Change CI from travis to github action (#23)

Author: fehiepsi

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  unit:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install .[test]
+          pip freeze
+      - name: Lint with flake8
+        run: |
+          make lint
+      - name: Run unit tests
+        run: |
+          pytest -vs --tb=short test

.travis.yml

@@ -16,7 +16,10 @@
 
 @pytest.mark.filterwarnings("ignore", category=UserWarning)
 @pytest.mark.parametrize('model', MODELS)
-@pytest.mark.parametrize('backend', ['pyro', 'numpy'])
+@pytest.mark.parametrize('backend', [
+    "pyro",
+    pytest.param('numpy', marks=[pytest.mark.xfail(
+        reason="Signature of numpyro MCMC does not match, numpyro/issues/1321")])])
 def test_mcmc_interface(model, backend):
     pytest.importorskip(PACKAGE_NAME[backend])
     with pyro_backend(backend), handlers.seed(rng_seed=20):

test/test_dispatch.py

@@ -6,7 +6,14 @@
 from pyroapi import pyro_backend
 from pyroapi.tests import *  # noqa F401
 
-pytestmark = pytest.mark.filterwarnings("ignore::numpyro.compat.util.UnsupportedAPIWarning")
+pytestmark = pytest.mark.filterwarnings(
+    "ignore::numpyro.compat.util.UnsupportedAPIWarning",
+    "ignore:.*loss does not support models with discrete latent variables:UserWarning",
+    # The behavior of using // with negative numbers is changed in PyTorch.
+    # But we don't need to worry about it. This UserWarning will be removed in
+    # a future version of PyTorch.
+    "ignore:.*floordiv.* is deprecated, and its behavior will change in a future version:UserWarning",
+)
 
 PACKAGE_NAME = {
     "pyro": "pyro",