--- a/tests/test-upgrade-repo.t	Thu Nov 24 16:24:09 2016 -0800
+++ b/tests/test-upgrade-repo.t	Sun Dec 18 16:16:54 2016 -0800
@@ -1,5 +1,51 @@
-  $ hg init empty
-  $ cd empty
-  $ hg debugupgraderepo
-  abort: not yet implemented
+  $ cat >> $HGRCPATH << EOF
+  > [extensions]
+  > share =
+  > EOF
+
+store and revlogv1 are required in source
+
+  $ hg --config format.usestore=false init no-store
+  $ hg -R no-store debugupgraderepo
+  abort: cannot upgrade repository; requirement missing: store
+  [255]
+
+  $ hg init no-revlogv1
+  $ cat > no-revlogv1/.hg/requires << EOF
+  > dotencode
+  > fncache
+  > generaldelta
+  > store
+  > EOF
+
+  $ hg -R no-revlogv1 debugupgraderepo
+  abort: cannot upgrade repository; requirement missing: revlogv1
   [255]
+
+Cannot upgrade shared repositories
+
+  $ hg init share-parent
+  $ hg -q share share-parent share-child
+
+  $ hg -R share-child debugupgraderepo
+  abort: cannot upgrade repository; unsupported source requirement: shared
+  [255]
+
+Do not yet support upgrading manifestv2 and treemanifest repos
+
+  $ hg --config experimental.manifestv2=true init manifestv2
+  $ hg -R manifestv2 debugupgraderepo
+  abort: cannot upgrade repository; unsupported source requirement: manifestv2
+  [255]
+
+  $ hg --config experimental.treemanifest=true init treemanifest
+  $ hg -R treemanifest debugupgraderepo
+  abort: cannot upgrade repository; unsupported source requirement: treemanifest
+  [255]
+
+Cannot add manifestv2 or treemanifest requirement during upgrade
+
+  $ hg init disallowaddedreq
+  $ hg -R disallowaddedreq --config experimental.manifestv2=true --config experimental.treemanifest=true debugupgraderepo
+  abort: cannot upgrade repository; do not support adding requirement: manifestv2, treemanifest
+  [255]