tests/glx: Add unit tests for GLX_ARB_create_context GLX protocol

This adds a new tests directory at the top-level and some extra build
infrastructure.  The tests use the Google C++ Testing Framework, and
they will only be built if configure can detect its availability.  The
tests are automatically wired-in to run with 'make check'.

Signed-off-by: Ian Romanick <[email protected]>
Acked-by: Chad Versace <[email protected]>

6 files changed, 1490 insertions, 0 deletions

diff --git a/tests/glx/Makefile.am b/tests/glx/Makefile.am
new file mode 100644
index 00000000000..0b061176e1a
--- /dev/null
+++ b/tests/glx/Makefile.am
@@ -0,0 +1,16 @@
+AM_CFLAGS = -I$(top_builddir)/src/glx -I$(top_builddir)/src/mapi \
+	$(X11_CFLAGS) $(GTEST_CFLAGS)
+AM_CXXFLAGS = -I$(top_builddir)/src/glx -I$(top_builddir)/src/mapi \
+	$(X11_CFLAGS) $(GTEST_CFLAGS)
+
+if HAVE_GTEST
+TESTS = glx_unittest
+check_PROGRAMS = glx_unittest
+
+glx_unittest_SOURCES =			\
+	clientinfo_unittest.cpp		\
+        create_context_unittest.cpp	\
+        fake_glx_screen.cpp
+
+glx_unittest_LDADD = $(top_builddir)/src/glx/libglx.a $(GTEST_LIBS) -lgtest_main
+endif
\ No newline at end of file
diff --git a/tests/glx/clientinfo_unittest.cpp b/tests/glx/clientinfo_unittest.cpp
new file mode 100644
index 00000000000..f599c833a66
--- /dev/null
+++ b/tests/glx/clientinfo_unittest.cpp
@@ -0,0 +1,723 @@
+/*
+ * Copyright © 2011 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 <gtest/gtest.h>
+#include <string.h>
+
+extern "C" {
+#include "glxclient.h"
+}
+
+#include <xcb/glx.h>
+
+#include "mock_xdisplay.h"
+#include "fake_glx_screen.h"
+
+/**
+ * \name Wrappers around some X structures to make the more usable for tests
+ */
+/*@{*/
+class fake_glx_screen;
+
+class fake_glx_display : public glx_display {
+public:
+   fake_glx_display(mock_XDisplay *dpy, int major, int minor)
+   {
+      this->next = 0;
+      this->dpy = dpy;
+      this->majorOpcode = 0;
+      this->majorVersion = major;
+      this->minorVersion = minor;
+      this->serverGLXvendor = 0;
+      this->serverGLXversion = 0;
+      this->glXDrawHash = 0;
+
+      this->screens = new glx_screen *[dpy->nscreens];
+      memset(this->screens, 0, sizeof(struct glx_screen *) * dpy->nscreens);
+   }
+
+   ~fake_glx_display()
+   {
+      for (int i = 0; i < this->dpy->nscreens; i++) {
+	 if (this->screens[i] != NULL)
+	    delete this->screens[i];
+      }
+
+      delete [] this->screens;
+   }
+
+   void init_screen(int i, const char *ext);
+};
+
+class glX_send_client_info_test : public ::testing::Test {
+public:
+   glX_send_client_info_test();
+   virtual ~glX_send_client_info_test();
+   virtual void SetUp();
+
+   void common_protocol_expected_false_test(unsigned major, unsigned minor,
+					    const char *glx_ext, bool *value);
+
+   void common_protocol_expected_true_test(unsigned major, unsigned minor,
+					   const char *glx_ext, bool *value);
+
+   void create_single_screen_display(unsigned major, unsigned minor,
+				     const char *glx_ext);
+
+   void destroy_display();
+
+protected:
+   fake_glx_display *glx_dpy;
+   mock_XDisplay *display;
+};
+
+void
+fake_glx_display::init_screen(int i, const char *ext)
+{
+   if (this->screens[i] != NULL)
+      delete this->screens[i];
+
+   this->screens[i] = new fake_glx_screen(this, i, ext);
+}
+/*@}*/
+
+static const char ext[] = "GL_XXX_dummy";
+
+static bool ClientInfo_was_sent;
+static bool SetClientInfoARB_was_sent;
+static bool SetClientInfo2ARB_was_sent;
+static xcb_connection_t *connection_used;
+static int gl_ext_length;
+static char *gl_ext_string;
+static int glx_ext_length;
+static char *glx_ext_string;
+static int num_gl_versions;
+static uint32_t *gl_versions;
+static int glx_major;
+static int glx_minor;
+
+extern "C" xcb_connection_t *
+XGetXCBConnection(Display *dpy)
+{
+   return (xcb_connection_t *) 0xdeadbeef;
+}
+
+extern "C" xcb_void_cookie_t
+xcb_glx_client_info(xcb_connection_t *c,
+		    uint32_t major_version,
+		    uint32_t minor_version,
+		    uint32_t str_len,
+		    const char *string)
+{
+   xcb_void_cookie_t cookie;
+
+   ClientInfo_was_sent = true;
+   connection_used = c;
+
+   gl_ext_string = (char *) malloc(str_len);
+   memcpy(gl_ext_string, string, str_len);
+   gl_ext_length = str_len;
+
+   glx_major = major_version;
+   glx_minor = minor_version;
+
