enh: modified checkspecs to write input spec tests

Author: satra

tools/checkspecs.py

@@ -190,11 +190,44 @@ def test_specs(self, uri):
                     warnings.simplefilter("ignore")
                     classinst = sys.modules[uri].__dict__[c]
             except Exception as inst:
-                print inst
                 continue
 
             if not issubclass(classinst, BaseInterface):
                 continue
+            #print uri, c, uri_short
+            testdir = os.path.join(*(uri.split('.')[:-1] + ['tests']))
+            if not os.path.exists(testdir):
+                os.makedirs(testdir)
+                #print testdir
+            testfile = os.path.join(testdir, 'test_auto_%s.py' % c)
+
+            with open(testfile, 'wt') as fp:
+                cmd = ['# AUTO-GENERATED by tools/checkspecs.py - DO NOT EDIT',
+                       'from nipype.testing import assert_equal',
+                       'from %s import %s' % (uri, c),
+                       'def test_%s():' % c]
+                input_fields = ''
+                for traitname, trait in classinst.input_spec().traits(transient=None).items():
+                    input_fields += '%s=dict(' % traitname
+                    for key, value in trait.__dict__.items():
+                        if key in in_built or key == 'desc':
+                            continue
+                        if isinstance(value, basestring):
+                            quote = "'"
+                            if "'" in value:
+                                quote = '"'
+                            input_fields += "%s=%s%s%s,\n    " % (key, quote,
+                                                                  value, quote)
+                        else:
+                            input_fields += "%s=%s,\n    " % (key, value)
+                    input_fields += '),\n    '
+                cmd += ['    input_map = dict(%s)' % input_fields]
+                cmd += ['    inputs = %s.input_spec()' % c]
+                cmd += ["""
+    for key, metadata in input_map.items():
+        for metakey, value in metadata.items():
+            yield assert_equal, getattr(inputs.traits()[key], metakey), value"""]
+                fp.writelines('\n'.join(cmd))
 
             for traitname, trait in classinst.input_spec().traits(transient=None).items():
                 for key in trait.__dict__: