!squash more test_builder

tests/workspace/test_builder.py

@@ -141,6 +141,10 @@ def f_check_again():
     assert p.pane_current_path == pane_path
 
 
+class AssertCallbackProtocol(t.Protocol):
+    def __call__(self, cmd:str, hist: str) -> bool:
+        ...
+
 @pytest.mark.skip(
     reason="""
 Test needs to be rewritten, assertion not reliable across platforms
@@ -182,7 +186,7 @@ def assertIsMissing(cmd, hist):
         buffer_name = "test"
         sent_cmd = None
 
-        def f():
+        def f(p: Pane, buffer_name:str, assertCase: AssertCallbackProtocol) -> bool:
             # from v0.7.4 libtmux session.cmd adds target -t self.id by default
             # show-buffer doesn't accept -t, use global cmd.
 
@@ -198,7 +202,9 @@ def f():
 
             return assertCase(sent_cmd, history_cmd)
 
-        assert retry_until(f), f"Unknown sent command: [{sent_cmd}] in {assertCase}"
+        _f = functools.partial(f, p=p, buffer_name=buffer_name, assertCase=assertCase)
+
+        assert retry_until(_f), f"Unknown sent command: [{sent_cmd}] in {assertCase}"
 
 
 def test_session_options(session):