+   cookie.sequence = 0;
+   return cookie;
+}
+
+extern "C" xcb_void_cookie_t
+xcb_glx_set_client_info_arb(xcb_connection_t *c,
+			    uint32_t major_version,
+			    uint32_t minor_version,
+			    uint32_t num_versions,
+			    uint32_t gl_str_len,
+			    uint32_t glx_str_len,
+			    const uint32_t *versions,
+			    const char *gl_string,
+			    const char *glx_string)
+{
+   xcb_void_cookie_t cookie;
+
+   SetClientInfoARB_was_sent = true;
+   connection_used = c;
+
+   gl_ext_string = new char[gl_str_len];
+   memcpy(gl_ext_string, gl_string, gl_str_len);
+   gl_ext_length = gl_str_len;
+
+   glx_ext_string = new char[glx_str_len];
+   memcpy(glx_ext_string, glx_string, glx_str_len);
+   glx_ext_length = glx_str_len;
+
+   gl_versions = new uint32_t[num_versions * 2];
+   memcpy(gl_versions, versions, sizeof(uint32_t) * num_versions * 2);
+   num_gl_versions = num_versions;
+
+   glx_major = major_version;
+   glx_minor = minor_version;
+
+   cookie.sequence = 0;
+   return cookie;
+}
+
+extern "C" xcb_void_cookie_t
+xcb_glx_set_client_info_2arb(xcb_connection_t *c,
+			     uint32_t major_version,
+			     uint32_t minor_version,
+			     uint32_t num_versions,
+			     uint32_t gl_str_len,
+			     uint32_t glx_str_len,
+			     const uint32_t *versions,
+			     const char *gl_string,
+			     const char *glx_string)
+{
+   xcb_void_cookie_t cookie;
+
+   SetClientInfo2ARB_was_sent = true;
+   connection_used = c;
+
+   gl_ext_string = new char[gl_str_len];
+   memcpy(gl_ext_string, gl_string, gl_str_len);
+   gl_ext_length = gl_str_len;
+
+   glx_ext_string = new char[glx_str_len];
+   memcpy(glx_ext_string, glx_string, glx_str_len);
+   glx_ext_length = glx_str_len;
+
+   gl_versions = new uint32_t[num_versions * 3];
+   memcpy(gl_versions, versions, sizeof(uint32_t) * num_versions * 3);
+   num_gl_versions = num_versions;
+
+   glx_major = major_version;
+   glx_minor = minor_version;
+
+   cookie.sequence = 0;
+   return cookie;
+}
+
+extern "C" char *
+__glXGetClientGLExtensionString()
+{
+   char *str = (char *) malloc(sizeof(ext));
+
+   memcpy(str, ext, sizeof(ext));
+   return str;
+}
+
+glX_send_client_info_test::glX_send_client_info_test()
+   : glx_dpy(0), display(0)
+{
+   /* empty */
+}
+
+glX_send_client_info_test::~glX_send_client_info_test()
+{
+   if (glx_dpy)
+      delete glx_dpy;
+
+   if (display)
+      delete display;
+}
+
+void
+glX_send_client_info_test::destroy_display()
+{
+   if (this->glx_dpy != NULL) {
+      if (this->glx_dpy->screens != NULL) {
+	 for (int i = 0; i < this->display->nscreens; i++) {
+	    delete [] this->glx_dpy->screens[i]->serverGLXexts;
+	    delete this->glx_dpy->screens[i];
+	 }
+
+	 delete [] this->glx_dpy->screens;
+      }
+
+      delete this->glx_dpy;
+      delete this->display;
+   }
+}
+
+void
+glX_send_client_info_test::SetUp()
+{
+   ClientInfo_was_sent = false;
+   SetClientInfoARB_was_sent = false;
+   SetClientInfo2ARB_was_sent = false;
+   connection_used = (xcb_connection_t *) ~0;
+   gl_ext_length = 0;
+   gl_ext_string = (char *) 0;
+   glx_ext_length = 0;
+   glx_ext_string = (char *) 0;
+   num_gl_versions = 0;
+   gl_versions = (uint32_t *) 0;
+   glx_major = 0;
+   glx_minor = 0;
+}
+
+void
+glX_send_client_info_test::create_single_screen_display(unsigned major,
+							unsigned minor,
+							const char *glx_ext)
+{
+   this->display = new mock_XDisplay(1);
+
+   this->glx_dpy = new fake_glx_display(this->display, major, minor);
+   this->glx_dpy->init_screen(0, glx_ext);
+}
+
+void
+glX_send_client_info_test::common_protocol_expected_false_test(unsigned major,
+							       unsigned minor,
+							       const char *glx_ext,
+							       bool *value)
+{
+   create_single_screen_display(major, minor, glx_ext);
+   __glX_send_client_info(this->glx_dpy);
+   EXPECT_FALSE(*value);
+}
+
+void
+glX_send_client_info_test::common_protocol_expected_true_test(unsigned major,
+							      unsigned minor,
+							      const char *glx_ext,
+							      bool *value)
+{
+   create_single_screen_display(major, minor, glx_ext);
+   __glX_send_client_info(this->glx_dpy);
+   EXPECT_TRUE(*value);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_ClientInfo_for_1_0)
+{
+   /* The glXClientInfo protocol was added in GLX 1.1.  Verify that no
+    * glXClientInfo is sent to a GLX server that only has GLX 1.0.
