hashmap: add string interning API

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index 208f56e5181fa57fc5dbf844d3287f1645741342..0218e96366ddd8659d5a78b42ffcfd415013114c 100755 (executable)
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -235,7 +235,7 @@ test_expect_success \
        'rm -f o e &&
         git rev-parse --verify "master@{2005-05-26 23:33:01}" >o 2>e &&
         test '"$B"' = $(cat o) &&
-        test "warning: Log .git/logs/'"$m has gap after $gd"'." = "$(cat e)"'
+        test "warning: Log for ref '"$m has gap after $gd"'." = "$(cat e)"'
 test_expect_success \
        'Query "master@{2005-05-26 23:38:00}" (middle of history)' \
        'rm -f o e &&
@@ -253,7 +253,7 @@ test_expect_success \
        'rm -f o e &&
         git rev-parse --verify "master@{2005-05-28}" >o 2>e &&
         test '"$D"' = $(cat o) &&
-        test "warning: Log .git/logs/'"$m unexpectedly ended on $ld"'." = "$(cat e)"'
+        test "warning: Log for ref '"$m unexpectedly ended on $ld"'." = "$(cat e)"'
 
 
 rm -f .git/$m .git/logs/$m expect
@@ -371,7 +371,7 @@ test_expect_success 'stdin fails on junk after quoted argument' '
 test_expect_success 'stdin fails create with no ref' '
        echo "create " >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: create line missing <ref>" err
+       grep "fatal: create: missing <ref>" err
 '
 
 test_expect_success 'stdin fails create with bad ref name' '
@@ -383,19 +383,19 @@ test_expect_success 'stdin fails create with bad ref name' '
 test_expect_success 'stdin fails create with no new value' '
        echo "create $a" >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: create $a missing <newvalue>" err
+       grep "fatal: create $a: missing <newvalue>" err
 '
 
 test_expect_success 'stdin fails create with too many arguments' '
        echo "create $a $m $m" >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: create $a has extra input:  $m" err
+       grep "fatal: create $a: extra input:  $m" err
 '
 
 test_expect_success 'stdin fails update with no ref' '
        echo "update " >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: update line missing <ref>" err
+       grep "fatal: update: missing <ref>" err
 '
 
 test_expect_success 'stdin fails update with bad ref name' '
@@ -407,19 +407,19 @@ test_expect_success 'stdin fails update with bad ref name' '
 test_expect_success 'stdin fails update with no new value' '
        echo "update $a" >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: update $a missing <newvalue>" err
+       grep "fatal: update $a: missing <newvalue>" err
 '
 
 test_expect_success 'stdin fails update with too many arguments' '
        echo "update $a $m $m $m" >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: update $a has extra input:  $m" err
+       grep "fatal: update $a: extra input:  $m" err
 '
 
 test_expect_success 'stdin fails delete with no ref' '
        echo "delete " >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: delete line missing <ref>" err
+       grep "fatal: delete: missing <ref>" err
 '
 
 test_expect_success 'stdin fails delete with bad ref name' '
@@ -431,13 +431,13 @@ test_expect_success 'stdin fails delete with bad ref name' '
 test_expect_success 'stdin fails delete with too many arguments' '
        echo "delete $a $m $m" >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: delete $a has extra input:  $m" err
+       grep "fatal: delete $a: extra input:  $m" err
 '
 
 test_expect_success 'stdin fails verify with too many arguments' '
        echo "verify $a $m $m" >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: verify $a has extra input:  $m" err
+       grep "fatal: verify $a: extra input:  $m" err
 '
 
 test_expect_success 'stdin fails option with unknown name' '
@@ -532,7 +532,7 @@ test_expect_success 'stdin create ref fails with bad new value' '
 test_expect_success 'stdin create ref fails with zero new value' '
        echo "create $c " >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: create $c given zero <newvalue>" err &&
+       grep "fatal: create $c: zero <newvalue>" err &&
        test_must_fail git rev-parse --verify -q $c
 '
 
@@ -556,7 +556,7 @@ test_expect_success 'stdin delete ref fails with wrong old value' '
 test_expect_success 'stdin delete ref fails with zero old value' '
        echo "delete $a " >stdin &&
        test_must_fail git update-ref --stdin <stdin 2>err &&
-       grep "fatal: delete $a given zero <oldvalue>" err &&
+       grep "fatal: delete $a: zero <oldvalue>" err &&
        git rev-parse $m >expect &&
        git rev-parse $a >actual &&
        test_cmp expect actual
@@ -697,7 +697,7 @@ test_expect_success 'stdin -z fails on unknown command' '
 test_expect_success 'stdin -z fails create with no ref' '
        printf $F "create " >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: create line missing <ref>" err
+       grep "fatal: create: missing <ref>" err
 '
 
