tests: add a test to demonstrate metaedit+dirsync issue

Reviewed By: DurhamG

Differential Revision: D29430673

fbshipit-source-id: d17a25e892d20dc006ed97d60239b53fb4fbebcc

eden/scm/tests/test-fb-hgext-dirsync-metaedit.t

@@ -0,0 +1,40 @@
+#chg-compatible
+
+  $ shorttraceback
+  $ configure modern
+  $ enable dirsync amend
+
+  $ newrepo
+
+Create an unsynced commit
+
+  $ drawdag << 'EOS'
+  > C  # C/dir1/c=c
+  > |
+  > B  # B/dir1/b=b
+  > |
+  > A  # A/dir1/a=a
+  >    # drawdag.defaultfiles=false
+  > EOS
+
+Setup dirsync
+
+  $ readconfig <<EOF
+  > [dirsync]
+  > sync1.1=dir1/
+  > sync1.2=dir2/
+  > EOF
+
+Test metaedit
+BUG: should not crash
+
+  $ hg metaedit $A -v -m 'A1'
+  committing changelog
+  mirrored adding 'dir1/b' to 'dir2/b'
+  committing files:
+  dir1/b
+  dir2/b
+  committing manifest
+  committing changelog
+  RuntimeError: new p1 manifest (3238fc4c2915bee4faabbe8c65cc6aa918d36f70) is not the old p1 manifest (1f4be1ab4bf257b66c6fc07a9e2c91bfd3158a11)
+  [255]