Switch to Python 3.7 and Alpine 3.10

It also allows building docs as doc8 is broken due to latest
OpenStack's upper-constraints.

pylint is updated to 2.3.1 (lastest py3.7 version)

It disables perm as umask is currently false on lf-virtual1.

Change-Id: I8568eeafa44c5dba72e206c532c1f50e3ad547f2
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

13 files changed, 30 insertions, 28 deletions

diff --git a/.travis.yml b/.travis.yml
index bfc81b26..e9015ff7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,9 +5,9 @@ language: generic
 
 before_script:
   - sudo apt-get -y install qemu-user-static
-  - sudo add-apt-repository -y ppa:jonathonf/python-3.6
+  - sudo add-apt-repository -y ppa:deadsnakes/ppa
   - sudo apt-get update
-  - sudo apt-get install python3.6 python3.6-dev
+  - sudo apt-get install python3.7 python3.7-dev
   - sudo pip install tox
   - sudo -E docker login -u="${DOCKER_USERNAME}" -p="${DOCKER_PASSWORD}"
   - (cd .. && git clone https://github.com/estesp/manifest-tool)
@@ -18,7 +18,7 @@ jobs:
   include:
     - stage: run unit tests
       script: >
-        tox -e docs,pep8,pylint,yamllint,ansiblelint,bashate,py27,py36,cover
+        tox -e docs,pep8,pylint,yamllint,ansiblelint,bashate,py27,py37,cover
     - stage: build xtesting images
       script: sudo -E bash build.sh
       env:
diff --git a/build.sh b/build.sh
index 92e475c4..3b4c8b5d 100644
--- a/build.sh
+++ b/build.sh
@@ -19,10 +19,10 @@ build_opts=(--pull=true --no-cache --force-rm=true)
 for arch in ${arch};do
     if [[ ${arch} == arm64 ]]; then
         find . -name Dockerfile -exec sed -i \
-            -e "s|alpine:3.9|multiarch/alpine:arm64-v3.9|g" {} +
+            -e "s|alpine:3.10|multiarch/alpine:arm64-v3.10|g" {} +
     elif [[ ${arch} == arm ]]; then
         find . -name Dockerfile -exec sed -i \
-            -e "s|alpine:3.9|multiarch/alpine:armhf-v3.9|g" {} +
+            -e "s|alpine:3.10|multiarch/alpine:armhf-v3.10|g" {} +
     fi
     (cd docker &&   docker build "${build_opts[@]}" \
         -t "${repo}/${image}:${arch}-${tag}" .)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index e6d9537b..44ccf72d 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.9
+FROM alpine:3.10
 
 ARG BRANCH=master
 ARG OPENSTACK_TAG=master
diff --git a/test-requirements.txt b/test-requirements.txt
index 08f08077..ef2ef201 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@ coverage!=4.4 # Apache-2.0
 mock # BSD
 nose # LGPL
 flake8<2.6.0,>=2.5.4 # MIT
-pylint==1.4.5 # GPLv2
+pylint # GPLv2
 sphinx!=1.6.6,!=1.6.7,<2.0.0;python_version=='2.7' # BSD
 sphinx!=1.6.6,!=1.6.7;python_version>='3.4' # BSD
 sphinx-rtd-theme
diff --git a/tox.ini b/tox.ini
index 6dcf9fc4..1904b6e4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = docs,pep8,pylint,yamllint,ansiblelint,bashate,py27,perm,cover
+envlist = docs,pep8,pylint,yamllint,ansiblelint,bashate,py27,py37,cover
 skipsdist = True
 
 [testenv]
@@ -19,24 +19,24 @@ commands = nosetests --with-xunit \
   xtesting/tests/unit
 
 [testenv:docs]
-basepython = python2.7
+basepython = python3.7
 commands =
   doc8 README.rst api --ignore-path api/build
   sphinx-build -W -b html api/ api/build
 
 [testenv:pep8]
-basepython = python2.7
+basepython = python3.7
 commands = flake8
 
 [testenv:pylint]
-basepython = python2.7
+basepython = python3.7
 whitelist_externals = bash
 commands =
   pylint --min-similarity-lines=10 \
     --disable=locally-disabled --ignore-imports=y --reports=n xtesting
 
 [testenv:yamllint]
-basepython = python2.7
+basepython = python3.7
 files =
   .travis.yml
   ansible
@@ -45,7 +45,7 @@ commands =
   yamllint -s {[testenv:yamllint]files}
 
 [testenv:ansiblelint]
-basepython = python2.7
+basepython = python3.7
 commands =
   ansible-lint ansible/site.yml
 
@@ -53,17 +53,17 @@ commands =
 commands = nosetests xtesting/tests/unit
 
 [testenv:bashate]
-basepython = python2.7
+basepython = python3.7
 files =
   build.sh
 commands = bashate {[testenv:bashate]files}
 
 [testenv:bandit]
-basepython = python2.7
+basepython = python3.7
 commands = bandit -r xtesting -x tests -n 5 -ll -s B602
 
 [testenv:cover]
-basepython = python2.7
+basepython = python3.7
 dirs =
   xtesting/tests/unit/ci
   xtesting/tests/unit/core
@@ -75,7 +75,7 @@ commands = nosetests --with-coverage --cover-tests \
   --cover-min-percentage 100 {[testenv:cover]dirs}
 
