# coding=utf-8
# Copyright 2015 Pants project contributors (see CONTRIBUTORS.md).
# Licensed under the Apache License, Version 2.0 (see LICENSE).

from __future__ import (absolute_import, division, generators, nested_scopes, print_function,
                        unicode_literals, with_statement)

from textwrap import dedent

from pants.backend.core.tasks.list_owners import ListOwners
from pants.backend.python.targets.python_library import PythonLibrary
from pants.base.exceptions import TaskError
from pants.build_graph.build_file_aliases import BuildFileAliases
from pants_test.tasks.task_test_base import ConsoleTaskTestBase


class ListOwnersTest(ConsoleTaskTestBase):

  @classmethod
  def task_type(cls):
    return ListOwners

  @property
  def alias_groups(self):
    return BuildFileAliases(targets={'python_library': PythonLibrary})

  def setUp(self):
    super(ListOwnersTest, self).setUp()

    def add_to_build_file(path, name, *sources):
      all_sources = ["'{}'".format(source) for source in list(sources)]
      self.add_to_build_file(path, dedent("""
        python_library(name='{name}',
          sources=[{all_sources}]
          )
        """.format(name=name, all_sources=','.join(all_sources))))

    add_to_build_file('a', 'b', 'b.txt')
    add_to_build_file('a/c', 'd', 'd.txt')
    add_to_build_file('a/c', 'd2', 'd.txt')
    add_to_build_file('a/c', 'e', 'e.txt', 'f.txt', 'g.txt')
    add_to_build_file('a', 'c', 'c/c.txt')
    add_to_build_file('a', 'h', 'c/h.txt')
    add_to_build_file('a/c', 'h', 'h.txt')

  def test_no_targets(self):
    self.assert_console_output(passthru_args=['a/a.txt'])

  def test_one_target(self):
    self.assert_console_output('a:b', passthru_args=['a/b.txt'])

  def test_multiple_targets(self):
    self.assert_console_output('a/c:d', 'a/c:d2', passthru_args=['a/c/d.txt'])

  def test_target_in_parent_directory(self):
    self.assert_console_output('a:c', passthru_args=['a/c/c.txt'])

  def test_multiple_targets_one_in_parent_directory(self):
    self.assert_console_output('a:h', 'a/c:h', passthru_args=['a/c/h.txt'])

  def test_target_with_multiple_sources(self):
    self.assert_console_output('a/c:e', passthru_args=['a/c/e.txt'])

  def test_no_sources(self):
    self.assert_console_raises(TaskError, passthru_args=[])

  def test_too_many_sources(self):
    """In future this will support multiple passthru_args, but not yet."""
    self.assert_console_raises(TaskError, passthru_args=['a/a.txt', 'a/b.txt'])
