path;
+    int output_version;
+    const char *expected_session;
+};
+
+static void testIscsiadmCb(const char *const*args,
+                           const char *const*env ATTRIBUTE_UNUSED,
+                           const char *input ATTRIBUTE_UNUSED,
+                           char **output,
+                           char **error ATTRIBUTE_UNUSED,
+                           int *status,
+                           void *opaque)
+{
+    int *output_version = opaque;
+    if (args[0] && STREQ(args[0], ISCSIADM) &&
+        args[1] && STREQ(args[1], "--mode") &&
+        args[2] && STREQ(args[2], "session") &&
+        args[3] == NULL) {
+        if (*output_version == 1)
+            ignore_value(VIR_STRDUP(*output, iscsiadmSessionOutputNonFlash));
+        else
+            ignore_value(VIR_STRDUP(*output, iscsiadmSessionOutput));
+    } else {
+        *status = -1;
+    }
+}
+
+static int
+testISCSIGetSession(const void *data)
+{
+    const struct testSessionInfo *info = data;
+    int ver = info->output_version;
+    char *actual_session = NULL;
+    int ret = -1;
+
+    virCommandSetDryRun(NULL, testIscsiadmCb, &ver);
+
+    actual_session = virISCSIGetSession(info->device_path, true);
+
+    if (STRNEQ_NULLABLE(actual_session, info->expected_session)) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+                       "Expected session: '%s' got: '%s'",
+                       NULLSTR(info->expected_session),
+                       NULLSTR(actual_session));
+        goto cleanup;
+    }
+
+    ret = 0;
+
+cleanup:
+    virCommandSetDryRun(NULL, NULL, NULL);
+    VIR_FREE(actual_session);
+    return ret;
+}
+
+static int
+mymain(void)
+{
+    int rv = 0;
+
+# define DO_SESSION_TEST(name, session)                                     \
+    do {                                                                    \
+        struct testSessionInfo info = {name, 0, session};                   \
+        if (virtTestRun("ISCSI get session test" name,                      \
+                        testISCSIGetSession, &info) < 0)                    \
+            rv = -1;                                                        \
+        info.output_version = 1;                                            \
+        if (virtTestRun("ISCSI get (non-flash) session test" name,          \
+                        testISCSIGetSession, &info) < 0)                    \
+            rv = -1;                                                        \
+    } while (0)
+
+    DO_SESSION_TEST("iqn.2004-06.example:example1:iscsi.test", "1");
+    DO_SESSION_TEST("iqn.2009-04.example:example1:iscsi.seven", "7");
+    DO_SESSION_TEST("iqn.2009-04.example:example1:iscsi.eight", NULL);
+
+    if (rv < 0)
+        return EXIT_FAILURE;
+    return EXIT_SUCCESS;
+}
+
+VIRT_TEST_MAIN(mymain)
+#endif /* WIN32 */