--- a/tests/test-upgrade-repo.t Tue Apr 05 05:20:05 2022 +0200
+++ b/tests/test-upgrade-repo.t Tue Mar 22 14:14:52 2022 +0100
@@ -1994,3 +1994,70 @@
dirstate-v2: no
$ cd ..
+
+Test automatic upgrade/downgrade
+================================
+
+
+For dirstate v2
+---------------
+
+create an initial repository
+
+ $ hg init auto-upgrade \
+ > --config format.use-dirstate-v2=no \
+ > --config format.use-dirstate-tracked-hint=yes \
+ > --config format.use-share-safe=no
+ $ hg debugbuilddag -R auto-upgrade --new-file .+5
+ $ hg -R auto-upgrade update
+ 6 files updated, 0 files merged, 0 files removed, 0 files unresolved
+ $ hg debugformat -R auto-upgrade | grep dirstate-v2
+ dirstate-v2: no
+
+upgrade it to dirstate-v2 automatically
+
+ $ hg status -R auto-upgrade \
+ > --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
+ > --config format.use-dirstate-v2=yes
+ automatically upgrading repository to the `dirstate-v2` feature
+ (see `hg help config.format.use-dirstate-v2` for details)
+ $ hg debugformat -R auto-upgrade | grep dirstate-v2
+ dirstate-v2: yes
+
+downgrade it from dirstate-v2 automatically
+
+ $ hg status -R auto-upgrade \
+ > --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
+ > --config format.use-dirstate-v2=no
+ automatically downgrading repository from the `dirstate-v2` feature
+ (see `hg help config.format.use-dirstate-v2` for details)
+ $ hg debugformat -R auto-upgrade | grep dirstate-v2
+ dirstate-v2: no
+
+
+For multiple change at the same time
+------------------------------------
+
+ $ hg debugformat -R auto-upgrade | egrep '(dirstate-v2|tracked|share-safe)'
+ dirstate-v2: no
+ tracked-hint: yes
+ share-safe: no
+
+ $ hg status -R auto-upgrade \
+ > --config format.use-dirstate-v2.automatic-upgrade-of-mismatching-repositories=yes \
+ > --config format.use-dirstate-v2=yes \
+ > --config format.use-dirstate-tracked-hint.automatic-upgrade-of-mismatching-repositories=yes \
+ > --config format.use-dirstate-tracked-hint=no\
+ > --config format.use-share-safe.automatic-upgrade-of-mismatching-repositories=yes \
+ > --config format.use-share-safe=yes
+ automatically upgrading repository to the `dirstate-v2` feature
+ (see `hg help config.format.use-dirstate-v2` for details)
+ automatically upgrading repository to the `share-safe` feature
+ (see `hg help config.format.use-share-safe` for details)
+ automatically downgrading repository from the `tracked-hint` feature
+ (see `hg help config.format.use-dirstate-tracked-hint` for details)
+ $ hg debugformat -R auto-upgrade | egrep '(dirstate-v2|tracked|share-safe)'
+ dirstate-v2: yes
+ tracked-hint: no
+ share-safe: yes
+