+    */
+   common_protocol_expected_false_test(1, 0, "", &ClientInfo_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfoARB_for_1_0)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that no glXSetClientInfoARB is
+    * sent to a GLX server that only has GLX 1.0 regardless of the extension
+    * setting.
+    */
+   common_protocol_expected_false_test(1, 0,
+				       "GLX_ARB_create_context",
+				       &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfoARB_for_1_1)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that no glXSetClientInfoARB is
+    * sent to a GLX server that only has GLX 1.0 regardless of the extension
+    * setting.
+    */
+   common_protocol_expected_false_test(1, 1,
+				       "GLX_ARB_create_context",
+				       &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfoARB_for_1_4_with_empty_extensions)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that no glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 but has an empty extension string
+    * (i.e., no extensions at all).
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "",
+				       &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfoARB_for_1_4_without_extension)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that no glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 but doesn't have the extension.
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "GLX_EXT_texture_from_pixmap",
+				       &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfoARB_for_1_4_with_wrong_extension)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that no glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 but does not have the extension.
+    *
+    * This test differs from
+    * doesnt_send_SetClientInfoARB_for_1_4_without_extension in that an
+    * extension exists that looks like the correct extension but isn't.
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "GLX_ARB_create_context2",
+				       &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfoARB_for_1_4_with_profile_extension)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that no glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 but does not have the extension.
+    *
+    * This test differs from
+    * doesnt_send_SetClientInfoARB_for_1_4_without_extension in that an
+    * extension exists that looks like the correct extension but isn't.
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "GLX_ARB_create_context_profile",
+				       &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfo2ARB_for_1_0)
+{
+   /* The glXSetClientInfo2ARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context_profile extension.  Verify that no
+    * glXSetClientInfo2ARB is sent to a GLX server that only has GLX 1.0
+    * regardless of the extension setting.
+    */
+   common_protocol_expected_false_test(1, 0,
+				       "GLX_ARB_create_context_profile",
+				       &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfo2ARB_for_1_1)
+{
+   /* The glXSetClientInfo2ARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context_profile extension.  Verify that no
+    * glXSetClientInfo2ARB is sent to a GLX server that only has GLX 1.1
+    * regardless of the extension setting.
+    */
+   common_protocol_expected_false_test(1, 1,
+				       "GLX_ARB_create_context_profile",
+				       &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfo2ARB_for_1_4_with_empty_extensions)
+{
+   /* The glXSetClientInfo2ARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context_profile extension.  Verify that no
+    * glXSetClientInfo2ARB is sent to a GLX server that has GLX 1.4 but has an
+    * empty extension string (i.e., no extensions at all).
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "",
+				       &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfo2ARB_for_1_4_without_extension)
+{
+   /* The glXSetClientInfo2ARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context_profile extension.  Verify that no
+    * glXSetClientInfo2ARB is sent to a GLX server that has GLX 1.4 but
+    * doesn't have the extension.
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "GLX_EXT_texture_from_pixmap",
+				       &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, doesnt_send_SetClientInfo2ARB_for_1_4_with_wrong_extension)
+{
+   /* The glXSetClientInfo2ARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context_profile extension.  Verify that no
+    * glXSetClientInfo2ARB is sent to a GLX server that has GLX 1.4 but does
+    * not have the extension.
+    *
+    * This test differs from
+    * doesnt_send_SetClientInfo2ARB_for_1_4_without_extension in that an
+    * extension exists that looks like the correct extension but isn't.
+    */
+   common_protocol_expected_false_test(1, 4,
+				       "GLX_ARB_create_context_profile2",
+				       &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, does_send_ClientInfo_for_1_1)
+{
+   /* The glXClientInfo protocol was added in GLX 1.1.  Verify that
+    * glXClientInfo is sent to a GLX server that has GLX 1.1.
+    */
+   common_protocol_expected_true_test(1, 1,
+				      "",
+				      &ClientInfo_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, does_send_SetClientInfoARB_for_1_4_with_extension)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 and the extension.
+    */
+   common_protocol_expected_true_test(1, 4,
+				      "GLX_ARB_create_context",
+				      &SetClientInfoARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, does_send_SetClientInfo2ARB_for_1_4_with_just_profile_extension)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 and the extension.
+    */
+   common_protocol_expected_true_test(1, 4,
+				      "GLX_ARB_create_context_profile",
+				      &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, does_send_SetClientInfo2ARB_for_1_4_with_both_extensions)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 and the extension.
+    */
+   common_protocol_expected_true_test(1, 4,
+				      "GLX_ARB_create_context "
+				      "GLX_ARB_create_context_profile",
+				      &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, does_send_SetClientInfo2ARB_for_1_4_with_both_extensions_reversed)
+{
+   /* The glXSetClientInfoARB protocol was added in GLX 1.4 with the
+    * GLX_ARB_create_context extension.  Verify that glXSetClientInfoARB is
+    * sent to a GLX server that has GLX 1.4 and the extension.
+    */
+   common_protocol_expected_true_test(1, 4,
+				      "GLX_ARB_create_context_profile "
+				      "GLX_ARB_create_context",
+				      &SetClientInfo2ARB_was_sent);
+}
+
+TEST_F(glX_send_client_info_test, uses_correct_connection)
+{
+   create_single_screen_display(1, 1, "");
+   __glX_send_client_info(this->glx_dpy);
+   EXPECT_EQ((xcb_connection_t *) 0xdeadbeef, connection_used);
+}
+
+TEST_F(glX_send_client_info_test, sends_correct_gl_extension_string)
+{
+   create_single_screen_display(1, 1, "");
+   __glX_send_client_info(this->glx_dpy);
+
+   ASSERT_EQ(sizeof(ext), gl_ext_length);
+   ASSERT_NE((char *) 0, gl_ext_string);
+   EXPECT_EQ(0, memcmp(gl_ext_string, ext, sizeof(ext)));
+}
+
+TEST_F(glX_send_client_info_test, gl_versions_are_sane)
+{
+   create_single_screen_display(1, 4, "GLX_ARB_create_context");
+   __glX_send_client_info(this->glx_dpy);
+
+   ASSERT_NE(0, num_gl_versions);
+
+   unsigned versions_below_3_0 = 0;
+   for (int i = 0; i < num_gl_versions; i++) {
+      EXPECT_LT(0, gl_versions[i * 2]);
+      EXPECT_GE(4, gl_versions[i * 2]);
+
+      /* Verify that the minor version advertised with the major version makes
+       * sense.
+       */
+      switch (gl_versions[i * 2]) {
+      case 1:
+	 EXPECT_GE(5, gl_versions[i * 2 + 1]);
+	 versions_below_3_0++;
+	 break;
+      case 2:
+	 EXPECT_GE(1, gl_versions[i * 2 + 1]);
+	 versions_below_3_0++;
+	 break;
+      case 3:
+	 EXPECT_GE(3, gl_versions[i * 2 + 1]);
+	 break;
+      case 4:
+	 EXPECT_GE(2, gl_versions[i * 2 + 1]);
+	 break;
+      }
+   }
+
+   /* From the GLX_ARB_create_context spec:
+    *
+    *     "Only the highest supported version below 3.0 should be sent, since
+    *     OpenGL 2.1 is backwards compatible with all earlier versions."
+    */
+   EXPECT_LE(versions_below_3_0, 1);
+}
+
+TEST_F(glX_send_client_info_test, gl_versions_and_profiles_are_sane)
+{
+   create_single_screen_display(1, 4, "GLX_ARB_create_context_profile");
+   __glX_send_client_info(this->glx_dpy);
+
+   ASSERT_NE(0, num_gl_versions);
+
+   const uint32_t all_valid_bits = GLX_CONTEXT_CORE_PROFILE_BIT_ARB
+      | GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
+
+   unsigned versions_below_3_0 = 0;
+
+   for (int i = 0; i < num_gl_versions; i++) {
+      EXPECT_LT(0, gl_versions[i * 3]);
+      EXPECT_GE(4, gl_versions[i * 3]);
+
+      /* Verify that the minor version advertised with the major version makes
+       * sense.
+       */
+      switch (gl_versions[i * 3]) {
+      case 1:
+	 EXPECT_GE(5, gl_versions[i * 3 + 1]);
+	 EXPECT_EQ(0, gl_versions[i * 3 + 2]);
+	 versions_below_3_0++;
+	 break;
+      case 2:
+	 EXPECT_GE(1, gl_versions[i * 3 + 1]);
+	 EXPECT_EQ(0, gl_versions[i * 3 + 2]);
+	 versions_below_3_0++;
+	 break;
+      case 3:
+	 EXPECT_GE(3, gl_versions[i * 3 + 1]);
+
+	 /* Profiles were not introduced until OpenGL 3.2.
