src/test/py/bazel/bazel_workspace_test.py

# pylint: disable=g-bad-file-header
# Copyright 2017 The Bazel Authors. All rights reserved.
#
# 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 unittest
from src.test.py.bazel import test_base


class BazelWorkspaceTest(test_base.TestBase):

  def testWorkspaceDotBazelFileInMainRepo(self):
    workspace_dot_bazel = self.ScratchFile("WORKSPACE.bazel")
    self.ScratchFile("BUILD", [
        "py_binary(",
        "  name = 'bin',",
        "  srcs = ['bin.py'],",
        ")",
    ])
    self.ScratchFile("bin.py")
    exit_code, _, stderr = self.RunBazel(["build", "//:bin"])
    self.AssertExitCode(exit_code, 0, stderr)

    # If WORKSPACE.bazel is deleted and no WORKSPACE exists,
    # the build should fail.
    os.remove(workspace_dot_bazel)
    exit_code, _, stderr = self.RunBazel(["build", "//:bin"])
    self.AssertExitCode(exit_code, 2, stderr)

  def testWorkspaceDotBazelFileWithExternalRepo(self):
    self.ScratchDir("A")
    self.ScratchFile("A/WORKSPACE.bazel")
    self.ScratchFile("A/BUILD", [
        "py_library(",
        "  name = 'lib',",
        "  srcs = ['lib.py'],",
        "  visibility = ['//visibility:public'],",
        ")",
    ])
    self.ScratchFile("A/lib.py")
    work_dir = self.ScratchDir("B")
    # Test WORKSPACE.bazel takes priority over WORKSPACE
    self.ScratchFile("B/WORKSPACE")
    workspace_dot_bazel = self.ScratchFile(
        "B/WORKSPACE.bazel", ["local_repository(name = 'A', path='../A')"])
    self.ScratchFile("B/bin.py")
    self.ScratchFile("B/BUILD", [
        "py_binary(",
        "  name = 'bin',",
        "  srcs = ['bin.py'],",
        "  deps = ['@A//:lib'],",
        ")",
    ])
    exit_code, _, stderr = self.RunBazel(args=["build", ":bin"], cwd=work_dir)
    self.AssertExitCode(exit_code, 0, stderr)

    # Test WORKSPACE takes effect after deleting WORKSPACE.bazel
    os.remove(workspace_dot_bazel)
    exit_code, _, stderr = self.RunBazel(args=["build", ":bin"], cwd=work_dir)
    self.AssertExitCode(exit_code, 1, stderr)
    self.assertIn("no such package '@A//'", "".join(stderr))

    # Test a WORKSPACE.bazel directory won't confuse Bazel
    self.ScratchFile("B/WORKSPACE",
                     ["local_repository(name = 'A', path='../A')"])
    self.ScratchDir("B/WORKSPACE.bazel")
    exit_code, _, stderr = self.RunBazel(args=["build", ":bin"], cwd=work_dir)
    self.AssertExitCode(exit_code, 0, stderr)


if __name__ == "__main__":
  unittest.main()