Migrate unit and integration tests from TravisCI to GitHub Actions

.github/actions/install-icepyx/action.yml

@@ -0,0 +1,19 @@
+name: 'Install icepyx'
+description: 'Install icepyx and dev dependencies'
+
+inputs:
+  python-version:
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - uses: "actions/setup-python@v5"
+      with:
+        python-version: "${{ inputs.python-version }}"
+
+    - name: "Install package and test dependencies"
+      shell: "bash"
+      run: |
+        python -m pip install .
+        python -m pip install -r requirements-dev.txt

.github/workflows/integration_test.yml

@@ -0,0 +1,40 @@
+name: "Integration test"
+# NOTE: We're just running the tests that require earthdata login here; we
+#       don't distinguish between unit and integration tests yet.
+
+on:
+  pull_request:
+  push:
+    branches:
+      - "main"
+      - "development"
+
+
+jobs:
+  test:
+    name: "Test"
+    if: "github.repository == 'icesat2py/icepyx'"
+    runs-on: "ubuntu-latest"
+
+    steps:
+      - uses: "actions/checkout@v4"
+        with:
+          fetch-depth: 0
+
+      - uses: "./.github/actions/install-icepyx"
+        with:
+          python-version: "3.12"
+
+      - name: "Run tests"
+        env:
+          EARTHDATA_USERNAME: "${{ secrets.EARTHDATA_USERNAME }}"
+          EARTHDATA_PASSWORD: "${{ secrets.EARTHDATA_PASSWORD }}"
+        run: |
+          pytest icepyx/ --verbose --cov app \
+            icepyx/tests/test_behind_NSIDC_API_login.py \
+            icepyx/tests/test_auth.py
+
+      - name: "Upload coverage report"
+        uses: "codecov/[email protected]"
+        with:
+          token: "${{ secrets.CODECOV_TOKEN }}"

.github/workflows/unit_test.yml

@@ -0,0 +1,39 @@
+name: "Unit test"
+# NOTE: We're just skipping the tests requiring earthdata login here; we don't
+#       distinguish yet between unit and integration tests.
+
+on:
+  pull_request:
+  push:
+    branches:
+      - "main"
+      - "development"
+
+
+jobs:
+  test:
+    runs-on: "ubuntu-latest"
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.12"] #NOTE: min and max Python versions supported by icepyx
+
+    steps:
+      - uses: "actions/checkout@v4"
+        with:
+          fetch-depth: 0
+
+      - uses: "./.github/actions/install-icepyx"
+        with:
+          python-version: "${{ matrix.python-version }}"
+
+      - name: "Run tests"
+        run: |
+          pytest icepyx/ --verbose --cov app \
+            --ignore=icepyx/tests/test_behind_NSIDC_API_login.py \
+            --ignore=icepyx/tests/test_auth.py
+
+      - name: "Upload coverage report"
+        uses: "codecov/[email protected]"
+        with:
+          token: "${{ secrets.CODECOV_TOKEN }}"