feat(py-nestml): add unit tests

packages/py-nestml/package.py

@@ -36,4 +36,11 @@ class PyNestml(PythonPackage):
     depends_on('py-astropy', type=('build', 'run'))
     depends_on('py-odetoolbox@2.4:', type=('build', 'run'))
     depends_on('nest', type=('build', 'run'))
+    depends_on('cmake', type=('run', 'test'))
     depends_on('py-pytest', type='test')
+
+    @run_after('install')
+    @on_package_attributes(run_tests=True)
+    def install_test(self):
+        pytest = which('pytest')
+        pytest('tests', '-o', 'norecursedirs="*"')