fetch_dem: added check if file exist already 4 #219

	name: Test TopoPyScale

	on: [push]

	jobs:
	build-linux:
	if: "contains(github.event.commits[0].message, '[trigger test]')"
	runs-on: ubuntu-latest
	defaults:
	run:
	shell: bash -el {0}
	strategy:
	max-parallel: 5

	steps:
	- uses: actions/checkout@v3
	- name: Set up Python 3.9
	uses: actions/setup-python@v3
	with:
	python-version: '3.9'
	- name: Add conda to system path
	run: \|
	# $CONDA is an environment variable pointing to the root of the miniconda directory
	echo $CONDA/bin >> $GITHUB_PATH
	- name: Install dependencies
	run: \|
	conda install mamba -n base -c conda-forge
	mamba env update --file environment.yml --name base
	- name: Install TopoPyscale main development branch
	run: \|
	pip install -e .
	- name: Lint with flake8
	run: \|
	conda install flake8
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Run TopoPyScale example
	run: \|
	git clone https://github.com/ArcticSnow/TopoPyScale_examples.git
	cd TopoPyScale_examples/ex1_norway_finse/
	python pipeline_test.py

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