Add Github CI workflow

.github/workflows/ci.yml

@@ -0,0 +1,62 @@
+name: Run Securesystemslib tests
+
+on: [push, pull_request, workflow_dispatch]
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      # Run tests on each OS/Python combination
+      matrix:
+        python-version: [2.7, 3.6, 3.7, 3.8, 3.9]
+        # TODO: Add windows-latest when gpg issues are solved
+        os: [ubuntu-latest, macos-latest]
+        toxenv: [py]
+
+        include:
+          - python-version: 2.7
+            os: ubuntu-latest
+            toxenv: purepy27
+          - python-version: 2.7
+            os: ubuntu-latest
+            toxenv: py27-no-gpg
+          - python-version: 3.8
+            os: ubuntu-latest
+            toxenv: purepy38
+          - python-version: 3.8
+            os: ubuntu-latest
+            toxenv: py38-no-gpg
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout securesystemslib
+        uses: actions/checkout@v2
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Find pip cache dir
+        id: pip-cache
+        run: echo "::set-output name=dir::$(pip cache dir)"
+
+      - name: pip cache
+        uses: actions/cache@v2
+        with:
+          # Use the os dependent pip cache directory found above
+          path: ${{ steps.pip-cache.outputs.dir }}
+          # A match with 'key' counts as cache hit
+          key: ${{ runner.os }}-pip-${{ hashFiles('requirements*.txt') }}
+          # A match with 'restore-keys' is used as fallback
+          restore-keys: ${{ runner.os }}-pip-
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade tox
+
+      - name: Run tox
+        run: tox -e ${{ matrix.toxenv }}
+

MANIFEST.in

@@ -3,7 +3,6 @@ include LICENSE
 
 # Add test config files to show how to run tests
 include tox.ini
-include .travis.yml
 include requirements*.txt
 
 # Include all files under the tests directory (including test data)

README.rst

@@ -1,11 +1,8 @@
 Secure Systems Library
 ----------------------
 
-.. image:: https://travis-ci.com/secure-systems-lab/securesystemslib.svg?branch=master
-   :target: https://travis-ci.com/secure-systems-lab/securesystemslib
-
-.. image:: https://coveralls.io/repos/github/secure-systems-lab/securesystemslib/badge.svg?branch=master
-   :target: https://coveralls.io/github/secure-systems-lab/securesystemslib?branch=master
+.. image:: https://github.com/secure-systems-lab/securesystemslib/workflows/Run%20Securesystemslib%20tests/badge.svg
+   :target: https://github.com/secure-systems-lab/securesystemslib/actions?query=workflow%3A%22Run+TUF+tests%22+branch%3Amaster
 
 .. image:: https://api.dependabot.com/badges/status?host=github&repo=secure-systems-lab/securesystemslib
    :target: https://api.dependabot.com/badges/status?host=github&repo=secure-systems-lab/securesystemslib

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27, py36, py37, py38, py39 purepy27, purepy38
+envlist = py27, py36, py37, py38, py39, purepy27, purepy38, py27-no-gpg, py38-no-gpg
 skipsdist = True
 
 [testenv]
@@ -34,12 +34,14 @@ deps =
 commands =
     python -m tests.check_public_interfaces
 
-# Below test envs require manual removal of gpg on the host system (see
-# .travis.yml) and are excluded from the default tox run
 [testenv:py27-no-gpg]
+setenv =
+    GNUPG = nonexisting-gpg-for-testing
 commands =
     python -m tests.check_public_interfaces_gpg
 
 [testenv:py38-no-gpg]
+setenv =
+    GNUPG = nonexisting-gpg-for-testing
 commands =
     python -m tests.check_public_interfaces_gpg