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      1 # -*- coding: utf-8 -*-
      2 # Copyright 2013 Google Inc. All Rights Reserved.
      3 #
      4 # Licensed under the Apache License, Version 2.0 (the "License");
      5 # you may not use this file except in compliance with the License.
      6 # You may obtain a copy of the License at
      7 #
      8 #     http://www.apache.org/licenses/LICENSE-2.0
      9 #
     10 # Unless required by applicable law or agreed to in writing, software
     11 # distributed under the License is distributed on an "AS IS" BASIS,
     12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 # See the License for the specific language governing permissions and
     14 # limitations under the License.
     15 """Tests for cat command."""
     16 
     17 from __future__ import absolute_import
     18 
     19 import gslib.tests.testcase as testcase
     20 from gslib.tests.util import ObjectToURI as suri
     21 from gslib.tests.util import RUN_S3_TESTS
     22 
     23 
     24 class TestCat(testcase.GsUtilIntegrationTestCase):
     25   """Integration tests for cat command."""
     26 
     27   def test_cat_range(self):
     28     """Tests cat command with various range arguments."""
     29     key_uri = self.CreateObject(contents='0123456789')
     30     # Test various invalid ranges.
     31     stderr = self.RunGsUtil(['cat', '-r -', suri(key_uri)],
     32                             return_stderr=True, expected_status=1)
     33     self.assertIn('Invalid range', stderr)
     34     stderr = self.RunGsUtil(['cat', '-r a-b', suri(key_uri)],
     35                             return_stderr=True, expected_status=1)
     36     self.assertIn('Invalid range', stderr)
     37     stderr = self.RunGsUtil(['cat', '-r 1-2-3', suri(key_uri)],
     38                             return_stderr=True, expected_status=1)
     39     self.assertIn('Invalid range', stderr)
     40     stderr = self.RunGsUtil(['cat', '-r 1.7-3', suri(key_uri)],
     41                             return_stderr=True, expected_status=1)
     42     self.assertIn('Invalid range', stderr)
     43 
     44     # Test various valid ranges.
     45     stdout = self.RunGsUtil(['cat', '-r 1-3', suri(key_uri)],
     46                             return_stdout=True)
     47     self.assertEqual('123', stdout)
     48     stdout = self.RunGsUtil(['cat', '-r 8-', suri(key_uri)],
     49                             return_stdout=True)
     50     self.assertEqual('89', stdout)
     51     stdout = self.RunGsUtil(['cat', '-r 0-0', suri(key_uri)],
     52                             return_stdout=True)
     53     self.assertEqual('0', stdout)
     54     stdout = self.RunGsUtil(['cat', '-r -3', suri(key_uri)],
     55                             return_stdout=True)
     56     self.assertEqual('789', stdout)
     57 
     58   def test_cat_version(self):
     59     """Tests cat command on versioned objects."""
     60     bucket_uri = self.CreateVersionedBucket()
     61     # Create 2 versions of an object.
     62     uri1 = self.CreateObject(bucket_uri=bucket_uri, contents='data1')
     63     uri2 = self.CreateObject(bucket_uri=bucket_uri,
     64                              object_name=uri1.object_name, contents='data2')
     65     stdout = self.RunGsUtil(['cat', suri(uri1)], return_stdout=True)
     66     # Last version written should be live.
     67     self.assertEqual('data2', stdout)
     68     # Using either version-specific URI should work.
     69     stdout = self.RunGsUtil(['cat', uri1.version_specific_uri],
     70                             return_stdout=True)
     71     self.assertEqual('data1', stdout)
     72     stdout = self.RunGsUtil(['cat', uri2.version_specific_uri],
     73                             return_stdout=True)
     74     self.assertEqual('data2', stdout)
     75     if RUN_S3_TESTS:
     76       # S3 GETs of invalid versions return 400s.
     77       # Also, appending between 1 and 3 characters to the version_id can
     78       # result in a success (200) response from the server.
     79       stderr = self.RunGsUtil(['cat', uri2.version_specific_uri + '23456'],
     80                               return_stderr=True, expected_status=1)
     81       self.assertIn('BadRequestException: 400', stderr)
     82     else:
     83       # Attempting to cat invalid version should result in an error.
     84       stderr = self.RunGsUtil(['cat', uri2.version_specific_uri + '23'],
     85                               return_stderr=True, expected_status=1)
     86       self.assertIn('No URLs matched', stderr)
     87 
     88   def test_cat_multi_arg(self):
     89     """Tests cat command with multiple arguments."""
     90     bucket_uri = self.CreateBucket()
     91     data1 = '0123456789'
     92     data2 = 'abcdefghij'
     93     obj_uri1 = self.CreateObject(bucket_uri=bucket_uri, contents=data1)
     94     obj_uri2 = self.CreateObject(bucket_uri=bucket_uri, contents=data2)
     95     stdout, stderr = self.RunGsUtil(
     96         ['cat', suri(obj_uri1), suri(bucket_uri) + 'nonexistent'],
     97         return_stdout=True, return_stderr=True, expected_status=1)
     98     # First object should print, second should produce an exception.
     99     self.assertIn(data1, stdout)
    100     self.assertIn('NotFoundException', stderr)
    101 
    102     stdout, stderr = self.RunGsUtil(
    103         ['cat', suri(bucket_uri) + 'nonexistent', suri(obj_uri1)],
    104         return_stdout=True, return_stderr=True, expected_status=1)
    105 
    106     # If first object is invalid, exception should halt output immediately.
    107     self.assertNotIn(data1, stdout)
    108     self.assertIn('NotFoundException', stderr)
    109 
    110     # Two valid objects should both print successfully.
    111     stdout = self.RunGsUtil(['cat', suri(obj_uri1), suri(obj_uri2)],
    112                             return_stdout=True)
    113     self.assertIn(data1 + data2, stdout)
    114