+	  */
+	 if (gl_versions[i * 3 + 1] < 2) {
+	    EXPECT_EQ(0, gl_versions[i * 3 + 2]);
+	 } else {
+	    EXPECT_EQ(0, gl_versions[i * 3 + 2] & ~all_valid_bits);
+	 }
+	 break;
+      case 4:
+	 EXPECT_GE(2, gl_versions[i * 3 + 1]);
+	 EXPECT_EQ(0, gl_versions[i * 3 + 2] & ~all_valid_bits);
+	 break;
+      }
+   }
+
+   /* From the GLX_ARB_create_context_profile spec:
+    *
+    *     "Only the highest supported version below 3.0 should be sent, since
+    *     OpenGL 2.1 is backwards compatible with all earlier versions."
+    */
+   EXPECT_LE(versions_below_3_0, 1);
+}
+
+TEST_F(glX_send_client_info_test, glx_version_is_1_4_for_1_1)
+{
+   create_single_screen_display(1, 1, "");
+   __glX_send_client_info(this->glx_dpy);
+
+   EXPECT_EQ(1, glx_major);
+   EXPECT_EQ(4, glx_minor);
+}
+
+TEST_F(glX_send_client_info_test, glx_version_is_1_4_for_1_4)
+{
+   create_single_screen_display(1, 4, "");
+   __glX_send_client_info(this->glx_dpy);
+
+   EXPECT_EQ(1, glx_major);
+   EXPECT_EQ(4, glx_minor);
+}
+
+TEST_F(glX_send_client_info_test, glx_version_is_1_4_for_1_4_with_ARB_create_context)
+{
+   create_single_screen_display(1, 4, "GLX_ARB_create_context");
+   __glX_send_client_info(this->glx_dpy);
+
+   EXPECT_EQ(1, glx_major);
+   EXPECT_EQ(4, glx_minor);
+}
+
+TEST_F(glX_send_client_info_test, glx_version_is_1_4_for_1_4_with_ARB_create_context_profile)
+{
+   create_single_screen_display(1, 4, "GLX_ARB_create_context_profile");
+   __glX_send_client_info(this->glx_dpy);
+
+   EXPECT_EQ(1, glx_major);
+   EXPECT_EQ(4, glx_minor);
+}
+
+TEST_F(glX_send_client_info_test, glx_version_is_1_4_for_1_5)
+{
+   create_single_screen_display(1, 5, "");
+   __glX_send_client_info(this->glx_dpy);
+
+   EXPECT_EQ(1, glx_major);
+   EXPECT_EQ(4, glx_minor);
+}
+
+TEST_F(glX_send_client_info_test, glx_extensions_has_GLX_ARB_create_context)
+{
+   create_single_screen_display(1, 4, "GLX_ARB_create_context");
+   __glX_send_client_info(this->glx_dpy);
+
+   ASSERT_NE(0, glx_ext_length);
+   ASSERT_NE((char *) 0, glx_ext_string);
+
+   bool found_GLX_ARB_create_context = false;
+   const char *const needle = "GLX_ARB_create_context";
+   const unsigned len = strlen(needle);
+   char *haystack = glx_ext_string;
+   while (haystack != NULL) {
+      char *match = strstr(haystack, needle);
+
+      if (match[len] == '\0' || match[len] == ' ') {
+	 found_GLX_ARB_create_context = true;
+	 break;
+      }
+
+      haystack = match + len;
+   }
+
+   EXPECT_TRUE(found_GLX_ARB_create_context);
+}
+
+TEST_F(glX_send_client_info_test, glx_extensions_has_GLX_ARB_create_context_profile)
+{
+   create_single_screen_display(1, 4, "GLX_ARB_create_context_profile");
+   __glX_send_client_info(this->glx_dpy);
+
+   ASSERT_NE(0, glx_ext_length);
+   ASSERT_NE((char *) 0, glx_ext_string);
+
+   bool found_GLX_ARB_create_context_profile = false;
+   const char *const needle = "GLX_ARB_create_context_profile";
+   const unsigned len = strlen(needle);
+   char *haystack = glx_ext_string;
+   while (haystack != NULL) {
+      char *match = strstr(haystack, needle);
+
+      if (match[len] == '\0' || match[len] == ' ') {
+	 found_GLX_ARB_create_context_profile = true;
+	 break;
+      }
+
+      haystack = match + len;
+   }
+
+   EXPECT_TRUE(found_GLX_ARB_create_context_profile);
+}
diff --git a/tests/glx/create_context_unittest.cpp b/tests/glx/create_context_unittest.cpp
new file mode 100644
index 00000000000..f97ec7ca5f2
--- /dev/null
+++ b/tests/glx/create_context_unittest.cpp
@@ -0,0 +1,513 @@
+/*
+ * Copyright © 2011 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 <gtest/gtest.h>
+#include <string.h>
+
+extern "C" {
+#include "glxclient.h"
+#include "glx_error.h"
+}
+
+#include <xcb/glx.h>
