test-copies: test that copies' sidedata can get computed during push

If the source of the push does not have the necessary sidedata but the server
needs them, the client should compute them on the fly while pushing.

Differential Revision: https://phab.mercurial-scm.org/D10350

tests/test-copies-chain-merge.t

@@ -1,4 +1,4 b''
-#testcases filelog compatibility changeset sidedata upgraded upgraded-parallel pull push pull-upgrade
+#testcases filelog compatibility changeset sidedata upgraded upgraded-parallel pull push pull-upgrade push-upgrade
 
 =====================================================
 Test Copy tracing for chain of copies involving merge
@@ -73,7 +73,6 b' use git diff to see rename'
   > EOF
 #endif
 
-
 #if pull-upgrade
   $ cat >> $HGRCPATH << EOF
   > [format]
@@ -84,6 +83,16 b' use git diff to see rename'
   > EOF
 #endif
 
+#if push-upgrade
+  $ cat >> $HGRCPATH << EOF
+  > [format]
+  > exp-use-side-data = no
+  > exp-use-copies-side-data-changeset = no
+  > [experimental]
+  > changegroup4 = yes
+  > EOF
+#endif
+
   $ cat > same-content.txt << EOF
   > Here is some content that will be the same accros multiple file.
   > 
@@ -1770,6 +1779,28 b' We upgrade a repository that is not usin'
   $ cd ../repo-chain
 #endif
 
+#if push-upgrade
+  $ cat >> $HGRCPATH << EOF
+  > [format]
+  > exp-use-side-data = yes
+  > exp-use-copies-side-data-changeset = yes
+  > [experimental]
+  > changegroup4 = yes
+  > EOF
+  $ cd ..
+  $ mv repo-chain repo-source
+  $ hg init repo-chain
+  $ cd repo-source
+  $ hg push ../repo-chain
+  pushing to ../repo-chain
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 80 changesets with 44 changes to 25 files (+39 heads)
+  $ cd ../repo-chain
+#endif
+
 #if no-compatibility no-filelog no-changeset
 
   $ hg debugchangedfiles --compute 0