allow adding runDependencies in preRun

2 files changed, 24 insertions, 0 deletions

diff --git a/tests/pre_run_deps.cpp b/tests/pre_run_deps.cpp
new file mode 100644
index 00000000..41c06972
--- /dev/null
+++ b/tests/pre_run_deps.cpp
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <emscripten.h>
+
+int main() {
+  printf("main() called.\n");
+  int result = emscripten_run_script_int("Module.okk");
+  REPORT_RESULT();
+  return 1;
+}
+
diff --git a/tests/runner.py b/tests/runner.py
index f44dc95a..a1a3425a 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -7299,6 +7299,20 @@ elif 'browser' in str(sys.argv):
     def test_cubegeom_color2(self):
       self.btest('cubegeom_color2.c', expected='1121999515')
 
+    def test_pre_run_deps(self):
+      # Adding a dependency in preRun will delay run
+      open(os.path.join(self.get_dir(), 'pre.js'), 'w').write('''
+        Module.preRun = function() {
+          addRunDependency();
+          Module.print('preRun called, added a dependency...');
+          setTimeout(function() {
+            Module.okk = 10;
+            removeRunDependency()
+          }, 2000);
+        };
+      ''')
+      self.btest('pre_run_deps.cpp', expected='10', args=['--pre-js', 'pre.js'])
+
 elif 'benchmark' in str(sys.argv):
   # Benchmarks. Run them with argument |benchmark|. To run a specific test, do
   # |benchmark.test_X|.