Use pytest-split to distribute CI tests over multiple runners

.github/workflows/test.yml

@@ -17,6 +17,11 @@ concurrency:
 
 jobs:
   test-windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        pytest-split-group: [1, 2, 3, 4, 5]
+        pytest-split-groups: [5]
     env:
       PYTHONUNBUFFERED: "1"
       FORCE_COLOR: "1"
@@ -34,7 +39,7 @@ jobs:
       - name: Install dev deps
         run: |
           conda activate test
-          mamba install pip pytest-cov pytest-xdist
+          mamba install pip pytest-cov pytest-xdist pytest-split
           python -m pip install -r requirements-dev.txt
 
       - name: install conda-lock
@@ -50,7 +55,7 @@ jobs:
           pushd "${RUNNER_TEMP}"
           set TMPDIR="%RUNNER_TEMP%"
           dir
-          pytest --cov=conda_lock --cov-branch --cov-report=xml --cov-report=term tests
+          pytest --cov=conda_lock --cov-branch --cov-report=xml --cov-report=term --splits ${{ matrix.pytest-split-groups }} --group ${{ matrix.pytest-split-group }} tests
           copy coverage.xml %GITHUB_WORKSPACE%
       - uses: codecov/codecov-action@v3
 
@@ -61,6 +66,18 @@ jobs:
       matrix:
         os: [ ubuntu-latest, macos-latest ]
         python-version: [ "3.8", "3.11" ]
+        pytest-split-group: [1, 2, 3]
+        pytest-split-groups: [2, 3]
+        exclude:
+          - os: ubuntu-latest
+            # Force pytest-split-groups to 2 by excluding 3
+            pytest-split-groups: 3
+          - os: macos-latest
+            # Force pytest-split-groups to 3 by excluding 2
+            pytest-split-groups: 2
+          - os: ubuntu-latest
+            # Don't run the third group on ubuntu
+            pytest-split-group: 3
     defaults:
       run:
         shell: bash -l {0}
@@ -81,7 +98,7 @@ jobs:
       - name: Install dev deps
         run: |
           conda activate test
-          mamba install pip pytest-cov pytest-xdist
+          mamba install pip pytest-cov pytest-xdist pytest-split
           set -x
           echo "${PATH}"
           which pip
@@ -106,7 +123,7 @@ jobs:
           ls -lah
           set -x
           which pytest
-          pytest --cov=conda_lock --cov-branch --cov-report=xml --cov-report=term tests
+          pytest --cov=conda_lock --cov-branch --cov-report=xml --cov-report=term --splits ${{ matrix.pytest-split-group }} --group ${{ matrix.pytest-split-group }} tests
           cp coverage.xml "${GITHUB_WORKSPACE}"
       - uses: codecov/codecov-action@v3
 

