adds an initial treedelta test

3 files changed, 54 insertions, 0 deletions

diff --git a/testing/03-treedelta-rules.yarn b/testing/03-treedelta-rules.yarn
new file mode 100644
index 0000000..e7c0def
--- /dev/null
+++ b/testing/03-treedelta-rules.yarn
@@ -0,0 +1,34 @@
+<!-- -*- markdown -*- -->
+
+Using the tree deltas in rules
+==============================
+
+Gitano is able to use the tree deltas produced by changes in ref tips when
+evaluating whether or not an update is permitted.  Since the tree deltas can be
+expensive to generate, we only trigger generation of them on demand. As such
+they are an area of the code where errors could easily trickle in unless we
+keep a close eye on things.
+
+Start and Target trees
+----------------------
+
+The first part of the treedelta support are the gitano/starttree and
+gitano/targetttee lists.  These contain the flattened entry names for
+everything in the trees.
+
+    SCENARIO may not create files called FOO
+    GIVEN a standard instance
+      AND testinstance using adminkey has patched gitano-admin with no-create-FOO.patch
+    GIVEN a unix user called alice
+      AND alice has keys called main
+
+    WHEN testinstance, using adminkey, adds user alice, using alice main
+     AND testinstance adminkey runs create testrepo alice
+     AND alice, using main, clones testrepo as testrepo
+    THEN alice testrepo has no file called FOO
+
+    WHEN alice applies add-a-FOO.patch in testrepo
+     AND alice, using main, expecting failure, pushes testrepo to testrepo.git
+    THEN stderr contains No FOOs allowed
+
+    FINALLY the instance is torn down
diff --git a/testing/admin-patches/no-create-FOO.patch b/testing/admin-patches/no-create-FOO.patch
new file mode 100644
index 0000000..b5d79a4
--- /dev/null
+++ b/testing/admin-patches/no-create-FOO.patch
@@ -0,0 +1,13 @@
+diff --git a/rules/project.lace b/rules/project.lace
+index aafa17c..388766a 100644
+--- a/rules/project.lace
++++ b/rules/project.lace
+@@ -43,6 +43,8 @@ include global:remoteconfigchecks op_is_config
+ # Okay, if we're altering the admin ref, in we go
+ include global:adminchecks is_admin_ref
+ 
++deny "No FOOs allowed" op_is_normal [target_tree is FOO]
++
+ # Now we're into branch operations.  Owners can do any normal operation
+ # Normal ops are create/delete/fastforward on refs
+ allow "Owners can create refs" op_is_normal is_owner
diff --git a/testing/content-patches/add-a-FOO.patch b/testing/content-patches/add-a-FOO.patch
new file mode 100644
index 0000000..bb7d8a8
--- /dev/null
+++ b/testing/content-patches/add-a-FOO.patch
@@ -0,0 +1,7 @@
+diff --git a/FOO b/FOO
+new file mode 100644
+index 0000000..ee5a5f2
+--- /dev/null
++++ b/FOO
+@@ -0,0 +1 @@
++This is a FOO