dev-python/constantly: Enable tests

dev-python/constantly/Manifest

@@ -1 +1,2 @@
+DIST constantly-15.1.0.gh.tar.gz 40635 BLAKE2B d400336901f7df7b1535a0e46fe092a2542546964ea144014210e8be3807aabfe8e8370e94f426061a0c3a6257ee66a6ceb963b159717def7e047405368d910e SHA512 eeaa74552fe8e01c40566ac3c8b3d41085f800863ac516e30fe1242f40d3401e4e872279149776f29d3ba78a7a16337a794ad26230efab4dd1847d42bffa81ce
 DIST constantly-15.1.0.tar.gz 21465 BLAKE2B fc3781e521f3a9988567c437e456e2f8215b8d61115e076d4f9fc52926125540f59bad457413105422d31184506bf7fd3fa38711dae8a8057b38941f2c5584bb SHA512 ccc6f41b0bd552d2bb5346cc9d64cd7b91a59dd30e0cf66b01e82f7e0e079c01c34bc6c66b69c5fee9d2eed35ae5455258d309e66278d708d5f576ddf2e00ac3

dev-python/constantly/constantly-15.1.0-r1.ebuild

@@ -0,0 +1,27 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+PYTHON_COMPAT=( python2_7 python3_{4,5,6} )
+
+inherit distutils-r1
+
+DESCRIPTION="Symbolic constants in Python"
+HOMEPAGE="https://github.com/twisted/constantly https://pypi.python.org/pypi/constantly"
+SRC_URI="https://github.com/twisted/constantly/archive/${PV}.tar.gz -> ${P}.gh.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86"
+IUSE="test"
+
+RDEPEND=""
+DEPEND="
+	${RDEPEND}
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	test? ( dev-python/twisted[${PYTHON_USEDEP}] )
+"
+
+python_test() {
+	esetup.py test
+}