add snowflake external oauth sample #1186

	name: TDVT CI
	on: [push]

	jobs:
	test:
	strategy:
	matrix:
	os: [windows-latest, macos-latest, ubuntu-latest]
	runs-on: ${{matrix.os}}

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.9
	uses: actions/[email protected]
	with:
	python-version: 3.9
	- name: Install TDVT
	run: \|
	python -m pip install --upgrade pip
	pip install -e tdvt/
	- name: Run TDVT unit tests
	run: \|
	cd tdvt/test
	python tdvt_test.py -v CommandLineTest ConfigTest DiffTest PrintConfigurationsTest ResultsTest ResultsExceptionTest TestCreatorTest MangleTest

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