Add test for pinfo with magics

IPython/core/tests/test_oinspect.py

@@ -28,6 +28,7 b' from IPython.core.magic import (Magics, magics_class, line_magic,'
                                 register_line_cell_magic)
 from IPython.external.decorator import decorator
 from IPython.testing.decorators import skipif
+from IPython.testing.tools import AssertPrints
 from IPython.utils.path import compress_user
 from IPython.utils import py3compat
 
@@ -47,7 +48,7 b' ip = get_ipython()'
 # defined, if any code is inserted above, the following line will need to be
 # updated.  Do NOT insert any whitespace between the next line and the function
 # definition below.
-THIS_LINE_NUMBER = 50  # Put here the actual number of this line
+THIS_LINE_NUMBER = 51  # Put here the actual number of this line
 def test_find_source_lines():
     nt.assert_equal(oinspect.find_source_lines(test_find_source_lines), 
                     THIS_LINE_NUMBER+1)
@@ -372,3 +373,10 b' def test_pinfo_nonascii():'
     from . import nonascii2
     ip.user_ns['nonascii2'] = nonascii2
     ip._inspect('pinfo', 'nonascii2', detail_level=1)
+
+def test_pinfo_magic():
+    with AssertPrints('Docstring:'):
+        ip._inspect('pinfo', 'lsmagic', detail_level=0)
+
+    with AssertPrints('Source:'):
+        ip._inspect('pinfo', 'lsmagic', detail_level=1)