Add upstream-dev CI (#51)

Fixes #50

Author: dcherian

.github/workflows/ci.yaml

@@ -52,3 +52,34 @@ jobs:
           env_vars: OS,PYTHON
           name: codecov-umbrella
           fail_ci_if_error: false
+
+  upstream-dev:
+    name: upstream-dev
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Cache conda
+      uses: actions/cache@v1
+      env:
+        # Increase this value to reset cache if ci/upstream-dev-env.yml has not changed
+        CACHE_NUMBER: 0
+      with:
+        path: ~/conda_pkgs_dir
+        key: ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-${{ hashFiles('ci/upstream-dev-env.yml') }}
+    - uses: goanpeca/setup-miniconda@v1
+      with:
+        activate-environment: cf_xarray_test # Defined in ci/upstream-dev-env.yml
+        auto-update-conda: false
+        python-version: 3.8
+        environment-file: ci/upstream-dev-env.yml
+        use-only-tar-bz2: true # IMPORTANT: This needs to be set for caching to work properly!
+    - name: Set up conda environment
+      shell: bash -l {0}
+      run: |
+        python -m pip install -e .
+        conda list
+
+    - name: Run Tests
+      shell: bash -l {0}
+      run: |
+        pytest

ci/upstream-dev-env.yml

@@ -0,0 +1,11 @@
+name: cf_xarray_test
+channels:
+  - conda-forge
+dependencies:
+  - pytest-cov
+  - pytest
+  - dask
+  - matplotlib
+  - netcdf4
+  - pip:
+    - git+https://github.com/pydata/xarray