[tools] testbot: Ignore replies to patch series.

[Francois Gouget]

Except for part 1, replies to patch series cannot be tested even if
they contain a patch:
- They must not take the place of the original patch series part.
- They are likely to arrive long after the patch series has been
  completed, by which time the TestBot no longer has access to the
  patch series parts.
- They must not cause the TestBot to open a new patch series waiting
  for the other parts.
So ignore replies to patch series, except for replies to part 1 which
are treated as regular patches.
With this patch, when a collision happens, we know it's not because of
a reply so adjust the corresponding patch disposition.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48353
Signed-off-by: Francois Gouget <fgouget at codeweavers.com>
---
 testbot/lib/WineTestBot/Patches.pm          | 35 ++++++++++++++-------
 testbot/lib/WineTestBot/PendingPatchSets.pm |  2 +-
 2 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/testbot/lib/WineTestBot/Patches.pm b/testbot/lib/WineTestBot/Patches.pm
index a76c35fd48..7cd780e5e0 100644
--- a/testbot/lib/WineTestBot/Patches.pm
+++ b/testbot/lib/WineTestBot/Patches.pm
@@ -542,10 +542,31 @@ sub NewPatch($$$)
   }
 
   my $ErrMessage;
-  if (scalar(@PatchBodies) == 1)
+  my $SubjectInfo = $Patch->ParseSubject();
+  if (@PatchBodies == 0)
   {
-    my $SubjectInfo = $Patch->ParseSubject();
-    $Patch->Disposition($SubjectInfo->{PartNo} ? "Checking series" : "Checking patch");
+    $Patch->Disposition("No patch found");
+  }
+  elsif (@PatchBodies > 1)
+  {
+    $Patch->Disposition("Message contains multiple patches");
+  }
+  elsif ($SubjectInfo->{Re} and ($SubjectInfo->{PartNo} || 0) > 1)
+  {
+    # Except for part 1, replies to patch series cannot be tested even if
+    # they contain a patch:
+    # - They must not take the place of the original patch series part.
+    # - They are likely to arrive long after the patch series has been
+    #   completed, by which time the TestBot no longer has access to the
+    #   patch series parts.
+    # - They must not trigger the creation of a new PendingPatchSet object.
+    $Patch->Disposition("Reply to a patch series");
+  }
+  else
+  {
+    # Treat replies to patch series part 1 as regular patches
+    $SubjectInfo->{PartNo} = undef if ($SubjectInfo->{Re});
+    $Patch->Disposition("Checking ". ($SubjectInfo->{PartNo} ? "series" : "patch"));
     (my $_ErrKey, my $_ErrProperty, $ErrMessage) = $self->Save();
     link($PatchBodies[0]->path, "$DataDir/patches/" . $Patch->Id);
     if (!defined $ErrMessage)
@@ -555,14 +576,6 @@ sub NewPatch($$$)
           $Patch->Submit($PatchBodies[0]->path, $SubjectInfo);
     }
   }
-  elsif (scalar(@PatchBodies) == 0)
-  {
-    $Patch->Disposition("No patch found");
-  }
-  else
-  {
-    $Patch->Disposition("Message contains multiple patches");
-  }
 
   foreach my $PatchBody (@PatchBodies)
   {
diff --git a/testbot/lib/WineTestBot/PendingPatchSets.pm b/testbot/lib/WineTestBot/PendingPatchSets.pm
index 8f5b470542..9e386af588 100644
--- a/testbot/lib/WineTestBot/PendingPatchSets.pm
+++ b/testbot/lib/WineTestBot/PendingPatchSets.pm
@@ -245,7 +245,7 @@ sub NewSubmission($$$)
   my $Part = $Parts->GetItem($SubjectInfo->{PartNo});
   if ($Part)
   {
-    $Patch->Disposition("Existing part reply / collision");
+    $Patch->Disposition("Patch series collision");
     return undef;
   }
 
-- 
2.20.1