lib: Add test for library usage

This test covers inclusion of public header files and basic usage
of the API such as vlog.

Signed-off-by: Thomas Graf <tgraf@noironetworks.com>
Acked-by: Ben Pfaff <blp@nicira.com>

tests/.gitignore

@@ -46,3 +46,4 @@
 /testsuite
 /testsuite.dir/
 /testsuite.log
+/test-lib

tests/automake.mk

@@ -24,6 +24,7 @@ TESTSUITE_AT = \
 	tests/bfd.at \
 	tests/cfm.at \
 	tests/lacp.at \
+	tests/lib.at \
 	tests/learn.at \
 	tests/vconn.at \
 	tests/file_name.at \
@@ -192,6 +193,11 @@ tests_test_ovsdb_SOURCES = \
 EXTRA_DIST += tests/uuidfilt.pl tests/ovsdb-monitor-sort.pl
 tests_test_ovsdb_LDADD = ovsdb/libovsdb.la lib/libopenvswitch.la
 
+noinst_PROGRAMS += tests/test-lib
+tests_test_lib_SOURCES = \
+	tests/test-lib.c
+tests_test_lib_LDADD = lib/libopenvswitch.la
+
 # idltest schema and IDL
 OVSIDL_BUILT += tests/idltest.c tests/idltest.h tests/idltest.ovsidl
 IDLTEST_IDL_FILES = tests/idltest.ovsschema tests/idltest.ann

tests/lib.at

@@ -0,0 +1,9 @@
+AT_BANNER([Library -- basic])
+
+AT_SETUP([successful linking])
+AT_KEYWORDS([libopenvswitch])
+AT_CAPTURE_FILE([log])
+AT_CHECK(
+  [test-lib], [0],
+  [], [ignore])
+AT_CLEANUP

tests/library.at

@@ -205,3 +205,7 @@ AT_SETUP([test bitmap functions])
 AT_CHECK([ovstest test-bitmap check], [0], [..
 ])
 AT_CLEANUP
+
+AT_SETUP([use of public headers])
+AT_CHECK([test-lib], [0], [])
+AT_CLEANUP

tests/test-lib.c

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2014 Cisco Systems, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <openvswitch/compiler.h>
+#include <openvswitch/thread.h>
+#include <openvswitch/types.h>
+#include <openvswitch/util.h>
+#include <openvswitch/vconn.h>
+#include <openvswitch/vlog.h>
+
+static void
+show_version(void)
+{
+    printf("%s - %s\n",
+           ovs_get_program_name(), ovs_get_program_version());
+    exit(EXIT_SUCCESS);
+}
+
+static void
+usage(void)
+{
+    printf("%s: Open vSwitch library test utility\n"
+           "usage: %s [OPTIONS] COMMAND [ARG...]\n\n",
+           ovs_get_program_name(), ovs_get_program_name());
+    vlog_usage();
+    exit(EXIT_SUCCESS);
+}
+
+static void
+parse_options(int argc, char *argv[])
+{
+    static const struct option long_options[] = {
+        {"help", no_argument, NULL, 'h'},
+        {"version", no_argument, NULL, 'V'},
+		{"verbose", optional_argument, NULL, 'v'},
+        {NULL, 0, NULL, 0},
+    };
+    char *short_options = "hVv";
+
+    for (;;) {
+        int c;
+
+        c = getopt_long(argc, argv, short_options, long_options, NULL);
+        if (c == -1) {
+            break;
+        }
+
+        switch (c) {
+        case 'V':
+            show_version();
+            break;
+
+        case 'h':
+            usage();
+            break;
+
+        case 'v':
+            vlog_set_verbosity(optarg);
+            break;
+
+        case '?':
+            exit(EXIT_FAILURE);
+
+        default:
+            abort();
+        }
+    }
+}
+
+int
+main(int argc, char *argv[])
+{
+    ovs_set_program_name(argv[0], "1.0");
+    parse_options(argc, argv);
+
+    return 0;
+}