[i-g-t] tests/kms_feature_discovery: Add basic sanity test

[Bhanuprakash Modem <bhanuprakash.modem@intel.com>]

Add basic sanity test to make sure DRM_IOCTL_MODE_GETRESOURCES is
working fine.

Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
---
 tests/kms_feature_discovery.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tests/kms_feature_discovery.c b/tests/kms_feature_discovery.c
index 5bca9ad76..eb762928f 100644
--- a/tests/kms_feature_discovery.c
+++ b/tests/kms_feature_discovery.c
@@ -44,6 +44,9 @@
 #include "igt_types.h"
 
 /**
+ * SUBTEST: basic-rte
+ * Description: Basic sanity test to make sure DRM_IOCTL_MODE_GETRESOURCES is working fine.
+ *
  * SUBTEST: display
  * Description: Make sure that we have display support.
  *
@@ -87,6 +90,17 @@ igt_main {
 		debugfs_fd = igt_debugfs_dir(fd);
 	}
 
+	igt_describe("Basic sanity test to make sure DRM_IOCTL_MODE_GETRESOURCES is working fine.");
+	igt_subtest("basic-rte") {
+		drmModeResPtr resources = drmModeGetResources(fd);
+
+		/* Operation not supported on non-display platforms. */
+		if (!resources)
+			igt_assert_eq(errno, EOPNOTSUPP);
+
+		drmModeFreeResources(resources);
+	}
+
 	igt_subtest_group {
 		igt_fixture {
 			igt_display_require(&display, fd);
-- 
2.40.0