improve support for master version

Author: tony

libtmux/common.py

@@ -405,6 +405,9 @@ def _is_executable_file_or_link(exe):
 def get_version():
     """Return tmux version.
 
+    If tmux is built from git master, the version returned will be the latest
+    version appended with -master, e.g. ``2.4-master``.
+
     :returns: tmux version
     :rtype: :class:`distutils.version.LooseVersion`
     """
@@ -423,7 +426,7 @@ def get_version():
 
     # Allow latest tmux HEAD
     if version == 'master':
-        return LooseVersion(TMUX_MAX_VERSION)
+        return LooseVersion('%s-master' % TMUX_MAX_VERSION)
 
     version = re.sub(r'[a-z]', '', version)
 

tests/test_common.py

@@ -13,7 +13,7 @@
 from libtmux.common import (
     has_minimum_version, which, session_check_name, tmux_cmd,
     has_version, has_gt_version, has_lt_version, get_version,
-    has_gte_version, has_lte_version, TMUX_MAX_VERSION
+    has_gte_version, has_lte_version, TMUX_MAX_VERSION, TMUX_MIN_VERSION
 )
 from libtmux.exc import LibTmuxException, BadSessionName, TmuxCommandNotFound
 
@@ -29,6 +29,13 @@ class Hi(object):
     monkeypatch.setattr(libtmux.common, 'tmux_cmd', mock_tmux_cmd)
 
     assert has_minimum_version()
+    assert has_gte_version(TMUX_MIN_VERSION)
+    assert has_gt_version(TMUX_MAX_VERSION), (
+        "Greater than the max-supported version"
+    )
+    assert '%s-master' % TMUX_MAX_VERSION == get_version(), (
+        "Is the latest supported version with -master appended"
+    )
 
 
 def test_get_version_openbsd(monkeypatch):