checkout -m: recreate merge when checking out of unmerged index

diff --git a/t/t7201-co.sh b/t/t7201-co.sh
index 3111baa9e38ecf96de6385dc9241ea8c992e4992..1d4ff6e8d30ce49a2792107be1c23a66b1df3a8b 100755 (executable)
--- a/t/t7201-co.sh
+++ b/t/t7201-co.sh
@@ -335,6 +335,139 @@ test_expect_success \
     git checkout -b delete-me master &&
     rm .git/refs/heads/delete-me &&
     test refs/heads/delete-me = "$(git symbolic-ref HEAD)" &&
-    !(git checkout --track -b track)'
+    test_must_fail git checkout --track -b track'
+
+test_expect_success 'checkout an unmerged path should fail' '
+       rm -f .git/index &&
+       O=$(echo original | git hash-object -w --stdin) &&
+       A=$(echo ourside | git hash-object -w --stdin) &&
+       B=$(echo theirside | git hash-object -w --stdin) &&
+       (
+               echo "100644 $A 0       fild" &&
+               echo "100644 $O 1       file" &&
+               echo "100644 $A 2       file" &&
+               echo "100644 $B 3       file" &&
+               echo "100644 $A 0       filf"
+       ) | git update-index --index-info &&
+       echo "none of the above" >sample &&
+       cat sample >fild &&
+       cat sample >file &&
+       cat sample >filf &&
+       test_must_fail git checkout fild file filf &&
+       test_cmp sample fild &&
+       test_cmp sample filf &&
+       test_cmp sample file
+'
+
+test_expect_success 'checkout with an unmerged path can be ignored' '
+       rm -f .git/index &&
+       O=$(echo original | git hash-object -w --stdin) &&
+       A=$(echo ourside | git hash-object -w --stdin) &&
+       B=$(echo theirside | git hash-object -w --stdin) &&
+       (
+               echo "100644 $A 0       fild" &&
+               echo "100644 $O 1       file" &&
+               echo "100644 $A 2       file" &&
+               echo "100644 $B 3       file" &&
+               echo "100644 $A 0       filf"
+       ) | git update-index --index-info &&
+       echo "none of the above" >sample &&
+       echo ourside >expect &&
+       cat sample >fild &&
+       cat sample >file &&
+       cat sample >filf &&
+       git checkout -f fild file filf &&
+       test_cmp expect fild &&
+       test_cmp expect filf &&
+       test_cmp sample file
+'
+
+test_expect_success 'checkout unmerged stage' '
+       rm -f .git/index &&
+       O=$(echo original | git hash-object -w --stdin) &&
+       A=$(echo ourside | git hash-object -w --stdin) &&
+       B=$(echo theirside | git hash-object -w --stdin) &&
+       (
+               echo "100644 $A 0       fild" &&
+               echo "100644 $O 1       file" &&
+               echo "100644 $A 2       file" &&
+               echo "100644 $B 3       file" &&
+               echo "100644 $A 0       filf"
+       ) | git update-index --index-info &&
+       echo "none of the above" >sample &&
+       echo ourside >expect &&
+       cat sample >fild &&
+       cat sample >file &&
+       cat sample >filf &&
+       git checkout --ours . &&
+       test_cmp expect fild &&
+       test_cmp expect filf &&
+       test_cmp expect file &&
+       git checkout --theirs file &&
+       test ztheirside = "z$(cat file)"
+'
+
+test_expect_success 'checkout with --merge' '
+       rm -f .git/index &&
+       O=$(echo original | git hash-object -w --stdin) &&
+       A=$(echo ourside | git hash-object -w --stdin) &&
+       B=$(echo theirside | git hash-object -w --stdin) &&
+       (
+               echo "100644 $A 0       fild" &&
+               echo "100644 $O 1       file" &&
+               echo "100644 $A 2       file" &&
+               echo "100644 $B 3       file" &&
+               echo "100644 $A 0       filf"
+       ) | git update-index --index-info &&
+       echo "none of the above" >sample &&
+       echo ourside >expect &&
+       cat sample >fild &&
+       cat sample >file &&
+       cat sample >filf &&
+       git checkout -m -- fild file filf &&
+       (
+               echo "<<<<<<< ours"
+               echo ourside
+               echo "======="
+               echo theirside
+               echo ">>>>>>> theirs"
+       ) >merged &&
+       test_cmp expect fild &&
+       test_cmp expect filf &&
+       test_cmp merged file
+'
+
+test_expect_success 'checkout with --merge, in diff3 -m style' '
+       git config merge.conflictstyle diff3 &&
+       rm -f .git/index &&
+       O=$(echo original | git hash-object -w --stdin) &&
+       A=$(echo ourside | git hash-object -w --stdin) &&
+       B=$(echo theirside | git hash-object -w --stdin) &&
+       (
+               echo "100644 $A 0       fild" &&
+               echo "100644 $O 1       file" &&
+               echo "100644 $A 2       file" &&
+               echo "100644 $B 3       file" &&
+               echo "100644 $A 0       filf"
+       ) | git update-index --index-info &&
+       echo "none of the above" >sample &&
+       echo ourside >expect &&
+       cat sample >fild &&
+       cat sample >file &&
+       cat sample >filf &&
+       git checkout -m -- fild file filf &&
+       (
+               echo "<<<<<<< ours"
+               echo ourside
+               echo "|||||||"
+               echo original
+               echo "======="
+               echo theirside
+               echo ">>>>>>> theirs"
+       ) >merged &&
+       test_cmp expect fild &&
+       test_cmp expect filf &&
+       test_cmp merged file
+'
 
 test_done