Use GH Actions & Conda for tests

New tests and code require a substantial number
of requirements like opencv and Qt. Rather than
try to encapsulate that configuration directly
in .travis, we copy the napari-omero strategy
of using conda in GH actions.

.github/workflows/posix.yml

@@ -0,0 +1,47 @@
+name: Build for Linux
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    branches: ["master"]
+
+jobs:
+  test:
+    name: ${{ matrix.platform }} ${{ matrix.python-version }}
+    runs-on: ${{ matrix.platform }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [ubuntu-latest, macos-latest]
+        python-version: [3.6, 3.7, 3.8]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup miniconda
+      - uses: goanpeca/[email protected]
+        with:
+          auto-update-conda: true
+          python-version: ${{ matrix.python-version }}
+          environment-file: environment.yml
+
+      - name: Install Linux dependencies
+        if: matrix.platform == 'ubuntu-latest'
+        run: |
+          sudo apt install libxkbcommon-x11-0
+          /sbin/start-stop-daemon --start --quiet \
+            --pidfile /tmp/custom_xvfb_99.pid --make-pidfile \
+            --background --exec /usr/bin/Xvfb \
+            -- :99 -screen 0 1920x1200x24 -ac +extension GLX
+
+      - name: Install dependencies
+        shell: bash -l {0}
+        run: |
+          python -m pip install --upgrade pip wheel pytest tox .[napari]
+
+      - name: Run pytest
+        shell: bash -l {0}
+        run: pytest

.github/workflows/windows.yml

@@ -27,6 +27,5 @@ jobs:
         shell: bash
         run: >
           export PATH="/c/Python37:/c/Python37/Scripts:$PATH" &&
-          python -m pip install --upgrade pip wheel pytest tox scikit-image
-          .[napari] &&
+          python -m pip install --upgrade pip wheel pytest tox .[napari] &&
           pytest

.travis.yml

@@ -4,15 +4,10 @@ dist: bionic
 language: python
 jobs:
   include:
-    - name: Python36
-      python: "3.6"
-    - name: Python37
-      python: "3.7"
-    - name: Python38
-      python: "3.8"
     - stage: deploy
       python: "3.6"
       if: tag IS present
+      install: skip
       script: skip
       skip_cleanup: true
       deploy:
@@ -22,15 +17,3 @@ jobs:
         distributions: sdist bdist_wheel
         on:
           tags: true
-
-# command to install dependencies
-install:
-  - pip install .[napari]
-  - pip install scikit-image  # only needed for tests
-
-# command to run tests
-script: pytest
-
-cache:
-  directories:
-    - $HOME/.cache/pip

environment.yml

@@ -0,0 +1,26 @@
+#name: z
+channels:
+  - defaults
+  - ome
+  - conda-forge
+dependencies:
+  - pyqt >=5.12.3
+  - napari
+  - flake8
+  - ipython
+  - mypy
+  - omero-py
+  - opencv
+  - pip
+  - py-opencv
+  - pytest
+  - python.app
+  - requests
+  - s3fs
+  - scikit-image
+  - scipy
+  - xarray
+  - zarr >= 2.4.0
+  - pip:
+      - pre-commit
+      - pytest-qt

setup.py

@@ -49,5 +49,5 @@ def read(fname):
         "pytest11": ["napari-conftest = napari.conftest"],
     },
     extras_require={"napari": ["napari"]},
-    tests_require=["pytest", "pytest-capturelog"],
+    tests_require=["pytest"],
 )