[PATCH 01/14] test_common: create_*: detect changes all parameters

[Eric Wong <e@80x24.org>]

Data::Dumper+B::Deparse seems fast enough to generate cache keys
with, so this makes updating and developing tests easier (as
opposed to forcing the developer to change the identifier).  The
main downside is we'll have to deal with cache expiration, but
"make clean" seems overly aggressive already (it keeps blowing
away the clones made by t/cindex-join.t :<)
---
 lib/PublicInbox/TestCommon.pm | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/lib/PublicInbox/TestCommon.pm b/lib/PublicInbox/TestCommon.pm
index 361a2356..8e7eb950 100644
--- a/lib/PublicInbox/TestCommon.pm
+++ b/lib/PublicInbox/TestCommon.pm
@@ -793,6 +793,19 @@ our %COMMIT_ENV = (
 	GIT_COMMITTER_EMAIL => 'c@example.com',
 );
 
+# for memoizing based on coderefs and various create_* params
+sub my_sum {
+	require PublicInbox::SHA;
+	require Data::Dumper;
+	my $d = Data::Dumper->new(\@_);
+	$d->$_(1) for qw(Deparse Sortkeys Terse);
+	my @l = split /\n/s, $d->Dump;
+	@l = grep !/\$\^H\{.+?[A-Z]+\(0x[0-9a-f]+\)/, @l; # autodie addresses
+	my @addr = grep /[A-Za-z]+\(0x[0-9a-f]+\)/, @l;
+	xbail 'undumpable addresses: ', \@addr if @addr;
+	substr PublicInbox::SHA::sha256_hex(join('', @l)), 0, 8;
+}
+
 sub create_coderepo ($$;@) {
 	my $ident = shift;
 	my $cb = pop;
@@ -801,15 +814,12 @@ sub create_coderepo ($$;@) {
 	require PublicInbox::Import;
 	my ($base) = ($0 =~ m!\b([^/]+)\.[^\.]+\z!);
 	my ($db) = (PublicInbox::Import::default_branch() =~ m!([^/]+)\z!);
-	my $dir = "t/data-gen/$base.$ident-$db";
-	my $new = !-d $dir;
-	if ($new && !CORE::mkdir($dir)) {
-		my $err = $!;
-		-d $dir or xbail "mkdir($dir): $err";
-	}
+	my $tmpdir = delete $opt{tmpdir};
+	my $dir = "t/data-gen/$base.$ident-".my_sum($db, $cb, \%opt);
+	require File::Path;
+	my $new = File::Path::make_path($dir);
 	my $lk = PublicInbox::Lock->new("$dir/creat.lock");
 	my $scope = $lk->lock_for_scope;
-	my $tmpdir = delete $opt{tmpdir};
 	if (!-f "$dir/creat.stamp") {
 		opendir(my $dfh, '.');
 		chdir($dir);
@@ -832,12 +842,10 @@ sub create_inbox ($;@) {
 	require PublicInbox::Import;
 	my ($base) = ($0 =~ m!\b([^/]+)\.[^\.]+\z!);
 	my ($db) = (PublicInbox::Import::default_branch() =~ m!([^/]+)\z!);
-	my $dir = "t/data-gen/$base.$ident-$db";
-	my $new = !-d $dir;
-	if ($new && !mkdir($dir)) {
-		my $err = $!;
-		-d $dir or xbail "mkdir($dir): $err";
-	}
+	my $tmpdir = delete $opt{tmpdir};
+	my $dir = "t/data-gen/$base.$ident-".my_sum($db, $cb, \%opt);
+	require File::Path;
+	my $new = File::Path::make_path($dir);
 	my $lk = PublicInbox::Lock->new("$dir/creat.lock");
 	$opt{inboxdir} = File::Spec->rel2abs($dir);
 	$opt{name} //= $ident;
@@ -846,7 +854,6 @@ sub create_inbox ($;@) {
 	$pre_cb->($dir) if $pre_cb && $new;
 	$opt{-no_fsync} = 1;
 	my $no_gc = delete $opt{-no_gc};
-	my $tmpdir = delete $opt{tmpdir};
 	my $addr = $opt{address} // [];
 	$opt{-primary_address} //= $addr->[0] // "$ident\@example.com";
 	my $parallel = delete($opt{importer_parallel}) // 0;