src/test/java/com/google/devtools/build/lib/packages/util/BazelMockPythonSupport.java

// Copyright 2018 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.

package com.google.devtools.build.lib.packages.util;

import com.google.devtools.build.lib.testutil.TestConstants;
import java.io.IOException;

/** Mock python support in Bazel. */
public class BazelMockPythonSupport extends MockPythonSupport {

  public static final BazelMockPythonSupport INSTANCE = new BazelMockPythonSupport();

  private static void addTool(MockToolsConfig config, String toolRelativePath) throws IOException {
    config.create(
        TestConstants.TOOLS_REPOSITORY_SCRATCH + toolRelativePath,
        ResourceLoader.readFromResources(TestConstants.BAZEL_REPO_PATH + toolRelativePath));
  }

  @Override
  public void setup(MockToolsConfig config) throws IOException {
    addTool(config, "tools/python/python_version.bzl");
    addTool(config, "tools/python/srcs_version.bzl");

    config.create(
        TestConstants.TOOLS_REPOSITORY_SCRATCH + "tools/python/BUILD",
        "package(default_visibility=['//visibility:public'])",
        "load(':python_version.bzl', 'define_python_version_flag')",
        "define_python_version_flag(",
        "    name = 'python_version',",
        ")",
        "config_setting(",
        "    name = 'PY2',",
        "    flag_values = {':python_version': 'PY2'},",
        ")",
        "config_setting(",
        "    name = 'PY3',",
        "    flag_values = {':python_version': 'PY3'},",
        ")",
        "exports_files(['precompile.py'])",
        "sh_binary(name='2to3', srcs=['2to3.sh'])");
  }
}