dev: add GitHub CI test run

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: ci
+
+on:
+  pull_request:
+    branches: [ master ]
+  push:
+    branches:
+      - master
+      - develop
+
+permissions:
+  contents: write
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Display Python version
+        run: python -c "import sys; print(sys.version)"
+      - name: Install test dependencies
+        run: |
+          pip install .
+          pip install -r requirements-test.txt
+      - name: Test with pytest
+        run: pytest --cov=pptx --cov-report term-missing tests
+      - name: Acceptance tests with behave
+          behave --stop

src/pptx/parts/coreprops.py

@@ -1,8 +1,8 @@
-# encoding: utf-8
-
 """Core properties part, corresponds to ``/docProps/core.xml`` part in package."""
 
-from datetime import datetime
+from __future__ import annotations
+
+import datetime as dt
 
 from pptx.opc.constants import CONTENT_TYPE as CT
 from pptx.opc.package import XmlPart
@@ -27,7 +27,7 @@ def default(cls, package):
         core_props.title = "PowerPoint Presentation"
         core_props.last_modified_by = "python-pptx"
         core_props.revision = 1
-        core_props.modified = datetime.utcnow()
+        core_props.modified = dt.datetime.now(dt.timezone.utc).replace(tzinfo=None)
         return core_props
 
     @property

tests/parts/test_coreprops.py

@@ -1,10 +1,10 @@
-# encoding: utf-8
-
 """Unit-test suite for `pptx.parts.coreprops` module."""
 
-import pytest
+from __future__ import annotations
 
-from datetime import datetime, timedelta
+import datetime as dt
+
+import pytest
 
 from pptx.opc.constants import CONTENT_TYPE as CT
 from pptx.oxml.coreprops import CT_CoreProperties
@@ -55,16 +55,18 @@ def it_can_construct_a_default_core_props(self):
         assert core_props.revision == 1
         # core_props.modified only stores time with seconds resolution, so
         # comparison needs to be a little loose (within two seconds)
-        modified_timedelta = datetime.utcnow() - core_props.modified
-        max_expected_timedelta = timedelta(seconds=2)
+        modified_timedelta = (
+            dt.datetime.now(dt.timezone.utc).replace(tzinfo=None) - core_props.modified
+        )
+        max_expected_timedelta = dt.timedelta(seconds=2)
         assert modified_timedelta < max_expected_timedelta
 
     # fixtures -------------------------------------------------------
 
     @pytest.fixture(
         params=[
-            ("created", datetime(2012, 11, 17, 16, 37, 40)),
-            ("last_printed", datetime(2014, 6, 4, 4, 28)),
+            ("created", dt.datetime(2012, 11, 17, 16, 37, 40)),
+            ("last_printed", dt.datetime(2014, 6, 4, 4, 28)),
             ("modified", None),
         ]
     )
@@ -77,21 +79,21 @@ def date_prop_get_fixture(self, request, core_properties):
             (
                 "created",
                 "dcterms:created",
-                datetime(2001, 2, 3, 4, 5),
+                dt.datetime(2001, 2, 3, 4, 5),
                 "2001-02-03T04:05:00Z",
                 ' xsi:type="dcterms:W3CDTF"',
             ),
             (
                 "last_printed",
                 "cp:lastPrinted",
-                datetime(2014, 6, 4, 4),
+                dt.datetime(2014, 6, 4, 4),
                 "2014-06-04T04:00:00Z",
                 "",
             ),
             (
                 "modified",
                 "dcterms:modified",
-                datetime(2005, 4, 3, 2, 1),
+                dt.datetime(2005, 4, 3, 2, 1),
                 "2005-04-03T02:01:00Z",
                 ' xsi:type="dcterms:W3CDTF"',
             ),
@@ -145,9 +147,7 @@ def str_prop_set_fixture(self, request):
         expected_xml = self.coreProperties(tagname, value)
         return core_properties, prop_name, value, expected_xml
 
-    @pytest.fixture(
-        params=[("42", 42), (None, 0), ("foobar", 0), ("-17", 0), ("32.7", 0)]
-    )
+    @pytest.fixture(params=[("42", 42), (None, 0), ("foobar", 0), ("-17", 0), ("32.7", 0)])
     def revision_get_fixture(self, request):
         str_val, expected_revision = request.param
         tagname = "" if str_val is None else "cp:revision"