Merge pull request #1015 from plotly/946-testing-entrypoint

🔇 remove the warning as it might confuse non dash usage

dash/testing/plugin.py

@@ -1,11 +1,9 @@
 # pylint: disable=missing-docstring,redefined-outer-name
-import warnings
+import pytest
 from .consts import SELENIUM_GRID_DEFAULT
 
 
 try:
-    import pytest
-
     from dash.testing.application_runners import (
         ThreadedRunner,
         ProcessRunner,
@@ -14,17 +12,15 @@
     from dash.testing.browser import Browser
     from dash.testing.composite import DashComposite, DashRComposite
 except ImportError:
-    warnings.warn("run `pip install dash[testing]` if you need dash.testing")
-
-WEBDRIVERS = {"Chrome", "Firefox"}
+    pass
 
 
 def pytest_addoption(parser):
     dash = parser.getgroup("Dash", "Dash Integration Tests")
 
     dash.addoption(
         "--webdriver",
-        choices=tuple(WEBDRIVERS),
+        choices=("Chrome", "Firefox"),
         default="Chrome",
         help="Name of the selenium driver to use",
     )
@@ -51,8 +47,8 @@ def pytest_addoption(parser):
     dash.addoption(
         "--percy-assets",
         action="store",
-        default='tests/assets',
-        help="configure how Percy will discover your app's assets"
+        default="tests/assets",
+        help="configure how Percy will discover your app's assets",
     )
 
     dash.addoption(

setup.py

@@ -26,6 +26,7 @@ def read_req_file(req_type):
     long_description=io.open("README.md", encoding="utf-8").read(),
     long_description_content_type="text/markdown",
     install_requires=read_req_file("install"),
+    python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*",
     extras_require={
         "dev": read_req_file("dev"),
         "testing": read_req_file("testing"),