Get rid of YAML dependency (partly, still left in tests)

closes gh-90

Makefile

@@ -1,5 +1,5 @@
 test:
-	python setup.py test
+	pytest
 coverage:
 	python -m coverage run -p --source=. setup.py test
 cov-html:

requirements.txt

@@ -1,2 +1 @@
 msgpack-python>=0.4.0
-pyyaml>=3.10

setup.py

@@ -38,11 +38,11 @@
 
 # Test runner
 # python setup.py test
-try:
-    from tests.setup_command import test
-    cmdclass["test"] = test
-except ImportError:
-    pass
+# try:
+#     from tests.setup_command import test
+#     cmdclass["test"] = test
+# except ImportError:
+#     pass
 
 
 def read(*parts):
@@ -83,6 +83,5 @@ def find_version(*file_paths):
     command_options=command_options,
     install_requires=[
         'msgpack-python>=0.4',
-        'PyYAML>=3.10',
     ]
 )

tarantool/response.py

@@ -3,7 +3,7 @@
 
 import collections
 
-import yaml
+import json
 import msgpack
 
 from tarantool.const import (
@@ -221,12 +221,17 @@ def __str__(self):
         :rtype: str or None
         '''
         if self.return_code:
-            return yaml.dump({
+            return json.dumps({
                 'error': {
                     'code': self.strerror[0],
                     'reason': self.return_message
                 }
-            })
-        return yaml.dump(self._data)
+            }, sort_keys = True, indent = 4)
+        output = []
+        for tpl in self._data:
+            output.extend(("- ", json.dumps(tpl), "\n"))
+        if len(output) > 0:
+            output.pop()
+        return ''.join(output)
 
     __repr__ = __str__

tests/setup_command.py

@@ -5,7 +5,6 @@
 import unittest
 import setuptools
 
-
 from glob import glob
 
 class test(setuptools.Command):
@@ -22,9 +21,7 @@ def run(self):
         '''
         Find all tests in test/tarantool/ and run them
         '''
-        #root = os.path.dirname(os.path.dirname(__file__))
-        #sys.path.insert(0, root)
-
+
         tests = unittest.defaultTestLoader.discover('tests')
         test_runner = unittest.TextTestRunner(verbosity = 2)
         test_runner.run(tests)

tests/suites/test_dml.py

@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 
-import yaml
 import unittest
 import tarantool
 
@@ -61,7 +60,7 @@ def test_00_02_fill_space(self):
                     [i, i%5, 'tuple_'+str(i)]
             )
     def test_00_03_answer_repr(self):
-        repr_str = """- [1, 1, tuple_1]\n"""
+        repr_str = """- [1, 1, "tuple_1"]"""
         self.assertEqual(repr(self.con.select('space_1', 1)), repr_str)
 
     def test_02_select(self):

tox.ini

@@ -7,8 +7,8 @@
 envlist = py27, py36, pypy
 
 [testenv]
-commands = python setup.py test
+commands = pytest
 deps =
     pyyaml>=3.10
     msgpack-python>=0.4.0
-    six
+    pytest>=3.0.0