Fix grid encoding #59

	name: Testing

	on:
	push:
	branches: [ main ]
	pull_request:

	jobs:
	build:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	python-version: [ 3.9, '3.10', 3.11, 3.12 ]
	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Display Python version
	run: python -c "import sys; print(sys.version)"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install --upgrade setuptools
	python -m pip install -r ci/requirements.txt -r ci/test_requirements.txt

	- name: Install gempakIO
	run: \|
	python -m pip install .

	- name: Test with pytest
	run: \|
	python -m pytest --cov-report json --cov src/gempakio tests

	- name: Upload coverage artifact
	uses: actions/upload-artifact@v4
	with:
	name: pypi-${{ matrix.python-version }}-${{ runner.os }}
	path: coverage.json
	retention-days: 1

	codecov:
	name: Codecov Upload
	runs-on: ubuntu-latest
	needs: build
	timeout-minutes: 2
	steps:
	- name: Checkout source
	uses: actions/checkout@v4

	- name: Download coverage artifacts
	uses: actions/download-artifact@v4

	- name: Upload coverage reports to Codecov
	uses: codecov/codecov-action@v4
	with:
	name: ${{ github.workflow }}
	fail_ci_if_error: true
	token: ${{ secrets.CODECOV_TOKEN }}

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