Add core-test ci with Python 3.12 (#1180)

Author: hoxbro

.github/workflows/test.yaml

@@ -58,3 +58,49 @@ jobs:
         run: |
           conda activate test-environment
           codecov
+  core_test_suite:
+    name: Core tests on Python ${{ matrix.python-version }}, ${{ matrix.os }}
+    needs: [pre_commit]
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ['ubuntu-latest']
+        python-version: ['3.12']
+    timeout-minutes: 120
+    defaults:
+      run:
+        shell: bash -el {0}
+    env:
+      DESC: "Python ${{ matrix.python-version }}, ${{ matrix.os }} core tests"
+      PYTHON_VERSION: ${{ matrix.python-version }}
+    steps:
+      # Add back when this works on Python 3.12
+      # - uses: holoviz-dev/holoviz_tasks/install@v0.1a17
+      #   with:
+      #     name: core_test_suite
+      #     python-version: ${{ matrix.python-version }}
+      #     # channel-priority: strict
+      #     channels: pyviz/label/dev,conda-forge,nodefaults
+      #     envs: "-o tests_core -o tests_ci"
+      #     cache: true
+      #     conda-update: true
+      #     id: install
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: "100"
+      - name: Fetch unshallow
+        run: git fetch --prune --tags --unshallow -f
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.12
+      - run: |
+          python -m pip install -ve '.[tests_core]'
+      - name: bokeh sampledata
+        run: |
+          # conda activate test-environment
+          bokeh sampledata
+      - name: doit test_unit
+        run: |
+          # conda activate test-environment
+          pytest hvplot

hvplot/tests/testoperations.py

@@ -11,7 +11,7 @@
 import pytest
 
 from holoviews import Store, render
-from holoviews.element import Image, QuadMesh, ImageStack, Points
+from holoviews.element import Image, QuadMesh, Points
 from holoviews.core.spaces import DynamicMap
 from holoviews.core.overlay import Overlay
 from holoviews.element.chart import Scatter
@@ -204,6 +204,9 @@ def test_datashade_rescale_discrete_levels_default_True(self):
     def test_rasterize_by(self):
         if Version(hv.__version__) < Version('1.18.0a1'):
             raise SkipTest('hv.ImageStack introduced after 1.18.0a1')
+
+        from holoviews.element import ImageStack
+
         expected = 'category'
         plot = self.df.hvplot(x='x', y='y', by=expected, rasterize=True, dynamic=False)
         assert isinstance(plot, ImageStack)

setup.py

@@ -150,6 +150,7 @@ def get_setup_version(reponame):
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Operating System :: OS Independent",
         "Intended Audience :: Science/Research",
         "Intended Audience :: Developers",

tox.ini

@@ -3,7 +3,7 @@
 
 [tox]
 #          python version             test group                    extra envs  extra commands
-envlist = {py38,py39,py310,py311}-{simple,unit,examples,all}-{default}-{dev,pkg}
+envlist = {py38,py39,py310,py311,py312}-{simple,unit,examples,all}-{default}-{dev,pkg}
 
 [_simple]
 description = Run simple tests