Move tmpdir creation into separate fixture

Since `.config.load()` was changed to not touch conf files by default
(without explicitly setting `touch_if_dne: bool`), this ensures both the
global module value is set and the `brokers.toml` file exists before
every test.

tests/conftest.py

@@ -5,7 +5,6 @@ import os
 from pathlib import Path
 
 import pytest
-import pytest_trio
 import tractor
 from piker import (
     config,
@@ -149,19 +148,49 @@ async def _open_test_pikerd(
 
 
 @pytest.fixture
-def open_test_pikerd(
+def tmpconfdir(
-    request: pytest.FixtureRequest,
     tmp_path: Path,
-    loglevel: str,
+) -> Path:
-):
+    '''
+    Ensure the `brokers.toml` file for the test run exists
+    since we changed it to not touch files by default.
+
+    Here we override the default (in the user dir) and
+    set the global module var the same as we do inside
+    the `tmpconfdir` fixture.
+
+    '''
     tmpconfdir: Path = tmp_path / '_testing'
     tmpconfdir.mkdir()
-    tmpconfdir_str: str = str(tmpconfdir)
 
+    # touch the `brokers.toml` file since it won't
+    # exist in the tmp test dir by default!
     # override config dir in the root actor (aka
     # this top level testing process).
     from piker import config
-    config._config_dir = tmpconfdir
+    config._config_dir: Path = tmpconfdir
+    conf, path = config.load(
+        touch_if_dne=True,
+    )
+
+    return tmpconfdir
+
+    # NOTE: the `tmp_dir` fixture will wipe any files older then 3 test
+    # sessions by default:
+    # https://docs.pytest.org/en/6.2.x/tmpdir.html#the-default-base-temporary-directory
+    # BUT, if we wanted to always wipe conf dir and all contained files,
+    # rmtree(str(tmp_path))
+
+
+@pytest.fixture
+def open_test_pikerd(
+    request: pytest.FixtureRequest,
+    tmp_path: Path,
+    tmpconfdir: Path,
+    loglevel: str,
+):
+
+    tmpconfdir_str: str = str(tmpconfdir)
 
     # NOTE: on linux the tmp config dir is generally located at:
     # /tmp/pytest-of-<username>/pytest-<run#>/test_<current_test_name>/
@@ -199,12 +228,6 @@ def open_test_pikerd(
         debug_mode=debug_mode,
     )
 
-    # NOTE: the `tmp_dir` fixture will wipe any files older then 3 test
-    # sessions by default:
-    # https://docs.pytest.org/en/6.2.x/tmpdir.html#the-default-base-temporary-directory
-    # BUT, if we wanted to always wipe conf dir and all contained files,
-    # rmtree(str(tmp_path))
-
     # TODO: teardown checks such as,
     # - no leaked subprocs or shm buffers
     # - all requested container service are torn down

tests/test_feeds.py

@@ -7,8 +7,8 @@ from pprint import pprint
 from typing import AsyncContextManager
 
 import pytest
-# import tractor
 import trio
+
 from piker.data import (
     ShmArray,
     open_feed,
@@ -37,7 +37,7 @@ def test_multi_fqsn_feed(
     open_test_pikerd: AsyncContextManager,
     fqmes: set[str],
     loglevel: str,
-    ci_env: bool
+    ci_env: bool,
 ):
     '''
     Start a real-time data feed for provided fqme and pull
@@ -103,7 +103,6 @@ def test_multi_fqsn_feed(
                         for fqme, quote in quotes.items():
                             cntr[fqme] += 1
 
-                            # await tractor.breakpoint()
                             flume = feed.flumes[fqme]
                             ohlcv: ShmArray = flume.rt_shm
                             hist_ohlcv: ShmArray = flume.hist_shm