[mutter] tests/monitor-unit-tests: Sanity check some monitor info

[Marge Bot <marge-bot src gnome org>]

commit b883a31796b0a8a9398558f0735440d8b40823bd
Author: Jonas Ådahl <jadahl gmail com>
Date:   Tue Jan 26 16:07:07 2021 +0100

    tests/monitor-unit-tests: Sanity check some monitor info
    
    Check that some information about the monitor is the same as the main
    output they are derived from.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1689>

 src/backends/meta-output.h     |  1 +
 src/tests/monitor-test-utils.c | 15 +++++++++++++++
 2 files changed, 16 insertions(+)
---
diff --git a/src/backends/meta-output.h b/src/backends/meta-output.h
index 91ebe80bd4..bed1996626 100644
--- a/src/backends/meta-output.h
+++ b/src/backends/meta-output.h
@@ -164,6 +164,7 @@ int meta_output_get_backlight (MetaOutput *output);
 void meta_output_add_possible_clone (MetaOutput *output,
                                      MetaOutput *possible_clone);
 
+META_EXPORT_TEST
 const MetaOutputInfo * meta_output_get_info (MetaOutput *output);
 
 META_EXPORT_TEST
diff --git a/src/tests/monitor-test-utils.c b/src/tests/monitor-test-utils.c
index b9771ef1ac..705201810a 100644
--- a/src/tests/monitor-test-utils.c
+++ b/src/tests/monitor-test-utils.c
@@ -365,6 +365,8 @@ check_monitor_configuration (MonitorTestCaseExpect *expect)
   for (l = monitors, i = 0; l; l = l->next, i++)
     {
       MetaMonitor *monitor = l->data;
+      MetaOutput *main_output;
+      const MetaOutputInfo *main_output_info;
       GList *outputs;
       GList *l_output;
       int j;
@@ -400,6 +402,19 @@ check_monitor_configuration (MonitorTestCaseExpect *expect)
                        ==,
                        expect->monitors[i].height_mm);
 
+      main_output = meta_monitor_get_main_output (monitor);
+      main_output_info = meta_output_get_info (main_output);
+      g_assert_cmpstr (meta_monitor_get_connector (monitor), ==,
+                       main_output_info->name);
+      g_assert_cmpstr (meta_monitor_get_vendor (monitor), ==,
+                       main_output_info->vendor);
+      g_assert_cmpstr (meta_monitor_get_product (monitor), ==,
+                       main_output_info->product);
+      g_assert_cmpstr (meta_monitor_get_serial (monitor), ==,
+                       main_output_info->serial);
+      g_assert_cmpint (meta_monitor_get_connector_type (monitor), ==,
+                       main_output_info->connector_type);
+
       modes = meta_monitor_get_modes (monitor);
       g_assert_cmpint (g_list_length (modes),
                        ==,