+#include "mock_xdisplay.h"
+#include "fake_glx_screen.h"
+
+static bool CreateContextAttribsARB_was_sent;
+static xcb_glx_create_context_attribs_arb_request_t req;
+static uint32_t sent_attribs[1024];
+static uint32_t next_id;
+
+
+struct glx_screen *psc;
+
+extern "C" Bool
+glx_context_init(struct glx_context *gc,
+		 struct glx_screen *psc, struct glx_config *config)
+{
+   gc->majorOpcode = 123;
+   gc->screen = psc->scr;
+   gc->psc = psc;
+   gc->config = config;
+   gc->isDirect = GL_TRUE;
+   gc->currentContextTag = -1;
+
+   return GL_TRUE;
+}
+
+extern "C" struct glx_screen *
+GetGLXScreenConfigs(Display * dpy, int scrn)
+{
+   (void) dpy;
+   (void) scrn;
+   return psc;
+}
+
+extern "C" uint32_t
+xcb_generate_id(xcb_connection_t *c)
+{
+   (void) c;
+
+   return next_id++;
+}
+
+extern "C" xcb_void_cookie_t
+xcb_glx_create_context_attribs_arb_checked(xcb_connection_t *c,
+					   xcb_glx_context_t context,
+					   uint32_t fbconfig,
+					   uint32_t screen,
+					   uint32_t share_list,
+					   uint8_t is_direct,
+					   uint32_t num_attribs,
+					   const uint32_t *attribs)
+{
+   (void) c;
+
+   CreateContextAttribsARB_was_sent = true;
+   req.context = context;
+   req.fbconfig = fbconfig;
+   req.screen = screen;
+   req.share_list = share_list;
+   req.is_direct = is_direct;
+   req.num_attribs = num_attribs;
+
+   if (num_attribs != 0 && attribs != NULL)
+      memcpy(sent_attribs, attribs, num_attribs * 2 * sizeof(uint32_t));
+
+   xcb_void_cookie_t cookie;
+   cookie.sequence = 0xbadc0de;
+
+   return cookie;
+}
+
+extern "C" xcb_generic_error_t *
+xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie)
+{
+   return NULL;
+}
+
+extern "C" void
+__glXSendErrorForXcb(Display * dpy, const xcb_generic_error_t *err)
+{
+}
+
+extern "C" void
+__glXSendError(Display * dpy, int_fast8_t errorCode, uint_fast32_t resourceID,
+               uint_fast16_t minorCode, bool coreX11error)
+{
+}
+
+class glXCreateContextAttribARB_test : public ::testing::Test {
+public:
+   virtual void SetUp();
+
+   /**
+    * Replace the existing screen with a direct-rendering screen
+    */
+   void use_direct_rendering_screen();
+
+   mock_XDisplay *dpy;
+   struct glx_config fbc;
+};
+
+void
+glXCreateContextAttribARB_test::SetUp()
+{
+   CreateContextAttribsARB_was_sent = false;
+   memset(&req, 0, sizeof(req));
+   next_id = 99;
+   fake_glx_context::contexts_allocated = 0;
+   psc = new fake_glx_screen(NULL, 0, "");
+
+   this->dpy = new mock_XDisplay(1);
+
+   memset(&this->fbc, 0, sizeof(this->fbc));
+   this->fbc.fbconfigID = 0xbeefcafe;
+}
+
+void
+glXCreateContextAttribARB_test::use_direct_rendering_screen()
+{
+   struct glx_screen *direct_psc =
+      new fake_glx_screen_direct(psc->display,
+				 psc->scr,
+				 psc->serverGLXexts);
+
+   delete psc;
+   psc = direct_psc;
+}
+
+/**
+ * \name Verify detection of client-side errors
+ */
+/*@{*/
+TEST_F(glXCreateContextAttribARB_test, NULL_display_returns_None)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(NULL, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   EXPECT_EQ(None, ctx);
+   EXPECT_EQ(0, fake_glx_context::contexts_allocated);
+}
+
+TEST_F(glXCreateContextAttribARB_test, NULL_fbconfig_returns_None)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, NULL, 0, False, NULL);
+
+   EXPECT_EQ(None, ctx);
+   EXPECT_EQ(0, fake_glx_context::contexts_allocated);
+}
+
+TEST_F(glXCreateContextAttribARB_test, NULL_screen_returns_None)
+{
+   delete psc;
+   psc = NULL;
+
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   EXPECT_EQ(None, ctx);
+   EXPECT_EQ(0, fake_glx_context::contexts_allocated);
+}
+/*@}*/
+
+/**
+ * \name Verify that correct protocol bits are sent to the server.
