git-fetch.txt: document fetch output

diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
index 6fcc6d4e75c348b98ac30eec2977df39f8676359..1a080e782371e2d7ad489c706a54fce1553b9579 100755 (executable)
--- a/t/t4200-rerere.sh
+++ b/t/t4200-rerere.sh
@@ -412,7 +412,40 @@ concat_insert () {
        cat early && printf "%s\n" "$@" && cat late "$last"
 }
 
-test_expect_failure 'multiple identical conflicts' '
+count_pre_post () {
+       find .git/rr-cache/ -type f -name "preimage*" >actual &&
+       test_line_count = "$1" actual &&
+       find .git/rr-cache/ -type f -name "postimage*" >actual &&
+       test_line_count = "$2" actual
+}
+
+test_expect_success 'rerere gc' '
+       find .git/rr-cache -type f >original &&
+       xargs test-chmtime -172800 <original &&
+
+       git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
+       find .git/rr-cache -type f >actual &&
+       test_cmp original actual &&
+
+       git -c gc.rerereresolved=5 -c gc.rerereunresolved=0 rerere gc &&
+       find .git/rr-cache -type f >actual &&
+       test_cmp original actual &&
+
+       git -c gc.rerereresolved=0 -c gc.rerereunresolved=0 rerere gc &&
+       find .git/rr-cache -type f >actual &&
+       >expect &&
+       test_cmp expect actual
+'
+
+merge_conflict_resolve () {
+       git reset --hard &&
+       test_must_fail git merge six.1 &&
+       # 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
+}
+
+test_expect_success 'multiple identical conflicts' '
        git reset --hard &&
 
        test_seq 1 6 >early &&
@@ -441,7 +474,7 @@ test_expect_failure 'multiple identical conflicts' '
        # - six.1 replaces these 7s with 6.1
        # - six.2 replaces these 7s with 6.2
 
-       test_must_fail git merge six.1 &&
+       merge_conflict_resolve &&
 
        # Check that rerere knows that file1 and file2 have conflicts
 
@@ -452,19 +485,43 @@ test_expect_failure 'multiple identical conflicts' '
        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 &&
 
+       count_pre_post 2 0 &&
+
+       # Pretend that the conflicts were made quite some time ago
+       find .git/rr-cache/ -type f | xargs test-chmtime -172800 &&
+
+       # Unresolved entries have not expired yet
+       git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
+       count_pre_post 2 0 &&
+
+       # Unresolved entries have expired
+       git -c gc.rerereresolved=5 -c gc.rerereunresolved=1 rerere gc &&
+       count_pre_post 0 0 &&
+
+       # Recreate the conflicted state
+       merge_conflict_resolve &&
+       count_pre_post 2 0 &&
+
+       # Clear it
+       git rerere clear &&
+       count_pre_post 0 0 &&
+
+       # Recreate the conflicted state
+       merge_conflict_resolve &&
+       count_pre_post 2 0 &&
+
        # We resolved file1 and file2
        git rerere &&
        >expect &&
        git rerere remaining >actual &&
        test_cmp expect actual &&
 
+       # We must have recorded both of them
+       count_pre_post 2 2 &&
+
        # Now we should be able to resolve them both
        git reset --hard &&
        test_must_fail git merge six.1 &&
@@ -477,7 +534,29 @@ test_expect_failure 'multiple identical conflicts' '
        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_cmp file2.expect file2 &&
+
+       # Forget resolution for file2
+       git rerere forget file2 &&
+       echo file2 >expect &&
+       git rerere status >actual &&
+       test_cmp expect actual &&
+       count_pre_post 2 1 &&
+
+       # file2 already has correct resolution, so record it again
+       git rerere &&
+
+       # Pretend that the resolutions are old again
+       find .git/rr-cache/ -type f | xargs test-chmtime -172800 &&
+
+       # Resolved entries have not expired yet
+       git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
+
+       count_pre_post 2 2 &&
+
+       # Resolved entries have expired
+       git -c gc.rerereresolved=1 -c gc.rerereunresolved=5 rerere gc &&
+       count_pre_post 0 0
 '
 
 test_done