apply --recount: allow "no-op hunks"

diff --git a/t/t6044-merge-unrelated-index-changes.sh b/t/t6044-merge-unrelated-index-changes.sh
index 23b86fb9778980ab813d5e252065ebe34fe4736d..5e3779ebc9310bfb25d0c6579f234ecf4fabd12e 100755 (executable)
--- a/t/t6044-merge-unrelated-index-changes.sh
+++ b/t/t6044-merge-unrelated-index-changes.sh
@@ -82,7 +82,8 @@ test_expect_success 'ff update, important file modified' '
        touch subdir/e &&
        git add subdir/e &&
 
-       test_must_fail git merge E^0
+       test_must_fail git merge E^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'resolve, trivial' '
@@ -91,7 +92,8 @@ test_expect_success 'resolve, trivial' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge -s resolve C^0
+       test_must_fail git merge -s resolve C^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'resolve, non-trivial' '
@@ -100,7 +102,8 @@ test_expect_success 'resolve, non-trivial' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge -s resolve D^0
+       test_must_fail git merge -s resolve D^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'recursive' '
@@ -109,7 +112,8 @@ test_expect_success 'recursive' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge -s recursive C^0
+       test_must_fail git merge -s recursive C^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'recursive, when merge branch matches merge base' '
@@ -118,7 +122,45 @@ test_expect_success 'recursive, when merge branch matches merge base' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge -s recursive F^0
+       test_must_fail git merge -s recursive F^0 &&
+       test_path_is_missing .git/MERGE_HEAD
+'
+
+test_expect_success 'merge-recursive, when index==head but head!=HEAD' '
+       git reset --hard &&
+       git checkout C^0 &&
+
+       # Make index match B
+       git diff C B -- | git apply --cached &&
+       # Merge B & F, with B as "head"
+       git merge-recursive A -- B F > out &&
+       test_i18ngrep "Already up to date" out
+'
+
+test_expect_success 'recursive, when file has staged changes not matching HEAD nor what a merge would give' '
+       git reset --hard &&
+       git checkout B^0 &&
+
+       mkdir subdir &&
+       test_seq 1 10 >subdir/a &&
+       git add subdir/a &&
+
+       # We have staged changes; merge should error out
+       test_must_fail git merge -s recursive E^0 2>err &&
+       test_i18ngrep "changes to the following files would be overwritten" err
+'
+
+test_expect_success 'recursive, when file has staged changes matching what a merge would give' '
+       git reset --hard &&
+       git checkout B^0 &&
+
+       mkdir subdir &&
+       test_seq 1 11 >subdir/a &&
+       git add subdir/a &&
+
+       # We have staged changes; merge should error out
+       test_must_fail git merge -s recursive E^0 2>err &&
+       test_i18ngrep "changes to the following files would be overwritten" err
 '
 
 test_expect_success 'octopus, unrelated file touched' '
@@ -127,7 +169,8 @@ test_expect_success 'octopus, unrelated file touched' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge C^0 D^0
+       test_must_fail git merge C^0 D^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'octopus, related file removed' '
@@ -136,7 +179,8 @@ test_expect_success 'octopus, related file removed' '
 
        git rm b &&
 
-       test_must_fail git merge C^0 D^0
+       test_must_fail git merge C^0 D^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'octopus, related file modified' '
@@ -145,7 +189,8 @@ test_expect_success 'octopus, related file modified' '
 
        echo 12 >>a && git add a &&
 
-       test_must_fail git merge C^0 D^0
+       test_must_fail git merge C^0 D^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'ours' '
@@ -154,7 +199,8 @@ test_expect_success 'ours' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge -s ours C^0
+       test_must_fail git merge -s ours C^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_expect_success 'subtree' '
@@ -163,7 +209,8 @@ test_expect_success 'subtree' '
 
        touch random_file && git add random_file &&
 
-       test_must_fail git merge -s subtree E^0
+       test_must_fail git merge -s subtree E^0 &&
+       test_path_is_missing .git/MERGE_HEAD
 '
 
 test_done