setuptools: Support multiple builders

At present, the 'builder' option for the setuptools integration only
supports a single output format, typically HTML, like so:

  [build_sphinx]
  builder = man

There is value in being able to specify multiple format, like so:

  [build_sphinx]
  builder = html man

Make this possible.

Signed-off-by: Stephen Finucane <stephen@that.guru>

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/test_setup_command.py b/tests/test_setup_command.py
index 7554bef5d..97943075f 100644
--- a/tests/test_setup_command.py
+++ b/tests/test_setup_command.py
@@ -64,6 +64,24 @@ def test_build_sphinx(setup_command):
     assert proc.returncode == 0
 
 
+@pytest.mark.setup_command('-b', 'html,man')
+def test_build_sphinx_multiple_builders(setup_command):
+    proc = setup_command.proc
+    out, err = proc.communicate()
+    print(out)
+    print(err)
+    assert proc.returncode == 0
+
+
+@pytest.mark.setup_command('-b', 'html,bar')
+def test_build_sphinx_multiple_invalid_builders(setup_command):
+    proc = setup_command.proc
+    out, err = proc.communicate()
+    print(out)
+    print(err)
+    assert proc.returncode == 1
+
+
 @pytest.fixture
 def nonascii_srcdir(request, setup_command):
     mb_name = u'\u65e5\u672c\u8a9e'