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author | Eric Sunshine <sunshine@sunshineco.com> | 2013-07-09 01:55:04 -0400 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2013-07-09 09:24:59 -0700 |
commit | 18d472db6fe3909537ceb7e0c54cf01fa3466b8f (patch) | |
tree | 02ffb5f8f67370a7334d4901baa66154ab4da460 /t | |
parent | log -L: improve comments in process_all_files() (diff) | |
download | tgif-18d472db6fe3909537ceb7e0c54cf01fa3466b8f.tar.xz |
t4211: fix broken test when one -L range is subset of another
t4211 attempts to test multiple git-log -L ranges where one range is a
superset of the other, and falsely succeeds because its "expected"
output is incorrect.
Overlapping -L ranges handed to git-log are coalesced by
line-log.c:sort_and_merge_range_set() into a set of non-overlapping,
disjoint ranges. When one range is a subset of another,
sort_and_merge_range_set() should coalesce both ranges to the superset
range, but instead the coalesced range often is incorrectly truncated to
the end of the subset range. For example, ranges 2-8 and 3-4 are
coalesced incorrectly to 2-4.
One can observe this incorrect behavior with git-log -L using the test
repository created by t4211. The superset/subset ranges t4211 employs
are 4-$ and 8-12 (where $ represents end-of-file). The coalesced range
should be 4-$. Manually invoking git-log with the same ranges the test
employs, we see:
% git log -L 4:a.c simple |
awk '/^commit [0-9a-f]{40}/ { print substr($2,1,7) }'
4659538
100b61a
39b6eb2
a6eb826
f04fb20
de4c48a
% git log -L 8,12:a.c simple | awk ...
f04fb20
de4c48a
% git log -L 4:a.c -L 8,12:a.c simple | awk ...
a6eb826
f04fb20
de4c48a
This last output is incorrect. 8-12 is a subset of 4-$, hence the output
of the coalesced range should be the same as the 4-$ output shown first.
In fact, the above incorrect output is the truncated bogus range 4-12:
% git log -L 4,12:a.c simple | awk ...
a6eb826
f04fb20
de4c48a
Fix the test to correctly fail in the presence of the
sort_and_merge_range_set() coalescing bug. Do so by changing the
"expected" output to the commits mentioned in the 4-$ output above.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't')
-rwxr-xr-x | t/t4211-line-log.sh | 4 | ||||
-rw-r--r-- | t/t4211/expect.multiple-superset | 134 |
2 files changed, 133 insertions, 5 deletions
diff --git a/t/t4211-line-log.sh b/t/t4211-line-log.sh index 7776f93e3d..549df9e054 100755 --- a/t/t4211-line-log.sh +++ b/t/t4211-line-log.sh @@ -50,8 +50,8 @@ canned_test "-M -L ':f:b.c' parallel-change" parallel-change-f-to-main canned_test "-L 4,12:a.c -L :main:a.c simple" multiple canned_test "-L 4,18:a.c -L :main:a.c simple" multiple-overlapping canned_test "-L :main:a.c -L 4,18:a.c simple" multiple-overlapping -canned_test "-L 4:a.c -L 8,12:a.c simple" multiple-superset -canned_test "-L 8,12:a.c -L 4:a.c simple" multiple-superset +canned_test_failure "-L 4:a.c -L 8,12:a.c simple" multiple-superset +canned_test_failure "-L 8,12:a.c -L 4:a.c simple" multiple-superset test_bad_opts "-L" "switch.*requires a value" test_bad_opts "-L b.c" "argument.*not of the form" diff --git a/t/t4211/expect.multiple-superset b/t/t4211/expect.multiple-superset index a1f5bc49c8..d930b6eec4 100644 --- a/t/t4211/expect.multiple-superset +++ b/t/t4211/expect.multiple-superset @@ -1,3 +1,100 @@ +commit 4659538844daa2849b1a9e7d6fadb96fcd26fc83 +Author: Thomas Rast <trast@student.ethz.ch> +Date: Thu Feb 28 10:48:43 2013 +0100 + + change back to complete line + +diff --git a/a.c b/a.c +--- a/a.c ++++ b/a.c +@@ -4,19 +4,21 @@ + long f(long x) + { + int s = 0; + while (x) { + x >>= 1; + s++; + } + return s; + } + + /* + * This is only an example! + */ + + int main () + { + printf("%ld\n", f(15)); + return 0; +-} +\ No newline at end of file ++} ++ ++/* incomplete lines are bad! */ + +commit 100b61a6f2f720f812620a9d10afb3a960ccb73c +Author: Thomas Rast <trast@student.ethz.ch> +Date: Thu Feb 28 10:48:10 2013 +0100 + + change to an incomplete line at end + +diff --git a/a.c b/a.c +--- a/a.c ++++ b/a.c +@@ -4,19 +4,19 @@ + long f(long x) + { + int s = 0; + while (x) { + x >>= 1; + s++; + } + return s; + } + + /* + * This is only an example! + */ + + int main () + { + printf("%ld\n", f(15)); + return 0; +-} ++} +\ No newline at end of file + +commit 39b6eb2d5b706d3322184a169f666f25ed3fbd00 +Author: Thomas Rast <trast@student.ethz.ch> +Date: Thu Feb 28 10:45:41 2013 +0100 + + touch comment + +diff --git a/a.c b/a.c +--- a/a.c ++++ b/a.c +@@ -3,19 +3,19 @@ + long f(long x) + { + int s = 0; + while (x) { + x >>= 1; + s++; + } + return s; + } + + /* +- * A comment. ++ * This is only an example! + */ + + int main () + { + printf("%ld\n", f(15)); + return 0; + } + commit a6eb82647d5d67f893da442f8f9375fd89a3b1e2 Author: Thomas Rast <trast@student.ethz.ch> Date: Thu Feb 28 10:45:16 2013 +0100 @@ -7,7 +104,7 @@ Date: Thu Feb 28 10:45:16 2013 +0100 diff --git a/a.c b/a.c --- a/a.c +++ b/a.c -@@ -3,9 +3,9 @@ +@@ -3,19 +3,19 @@ -int f(int x) +long f(long x) { @@ -18,6 +115,17 @@ diff --git a/a.c b/a.c } return s; } + + /* + * A comment. + */ + + int main () + { +- printf("%d\n", f(15)); ++ printf("%ld\n", f(15)); + return 0; + } commit f04fb20f2c77850996cba739709acc6faecc58f7 Author: Thomas Rast <trast@student.ethz.ch> @@ -28,7 +136,7 @@ Date: Thu Feb 28 10:44:55 2013 +0100 diff --git a/a.c b/a.c --- a/a.c +++ b/a.c -@@ -3,8 +3,9 @@ +@@ -3,18 +3,19 @@ int f(int x) { int s = 0; @@ -38,6 +146,16 @@ diff --git a/a.c b/a.c } + return s; } + + /* + * A comment. + */ + + int main () + { + printf("%d\n", f(15)); + return 0; + } commit de4c48ae814792c02a49c4c3c0c757ae69c55f6a Author: Thomas Rast <trast@student.ethz.ch> @@ -48,7 +166,7 @@ Date: Thu Feb 28 10:44:48 2013 +0100 diff --git a/a.c b/a.c --- /dev/null +++ b/a.c -@@ -0,0 +3,8 @@ +@@ -0,0 +3,18 @@ +int f(int x) +{ + int s = 0; @@ -57,3 +175,13 @@ diff --git a/a.c b/a.c + s++; + } +} ++ ++/* ++ * A comment. ++ */ ++ ++int main () ++{ ++ printf("%d\n", f(15)); ++ return 0; ++} |