1 files changed, 147 insertions, 0 deletions
diff --git a/t/12needs_all.t b/t/12needs_all.t
new file mode 100644
index 0000000..fe9cd36
--- /dev/null
+++ b/t/12needs_all.t
@@ -0,0 +1,147 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More;
+use Test::Fatal;
+use Test::Refcount;
+
+use Future;
+
+# All done
+{
+   my $f1 = Future->new;
+   my $f2 = Future->new;
+
+   my $future = Future->needs_all( $f1, $f2 );
+   is_oneref( $future, '$future has refcount 1 initially' );
+
+   # Two refs; one lexical here, one in $future
+   is_refcount( $f1, 2, '$f1 has refcount 2 after adding to ->needs_all' );
+   is_refcount( $f2, 2, '$f2 has refcount 2 after adding to ->needs_all' );
+
+   my $ready;
+   $future->on_ready( sub { $ready++ } );
+
+   ok( !$future->is_ready, '$future not yet ready' );
+
+   $f1->done( one => 1 );
+   $f2->done( two => 2 );
+
+   is( $ready, 1, '$future is now ready' );
+
+   ok( $future->is_ready, '$future now ready after f2 ready' );
+   is_deeply( [ $future->get ], [ one => 1, two => 2 ], '$future->get after f2 ready' );
+
+   is_refcount( $future, 1, '$future has refcount 1 at end of test' );
+   undef $future;
+
+   is_refcount( $f1, 1, '$f1 has refcount 1 at end of test' );
+   is_refcount( $f2, 1, '$f2 has refcount 1 at end of test' );
+}
+
+# One fails
+{
+   my $f1 = Future->new;
+   my $f2 = Future->new;
+   my $c2;
+   $f2->on_cancel( sub { $c2++ } );
+
+   my $future = Future->needs_all( $f1, $f2 );
+
+   my $ready;
+   $future->on_ready( sub { $ready++ } );
+
+   ok( !$future->is_ready, '$future not yet ready' );
+
+   $f1->fail( "It fails" );
+
+   is( $ready, 1, '$future is now ready' );
+
+   ok( $future->is_ready, '$future now ready after f1 fails' );
+   is( $future->failure, "It fails", '$future->failure yields exception' );
+   my $file = __FILE__;
+   my $line = __LINE__ + 1;
+   like( exception { $future->get }, qr/^It fails at \Q$file line $line\E\.?\n$/, '$future->get throws exception' );
+
+   is( $c2, 1, 'Unfinished child future cancelled on failure' );
+
+   is_deeply( [ $future->pending_futures ],
+              [],
+              '$future->pending_futures after $f1 failure' );
+
+   is_deeply( [ $future->ready_futures ],
+              [ $f1, $f2 ],
+              '$future->ready_futures after $f1 failure' );
+
+   is_deeply( [ $future->done_futures ],
+              [],
+              '$future->done_futures after $f1 failure' );
+
+   is_deeply( [ $future->failed_futures ],
+              [ $f1 ],
+              '$future->failed_futures after $f1 failure' );
+
+   is_deeply( [ $future->cancelled_futures ],
+              [ $f2 ],
+              '$future->cancelled_futures after $f1 failure' );
+}
+
+# immediately done
+{
+   my $future = Future->needs_all( Future->done );
+
+   ok( $future->is_ready, '$future of already-done sub already ready' );
+}
+
+# immediately fails
+{
+   my $future = Future->needs_all( Future->fail("F1"), Future->done );
+
+   ok( $future->is_ready, '$future of already-failed sub already ready' );
+}
+
+# cancel propagation
+{
+   my $f1 = Future->new;
+   my $c1;
+   $f1->on_cancel( sub { $c1++ } );
+
+   my $f2 = Future->new;
+   my $c2;
+   $f2->on_cancel( sub { $c2++ } );
+
+   my $future = Future->needs_all( $f1, $f2 );
+
+   $f2->done;
+
+   $future->cancel;
+
+   is( $c1, 1,     '$future->cancel marks subs cancelled' );
+   is( $c2, undef, '$future->cancel ignores ready subs' );
+}
+
+# cancelled convergent
+{
+   my $f1 = Future->new;
+   my $f2 = Future->new;
+
+   my $future = Future->needs_all( $f1, $f2 );
+
+   $f1->cancel;
+
+   ok( $future->is_ready, '$future of cancelled sub is ready after first cancellation' );
+
+   like( scalar $future->failure, qr/ cancelled/, 'Failure mentions cancelled' );
+}
+
+# needs_all on none
+{
+   my $f = Future->needs_all( () );
+
+   ok( $f->is_ready, 'needs_all on no Futures already done' );
+   is_deeply( [ $f->get ], [], '->get on empty needs_all is empty' );
+}
+
+done_testing;