[StGit PATCH 1/2] Add test to ensure that "stg clean" preserves conflicting patches

["Karl Hasselström" <kha@treskal.com>]

From: Pavel Roskin <proski@gnu.org>

If "stg push" fails, the subsequent "stg clean" will remove the patch
that could not be applied. I think it's wrong. Especially when doing
"stg pull", it can happen that I want to run "stg clean" to get rid of
the patches applied upstream so I can concentrate on the conflict.
Instead, the conflicting patch is removed too.

The test added by this patch should pass once the bug is fixed.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Karl Hasselström <kha@treskal.com>

---

I doctored the commit message a bit, and made the failing test use
test_expect_failure.

 t/t2500-clean.sh |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)


diff --git a/t/t2500-clean.sh b/t/t2500-clean.sh
index 3364c18..b38d868 100755
--- a/t/t2500-clean.sh
+++ b/t/t2500-clean.sh
@@ -24,4 +24,21 @@ test_expect_success 'Clean empty patches' '
     [ "$(echo $(stg unapplied))" = "" ]
 '
 
+test_expect_success 'Create a conflict' '
+    stg new p1 -m p1 &&
+    echo bar > foo.txt &&
+    stg refresh &&
+    stg pop &&
+    stg new p2 -m p2
+    echo quux > foo.txt &&
+    stg refresh &&
+    ! stg push
+'
+
+test_expect_failure 'Make sure conflicting patches are preserved' '
+    stg clean &&
+    [ "$(echo $(stg applied))" = "p0 p2 p1" ] &&
+    [ "$(echo $(stg unapplied))" = "" ]
+'
+
 test_done