2 files changed, 79 insertions, 0 deletions
diff --git a/tests/test_browser.py b/tests/test_browser.py
index 1900e2cf..111702e6 100644
--- a/tests/test_browser.py
+++ b/tests/test_browser.py
@@ -1147,6 +1147,12 @@ keydown(100);keyup(100); // trigger the end
     Popen([PYTHON, EMCC, '-O2', os.path.join(self.get_dir(), 'glfw.c'), '-o', 'page.html', '-s', 'LEGACY_GL_EMULATION=1']).communicate()
     self.run_browser('page.html', '', '/report_result?1')
 
+  def test_egl(self):
+    open(os.path.join(self.get_dir(), 'test_egl.c'), 'w').write(self.with_report_result(open(path_from_root('tests', 'test_egl.c')).read()))
+
+    Popen([PYTHON, EMCC, '-O2', os.path.join(self.get_dir(), 'test_egl.c'), '-o', 'page.html']).communicate()
+    self.run_browser('page.html', '', '/report_result?1')
+
   def test_egl_width_height(self):
     open(os.path.join(self.get_dir(), 'test_egl_width_height.c'), 'w').write(self.with_report_result(open(path_from_root('tests', 'test_egl_width_height.c')).read()))
 
diff --git a/tests/test_egl.c b/tests/test_egl.c
new file mode 100644
index 00000000..5864a797
--- /dev/null
+++ b/tests/test_egl.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <EGL/egl.h>
+
+int result = 1; // Success
+#define assert(x) do { if (!(x)) {result = 0; printf("Assertion failure: %s in %s:%d!\n", #x, __FILE__, __LINE__); } } while(0)
+
+int main(int argc, char *argv[])
+{
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    assert(display != EGL_NO_DISPLAY);
+    assert(eglGetError() == EGL_SUCCESS);
+
+    EGLint major = 0, minor = 0;
+    EGLBoolean ret = eglInitialize(display, &major, &minor);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(ret == EGL_TRUE);
+    assert(major * 10000 + minor >= 10004);
+
+    EGLint numConfigs;
+    ret = eglGetConfigs(display, NULL, 0, &numConfigs);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(ret == EGL_TRUE);
+
+    EGLint attribs[] = {
+        EGL_RED_SIZE, 5,
+        EGL_GREEN_SIZE, 6,
+        EGL_BLUE_SIZE, 5,
+        EGL_NONE
+    };
+    EGLConfig config;
+    ret = eglChooseConfig(display, attribs, &config, 1, &numConfigs);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(ret == EGL_TRUE);
+
+    EGLNativeWindowType dummyWindow;
+    EGLSurface surface = eglCreateWindowSurface(display, config, dummyWindow, NULL);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(surface != 0);
+
+    EGLint contextAttribs[] =
+    {
+        EGL_CONTEXT_CLIENT_VERSION, 2,
+        EGL_NONE
+    };
+    EGLContext context = eglCreateContext(display, config, NULL, contextAttribs);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(context != 0);
+
+    assert(eglGetCurrentContext() == 0); // Creating a context does not yet activate it.
+    assert(eglGetError() == EGL_SUCCESS);
+
+    ret = eglMakeCurrent(display, surface, surface, context);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(ret == EGL_TRUE);
+    assert(eglGetCurrentContext() == context);
+    assert(eglGetCurrentSurface(EGL_READ) == surface);
+    assert(eglGetCurrentSurface(EGL_DRAW) == surface);
+
+    ret = eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(ret == EGL_TRUE);
+    assert(eglGetCurrentContext() == EGL_NO_CONTEXT);
+    assert(eglGetCurrentSurface(EGL_READ) == EGL_NO_SURFACE);
+    assert(eglGetCurrentSurface(EGL_DRAW) == EGL_NO_SURFACE);
+
+    ret = eglTerminate(display);
+    assert(eglGetError() == EGL_SUCCESS);
+    assert(ret == EGL_TRUE);
+    
+#ifdef REPORT_RESULT
+    REPORT_RESULT();
+#endif
+}