+ */
+/*@{*/
+TEST_F(glXCreateContextAttribARB_test, does_send_protocol)
+{
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_TRUE(CreateContextAttribsARB_was_sent);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_context)
+{
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_EQ(99, req.context);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_fbconfig)
+{
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_EQ(0xbeefcafe, req.fbconfig);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_share_list)
+{
+   GLXContext share =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, share);
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, share,
+			      False, NULL);
+
+   struct glx_context *glx_ctx = (struct glx_context *) share;
+   EXPECT_EQ(glx_ctx->xid, req.share_list);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_is_direct_for_indirect_screen_and_direct_set_to_true)
+{
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      True, NULL);
+
+   EXPECT_FALSE(req.is_direct);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_is_direct_for_indirect_screen_and_direct_set_to_false)
+{
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_FALSE(req.is_direct);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_is_direct_for_direct_screen_and_direct_set_to_true)
+{
+   this->use_direct_rendering_screen();
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      True, NULL);
+
+   EXPECT_TRUE(req.is_direct);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_is_direct_for_direct_screen_and_direct_set_to_false)
+{
+   this->use_direct_rendering_screen();
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_FALSE(req.is_direct);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_screen)
+{
+   this->fbc.screen = 7;
+   psc->scr = 7;
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_EQ(7, req.screen);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_num_attribs)
+{
+   /* Use zeros in the second half of each attribute pair to try and trick the
+    * implementation into termiating the list early.
+    *
+    * Use non-zero in the second half of the last attribute pair to try and
+    * trick the implementation into not terminating the list early enough.
+    */
+   static const int attribs[] = {
+      1, 0,
+      2, 0,
+      3, 0,
+      4, 0,
+      0, 6,
+      0, 0
+   };
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, attribs);
+
+   EXPECT_EQ(4, req.num_attribs);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_num_attribs_empty_list)
+{
+   static const int attribs[] = {
+      0,
+   };
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, attribs);
+
+   EXPECT_EQ(0, req.num_attribs);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_num_attribs_NULL_list_pointer)
+{
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, NULL);
+
+   EXPECT_EQ(0, req.num_attribs);
+}
+
+TEST_F(glXCreateContextAttribARB_test, sent_correct_attrib_list)
+{
+   int attribs[] = {
+      GLX_RENDER_TYPE, GLX_RGBA_TYPE,
+      GLX_CONTEXT_MAJOR_VERSION_ARB, 1,
+      GLX_CONTEXT_MINOR_VERSION_ARB, 2,
+      0
+   };
+
+   glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+			      False, attribs);
+
+   for (unsigned i = 0; i < 6; i++) {
+      EXPECT_EQ(attribs[i], sent_attribs[i]);
+   }
+}
+/*@}*/
+
+/**
+ * \name Verify details of the returned GLXContext
+ */
+/*@{*/
+TEST_F(glXCreateContextAttribARB_test, correct_context)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   /* Since the server did not return an error, the GLXContext should not be
+    * NULL.
+    */
+   EXPECT_NE((GLXContext)0, ctx);
+
+   /* It shouldn't be the XID of the context either.
+    */
+   EXPECT_NE((GLXContext)99, ctx);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_xid)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   /* Since the server did not return an error, the GLXContext should not be
+    * NULL.
+    */
+   ASSERT_NE((GLXContext)0, ctx);
+
+   struct glx_context *glx_ctx = (struct glx_context *) ctx;
+   EXPECT_EQ(99, glx_ctx->xid);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_share_xid)
+{
+   GLXContext first =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, first);
+
+   GLXContext second =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, first,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, second);
+
+   struct glx_context *share = (struct glx_context *) first;
+   struct glx_context *ctx = (struct glx_context *) second;
+   EXPECT_EQ(share->xid, ctx->share_xid);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_isDirect_for_indirect_screen_and_direct_set_to_true)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 True, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_FALSE(gc->isDirect);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_isDirect_for_indirect_screen_and_direct_set_to_false)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_FALSE(gc->isDirect);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_isDirect_for_direct_screen_and_direct_set_to_true)
+{
+   this->use_direct_rendering_screen();
+
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 True, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_TRUE(gc->isDirect);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_isDirect_for_direct_screen_and_direct_set_to_false)
+{
+   this->use_direct_rendering_screen();
+
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_FALSE(gc->isDirect);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_indirect_context_client_state_private)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   ASSERT_FALSE(gc->isDirect);
+   EXPECT_EQ((struct __GLXattributeRec *) 0xcafebabe,
+	     gc->client_state_private);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_indirect_context_config)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_EQ(&this->fbc, gc->config);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_screen_number)
+{
+   this->fbc.screen = 7;
+   psc->scr = 7;
+
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_EQ(7, gc->screen);
+}
+
+TEST_F(glXCreateContextAttribARB_test, correct_context_screen_pointer)
+{
+   GLXContext ctx =
+      glXCreateContextAttribsARB(this->dpy, (GLXFBConfig) &this->fbc, 0,
+				 False, NULL);
+
+   ASSERT_NE((GLXContext) 0, ctx);
+
+   struct glx_context *gc = (struct glx_context *) ctx;
+
+   EXPECT_EQ(psc, gc->psc);
+}
+/*@}*/
diff --git a/tests/glx/fake_glx_screen.cpp b/tests/glx/fake_glx_screen.cpp
new file mode 100644
index 00000000000..12d003b84f7
--- /dev/null
+++ b/tests/glx/fake_glx_screen.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2011 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 "fake_glx_screen.h"
+
+struct glx_screen_vtable fake_glx_screen::vt = {
+   indirect_create_context,
+   fake_glx_context::create_attribs
+};
+
+struct glx_screen_vtable fake_glx_screen_direct::vt = {
+   fake_glx_context_direct::create,
+   fake_glx_context_direct::create_attribs
+};
+
+const struct glx_context_vtable fake_glx_context::vt = {
+   fake_glx_context::destroy,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+};
+
+int fake_glx_context::contexts_allocated = 0;
+
+extern "C" struct glx_context *
+indirect_create_context(struct glx_screen *psc, struct glx_config *mode,
+			struct glx_context *shareList, int renderType)
+{
+   (void) shareList;
+   (void) renderType;
+
+   return new fake_glx_context(psc, mode);
+}
diff --git a/tests/glx/fake_glx_screen.h b/tests/glx/fake_glx_screen.h
new file mode 100644
index 00000000000..21515225971
--- /dev/null
+++ b/tests/glx/fake_glx_screen.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright © 2011 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.
