Add Condition class

[nadzhou]

Closes #xxxx

• Tests added / passed
• Passes pre-commit run --all-files

Closes #2007 since other classes have been implemented. Happy to get feedback on this.

[github-actions]

Unit Test Results

See test report for an extended history of previous test failures. This is useful for diagnosing flaky tests.

    18 files   -      9      18 suites   - 9   4h 29m 17s ⏱️ - 5h 21m 7s
 3 165 tests  -    947   3 009 ✅  -    997    155 💤 +   51  1 ❌  - 1 
25 119 runs   - 26 397  23 970 ✅  - 25 360  1 145 💤  - 1 039  4 ❌ +2 

For more details on these failures, see this check.

Results for commit 34f5cb4. ± Comparison against base commit c26f4ca.

This pull request removes 952 and adds 5 tests. Note that renamed tests count towards both.

distributed.cli.tests.test_dask_worker ‑ test_listen_address_ipv6[tcp://[::1]:---nanny]
distributed.cli.tests.test_dask_worker ‑ test_listen_address_ipv6[tcp://[::1]:---no-nanny]
distributed.tests.test_config ‑ test_basic_config_does_not_override_default_logging
distributed.tests.test_config ‑ test_default_logging_does_not_override_basic_config
distributed.tests.test_config ‑ test_deprecations_on_env_variables
distributed.tests.test_config ‑ test_deprecations_on_set[args0-kwargs0]
distributed.tests.test_config ‑ test_deprecations_on_set[args1-kwargs1]
distributed.tests.test_config ‑ test_deprecations_on_set[args2-kwargs2]
distributed.tests.test_config ‑ test_deprecations_on_yaml[allowed-failures]
distributed.tests.test_config ‑ test_deprecations_on_yaml[allowed_failures]
…

distributed.cli.tests.test_dask_worker.test_listen_address_ipv6[tcp:..[ ‑ 1]:---nanny]
distributed.cli.tests.test_dask_worker.test_listen_address_ipv6[tcp:..[ ‑ 1]:---no-nanny]
distributed.tests.test_condition ‑ test_condition_acquire_release
distributed.tests.test_condition ‑ test_condition_context_manager
distributed.tests.test_condition ‑ test_condition_wait_notify

This pull request removes 18 skipped tests and adds 2 skipped tests. Note that renamed tests count towards both.

distributed.cli.tests.test_dask_worker ‑ test_listen_address_ipv6[tcp://[::1]:---nanny]
distributed.cli.tests.test_dask_worker ‑ test_listen_address_ipv6[tcp://[::1]:---no-nanny]
distributed.tests.test_config ‑ test_uvloop_event_loop
distributed.tests.test_counter ‑ test_digest[None-<lambda>]
distributed.tests.test_dask_collections ‑ test_sparse_arrays
distributed.tests.test_gc ‑ test_gc_diagnosis_rss_win
distributed.tests.test_metrics ‑ test_monotonic
distributed.tests.test_preload ‑ test_client_preload_click
distributed.tests.test_preload ‑ test_client_preload_text
distributed.tests.test_profile ‑ test_basic_low_level
…

distributed.cli.tests.test_dask_worker.test_listen_address_ipv6[tcp:..[ ‑ 1]:---nanny]
distributed.cli.tests.test_dask_worker.test_listen_address_ipv6[tcp:..[ ‑ 1]:---no-nanny]

This pull request skips 67 tests.

distributed.cli.tests.test_dask_scheduler ‑ test_dashboard_allowlist
distributed.cli.tests.test_dask_scheduler ‑ test_signal_handling[15]
distributed.cli.tests.test_dask_scheduler ‑ test_signal_handling[2]
distributed.cli.tests.test_dask_scheduler ‑ test_signal_handling[Signals.SIGINT]
distributed.cli.tests.test_dask_scheduler ‑ test_signal_handling[Signals.SIGTERM]
distributed.cli.tests.test_dask_scheduler ‑ test_single_executable_deprecated
distributed.cli.tests.test_dask_spec ‑ test_signal_handling_scheduler[15]
distributed.cli.tests.test_dask_spec ‑ test_signal_handling_scheduler[2]
distributed.cli.tests.test_dask_spec ‑ test_signal_handling_scheduler[Signals.SIGINT]
distributed.cli.tests.test_dask_spec ‑ test_signal_handling_scheduler[Signals.SIGTERM]
…

♻️ This comment has been updated with latest results.