Method test_getExceptionMessage

test/test_core.py:1511–1567

(self)

  @with_all_eh_sjlj
  def test_getExceptionMessage(self):
    self.set_setting('ASSERTIONS')
    self.maybe_closure()
    create_file('main.cpp', '''
      #include <emscripten.h>
      #include <exception>
      #include <stdexcept>
      using namespace std;

      class myexception : public exception {
        virtual const char* what() const throw() { return "My exception happened"; }
      } myex;

      EMSCRIPTEN_KEEPALIVE extern "C" void throw_exc(int x) {
        if (x == 1) {
          throw 1000;
        }
        if (x == 2) {
          throw 'c';
        }
        if (x == 3) {
          throw runtime_error("abc");
        }
        if (x == 4) {
          throw myex;
        }
        if (x == 5) {
          throw "abc";
        }
      }

      int main() {
          EM_ASM({
            for (let i = 1; i < 6; i++){
              try {
                  _throw_exc(i);
              } catch(p) {
                  // Because we are catching and handling the exception in JS, the normal
                  // exception catching C++ code doesn&#x27;t kick in, so we need to make sure we free
                  // the exception, if necessary. By decrementing the refcount we trigger the
                  // free&#x27;ing of the exception.
                  out(getExceptionMessage(p).toString());
                  decrementExceptionRefcount(p);
              }
            }
          });
      }
    ''&#x27;)
    expected = ''&#x27;\
int,
char,
std::runtime_error,abc
myexception,My exception happened
char const*,
''&#x27;

    self.do_runf('main.cpp', expected)