.test_durations

@@ -0,0 +1,120 @@
+{
+    "conda_lock/models/test_channel.py::test__detect_used_env_var": 0.0044590262696146965,
+    "conda_lock/models/test_channel.py::test_url_auth_info": 0.01338486629538238,
+    "tests/test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-auth4-# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple]": 0.0027642359491437674,
+    "tests/test_conda_lock.py::test__add_auth_to_line[# pip mypackage @ https://pypi.otherchannel.cloud/simple-auth5-# pip mypackage @ https://pypi.otherchannel.cloud/simple]": 0.0021687184926122427,
+    "tests/test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth2-https://username:password@conda.mychannel.cloud/channel1/mypackage]": 0.0022148219868540764,
+    "tests/test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/channel1/mypackage-auth3-https://username1:password1@conda.mychannel.cloud/channel1/mypackage]": 0.0020119459368288517,
+    "tests/test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth0-https://username:password@conda.mychannel.cloud/mypackage]": 0.0020599619019776583,
+    "tests/test_conda_lock.py::test__add_auth_to_line[https://conda.mychannel.cloud/mypackage-auth1-https://conda.mychannel.cloud/mypackage]": 0.0018740820232778788,
+    "tests/test_conda_lock.py::test__add_auth_to_lockfile[# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://username_a:password_a@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://username_c:password_c@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://username_d:password_d@d.mychannel.cloud/mypackage\\n]": 0.0021428640466183424,
+    "tests/test_conda_lock.py::test__extract_domain[# pip mypackage @ https://pypi.mychannel.cloud/simple-pypi.mychannel.cloud]": 0.004476058064028621,
+    "tests/test_conda_lock.py::test__extract_domain[http://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.00953778624534607,
+    "tests/test_conda_lock.py::test__extract_domain[https://conda.mychannel.cloud/mypackage-conda.mychannel.cloud]": 0.01166083524003625,
+    "tests/test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.004538550041615963,
+    "tests/test_conda_lock.py::test__strip_auth_from_line[# pip mypackage @ https://username1:password1@pypi.mychannel.cloud/simple-# pip mypackage @ https://pypi.mychannel.cloud/simple]": 0.004323852248489857,
+    "tests/test_conda_lock.py::test__strip_auth_from_line[http://conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.0055056612472981215,
+    "tests/test_conda_lock.py::test__strip_auth_from_line[http://user:password@conda.mychannel.cloud/mypackage-http://conda.mychannel.cloud/mypackage]": 0.005796841811388731,
+    "tests/test_conda_lock.py::test__strip_auth_from_line[https://conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.015453723957762122,
+    "tests/test_conda_lock.py::test__strip_auth_from_line[https://user:password@conda.mychannel.cloud/mypackage-https://conda.mychannel.cloud/mypackage]": 0.013227654155343771,
+    "tests/test_conda_lock.py::test__strip_auth_from_lockfile[http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n-http://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.0017164601013064384,
+    "tests/test_conda_lock.py::test__strip_auth_from_lockfile[http://user:password@a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://user:password@c.mychannel.cloud/mypackage\\n# pip mypackage @ http://user:password@d.mychannel.cloud/mypackage\\n-# The following domains require authentication:\\n# - a.mychannel.cloud\\n# - c.mychannel.cloud\\n# - d.mychannel.cloud\\nhttp://a.mychannel.cloud/mypackage\\nhttp://b.mychannel.cloud/mypackage\\nhttp://c.mychannel.cloud/mypackage\\n# pip mypackage @ http://d.mychannel.cloud/mypackage\\n]": 0.0019474257715046406,
+    "tests/test_conda_lock.py::test_aggregate_lock_specs": 1.2763855010271072,
+    "tests/test_conda_lock.py::test_aggregate_lock_specs_invalid_channels": 0.03590670810081065,
+    "tests/test_conda_lock.py::test_aggregate_lock_specs_multiple_platforms": 0.006713381968438625,
+    "tests/test_conda_lock.py::test_aggregate_lock_specs_override_version": 1.6720386389642954,
+    "tests/test_conda_lock.py::test_choose_wheel": 7.891909349011257,
+    "tests/test_conda_lock.py::test_cli_version": 1.0643445942550898,
+    "tests/test_conda_lock.py::test_default_virtual_package_input_hash_stability": 0.005248077679425478,
+    "tests/test_conda_lock.py::test_extract_json_object": 0.0016865991055965424,
+    "tests/test_conda_lock.py::test_fake_conda_env[conda]": 2.4932802789844573,
+    "tests/test_conda_lock.py::test_fake_conda_env[mamba]": 3.1682756498921663,
+    "tests/test_conda_lock.py::test_fake_conda_env[micromamba]": 1.2988834620919079,
+    "tests/test_conda_lock.py::test_install[conda-env]": 140.27129216119647,
+    "tests/test_conda_lock.py::test_install[conda-explicit]": 19.50872055394575,
+    "tests/test_conda_lock.py::test_install[mamba-env]": 19.579558146651834,
+    "tests/test_conda_lock.py::test_install[mamba-explicit]": 9.53389447904192,
+    "tests/test_conda_lock.py::test_install[micromamba-env]": 6.250606240937486,
+    "tests/test_conda_lock.py::test_install[micromamba-explicit]": 9.245201598852873,
+    "tests/test_conda_lock.py::test_lock_poetry_ibis": 42.33643715083599,
+    "tests/test_conda_lock.py::test_parse_env_file_with_filters_defaults": 0.017547639086842537,
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+    "tests/test_conda_lock.py::test_parse_environment_file": 0.017137509072199464,
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+    "tests/test_conda_lock.py::test_parse_flit": 0.006220192881301045,
+    "tests/test_conda_lock.py::test_parse_meta_yaml_file": 0.06765178288333118,
+    "tests/test_conda_lock.py::test_parse_pdm": 7.360471409978345,
+    "tests/test_conda_lock.py::test_parse_pip_requirement[package-thingie1[foo]-parsed0]": 0.002158720977604389,
+    "tests/test_conda_lock.py::test_parse_pip_requirement[package[extra] = 2.1-parsed2]": 0.0019457850139588118,
+    "tests/test_conda_lock.py::test_parse_pip_requirement[package[extra] == 2.1-parsed3]": 0.0023466390557587147,
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+    "tests/test_conda_lock.py::test_parse_pip_requirement[package[extra] >=2.1.*, <4.0-parsed5]": 0.0069599400740116835,
+    "tests/test_conda_lock.py::test_parse_pip_requirement[package[extra] @ https://foo.bar/package.whl#sha1=blerp-parsed1]": 0.0019281471613794565,
+    "tests/test_conda_lock.py::test_parse_pip_requirement[package[extra]===2.1-parsed4]": 0.0021447089966386557,
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+    "tests/test_conda_lock.py::test_parse_poetry_no_pypi": 0.0075933379121124744,
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+}