add kwant.test()

kwant/__init__.py

@@ -23,3 +23,13 @@ except:
     pass
 else:
     __all__.extend(['plotter', 'plot'])
+
+
+def test(verbose=1):
+    from nose.core import run
+    import os.path
+
+    return run(argv=[__file__, os.path.dirname(os.path.abspath(__file__)),
+                     "-s", "--verbosity="+str(verbose)])
+
+test.__test__ = False

setup.py

@@ -324,7 +324,9 @@ def main():
           "quantum transport calculations.",
           license="not to be distributed",
           packages=["kwant", "kwant.graph", "kwant.linalg", "kwant.physics",
-                    "kwant.solvers"],
+                    "kwant.solvers", "kwant.tests", "kwant.graph.tests",
+                    "kwant.linalg.tests", "kwant.physics.tests",
+                    "kwant.solvers.tests"],
           cmdclass={'build': kwant_build,
                     'sdist': kwant_sdist,
                     'build_ext': kwant_build_ext,