Fix tox.ini to support the latest tox. (#234)

### Description

Fixes `tox.ini` to support the latest `tox`.

Author: ueshin

tox.ini

@@ -4,61 +4,84 @@ envlist = linter, unit
 
 [testenv:linter]
 basepython = python3
-commands = /bin/bash -c '$(which black) --config black.ini --check .'
-           /bin/bash -c '$(which flake8) --select=E,W,F --ignore=E203,W503 --max-line-length=100 .'
-           /bin/bash -c '$(which mypy) --config-file mypy.ini --namespace-packages --explicit-package-bases dbt tests'
-passenv = DBT_* PYTEST_ADDOPTS
+commands =
+  {envpython} -m black --config black.ini --check .
+  {envpython} -m flake8 --select=E,W,F --ignore=E203,W503 --max-line-length=100 .
+  {envpython} -m mypy --config-file mypy.ini --namespace-packages --explicit-package-bases dbt tests
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-     -r{toxinidir}/dev-requirements.txt
-     -r{toxinidir}/requirements.txt
+  -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/requirements.txt
 
 [testenv:black]
 basepython = python3
-commands = /bin/bash -c '$(which black) --config black.ini .'
-passenv = DBT_* PYTEST_ADDOPTS
+commands = {envpython} -m black --config black.ini .
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-     -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/dev-requirements.txt
 
 [testenv:unit]
 basepython = python3
-commands = /bin/bash -c '{envpython} -m pytest -v {posargs} tests/unit'
-passenv = DBT_* PYTEST_ADDOPTS
+commands = {envpython} -m pytest --color=yes -v {posargs} tests/unit
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-    -r{toxinidir}/dev-requirements.txt
-    -r{toxinidir}/requirements.txt
+  -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/requirements.txt
 
 [testenv:integration-databricks-cluster]
 basepython = python3
-commands = /bin/bash -c '{envpython} -m pytest -v --profile databricks_cluster -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-           /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_cluster -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-passenv = DBT_* PYTEST_ADDOPTS
+commands =
+  /bin/bash -c '{envpython} -m pytest -v --profile databricks_cluster -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+  /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_cluster -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-    -r{toxinidir}/dev-requirements.txt
-    -r{toxinidir}/requirements.txt
+  -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/requirements.txt
+allowlist_externals = /bin/bash
 
 [testenv:integration-databricks-uc-cluster]
 basepython = python3
-commands = /bin/bash -c '{envpython} -m pytest -v --profile databricks_uc_cluster -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-           /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_uc_cluster -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-passenv = DBT_* PYTEST_ADDOPTS
+commands =
+  /bin/bash -c '{envpython} -m pytest -v --profile databricks_uc_cluster -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+  /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_uc_cluster -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-    -r{toxinidir}/dev-requirements.txt
-    -r{toxinidir}/requirements.txt
+  -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/requirements.txt
+allowlist_externals = /bin/bash
 
 [testenv:integration-databricks-sql-endpoint]
 basepython = python3
-commands = /bin/bash -c '{envpython} -m pytest -v --profile databricks_sql_endpoint -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-           /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_sql_endpoint -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-passenv = DBT_* PYTEST_ADDOPTS
+commands =
+  /bin/bash -c '{envpython} -m pytest -v --profile databricks_sql_endpoint -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+  /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_sql_endpoint -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-    -r{toxinidir}/dev-requirements.txt
-    -r{toxinidir}/requirements.txt
+  -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/requirements.txt
+allowlist_externals = /bin/bash
 
 [testenv:integration-databricks-uc-sql-endpoint]
 basepython = python3
-commands = /bin/bash -c '{envpython} -m pytest -v --profile databricks_uc_sql_endpoint -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-           /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_uc_sql_endpoint -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
-passenv = DBT_* PYTEST_ADDOPTS
+commands =
+  /bin/bash -c '{envpython} -m pytest -v --profile databricks_uc_sql_endpoint -n4 tests/functional/adapter/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+  /bin/bash -c '{envpython} -m pytest -v -m profile_databricks_uc_sql_endpoint -n4 tests/integration/* {posargs}; ret=$?; [ $ret = 5 ] && exit 0 || exit $ret'
+passenv =
+  DBT_*
+  PYTEST_ADDOPTS
 deps =
-    -r{toxinidir}/dev-requirements.txt
-    -r{toxinidir}/requirements.txt
+  -r{toxinidir}/dev-requirements.txt
+  -r{toxinidir}/requirements.txt
+allowlist_externals = /bin/bash