1 files changed, 88 insertions, 0 deletions
diff --git a/tests/emscripten_api_browser.cpp b/tests/emscripten_api_browser.cpp
new file mode 100644
index 00000000..305265e5
--- /dev/null
+++ b/tests/emscripten_api_browser.cpp
@@ -0,0 +1,88 @@
+#include<stdio.h>
+#include<math.h>
+#include<stdlib.h>
+#include<SDL.h>
+#include<emscripten.h>
+#include<assert.h>
+
+int last = 0;
+
+extern "C" {
+
+bool pre1ed = false;
+bool pre2ed = false;
+void pre1() {
+  assert(!pre1ed);
+  assert(!pre2ed);
+  pre1ed = true;
+}
+void pre2() {
+  assert(pre1ed);
+  assert(!pre2ed);
+  pre2ed = true;
+}
+
+bool fived = false;
+void five() {
+  fived = true;
+  emscripten_resume_main_loop();
+}
+
+void mainey() {
+  static int counter = 0;
+  printf("mainey: %d\n", counter++);
+  if (counter == 20) {
+    emscripten_pause_main_loop();
+    emscripten_async_call(five, 1000);
+  } else if (counter == 22) { // very soon after 20, so without pausing we fail
+    assert(fived);
+    emscripten_push_main_loop_blocker(pre1);
+    emscripten_push_main_loop_blocker(pre2);
+  } else if (counter == 23) {
+    assert(pre1ed);
+    assert(pre2ed);
+    printf("Good!\n");
+    int result = 1;
+    REPORT_RESULT();
+  }
+}
+
+void four() {
+  printf("four!\n");
+  emscripten_set_main_loop(mainey, 0);
+}
+
+void __attribute__((used)) third() {
+  int now = SDL_GetTicks();
+  printf("thard! %d\n", now);
+  assert(fabs(now - last - 1000) < 500);
+  emscripten_async_call(four, -1); // triggers requestAnimationFrame
+}
+
+void second() {
+  int now = SDL_GetTicks();
+  printf("sacond! %d\n", now);
+  assert(fabs(now - last - 500) < 250);
+  last = now;
+  emscripten_async_run_script("_third()", 1000);
+}
+
+}
+
+void never() {
+  int result = 0;
+  REPORT_RESULT();
+}
+
+int main() {
+  SDL_Init(0);
+  last = SDL_GetTicks();
+  printf("frist! %d\n", last);
+
+  atexit(never); // should never be called - it is wrong to exit the runtime orderly if we have async calls!
+
+  emscripten_async_call(second, 500);
+
+  return 1;
+}
+