Bug 1436037 - [ci] Run mozbase and mozlint python-test tasks on OSX, r=jmaher

Differential Revision: https://phabricator.services.mozilla.com/D14901

--HG--
extra : moz-landing-system : lando

taskcluster/ci/source-test/python.yml

@@ -4,6 +4,7 @@ job-defaults:
     worker-type:
         by-platform:
             linux64.*: aws-provisioner-v1/gecko-t-linux-xlarge
+            macosx64.*: releng-hardware/gecko-t-osx-1010
             windows10-64.*: aws-provisioner-v1/gecko-t-win10-64
     worker:
         by-platform:
@@ -97,6 +98,7 @@ mozbase:
     description: testing/mozbase unit tests
     platform:
         - linux64/opt
+        - macosx64/opt
         - windows10-64/opt
     python-version: [2, 3]
     treeherder:
@@ -126,6 +128,7 @@ mozlint:
     description: python/mozlint unit tests
     platform:
         - linux64/opt
+        - macosx64/opt
         - windows10-64/opt
     python-version: [2]
     treeherder:

taskcluster/taskgraph/transforms/job/python_test.py

@@ -35,10 +35,15 @@ defaults = {
 @run_job_using('generic-worker', 'python-test', schema=python_test_schema, defaults=defaults)
 def configure_python_test(config, job, taskdesc):
     run = job['run']
+    worker = job['worker']
+
+    if worker['os'] == 'macosx' and run['python-version'] == 3:
+        # OSX hosts can't seem to find python 3 on their own
+        run['python-version'] = '/usr/local/bin/python3'
 
     # defer to the mach implementation
     run['mach'] = 'python-test --python {python-version} --subsuite {subsuite}'.format(**run)
     run['using'] = 'mach'
     del run['python-version']
     del run['subsuite']
-    configure_taskdesc_for_run(config, job, taskdesc, job['worker']['implementation'])
+    configure_taskdesc_for_run(config, job, taskdesc, worker['implementation'])

testing/mozbase/mozinstall/tests/manifest.ini

@@ -2,6 +2,8 @@
 subsuite = mozbase
 skip-if = python == 3
 [test_binary.py]
+skip-if = os == "mac"
 [test_install.py]
+skip-if = os == "mac"  # intermittent
 [test_is_installer.py]
 [test_uninstall.py]

testing/mozbase/moztest/moztest/resolve.py

@@ -409,7 +409,7 @@ class TestMetadata(object):
 
         candidate_paths = set()
 
-        if any(self.is_wpt_path(path) for path in paths):
+        if flavor in (None, 'web-platform-tests') and any(self.is_wpt_path(p) for p in paths):
             self.add_wpt_manifest_data()
 
         for path in sorted(paths):

tools/lint/test/python.ini

@@ -3,5 +3,6 @@ subsuite = mozlint
 skip-if = python == 3
 
 [test_eslint.py]
-skip-if = os == "win"  # node not installed on worker
+skip-if = os == "win" || os == "mac"  # node not installed on worker
 [test_flake8.py]
+skip-if = os == "mac"  # pip unable to find 'flake8==3.5.0'