TEST: add module to test installed scripts

Module tests whether we can run f2py and return correct version.

Skip this test when running in-place (we don't install f2py in that
case).

Use our own virtualenvs in travis-ci to avoid picking up travis' numpy.

.travis.yml

@@ -28,6 +28,10 @@ before_install:
   - ulimit -a
   - mkdir builds
   - pushd builds
+  # Build into own virtualenv
+  # We therefore control our own environment, avoid travis' numpy
+  - virtualenv --python=python venv
+  - source venv/bin/activate
   - pip install nose
   # pip install coverage
   - python -V

numpy/tests/test_scripts.py

@@ -0,0 +1,65 @@
+""" Test scripts
+
+Test that we can run executable scripts that have been installed with numpy.
+"""
+from __future__ import division, print_function, absolute_import
+
+import os
+from os.path import join as pathjoin, isfile, dirname, basename
+import sys
+from subprocess import Popen, PIPE
+import numpy as np
+from numpy.compat.py3k import basestring, asbytes
+from nose.tools import assert_equal
+from numpy.testing.decorators import skipif
+
+skipif_inplace = skipif(isfile(pathjoin(dirname(np.__file__),  '..', 'setup.py')))
+
+def run_command(cmd, check_code=True):
+    """ Run command sequence `cmd` returning exit code, stdout, stderr
+
+    Parameters
+    ----------
+    cmd : str or sequence
+        string with command name or sequence of strings defining command
+    check_code : {True, False}, optional
+        If True, raise error for non-zero return code
+
+    Returns
+    -------
+    returncode : int
+        return code from execution of `cmd`
+    stdout : bytes (python 3) or str (python 2)
+        stdout from `cmd`
+    stderr : bytes (python 3) or str (python 2)
+        stderr from `cmd`
+
+    Raises
+    ------
+    RuntimeError
+        If `check_code` is True, and return code !=0
+    """
+    cmd = [cmd] if isinstance(cmd, basestring) else list(cmd)
+    if os.name == 'nt':
+        # Quote any arguments with spaces. The quotes delimit the arguments
+        # on Windows, and the arguments might be file paths with spaces.
+        # On Unix the list elements are each separate arguments.
+        cmd = ['"{0}"'.format(c) if ' ' in c else c for c in cmd]
+    proc = Popen(cmd, stdout=PIPE, stderr=PIPE)
+    stdout, stderr = proc.communicate()
+    if proc.poll() == None:
+        proc.terminate()
+    if check_code and proc.returncode != 0:
+        raise RuntimeError('\n'.join(
+            ['Command "{0}" failed with',
+             'stdout', '------', '{1}', '',
+             'stderr', '------', '{2}']).format(cmd, stdout, stderr))
+    return proc.returncode, stdout, stderr
+
+
+@skipif_inplace
+def test_f2py():
+    # test that we can run f2py script
+    f2py_cmd = 'f2py' + basename(sys.executable)[6:]
+    code, stdout, stderr = run_command([f2py_cmd, '-v'])
+    assert_equal(stdout.strip(), asbytes('2'))

tools/travis-test.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 set -ex
 
 # travis boxes give you 1.5 cpus
@@ -120,10 +120,17 @@ fi
 export PYTHON
 export PIP
 if [ -n "$USE_WHEEL" ] && [ $# -eq 0 ]; then
-  $PIP install --upgrade pip
+  # Build wheel
   $PIP install wheel
   $PYTHON setup.py bdist_wheel
-  $PIP install --pre --upgrade --find-links dist numpy
+  # Make another virtualenv to install into
+  virtualenv --python=python venv-for-wheel
+  . venv-for-wheel/bin/activate
+  # Move out of source directory to avoid finding local numpy
+  pushd dist
+  $PIP install --pre --upgrade --find-links . numpy
+  $PIP install nose
+  popd
   run_test
 elif [ "$USE_CHROOT" != "1" ] && [ "$USE_BENTO" != "1" ]; then
   setup_base