Add automated CI to run black checker

Author: pwnage101

.github/workflows/ci.yml

@@ -0,0 +1,23 @@
+name: snowflake_timetravel_table Black Checker
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches:
+    - '**'
+
+jobs:
+  check_black:
+    name: Check Black
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v1
+    - name: Setup Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.8
+    - name: Install Tox
+      run: pip install tox
+    - name: Run Black
+      run: tox -e black

Makefile

@@ -15,5 +15,8 @@
 test:
 	tox
 
+check-black:
+	tox -e black
+
 black:
 	black --line-length 120 integration_tests/tests

tox.ini

@@ -1,13 +1,13 @@
 [tox]
 # use skipsdist=True to avoid needing a setup.py, since the thing we are testing is NOT a python package.
 skipsdist = True
-envlist = py38-dbt{018,019}-int, py38-black
+envlist = py38-dbt{018,019}-int
 
 [pytest]
 testpaths =
     integration_tests/tests
 
-[testenv:py38-dbt{018,019}-int]
+[testenv]
 setenv =
     DISPLAY={env:DISPLAY:}
     SNOWFLAKE_TEST_ACCOUNT={env:SNOWFLAKE_TEST_ACCOUNT:}
@@ -31,6 +31,6 @@ commands =
     dbt run  --project-dir integration_tests/run_project --profiles-dir '../test_profile'
     pytest {posargs}
 
-[testenv:py38-black]
+[testenv:black]
 deps = black
 commands = black --line-length 120 --check --diff integration_tests/tests