When the context of multiple identical conflicts are different, two
seemingly the same conflict resolution cannot be safely applied.
In such a case, at least we should be able to record these two
resolutions separately in the rerere database, and reuse them when
we see the same conflict later.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
t/t4200-rerere.sh | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 74 insertions(+)
diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
index 52a8e09..8d52854 100755
--- a/t/t4200-rerere.sh
+++ b/t/t4200-rerere.sh
@@ -407,4 +407,78 @@ test_expect_success 'rerere -h' '
test_i18ngrep [Uu]sage help
'
+concat_insert () {
+ last=$1
+ shift
+ cat early && printf "%s\n" "$@" && cat late "$last"
+}
+
+test_expect_failure 'multiple identical conflicts' '
+ git reset --hard &&
+
+ test_seq 1 6 >early &&
+ >late &&
+ test_seq 11 15 >short &&
+ test_seq 111 120 >long &&
+ concat_insert short >file1 &&
+ concat_insert long >file2 &&
+ git add file1 file2 &&
+ git commit -m base &&
+ git tag base &&
+ git checkout -b six.1 &&
+ concat_insert short 6.1 >file1 &&
+ concat_insert long 6.1 >file2 &&
+ git add file1 file2 &&
+ git commit -m 6.1 &&
+ git checkout -b six.2 HEAD^ &&
+ concat_insert short 6.2 >file1 &&
+ concat_insert long 6.2 >file2 &&
+ git add file1 file2 &&
+ git commit -m 6.2 &&
+
+ # At this point, six.1 and six.2
+ # - derive from common ancestor that has two files
+ # 1...6 7 11..15 (file1) and 1...6 7 111..120 (file2)
+ # - six.1 replaces these 7s with 6.1
+ # - six.2 replaces these 7s with 6.2
+
+ test_must_fail git merge six.1 &&
+
+ # Check that rerere knows that file1 and file2 have conflicts
+
+ printf "%s\n" file1 file2 >expect &&
+ git ls-files -u | sed -e "s/^.* //" | sort -u >actual &&
+ test_cmp expect actual &&
+
+ git rerere status | sort >actual &&
+ test_cmp expect actual &&
+
+ # Resolution is to replace 7 with 6.1 and 6.2 (i.e. take both)
+ concat_insert short 6.1 6.2 >file1 &&
+ concat_insert long 6.1 6.2 >file2 &&
+
+ git rerere remaining >actual &&
+ test_cmp expect actual &&
+
+ # We resolved file1 and file2
+ git rerere &&
+ >expect &&
+ git rerere remaining >actual &&
+ test_cmp expect actual &&
+
+ # Now we should be able to resolve them both
+ git reset --hard &&
+ test_must_fail git merge six.1 &&
+ git rerere &&
+
+ >expect &&
+ git rerere remaining >actual &&
+ test_cmp expect actual &&
+
+ concat_insert short 6.1 6.2 >file1.expect &&
+ concat_insert long 6.1 6.2 >file2.expect &&
+ test_cmp file1.expect file1 &&
+ test_cmp file2.expect file2
+'
+
test_done
--
2.6.0-rc2-164-gdcd5d00
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