text: # Copyright 2016 Alethea Katherine Flowers
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import os
  
  import nox
  
  
  ON_APPVEYOR = os.environ.get("APPVEYOR") == "True"
  
  
  @nox.session(python=["3.5", "3.6", "3.7"])
  def tests(session):
      """Run test suite with pytest."""
      session.install("-r", "requirements-test.txt")
      session.install("-e", ".[tox_to_nox]")
      tests = session.posargs or ["tests/"]
      session.run(
          "py.test", "--cov=nox", "--cov-config", ".coveragerc", "--cov-report=", *tests
      )
      session.notify("cover")
  
  
  @nox.session
  def cover(session):
      """Coverage analysis."""
      session.install("coverage")
      if ON_APPVEYOR:
          fail_under = "--fail-under=99"
      else:
          fail_under = "--fail-under=100"
      session.run("coverage", "report", fail_under, "--show-missing")
      session.run("coverage", "erase")
  
  
  @nox.session(python="3.6")
  def blacken(session):
      """Run black code formater."""
      session.install("black")
      session.run("black", "nox", "tests", "noxfile.py", "setup.py")
  
  
  @nox.session(python="3.6")
  def lint(session):
      """Lint using flake8."""
      session.install("flake8", "flake8-import-order", "black")
      session.run("black", "--check", "nox", "tests", "noxfile.py", "setup.py")
      session.run("flake8", "nox", "tests")
  
  
  @nox.session(python="3.6")
  def docs(session):
      """Build the documentation."""
      session.run("rm", "-rf", "docs/_build")
      session.install("-r", "requirements-test.txt")
      session.install(".")
      session.cd("docs")
      sphinx_args = ["-b", "html", "-W", "-d", "_build/doctrees", ".", "_build/html"]
  
      if "serve" not in session.posargs:
          sphinx_cmd = "sphinx-build"
      else:
          sphinx_cmd = "sphinx-autobuild"
          sphinx_args.insert(0, "--open-browser")
  
      session.run(sphinx_cmd, *sphinx_args)
  