 test_expect_success 'stdin -z fails create with bad ref name' '
@@ -709,7 +709,7 @@ test_expect_success 'stdin -z fails create with bad ref name' '
 test_expect_success 'stdin -z fails create with no new value' '
        printf $F "create $a" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: create $a missing <newvalue>" err
+       grep "fatal: create $a: unexpected end of input when reading <newvalue>" err
 '
 
 test_expect_success 'stdin -z fails create with too many arguments' '
@@ -721,32 +721,39 @@ test_expect_success 'stdin -z fails create with too many arguments' '
 test_expect_success 'stdin -z fails update with no ref' '
        printf $F "update " >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: update line missing <ref>" err
+       grep "fatal: update: missing <ref>" err
+'
+
+test_expect_success 'stdin -z fails update with too few args' '
+       printf $F "update $a" "$m" >stdin &&
+       test_must_fail git update-ref -z --stdin <stdin 2>err &&
+       grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err
 '
 
 test_expect_success 'stdin -z fails update with bad ref name' '
-       printf $F "update ~a" "$m" >stdin &&
+       printf $F "update ~a" "$m" "" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
        grep "fatal: invalid ref format: ~a" err
 '
 
-test_expect_success 'stdin -z treats empty new value as zeros' '
+test_expect_success 'stdin -z emits warning with empty new value' '
        git update-ref $a $m &&
        printf $F "update $a" "" "" >stdin &&
-       git update-ref -z --stdin <stdin &&
+       git update-ref -z --stdin <stdin 2>err &&
+       grep "warning: update $a: missing <newvalue>, treating as zero" err &&
        test_must_fail git rev-parse --verify -q $a
 '
 
 test_expect_success 'stdin -z fails update with no new value' '
        printf $F "update $a" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: update $a missing <newvalue>" err
+       grep "fatal: update $a: unexpected end of input when reading <newvalue>" err
 '
 
 test_expect_success 'stdin -z fails update with no old value' '
        printf $F "update $a" "$m" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: update $a missing <oldvalue>" err
+       grep "fatal: update $a: unexpected end of input when reading <oldvalue>" err
 '
 
 test_expect_success 'stdin -z fails update with too many arguments' '
@@ -758,7 +765,7 @@ test_expect_success 'stdin -z fails update with too many arguments' '
 test_expect_success 'stdin -z fails delete with no ref' '
        printf $F "delete " >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: delete line missing <ref>" err
+       grep "fatal: delete: missing <ref>" err
 '
 
 test_expect_success 'stdin -z fails delete with bad ref name' '
@@ -770,7 +777,7 @@ test_expect_success 'stdin -z fails delete with bad ref name' '
 test_expect_success 'stdin -z fails delete with no old value' '
        printf $F "delete $a" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: delete $a missing <oldvalue>" err
+       grep "fatal: delete $a: unexpected end of input when reading <oldvalue>" err
 '
 
 test_expect_success 'stdin -z fails delete with too many arguments' '
@@ -788,7 +795,7 @@ test_expect_success 'stdin -z fails verify with too many arguments' '
 test_expect_success 'stdin -z fails verify with no old value' '
        printf $F "verify $a" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: verify $a missing <oldvalue>" err
+       grep "fatal: verify $a: unexpected end of input when reading <oldvalue>" err
 '
 
 test_expect_success 'stdin -z fails option with unknown name' '
@@ -851,17 +858,28 @@ test_expect_success 'stdin -z update ref fails with bad old value' '
        test_must_fail git rev-parse --verify -q $c
 '
 
+test_expect_success 'stdin -z create ref fails when ref exists' '
+       git update-ref $c $m &&
+       git rev-parse "$c" >expect &&
+       printf $F "create $c" "$m~1" >stdin &&
+       test_must_fail git update-ref -z --stdin <stdin 2>err &&
+       grep "fatal: Cannot lock the ref '"'"'$c'"'"'" err &&
+       git rev-parse "$c" >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'stdin -z create ref fails with bad new value' '
+       git update-ref -d "$c" &&
        printf $F "create $c" "does-not-exist" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
        grep "fatal: create $c: invalid <newvalue>: does-not-exist" err &&
        test_must_fail git rev-parse --verify -q $c
 '
 
-test_expect_failure 'stdin -z create ref fails with empty new value' '
+test_expect_success 'stdin -z create ref fails with empty new value' '
        printf $F "create $c" "" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: create $c missing <newvalue>" err &&
+       grep "fatal: create $c: missing <newvalue>" err &&
        test_must_fail git rev-parse --verify -q $c
 '
 
@@ -885,7 +903,7 @@ test_expect_success 'stdin -z delete ref fails with wrong old value' '
 test_expect_success 'stdin -z delete ref fails with zero old value' '
        printf $F "delete $a" "$Z" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
-       grep "fatal: delete $a given zero <oldvalue>" err &&
+       grep "fatal: delete $a: zero <oldvalue>" err &&
        git rev-parse $m >expect &&
        git rev-parse $a >actual &&
        test_cmp expect actual