Fix conftest.py compatibility with pytest 4.3

.ci/appveyor.yml

@@ -27,7 +27,7 @@ install:
   - "python --version"
   - "python -c \"import struct; print(struct.calcsize('P') * 8)\""
   # Build data files
-  - "pip install --upgrade pytest==3.3.2 pytest-cov==2.5.1 codecov freezegun==0.3.11"
+  - "pip install --upgrade pytest==4.3.1 pytest-cov==2.6.1 codecov freezegun==0.3.11"
   - "pip install --editable ."
   - "python setup.py import_cldr"
 

.travis.yml

@@ -38,7 +38,7 @@ matrix:
 install:
   - bash .ci/deps.${TRAVIS_OS_NAME}.sh
   - pip install --upgrade pip
-  - pip install --upgrade $CDECIMAL pytest==3.3.2 pytest-cov==2.5.1 freezegun==0.3.11
+  - pip install --upgrade $CDECIMAL pytest==4.3.1 pytest-cov==2.6.1 freezegun==0.3.11
   - pip install --editable .
 
 script:

tests/conftest.py

@@ -10,6 +10,9 @@ def os_environ(monkeypatch):
 
 
 def pytest_generate_tests(metafunc):
-    if hasattr(metafunc.function, "all_locales"):
-        from babel.localedata import locale_identifiers
-        metafunc.parametrize("locale", list(locale_identifiers()))
+    if hasattr(metafunc.function, "pytestmark"):
+        for mark in metafunc.function.pytestmark:
+            if mark.name == "all_locales":
+                from babel.localedata import locale_identifiers
+                metafunc.parametrize("locale", list(locale_identifiers()))
+                break

tox.ini

@@ -3,8 +3,8 @@ envlist = py27, pypy, py34, py35, py36, py37, pypy3, py27-cdecimal
 
 [testenv]
 deps =
-    pytest==3.3.2
-    pytest-cov==2.5.1
+    pytest==4.3.1
+    pytest-cov==2.6.1
     cdecimal: m3-cdecimal
     freezegun==0.3.11
 whitelist_externals = make