t: fix severe &&-chain breakage

diff --git a/t/t4212-log-corrupt.sh b/t/t4212-log-corrupt.sh
index 93c7c366cfeffa46cc72665f6ce676bd37c3c2fe..67bd8ec020e7919a37c581d3ea7c6c12e70f4276 100755 (executable)
--- a/t/t4212-log-corrupt.sh
+++ b/t/t4212-log-corrupt.sh
@@ -14,7 +14,7 @@ test_expect_success 'setup' '
 '
 
 test_expect_success 'fsck notices broken commit' '
-       git fsck 2>actual &&
+       test_must_fail git fsck 2>actual &&
        test_i18ngrep invalid.author actual
 '
 
@@ -44,4 +44,47 @@ test_expect_success 'git log --format with broken author email' '
        test_cmp expect.err actual.err
 '
 
+munge_author_date () {
+       git cat-file commit "$1" >commit.orig &&
+       sed "s/^\(author .*>\) [0-9]*/\1 $2/" <commit.orig >commit.munge &&
+       git hash-object -w -t commit commit.munge
+}
+
+test_expect_success 'unparsable dates produce sentinel value' '
+       commit=$(munge_author_date HEAD totally_bogus) &&
+       echo "Date:   Thu Jan 1 00:00:00 1970 +0000" >expect &&
+       git log -1 $commit >actual.full &&
+       grep Date <actual.full >actual &&
+       test_cmp expect actual
+'
+
+test_expect_success 'unparsable dates produce sentinel value (%ad)' '
+       commit=$(munge_author_date HEAD totally_bogus) &&
+       echo >expect &&
+       git log -1 --format=%ad $commit >actual
+       test_cmp expect actual
+'
+
+# date is 2^64 + 1
+test_expect_success 'date parser recognizes integer overflow' '
+       commit=$(munge_author_date HEAD 18446744073709551617) &&
+       echo "Thu Jan 1 00:00:00 1970 +0000" >expect &&
+       git log -1 --format=%ad $commit >actual &&
+       test_cmp expect actual
+'
+
+# date is 2^64 - 2
+test_expect_success 'date parser recognizes time_t overflow' '
+       commit=$(munge_author_date HEAD 18446744073709551614) &&
+       echo "Thu Jan 1 00:00:00 1970 +0000" >expect &&
+       git log -1 --format=%ad $commit >actual &&
+       test_cmp expect actual
+'
+
+# date is within 2^63-1, but enough to choke glibc's gmtime
+test_expect_success 'absurdly far-in-future date' '
+       commit=$(munge_author_date HEAD 999999999999999999) &&
+       git log -1 --format=%ad $commit
+'
+
 test_done