`python -m pyrepl.completing_reader` fails

[blueyed]

Traceback (most recent call last):
  File "/usr/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "…/src/pyrepl/pyrepl/completing_reader.py", line 286, in <module>
    test()
  File "…/src/pyrepl/pyrepl/completing_reader.py", line 276, in test
    reader = TestReader()
TypeError: __init__() missing 1 required positional argument: 'console'

The following patch fixes it (based on

pyrepl/pyrepl/historical_reader.py

Lines 301 to 303 in b55cc6d

	def test():
	from pyrepl.unix_console import UnixConsole
	reader = HistoricalReader(UnixConsole())

):

diff --git i/pyrepl/completing_reader.py w/pyrepl/completing_reader.py
index 6039688..1e456cc 100644
--- i/pyrepl/completing_reader.py
+++ w/pyrepl/completing_reader.py
@@ -265,13 +265,15 @@ def get_completions(self, stem):
 
 
 def test():
+    from pyrepl.unix_console import UnixConsole
+
     class TestReader(CompletingReader):
         def get_completions(self, stem):
             return [s for l in self.history
                     for s in l.split()
                     if s and s.startswith(stem)]
 
-    reader = TestReader()
+    reader = TestReader(UnixConsole())
     reader.ps1 = "c**> "
     reader.ps2 = "c/*> "
     reader.ps3 = "c|*> "

But then using e.g. Up crashes:

% python -m pyrepl.completing_reader
c**> Traceback (most recent call last):
  File "/usr/lib/python3.9/runpy.py", line 197, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.9/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "…/src/pyrepl/pyrepl/completing_reader.py", line 286, in <module>
    test()
  File "…/src/pyrepl/pyrepl/completing_reader.py", line 281, in test
    while reader.readline():
  File "…/src/pyrepl/pyrepl/reader.py", line 605, in readline
    self.handle1()
  File "…/src/pyrepl/pyrepl/reader.py", line 588, in handle1
    self.do_cmd(cmd)
  File "…/src/pyrepl/pyrepl/reader.py", line 535, in do_cmd
    cmd.do()
  File "…/src/pyrepl/pyrepl/commands.py", line 210, in do
    if r.historyi > 0:
AttributeError: 'TestReader' object has no attribute 'historyi'

Not sure how useful (the test/__main__ in) completing_reader.py is in the end though..