+ */
+extern "C" {
+#include "glxclient.h"
+};
+
+class fake_glx_screen : public glx_screen {
+public:
+   fake_glx_screen(struct glx_display *glx_dpy, int num, const char *ext)
+   {
+      this->vtable = &fake_glx_screen::vt;
+      this->serverGLXexts = 0;
+      this->effectiveGLXexts = 0;
+      this->display = 0;
+      this->dpy = 0;
+      this->scr = num;
+      this->visuals = 0;
+      this->configs = 0;
+
+      this->display = glx_dpy;
+      this->dpy = (glx_dpy != NULL) ? glx_dpy->dpy : NULL;
+
+      this->serverGLXexts = new char[strlen(ext)];
+      strcpy((char *) this->serverGLXexts, ext);
+   }
+
+   ~fake_glx_screen()
+   {
+      delete [] this->serverGLXexts;
+   }
+
+private:
+   static struct glx_screen_vtable vt;
+};
+
+class fake_glx_screen_direct : public fake_glx_screen {
+public:
+   fake_glx_screen_direct(struct glx_display *glx_dpy, int num,
+			  const char *ext)
+      : fake_glx_screen(glx_dpy, num, ext)
+   {
+      this->vtable = &fake_glx_screen_direct::vt;
+   }
+
+private:
+   static struct glx_screen_vtable vt;
+};
+
+class fake_glx_context : public glx_context {
+public:
+   fake_glx_context(struct glx_screen *psc, struct glx_config *mode)
+   {
+      contexts_allocated++;
+
+      this->vtable = &fake_glx_context::vt;
+      this->majorOpcode = 123;
+      this->screen = psc->scr;
+      this->psc = psc;
+      this->config = mode;
+      this->isDirect = false;
+      this->currentContextTag = -1;
+
+      this->client_state_private = (struct __GLXattributeRec *) 0xcafebabe;
+   }
+
+   ~fake_glx_context()
+   {
+      contexts_allocated--;
+   }
+
+   static glx_context *create_attribs(struct glx_screen *psc,
+				      struct glx_config *mode,
+				      struct glx_context *shareList,
+				      unsigned num_attribs,
+				      const uint32_t *attribs,
+				      unsigned *error)
+   {
+      (void) shareList;
+      (void) num_attribs;
+      (void) attribs;
+
+      *error = 0;
+      return new fake_glx_context(psc, mode);
+   }
+
+   /** Number of context that are allocated (and not freed). */
+   static int contexts_allocated;
+
+private:
+   static const struct glx_context_vtable vt;
+
+   static void destroy(struct glx_context *gc)
+   {
+      delete gc;
+   }
+};
+
+class fake_glx_context_direct : public fake_glx_context {
+public:
+   fake_glx_context_direct(struct glx_screen *psc, struct glx_config *mode)
+      : fake_glx_context(psc, mode)
+   {
+      this->isDirect = True;
+   }
+
+   static glx_context *create(struct glx_screen *psc, struct glx_config *mode,
+			      struct glx_context *shareList, int renderType)
+   {
+      (void) shareList;
+      (void) renderType;
+
+      return new fake_glx_context_direct(psc, mode);
+   }
+
+   static glx_context *create_attribs(struct glx_screen *psc,
+				      struct glx_config *mode,
+				      struct glx_context *shareList,
+				      unsigned num_attribs,
+				      const uint32_t *attribs,
+				      unsigned *error)
+   {
+      (void) shareList;
+      (void) num_attribs;
+      (void) attribs;
+
+      *error = 0;
+      return new fake_glx_context_direct(psc, mode);
+   }
+};
diff --git a/tests/glx/mock_xdisplay.h b/tests/glx/mock_xdisplay.h
new file mode 100644
index 00000000000..736a2784050
--- /dev/null
+++ b/tests/glx/mock_xdisplay.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2011 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 <X11/X.h>
+
+class mock_XDisplay : public _XDisplay {
+public:
+   mock_XDisplay(int nscreens)
+   {
+      memset(this, 0, sizeof(struct _XDisplay));
+      this->nscreens = nscreens;
+   }
+};