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git/t/t6301-for-each-ref-errors.sh

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t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
#!/bin/sh
test_description='for-each-ref errors for broken refs'
. ./test-lib.sh
ZEROS=$_z40
MISSING=abababababababababababababababababababab
test_expect_success setup '
git commit --allow-empty -m "Initial" &&
git tag testtag &&
git for-each-ref >full-list &&
git for-each-ref --format="%(objectname) %(refname)" >brief-list
'
for-each-ref: report broken references correctly If there is a loose reference file with invalid contents, "git for-each-ref" incorrectly reports the problem as being a missing object with name NULL_SHA1: $ echo '12345678' >.git/refs/heads/nonsense $ git for-each-ref fatal: missing object 0000000000000000000000000000000000000000 for refs/heads/nonsense With an explicit "--format" string, it can even report that the reference validly points at NULL_SHA1: $ git for-each-ref --format='%(objectname) %(refname)' 0000000000000000000000000000000000000000 refs/heads/nonsense $ echo $? 0 This has been broken since b7dd2d2 for-each-ref: Do not lookup objects when they will not be used (2009-05-27) , which changed for-each-ref from using for_each_ref() to using git_for_each_rawref() in order to avoid looking up the referred-to objects unnecessarily. (When "git for-each-ref" is given a "--format" string that doesn't include information about the pointed-to object, it does not look up the object at all, which makes it considerably faster. Iterating with DO_FOR_EACH_INCLUDE_BROKEN is essential to this optimization because otherwise for_each_ref() would itself need to check whether the object exists as part of its brokenness test.) But for_each_rawref() includes broken references in the iteration, and "git for-each-ref" doesn't itself reject references with REF_ISBROKEN. The result is that broken references are processed *as if* they had the value NULL_SHA1, which is the value stored in entries for broken references. Change "git for-each-ref" to emit warnings for references that are REF_ISBROKEN but to otherwise skip them. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:26 +02:00
test_expect_success 'Broken refs are reported correctly' '
t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
r=refs/heads/bogus &&
: >.git/$r &&
test_when_finished "rm -f .git/$r" &&
echo "warning: ignoring broken ref $r" >broken-err &&
git for-each-ref >out 2>err &&
tests: use test_i18n* functions to suppress false positives The test functions test_i18ncmp and test_i18ngrep pretend success if run under GETTEXT_POISON. By using those functions to test output which is correctly marked as translatable, enables one to detect if the strings newly marked for translation are from plumbing output. If they are indeed from plumbing, the test would fail, and the string should be unmarked, since it is not seen by users. Thus, it is productive to not have false positives when running the test under GETTEXT_POISON. This commit replaces normal test functions by their i18n aware variants in use-cases know to be correctly marked for translation, suppressing false positives. Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-17 22:21:07 +02:00
test_i18ncmp full-list out &&
test_i18ncmp broken-err err
t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
'
read_loose_refs(): treat NULL_SHA1 loose references as broken NULL_SHA1 is used to indicate an "invalid object name" throughout our code (and the code of other git implementations), so it is vastly more likely that an on-disk reference was set to this value due to a software bug than that NULL_SHA1 is the legitimate SHA-1 of an actual object. Therefore, if a loose reference has the value NULL_SHA1, consider it to be broken. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-03 15:51:59 +02:00
test_expect_success 'NULL_SHA1 refs are reported correctly' '
t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
r=refs/heads/zeros &&
echo $ZEROS >.git/$r &&
test_when_finished "rm -f .git/$r" &&
echo "warning: ignoring broken ref $r" >zeros-err &&
git for-each-ref >out 2>err &&
test_cmp full-list out &&
tests: use test_i18n* functions to suppress false positives The test functions test_i18ncmp and test_i18ngrep pretend success if run under GETTEXT_POISON. By using those functions to test output which is correctly marked as translatable, enables one to detect if the strings newly marked for translation are from plumbing output. If they are indeed from plumbing, the test would fail, and the string should be unmarked, since it is not seen by users. Thus, it is productive to not have false positives when running the test under GETTEXT_POISON. This commit replaces normal test functions by their i18n aware variants in use-cases know to be correctly marked for translation, suppressing false positives. Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-17 22:21:07 +02:00
test_i18ncmp zeros-err err &&
t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
git for-each-ref --format="%(objectname) %(refname)" >brief-out 2>brief-err &&
test_cmp brief-list brief-out &&
tests: use test_i18n* functions to suppress false positives The test functions test_i18ncmp and test_i18ngrep pretend success if run under GETTEXT_POISON. By using those functions to test output which is correctly marked as translatable, enables one to detect if the strings newly marked for translation are from plumbing output. If they are indeed from plumbing, the test would fail, and the string should be unmarked, since it is not seen by users. Thus, it is productive to not have false positives when running the test under GETTEXT_POISON. This commit replaces normal test functions by their i18n aware variants in use-cases know to be correctly marked for translation, suppressing false positives. Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-17 22:21:07 +02:00
test_i18ncmp zeros-err brief-err
t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
'
test_expect_success 'Missing objects are reported correctly' '
r=refs/heads/missing &&
echo $MISSING >.git/$r &&
test_when_finished "rm -f .git/$r" &&
echo "fatal: missing object $MISSING for $r" >missing-err &&
test_must_fail git for-each-ref 2>err &&
tests: use test_i18n* functions to suppress false positives The test functions test_i18ncmp and test_i18ngrep pretend success if run under GETTEXT_POISON. By using those functions to test output which is correctly marked as translatable, enables one to detect if the strings newly marked for translation are from plumbing output. If they are indeed from plumbing, the test would fail, and the string should be unmarked, since it is not seen by users. Thus, it is productive to not have false positives when running the test under GETTEXT_POISON. This commit replaces normal test functions by their i18n aware variants in use-cases know to be correctly marked for translation, suppressing false positives. Signed-off-by: Vasco Almeida <vascomalmeida@sapo.pt> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-06-17 22:21:07 +02:00
test_i18ncmp missing-err err &&
t6301: new tests of for-each-ref error handling Add tests that for-each-ref correctly reports broken loose reference files and references that point at missing objects. In fact, two of these tests fail, because (1) NULL_SHA1 is not recognized as an invalid reference value, and (2) for-each-ref doesn't respect REF_ISBROKEN. Fixes to come. Note that when for-each-ref is run with a --format option that doesn't require the object to be looked up, then we should still notice if a loose reference file is corrupt or contains NULL_SHA1, but we don't notice if it points at a missing object because we don't do an object lookup. This is OK. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-06-02 17:57:25 +02:00
(
cat brief-list &&
echo "$MISSING $r"
) | sort -k 2 >missing-brief-expected &&
git for-each-ref --format="%(objectname) %(refname)" >brief-out 2>brief-err &&
test_cmp missing-brief-expected brief-out &&
test_must_be_empty brief-err
'
test_done
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