[spice-server v2 7/7] test-vdagent: Make test case more useful

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This switches the test to using the GTest API, and add several tests
related to https://bugzilla.redhat.com/show_bug.cgi?id=1411194

The "multiple-vmc-devices" is based off code written by Frediano Ziglio.
---
 server/tests/Makefile.am    |  1 +
 server/tests/test-vdagent.c | 87 ++++++++++++++++++++++++++++++++++-----------
 2 files changed, 68 insertions(+), 20 deletions(-)

diff --git a/server/tests/Makefile.am b/server/tests/Makefile.am
index f696f9f..ee891c5 100644
--- a/server/tests/Makefile.am
+++ b/server/tests/Makefile.am
@@ -45,6 +45,7 @@ check_PROGRAMS =				\
 	test-loop				\
 	test-qxl-parsing			\
 	test-stat-file				\
+	test-vdagent				\
 	$(NULL)
 
 noinst_PROGRAMS =				\
diff --git a/server/tests/test-vdagent.c b/server/tests/test-vdagent.c
index e06229e..49c6a3b 100644
--- a/server/tests/test-vdagent.c
+++ b/server/tests/test-vdagent.c
@@ -37,14 +37,6 @@ int ping_ms = 100;
 #define MIN(a, b) ((a) > (b) ? (b) : (a))
 #endif
 
-static void pinger(SPICE_GNUC_UNUSED void *opaque)
-{
-    // show_channels is not thread safe - fails if disconnections / connections occur
-    //show_channels(server);
-
-    core->timer_start(ping_timer, ping_ms);
-}
-
 static int vmc_write(SPICE_GNUC_UNUSED SpiceCharDeviceInstance *sin,
                      SPICE_GNUC_UNUSED const uint8_t *buf,
                      int len)
@@ -62,6 +54,11 @@ static int vmc_read(SPICE_GNUC_UNUSED SpiceCharDeviceInstance *sin,
     static unsigned message_size;
     int ret;
 
+    if (pos == sizeof(message)) {
+        g_message("sent whole message");
+        pos++; /* Only print message once */
+        return 0;
+    }
     if (pos == 0) {
         VDIChunkHeader *hdr = (VDIChunkHeader *)message;
         VDAgentMessage *msg = (VDAgentMessage *)&hdr[1];
@@ -83,9 +80,6 @@ static int vmc_read(SPICE_GNUC_UNUSED SpiceCharDeviceInstance *sin,
     ret = MIN(message_size - pos, len);
     memcpy(buf, &message[pos], ret);
     pos += ret;
-    if (pos == message_size) {
-        pos = 0;
-    }
     //printf("vmc_read %d (ret %d)\n", len, ret);
     return ret;
 }
@@ -105,24 +99,77 @@ static SpiceCharDeviceInterface vmc_interface = {
     .read               = vmc_read,
 };
 
-SpiceCharDeviceInstance vmc_instance = {
+static SpiceCharDeviceInstance vmc_instance = {
     .subtype = "vdagent",
 };
 
-int main(void)
+static void test_multiple_vmc_devices(void)
 {
-    Test *test;
+    SpiceCharDeviceInstance vmc_instances[2] = {
+        { .subtype = "vdagent", },
+        { .subtype = "vdagent", }
+    };
+    int status;
 
-    core = basic_event_loop_init();
-    test = test_new(core);
+    SpiceCoreInterface *core = basic_event_loop_init();
+    Test *test = test_new(core);
 
+    g_test_expect_message(G_LOG_DOMAIN, G_LOG_LEVEL_WARNING,
+                          "*spice_server_char_device_add_interface: vdagent already attached");
+    g_test_expect_message(G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
+                          "*spice_server_remove_interface: assertion 'char_device->st != NULL'*");
+    vmc_instances[0].base.sif = &vmc_interface.base;
+    spice_server_add_interface(test->server, &vmc_instances[0].base);
+    vmc_instances[1].base.sif = &vmc_interface.base;
+    spice_server_add_interface(test->server, &vmc_instances[1].base);
+    status = spice_server_remove_interface(&vmc_instances[1].base);
+    g_assert_cmpint(status, ==, -1);
+    status = spice_server_remove_interface(&vmc_instances[0].base);
+    g_assert_cmpint(status, ==, 0);
+    g_test_assert_expected_messages();
+    test_destroy(test);
+    basic_event_loop_destroy();
+}
+
+static void test_duplicate_removal(void)
+{
+    SpiceCoreInterface *core = basic_event_loop_init();
+    Test *test = test_new(core);
+    int status;
+
+    g_test_expect_message(G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
+                          "*spice_server_remove_interface: assertion 'char_device->st != NULL'*");
+    vmc_instance.base.sif = &vmc_interface.base;
+    spice_server_add_interface(test->server, &vmc_instance.base);
+    status = spice_server_remove_interface(&vmc_instance.base);
+    g_assert_cmpint(status, ==, 0);
+    status = spice_server_remove_interface(&vmc_instance.base);
+    g_assert_cmpint(status, ==, -1);
+    g_test_assert_expected_messages();
+    test_destroy(test);
+    basic_event_loop_destroy();
+}
+
+static void test_agent_to_server(void)
+{
+    SpiceCoreInterface *core = basic_event_loop_init();
+    Test *test = test_new(core);
+
+    g_test_expect_message(G_LOG_DOMAIN, G_LOG_LEVEL_MESSAGE, "sent whole message");
     vmc_instance.base.sif = &vmc_interface.base;
     spice_server_add_interface(test->server, &vmc_instance.base);
+    g_test_assert_expected_messages();
+    test_destroy(test);
+    basic_event_loop_destroy();
+}
 
-    ping_timer = core->timer_add(pinger, NULL);
-    core->timer_start(ping_timer, ping_ms);
+int main(int argc, char *argv[])
+{
+    g_test_init(&argc, &argv, NULL);
 
-    basic_event_loop_mainloop();
+    g_test_add_func("/server/vdagent/agent-to-server", test_agent_to_server);
+    g_test_add_func("/server/vdagent/duplicate-removal", test_duplicate_removal);
+    g_test_add_func("/server/vdagent/multiple-vmc-devices", test_multiple_vmc_devices);
 
-    return 0;
+    return g_test_run();
 }
-- 
2.9.3

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