Fix python3 tests

debian/control

@@ -5,6 +5,7 @@ Section: python
 Priority: optional
 Build-Depends: debhelper (>= 9),
                dh-python (>= 2.20160609~),
+               locales,
                python-all,
                python-click,
                python-pytest,

debian/rules

@@ -11,3 +11,10 @@ ifeq (,$(findstring nodocs, $(DEB_BUILD_OPTIONS)))
 	PYTHONPATH=. sphinx-build -b html docs $(CURDIR)/debian/python-click-log-doc/usr/share/doc/python-click-log-doc/html
 	dh_sphinxdoc -O--buildsystem=python_distutils
 endif
+
+override_dh_auto_test:
+	mkdir -p debian/tmp/locale/
+	localedef -f UTF-8 -i en_US ./debian/tmp/locale/en_US.UTF-8/
+	export LOCPATH=$(CURDIR)/debian/tmp/locale/ && \
+	export LC_ALL=en_US.UTF-8 && \
+	dh_auto_test