Add ClearBreakpoints API

Add a test which actually triggers the mappings and fires up vimspector
with the cpptools debugger.

python3/vimspector/breakpoints.py

@@ -29,10 +29,10 @@ class ProjectBreakpoints( object ):
     # These are the user-entered breakpoints.
     self._line_breakpoints = defaultdict( list )
     self._func_breakpoints = []
+    self._exceptionBreakpoints = None
 
     # FIXME: Remove this. Remove breakpoints nonesense from code.py
     self._breakpoints_handler = None
-    self._exceptionBreakpoints = None
     self._server_capabilities = {}
 
     self._next_sign_id = 1
@@ -92,6 +92,14 @@ class ProjectBreakpoints( object ):
 
     vim.eval( 'setqflist( {} )'.format( json.dumps( qf ) ) )
 
+  def ClearBreakpoints( self ):
+    # These are the user-entered breakpoints.
+    self._line_breakpoints = defaultdict( list )
+    self._func_breakpoints = []
+    self._exceptionBreakpoints = None
+
+    self.UpdateUI()
+
   def ToggleBreakpoint( self ):
     line, column = vim.current.window.cursor
     file_name = vim.current.buffer.name
@@ -211,6 +219,7 @@ class ProjectBreakpoints( object ):
         }
       )
 
+
   def _SetUpExceptionBreakpoints( self ):
     exceptionBreakpointFilters = self._server_capabilities.get(
         'exceptionBreakpointFilters',

python3/vimspector/debug_session.py

@@ -724,5 +724,8 @@ class DebugSession( object ):
   def ToggleBreakpoint( self ):
     return self._breakpoints.ToggleBreakpoint()
 
+  def ClearBreakpoints( self ):
+    return self._breakpoints.ClearBreakpoints()
+
   def AddFunctionBreakpoint( self, function ):
     return self._breakpoints.AddFunctionBreakpoint( function )