 [testenv:perm]
-basepython = python2.7
+basepython = python3.7
 whitelist_externals = bash
 path=. -not -path './.tox/*' -not -path './.git/*' -not -path './doc/reveal.js/*'
 commands =
diff --git a/upper-constraints.txt b/upper-constraints.txt
index 920bb47f..bcf55ebd 100644
--- a/upper-constraints.txt
+++ b/upper-constraints.txt
@@ -1,3 +1,5 @@
 robotframework===3.1.1
 bandit===1.1.0
 behave===1.2.6
+pylint===1.9.5;python_version=='2.7'
+pylint===2.3.1;python_version=='3.7'
diff --git a/xtesting/ci/run_tests.py b/xtesting/ci/run_tests.py
index 94bf2787..5e2b49e5 100644
--- a/xtesting/ci/run_tests.py
+++ b/xtesting/ci/run_tests.py
@@ -46,10 +46,9 @@ class Result(enum.Enum):
 
 class BlockingTestFailed(Exception):
     """Exception when the blocking test fails"""
-    pass
 
 
-class RunTestsParser(object):
+class RunTestsParser():
     """Parser to run tests"""
     # pylint: disable=too-few-public-methods
 
@@ -78,7 +77,7 @@ class RunTestsParser(object):
         return vars(self.parser.parse_args(argv))
 
 
-class Runner(object):
+class Runner():
     """Runner class"""
 
     def __init__(self):
diff --git a/xtesting/ci/tier_builder.py b/xtesting/ci/tier_builder.py
index b0050b13..27afc7d1 100644
--- a/xtesting/ci/tier_builder.py
+++ b/xtesting/ci/tier_builder.py
@@ -16,7 +16,7 @@ from xtesting.ci import tier_handler
 from xtesting.utils import env
 
 
-class TierBuilder(object):
+class TierBuilder():
     # pylint: disable=missing-docstring
 
     def __init__(self, testcases_file):
diff --git a/xtesting/ci/tier_handler.py b/xtesting/ci/tier_handler.py
index 4b74e37c..8359d91c 100644
--- a/xtesting/ci/tier_handler.py
+++ b/xtesting/ci/tier_handler.py
@@ -34,7 +34,7 @@ def split_text(text, max_len):
     return lines
 
 
-class Tier(object):
+class Tier():
 
     def __init__(self, name, order, description=""):
         self.tests_array = []
@@ -96,7 +96,7 @@ class Tier(object):
         return msg.get_string()
 
 
-class TestCase(object):
+class TestCase():
 
     def __init__(self, name, enabled, skipped, criteria, blocking,
                  description="", project=""):
diff --git a/xtesting/core/testcase.py b/xtesting/core/testcase.py
index c548a2a8..c89e4c88 100644
--- a/xtesting/core/testcase.py
+++ b/xtesting/core/testcase.py
@@ -27,7 +27,7 @@ __author__ = "Cedric Ollivier <cedric.ollivier@orange.com>"
 
 
 @six.add_metaclass(abc.ABCMeta)
-class TestCase(object):
+class TestCase():
     # pylint: disable=too-many-instance-attributes
     """Base model for single test case."""
 
diff --git a/xtesting/tests/unit/core/test_behaveframework.py b/xtesting/tests/unit/core/test_behaveframework.py
index f18cac03..70ca9738 100644
--- a/xtesting/tests/unit/core/test_behaveframework.py
+++ b/xtesting/tests/unit/core/test_behaveframework.py
@@ -66,11 +66,10 @@ class ParseResultTesting(unittest.TestCase):
         data = [{'status': 'passed'}, {'status': 'passed'}]
         self._test_result(data, 100)
 
-    def test_count(self):
+    @mock.patch('six.moves.builtins.open', mock.mock_open())
+    def test_count(self, *args):  # pylint: disable=unused-argument
         self._response.extend([{'status': 'failed'}, {'status': 'skipped'}])
-        with mock.patch('six.moves.builtins.open', mock.mock_open()), \
-                mock.patch('json.load', mock.Mock(
-                    return_value=self._response)):
+        with mock.patch('json.load', mock.Mock(return_value=self._response)):
             self.test.parse_results()
             self.assertEqual(self.test.details['pass_tests'], 1)
             self.assertEqual(self.test.details['fail_tests'], 1)
diff --git a/xtesting/tests/unit/core/test_feature.py b/xtesting/tests/unit/core/test_feature.py
index 30678798..785f6e16 100644
--- a/xtesting/tests/unit/core/test_feature.py
+++ b/xtesting/tests/unit/core/test_feature.py
@@ -29,6 +29,7 @@ class FakeTestCase(feature.Feature):
 class AbstractFeatureTesting(unittest.TestCase):
 
     def test_run_unimplemented(self):
+        # pylint: disable=abstract-class-instantiated
         with self.assertRaises(TypeError):
             feature.Feature(case_name="feature", project_name="xtesting")
 
diff --git a/xtesting/tests/unit/core/test_testcase.py b/xtesting/tests/unit/core/test_testcase.py
index 51ea6f35..fc612973 100644
--- a/xtesting/tests/unit/core/test_testcase.py
+++ b/xtesting/tests/unit/core/test_testcase.py
@@ -35,6 +35,7 @@ class FakeTestCase(testcase.TestCase):
 class AbstractTestCaseTesting(unittest.TestCase):
 
     def test_run_unimplemented(self):
+        # pylint: disable=abstract-class-instantiated
         with self.assertRaises(TypeError):
             testcase.TestCase(case_name="base", project_name="xtesting")