[PATCH 5/5] over: simplify read-only vs read-write checking

[Eric Wong <e@yhbt.net>]

No need to call ref() and do a string comparison.  Add some
extra tests using the {ReadOnly} attribute in DBI.pm.
---
 lib/PublicInbox/Over.pm    | 7 +++----
 lib/PublicInbox/OverIdx.pm | 2 +-
 t/over.t                   | 7 ++++++-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/lib/PublicInbox/Over.pm b/lib/PublicInbox/Over.pm
index 0f8f433a..57c82bfc 100644
--- a/lib/PublicInbox/Over.pm
+++ b/lib/PublicInbox/Over.pm
@@ -14,17 +14,16 @@ use Compress::Zlib qw(uncompress);
 use constant DEFAULT_LIMIT => 1000;
 
 sub dbh_new {
-	my ($self) = @_;
-	my $ro = ref($self) eq 'PublicInbox::Over';
+	my ($self, $rw) = @_;
 	my $f = $self->{filename};
-	if (!$ro && !-f $f) { # SQLite defaults mode to 0644, we want 0666
+	if ($rw && !-f $f) { # SQLite defaults mode to 0644, we want 0666
 		open my $fh, '+>>', $f or die "failed to open $f: $!";
 	}
 	my $dbh = DBI->connect("dbi:SQLite:dbname=$f",'','', {
 		AutoCommit => 1,
 		RaiseError => 1,
 		PrintError => 0,
-		ReadOnly => $ro,
+		ReadOnly => !$rw,
 		sqlite_use_immediate_transaction => 1,
 	});
 	$dbh->{sqlite_unicode} = 1;
diff --git a/lib/PublicInbox/OverIdx.pm b/lib/PublicInbox/OverIdx.pm
index 5f1007aa..a966a710 100644
--- a/lib/PublicInbox/OverIdx.pm
+++ b/lib/PublicInbox/OverIdx.pm
@@ -20,7 +20,7 @@ use PublicInbox::Search;
 
 sub dbh_new {
 	my ($self) = @_;
-	my $dbh = $self->SUPER::dbh_new;
+	my $dbh = $self->SUPER::dbh_new(1);
 	$dbh->do('PRAGMA journal_mode = TRUNCATE');
 	$dbh->do('PRAGMA cache_size = 80000');
 	create_tables($dbh);
diff --git a/t/over.t b/t/over.t
index 4e630bcd..daa7176f 100644
--- a/t/over.t
+++ b/t/over.t
@@ -18,10 +18,15 @@ is($y, $x+1, 'tid increases');
 $x = $over->sid('hello-world');
 is(int($x), $x, 'integer sid');
 $y = $over->sid('hello-WORLD');
-is($y, $x+1, 'sid ncreases');
+is($y, $x+1, 'sid increases');
 is($over->sid('hello-world'), $x, 'idempotent');
+ok(!$over->{dbh}->{ReadOnly}, 'OverIdx is not ReadOnly');
 $over->disconnect;
 
+$over = PublicInbox::Over->new("$tmpdir/over.sqlite3");
+$over->connect;
+ok($over->{dbh}->{ReadOnly}, 'Over is ReadOnly');
+
 $over = PublicInbox::OverIdx->new("$tmpdir/over.sqlite3");
 $over->connect;
 is($over->sid('hello-world'), $x, 'idempotent across reopen');