egl: Add sanity test for EGL_EXT_device_enumeration (v3.1)

v2:
- Cover more error paths (Eric Anholt)

v3:
- Use piglit_check_egl_error and PFN* typedefs (Emil Velikov)
- Don't initialize a display, just query; future tests will inspect
  particular device and platform types (Mathias Frölich)

v3.1:
- Warn if there's an implausible number of devices (Eric and Mathias)

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Mathias Fröhlich <Mathias.Froehlich@web.de>
Signed-off-by: Adam Jackson <ajax@redhat.com>

4 files changed, 114 insertions, 0 deletions

diff --git a/tests/egl/spec/CMakeLists.txt b/tests/egl/spec/CMakeLists.txt
index 0868cc0f0..7206556fa 100644
--- a/tests/egl/spec/CMakeLists.txt
+++ b/tests/egl/spec/CMakeLists.txt
@@ -1,6 +1,7 @@
 add_subdirectory (egl-1.4)
 add_subdirectory (egl_ext_client_extensions)
 add_subdirectory (egl_ext_device_query)
+add_subdirectory (egl_ext_device_enumeration)
 add_subdirectory (egl_khr_create_context)
 add_subdirectory (egl_khr_get_all_proc_addresses)
 add_subdirectory (egl_khr_fence_sync)
diff --git a/tests/egl/spec/egl_ext_device_enumeration/CMakeLists.no_api.txt b/tests/egl/spec/egl_ext_device_enumeration/CMakeLists.no_api.txt
new file mode 100644
index 000000000..381f08062
--- /dev/null
+++ b/tests/egl/spec/egl_ext_device_enumeration/CMakeLists.no_api.txt
@@ -0,0 +1,7 @@
+link_libraries(
+	piglitutil
+)
+
+piglit_add_executable(egl_ext_device_enumeration egl_ext_device_enumeration.c)
+
+# vim: ft=cmake:
diff --git a/tests/egl/spec/egl_ext_device_enumeration/CMakeLists.txt b/tests/egl/spec/egl_ext_device_enumeration/CMakeLists.txt
new file mode 100644
index 000000000..144a306f4
--- /dev/null
+++ b/tests/egl/spec/egl_ext_device_enumeration/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/egl/spec/egl_ext_device_enumeration/egl_ext_device_enumeration.c b/tests/egl/spec/egl_ext_device_enumeration/egl_ext_device_enumeration.c
new file mode 100644
index 000000000..ce717bf5d
--- /dev/null
+++ b/tests/egl/spec/egl_ext_device_enumeration/egl_ext_device_enumeration.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright © 2016 Red Hat, Inc.
+ * Copyright 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "piglit-util.h"
+#include "piglit-util-egl.h"
+
+#define NDEVS 1024
+
+int
+main(void)
+{
+	enum piglit_result result = PIGLIT_PASS;
+	EGLint i, numdevs;
+	EGLDeviceEXT devs[NDEVS];
+	PFNEGLQUERYDEVICESEXTPROC queryDevices;
+
+	const char *client_exts = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
+	bool has_client_ext =
+		client_exts &&
+		piglit_is_extension_in_string(client_exts,
+			"EGL_EXT_device_query") &&
+		piglit_is_extension_in_string(client_exts,
+			"EGL_EXT_device_enumeration");
+
+	if (!has_client_ext) {
+		printf("EGL_EXT_device_enumeration not supported\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	queryDevices = (void *)eglGetProcAddress("eglQueryDevicesEXT");
+
+	if (!queryDevices) {
+		printf("No device query entrypoint\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	if (queryDevices(0, NULL, &numdevs)) {
+		printf("Failed to get device count\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	if (numdevs < 1) {
+		printf("No devices supported\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	if (numdevs > NDEVS) {
+		printf("More than %d devices, please fix this test\n", NDEVS);
+		result = PIGLIT_WARN;
+		numdevs = NDEVS;
+	}
+
+	memset(devs, 0, sizeof devs);
+	if (!queryDevices(numdevs, devs, &numdevs)) {
+		printf("Failed to enumerate devices\n");
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	for (i = 0; i < numdevs; i++)
+	    if (devs[i] == NULL) {
+		printf("Enumerated device slot not initialized\n");
+		piglit_report_result(PIGLIT_FAIL);
+	    }
+
+	for (i = numdevs; i < ARRAY_SIZE(devs); i++)
+	    if (devs[i] != NULL) {
+		printf("Non-enumerated device slot initialized\n");
+		piglit_report_result(PIGLIT_FAIL);
+	    }
+
+	queryDevices(0, devs, &numdevs);
+	if (!piglit_check_egl_error(EGL_BAD_PARAMETER))
+		piglit_report_result(PIGLIT_FAIL);
+
+	queryDevices(-1, devs, &numdevs);
+	if (!piglit_check_egl_error(EGL_BAD_PARAMETER))
+		piglit_report_result(PIGLIT_FAIL);
+
+	queryDevices(ARRAY_SIZE(devs), devs, NULL);
+	if (!piglit_check_egl_error(EGL_BAD_PARAMETER))
+		piglit_report_result(PIGLIT_FAIL);
+
+	piglit_report_result(result);
+}