# HG changeset patch
# User timeless <timeless@mozdev.org>
# Date 1455737792 0
# Node ID 1b07331f59005739c17daa12661475c4f81be52e
# Parent  1a943a3a78ea738c6fa42e53f115aa9cf0b05972
run-tests: refactor port allocation into functions

Adding a port reservation was too hard and someone did it wrong.
By refactoring, such reservations can be managed more safely.

This also adds documentation so that the next person who tries
is more likely to update all the places correctly.

Note that in this commit the reservation and consumers do not
match, that will be fixed in the next commit.

diff -r 1a943a3a78ea -r 1b07331f5900 tests/run-tests.py
--- a/tests/run-tests.py	Wed Feb 17 19:34:01 2016 +0000
+++ b/tests/run-tests.py	Wed Feb 17 19:36:32 2016 +0000
@@ -720,6 +720,10 @@
         """Terminate execution of this test."""
         self._aborted = True
 
+    def _portmap(self, i):
+        offset = '' if i == 0 else '%s' % i
+        return (br':%d\b' % (self._startport + i), b':$HGPORT%s' % offset)
+
     def _getreplacements(self):
         """Obtain a mapping of text replacements to apply to test output.
 
@@ -728,11 +732,12 @@
         occur.
         """
         r = [
-            (br':%d\b' % self._startport, b':$HGPORT'),
-            (br':%d\b' % (self._startport + 1), b':$HGPORT1'),
-            (br':%d\b' % (self._startport + 2), b':$HGPORT2'),
-            (br':%d\b' % (self._startport + 2), b':$HGPORT3'),
-            (br':%d\b' % (self._startport + 2), b':$HGPORT4'),
+            # This list should be parallel to defineport in _getenv
+            self._portmap(0),
+            self._portmap(1),
+            self._portmap(2),
+            self._portmap(3),
+            self._portmap(4),
             (br'(?m)^(saved backup bundle to .*\.hg)( \(glob\))?$',
              br'\1 (glob)'),
             ]
@@ -752,14 +757,18 @@
 
     def _getenv(self):
         """Obtain environment variables to use during test execution."""
+        def defineport(i):
+            offset = '' if i == 0 else '%s' % i
+            env["HGPORT%s" % offset] = '%s' % (self._startport + i)
         env = os.environ.copy()
         env['TESTTMP'] = self._testtmp
         env['HOME'] = self._testtmp
-        env["HGPORT"] = str(self._startport)
-        env["HGPORT1"] = str(self._startport + 1)
-        env["HGPORT2"] = str(self._startport + 2)
-        env["HGPORT3"] = str(self._startport + 3)
-        env["HGPORT4"] = str(self._startport + 4)
+        # This number should match portneeded in _getport
+        # XXX currently it does not, this is a bug that will be fixed
+        # in the next commit.
+        for port in xrange(5):
+            # This list should be parallel to _portmap in _getreplacements
+            defineport(port)
         env["HGRCPATH"] = os.path.join(self._threadtmp, b'.hgrc')
         env["DAEMON_PIDS"] = os.path.join(self._threadtmp, b'daemon.pids')
         env["HGEDITOR"] = ('"' + sys.executable + '"'