Test the petl executable

petl/test/test_executable.py

@@ -0,0 +1,10 @@
+from __future__ import print_function, division, absolute_import
+
+import subprocess
+
+def test_executable():
+    result = subprocess.run("""
+        (echo foo,bar ; echo a,b; echo c,d) |
+        petl 'fromcsv().cut("foo").head(1).tocsv()'
+    """, shell=True, check=True, capture_output=True)
+    assert result.stdout == b'foo\r\na\r\n'