Test that 'petrify' is safe against multiple invocations

Make sure we don't lose the 'unpetrify-ref' field in this case, or
unpetrify will break.

2 files changed, 54 insertions, 0 deletions

diff --git a/tests.branching/petrify-no-double-petrify.script b/tests.branching/petrify-no-double-petrify.script
new file mode 100755
index 00000000..be72ba6b
--- /dev/null
+++ b/tests.branching/petrify-no-double-petrify.script
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Copyright (C) 2012  Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+# It should be impossible to lose the original refs, or we risk making
+# unpetrify impossible.
+
+set -eu
+
+
+# Disable test on versions of Python before 2.7.
+if ! python --version 2>&1 | grep '^Python 2\.[78]' > /dev/null
+then
+    cat "$SRCDIR/tests.branching/petrify.stdout"
+    exit 0
+fi
+
+
+cd "$DATADIR/workspace"
+"$SRCDIR/scripts/test-morph" init
+"$SRCDIR/scripts/test-morph" checkout baserock:morphs master
+
+cd master/baserock:morphs
+"$SRCDIR/scripts/test-morph" petrify
+"$SRCDIR/scripts/test-morph" petrify
+"$SRCDIR/scripts/test-morph" petrify
+
+cat hello-stratum.morph
diff --git a/tests.branching/petrify-no-double-petrify.stdout b/tests.branching/petrify-no-double-petrify.stdout
new file mode 100644
index 00000000..4aa2b2ea
--- /dev/null
+++ b/tests.branching/petrify-no-double-petrify.stdout
@@ -0,0 +1,13 @@
+{
+    "name": "hello-stratum",
+    "kind": "stratum",
+    "chunks": [
+        {
+            "name": "hello",
+            "repo": "baserock:hello",
+            "ref": "f4d032b42c0134e67bdf19a43fa99072493667d7",
+            "build-depends": [],
+            "unpetrify-ref": "master"
+        }
+    ]
+}