[PATCH v5 5/7] reset: add test cases for "--keep" option

[Christian Couder <chriscool@tuxfamily.org>]

This shows that with the "--keep" option, changes that are both in
the work tree and the index are kept in the work tree after the
reset (but discarded in the index). As with the "--merge" option,
changes that are in both the work tree and the index are discarded
after the reset.

In the case of unmerged entries, we can see that
"git reset --merge HEAD" is disallowed while it works using
"--keep" instead.

And this shows that otherwise "--merge" and "--keep" have the same
behavior.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 t/t7110-reset-merge.sh |   62 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 61 insertions(+), 1 deletions(-)

diff --git a/t/t7110-reset-merge.sh b/t/t7110-reset-merge.sh
index 6afaf73..bd2ef94 100755
--- a/t/t7110-reset-merge.sh
+++ b/t/t7110-reset-merge.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2009 Christian Couder
 #
 
-test_description='Tests for "git reset --merge"'
+test_description='Tests for "git reset" with --merge and --keep'
 
 . ./test-lib.sh
 
@@ -30,6 +30,20 @@ test_expect_success 'reset --merge is ok with changes in file it does not touch'
      grep 4 file2
 '
 
+test_expect_success 'reset --keep is ok with changes in file it does not touch' '
+     git reset --hard HEAD^ &&
+     echo "line 4" >> file1 &&
+     echo "line 4" >> file2 &&
+     test_tick &&
+     git commit -m "add line 4" file1 &&
+     git reset --keep HEAD^ &&
+     ! grep 4 file1 &&
+     grep 4 file2 &&
+     git reset --keep HEAD@{1} &&
+     grep 4 file1 &&
+     grep 4 file2
+'
+
 test_expect_success 'reset --merge discards changes added to index (1)' '
      echo "line 5" >> file1 &&
      git add file1 &&
@@ -55,6 +69,25 @@ test_expect_success 'reset --merge discards changes added to index (2)' '
      grep 4 file1
 '
 
+test_expect_success 'reset --keep fails with changes in index in files it touches' '
+     echo "line 4" >> file2 &&
+     echo "line 5" >> file1 &&
+     git add file1 &&
+     test_must_fail git reset --keep HEAD^ &&
+     git reset --hard HEAD
+'
+
+test_expect_success 'reset --keep keeps changes it does not touch' '
+     echo "line 4" >> file2 &&
+     git add file2 &&
+     git reset --keep HEAD^ &&
+     grep 4 file2 &&
+     git reset --keep HEAD@{1} &&
+     grep 4 file2 &&
+     grep 4 file1 &&
+     git reset --hard HEAD
+'
+
 test_expect_success 'reset --merge fails with changes in file it touches' '
      echo "line 5" >> file1 &&
      test_tick &&
@@ -66,6 +99,17 @@ test_expect_success 'reset --merge fails with changes in file it touches' '
      git reset --hard HEAD^
 '
 
+test_expect_success 'reset --keep fails with changes in file it touches' '
+     echo "line 5" >> file1 &&
+     test_tick &&
+     git commit -m "add line 5" file1 &&
+     sed -e "s/line 1/changed line 1/" <file1 >file3 &&
+     mv file3 file1 &&
+     test_must_fail git reset --keep HEAD^ 2>err.log &&
+     grep file1 err.log | grep "not uptodate" &&
+     git reset --hard HEAD^
+'
+
 test_expect_success 'setup 2 different branches' '
      git branch branch1 &&
      git branch branch2 &&
@@ -87,10 +131,26 @@ test_expect_success '"reset --merge HEAD^" is ok with pending merge' '
      git reset --hard HEAD@{1}
 '
 
+test_expect_success '"reset --keep HEAD^" is ok with pending merge' '
+     test_must_fail git merge branch1 &&
+     git reset --keep HEAD^ &&
+     test -z "$(git diff --cached)" &&
+     test -n "$(git diff)" &&
+     git reset --hard HEAD@{1}
+'
+
 test_expect_success '"reset --merge HEAD" fails with pending merge' '
      test_must_fail git merge branch1 &&
      test_must_fail git reset --merge HEAD &&
      git reset --hard HEAD
 '
 
+test_expect_success '"reset --keep HEAD" is ok with pending merge' '
+     test_must_fail git merge branch1 &&
+     git reset --keep HEAD &&
+     test -z "$(git diff --cached)" &&
+     test -n "$(git diff)" &&
+     git reset --hard HEAD
+'
+
 test_done
-- 
1.6.6.rc1.8.gd33ec