dev-python/elementpath: Enable tests

Signed-off-by: Michał Górny <mgorny@gentoo.org>

dev-python/elementpath/elementpath-1.3.1.ebuild

@@ -14,7 +14,23 @@ SRC_URI="mirror://pypi/${PN::1}/${PN}/${P}.tar.gz"
 LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE=""
+IUSE="test"
+RESTRICT="!test? ( test )"
 
 BDEPEND="
-	dev-python/setuptools[${PYTHON_USEDEP}]"
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	test? (
+		dev-python/lxml[${PYTHON_USEDEP}]
+		dev-python/xmlschema[${PYTHON_USEDEP}]
+	)"
+
+distutils_enable_tests unittest
+
+src_prepare() {
+	distutils-r1_src_prepare
+
+	# this test fails depending on system locale + requires some random
+	# locales being installed
+	sed -e 's:test_compare_strings_function:_&:' \
+		-i tests/test_xpath2_parser.py || die
+}