--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-copies-in-changeset.t	Wed Dec 27 19:49:36 2017 -0800
@@ -0,0 +1,105 @@
+
+  $ cat >> $HGRCPATH << EOF
+  > [experimental]
+  > copies.write-to=changeset-only
+  > [alias]
+  > changesetcopies = log -r . -T 'files: {files}
+  >   {extras % "{ifcontains("copies", key, "{key}: {value}\n")}"}'
+  > EOF
+
+Check that copies are recorded correctly
+
+  $ hg init repo
+  $ cd repo
+  $ echo a > a
+  $ hg add a
+  $ hg ci -m initial
+  $ hg cp a b
+  $ hg cp a c
+  $ hg cp a d
+  $ hg ci -m 'copy a to b, c, and d'
+  $ hg changesetcopies
+  files: b c d
+  p1copies: b\x00a (esc)
+  c\x00a (esc)
+  d\x00a (esc)
+
+Check that renames are recorded correctly
+
+  $ hg mv b b2
+  $ hg ci -m 'rename b to b2'
+  $ hg changesetcopies
+  files: b b2
+  p1copies: b2\x00b (esc)
+
+Rename onto existing file. This should get recorded in the changeset files list and in the extras,
+even though there is no filelog entry.
+
+  $ hg cp b2 c --force
+  $ hg st --copies
+  M c
+    b2
+  $ hg debugindex c
+     rev linkrev nodeid       p1           p2
+       0       1 b789fdd96dc2 000000000000 000000000000
+  $ hg ci -m 'move b onto d'
+  $ hg changesetcopies
+  files: c
+  p1copies: c\x00b2 (esc)
+  $ hg debugindex c
+     rev linkrev nodeid       p1           p2
+       0       1 b789fdd96dc2 000000000000 000000000000
+
+Create a merge commit with copying done during merge.
+
+  $ hg co 0
+  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
+  $ hg cp a e
+  $ hg cp a f
+  $ hg ci -m 'copy a to e and f'
+  created new head
+  $ hg merge 3
+  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  (branch merge, don't forget to commit)
+File 'a' exists on both sides, so 'g' could be recorded as being from p1 or p2, but we currently
+always record it as being from p1
+  $ hg cp a g
+File 'd' exists only in p2, so 'h' should be from p2
+  $ hg cp d h
+File 'f' exists only in p1, so 'i' should be from p1
+  $ hg cp f i
+  $ hg ci -m 'merge'
+  $ hg changesetcopies
+  files: g h i
+  p1copies: g\x00a (esc)
+  i\x00f (esc)
+  p2copies: h\x00d (esc)
+
+Test writing to both changeset and filelog
+
+  $ hg cp a j
+  $ hg ci -m 'copy a to j' --config experimental.copies.write-to=compatibility
+  $ hg changesetcopies
+  files: j
+  p1copies: j\x00a (esc)
+  $ hg debugdata j 0
+  \x01 (esc)
+  copy: a
+  copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
+  \x01 (esc)
+  a
+
+Test writing only to filelog
+
+  $ hg cp a k
+  $ hg ci -m 'copy a to k' --config experimental.copies.write-to=filelog-only
+  $ hg changesetcopies
+  files: k
+  $ hg debugdata k 0
+  \x01 (esc)
+  copy: a
+  copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
+  \x01 (esc)
+  a
+
+  $ cd ..