add test dependencies

packages/nest/package.py

@@ -76,20 +76,33 @@ class Nest(CMakePackage):
     depends_on('python@2.6:',       when='@2.16:+python', type=('build', 'run'))
     depends_on('python@3.8:',       when='@3:', type=('build', 'run'))
     depends_on('py-numpy@:1.16.99', when='@:2.14.99+python', type=('build', 'run'))
-    depends_on('py-numpy',          when='+python', type=('build', 'run'))
+    depends_on('py-numpy',          when='+python', type=('build', 'run', 'test'))
+    depends_on('py-pandas',         when='@3:', type=('test'))
     depends_on('py-cython@0.19.2:', when='+python', type='build')
-    depends_on('py-nose',           when='+python', type='test')
     depends_on('py-setuptools',     when='+python', type='build')
     depends_on('boost',             when="@2.16:+boost", type='build')
     depends_on('py-setuptools@:44.99.99',     when='@:2.15.99+python', type='build')
 
-    depends_on('mpi', when='+mpi')
-    depends_on('doxygen', type='build')
-    depends_on('gsl', when='+gsl')
+    depends_on('py-nose',           when='@:2.99.99+python', type='test')
+    depends_on('py-pytest',         when='@3.0:', type='test')
+    depends_on('py-pytest-xdist',   when='@3.0:', type='test')
+    depends_on('py-pytest-timeout', when='@3.0:', type='test')
+    depends_on('py-junitparser@2:', type='test')
+    depends_on('py-terminaltales',  when='@3:', type='test')
+    depends_on('py-pycodestyle',    when='@3:', type='test')
+    depends_on('cppcheck',          type='test')
+    depends_on('clang-format@3.6',  when='@:3.1.99', type='test')
+    depends_on('clang-format@9',    when='@3.2:3.3.99', type='test')
+    depends_on('clang-format@13',   when='@3.4:', type='test')
+
+    depends_on('mpi',               when='+mpi')
+    depends_on('py-mpi4py',         when='+python+mpi', type=('run', 'test'))
+    depends_on('doxygen',           type='build')
+    depends_on('gsl',               when='+gsl')
     depends_on('readline')
     depends_on('ncurses')
     depends_on('libtool')
-    depends_on('pkgconfig', type='build')
+    depends_on('pkgconfig',         type='build')
 
     extends('python', when='+python')