def test_get_callback(self): write("Callback test: changing PV must be updated\n") global NEWVALS mypv = PV(pvnames.updating_pv1) NEWVALS = [] def onChanges(pvname=None, value=None, char_value=None, **kw): write('PV %s %s, %s Changed!\n' % (pvname, repr(value), char_value)) NEWVALS.append(repr(value)) mypv.add_callback(onChanges) write('Added a callback. Now wait for changes...\n') t0 = time.time() while time.time() - t0 < 3: time.sleep(1.e-4) write(' saw %i changes.\n' % len(NEWVALS)) assert len(NEWVALS) > 3 mypv.clear_callbacks()
def test_waveform_callback_with_count_arg(self): values = [] wf = PV(pvnames.char_arr_pv, count=32) def onChanges(pvname=None, value=None, char_value=None, **kw): write( 'PV %s %s, %s Changed!\n' % (pvname, repr(value), char_value)) values.append( value) wf.add_callback(onChanges) write('Added a callback. Now wait for changes...\n') t0 = time.time() while time.time() - t0 < 3: time.sleep(1.e-4) if len(values)>0: break self.failUnless(len(values) > 0) self.assertEquals(len(values[0]),32) wf.clear_callbacks()