Add method simulator_check to test/common.py

vunit/ghdl_interface.py

@@ -124,6 +124,13 @@ def determine_backend(cls, prefix):
         print("=============================" + ("=" * 60))
         raise AssertionError("No known GHDL back-end could be detected from running 'ghdl --version'")
 
+    @classmethod
+    def supports_vhpi(cls):
+        """
+        Return if the simulator supports VHPI
+        """
+        return cls.determine_backend(cls.find_prefix_from_path()) != "mcode"
+
     def _has_output_flag(self):
         """
         Returns if backend supports output flag

vunit/simulator_interface.py

@@ -17,7 +17,7 @@
 from vunit.color_printer import NO_COLOR_PRINTER
 
 
-class SimulatorInterface(object):
+class SimulatorInterface(object):  # pylint: disable=too-many-public-methods
     """
     Generic simulator interface
     """
@@ -145,6 +145,13 @@ def has_valid_exit_code():
         """
         return False
 
+    @staticmethod
+    def supports_vhpi():
+        """
+        Return if the simulator supports VHPI
+        """
+        return False
+
     def merge_coverage(self, file_name, args):  # pylint: disable=unused-argument, no-self-use
         """
         Hook for simulator interface to creating coverage reports

vunit/test/common.py

@@ -32,6 +32,16 @@ def simulator_is(*names):
     return SIMULATOR_FACTORY.select_simulator().name in names
 
 
+def simulator_check(func):
+    """
+    Check some method of the selected simulator
+    """
+    simif = SIMULATOR_FACTORY.select_simulator()
+    if simif is None:
+        return False
+    return func(simif)
+
+
 def check_report(report_file, tests=None):
     """
     Check an XML report_file for the exact occurrence of specific test results