diff options
Diffstat (limited to 't/04else.t')
| -rw-r--r-- | t/04else.t | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/t/04else.t b/t/04else.t new file mode 100644 index 0000000..2cbc546 --- /dev/null +++ b/t/04else.t @@ -0,0 +1,259 @@ +#!/usr/bin/perl + +use strict; +use warnings; + +use Test::More; +use Test::Fatal; +use Test::Refcount; +use Test::Identity; + +use Future; + +# else success +{ + my $f1 = Future->new; + + my $fseq = $f1->else( + sub { die "else of successful Future should not be invoked" } + ); + + ok( defined $fseq, '$fseq defined' ); + isa_ok( $fseq, "Future", '$fseq' ); + + is_oneref( $fseq, '$fseq has refcount 1 initially' ); + + $f1->done( results => "here" ); + + is_deeply( [ $fseq->get ], [ results => "here" ], '$fseq succeeds when $f1 succeeds' ); + + undef $f1; + is_oneref( $fseq, '$fseq has refcount 1 before EOF' ); +} + +# else failure +{ + my $f1 = Future->new; + + my $f2; + my $fseq = $f1->else( + sub { + is( $_[0], "f1 failure\n", 'then fail block passed result of $f1' ); + return $f2 = Future->new; + } + ); + + ok( defined $fseq, '$fseq defined' ); + isa_ok( $fseq, "Future", '$fseq' ); + + is_oneref( $fseq, '$fseq has refcount 1 initially' ); + + ok( !$f2, '$f2 not yet defined before $f1 fails' ); + + $f1->fail( "f1 failure\n" ); + + undef $f1; + is_oneref( $fseq, '$fseq has refcount 1 after $f1 fail and dropped' ); + + ok( defined $f2, '$f2 now defined after $f1 fails' ); + + ok( !$fseq->is_ready, '$fseq not yet done before $f2 done' ); + + $f2->done( results => "here" ); + + ok( $fseq->is_ready, '$fseq is done after $f2 done' ); + is_deeply( [ $fseq->get ], [ results => "here" ], '$fseq->get returns results' ); + + undef $f2; + is_oneref( $fseq, '$fseq has refcount 1 before EOF' ); +} + +# Double failure +{ + my $f1 = Future->new; + + my $f2; + my $fseq = $f1->else( + sub { return $f2 = Future->new } + ); + + $f1->fail( "First failure\n" ); + $f2->fail( "Another failure\n" ); + + is( scalar $fseq->failure, "Another failure\n", '$fseq fails when $f2 fails' ); +} + +# code dies +{ + my $f1 = Future->new; + + my $fseq = $f1->else( sub { + die "It fails\n"; + } ); + + ok( !defined exception { $f1->fail( "bork" ) }, 'exception not propagated from fail call' ); + + ok( $fseq->is_ready, '$fseq is ready after code exception' ); + is( scalar $fseq->failure, "It fails\n", '$fseq->failure after code exception' ); +} + +# immediate fail +{ + my $f1 = Future->fail( "Failure\n" ); + + my $f2; + my $fseq = $f1->else( + sub { return $f2 = Future->new } + ); + + ok( defined $f2, '$f2 defined for immediate fail' ); + + $f2->fail( "Another failure\n" ); + + ok( $fseq->is_ready, '$fseq already ready for immediate fail' ); + is( scalar $fseq->failure, "Another failure\n", '$fseq->failure for immediate fail' ); +} + +# immediate done +{ + my $f1 = Future->done( "It works" ); + + my $fseq = $f1->else( + sub { die "else block invoked for immediate done Future" } + ); + + ok( $fseq->is_ready, '$fseq already ready for immediate done' ); + is( scalar $fseq->get, "It works", '$fseq->get for immediate done' ); +} + +# else cancel +{ + my $f1 = Future->new; + my $fseq = $f1->else( sub { die "else of cancelled Future should not be invoked" } ); + + $fseq->cancel; + + ok( $f1->is_cancelled, '$f1 is cancelled by $fseq cancel' ); + + $f1 = Future->new; + my $f2; + $fseq = $f1->else( sub { return $f2 = Future->new } ); + + $f1->fail( "A failure\n" ); + $fseq->cancel; + + ok( $f2->is_cancelled, '$f2 cancelled by $fseq cancel' ); +} + +# Void context raises a warning +{ + my $warnings; + local $SIG{__WARN__} = sub { $warnings .= $_[0]; }; + + Future->done->else( + sub { Future->new } + ); + like( $warnings, + qr/^Calling ->else in void context /, + 'Warning in void context' ); +} + +# Non-Future return raises exception +{ + my $f1 = Future->new; + + my $file = __FILE__; + my $line = __LINE__+1; + my $fseq = $f1->else( sub {} ); + my $fseq2 = $f1->else( sub { Future->done } ); + + ok( !exception { $f1->fail( "failed\n" ) }, + '->fail with non-Future return from ->else does not die' ); + + like( $fseq->failure, + qr/^Expected __ANON__\(\Q$file\E line $line\) to return a Future/, + 'Failure from non-Future return from ->else' ); + + ok( $fseq2->is_ready, '$fseq2 is ready after failure of $fseq' ); + + my $fseq3; + ok( !exception { $fseq3 = $f1->else( sub {} ) }, + 'non-Future return from ->else on immediate does not die' ); + + like( $fseq3->failure, + qr/^Expected __ANON__\(.*\) to return a Future/, + 'Failure from non-Future return from ->else on immediate' ); +} + +# else_with_f +{ + my $f1 = Future->new; + + my $f2; + my $fseq = $f1->else_with_f( + sub { + identical( $_[0], $f1, 'else_with_f block passed $f1' ); + is( $_[1], "f1 failure\n", 'else_with_f block pased failure of $f1' ); + return $f2 = Future->new; + } + ); + + ok( defined $fseq, '$fseq defined' ); + + $f1->fail( "f1 failure\n" ); + + ok( defined $f2, '$f2 defined after $f1->fail' ); + + $f2->done( "f2 result" ); + + ok( $fseq->is_ready, '$fseq is done after $f2 done' ); + is( scalar $fseq->get, "f2 result", '$fseq->get returns results' ); +} + +# else_done +{ + my $f1 = Future->new; + + my $fseq = $f1->else_done( second => "result" ); + + $f1->fail( first => ); + + ok( $fseq->is_ready, '$fseq done after $f1 done' ); + is_deeply( [ $fseq->get ], [ second => "result" ], '$fseq->get returns result for else_done' ); + + my $fseq2 = $f1->else_done( third => "result" ); + + ok( $fseq2->is_ready, '$fseq2 done after ->else_done on immediate' ); + is_deeply( [ $fseq2->get ], [ third => "result" ], '$fseq2->get returns result for else_done on immediate' ); + + my $f2 = Future->new; + $fseq = $f2->else_done( "result2" ); + $f2->done( "result" ); + + is( scalar $fseq->get, "result", '->else_done ignores success' ); +} + +# else_fail +{ + my $f1 = Future->new; + + my $fseq = $f1->else_fail( second => "result" ); + + $f1->fail( first => ); + + ok( $fseq->is_ready, '$fseq done after $f1 done' ); + is_deeply( [ $fseq->failure ], [ second => "result" ], '$fseq->failure returns result for else_fail' ); + + my $fseq2 = $f1->else_fail( third => "result" ); + + ok( $fseq2->is_ready, '$fseq2 done after ->else_fail on immediate' ); + is_deeply( [ $fseq2->failure ], [ third => "result" ], '$fseq2->failure returns result for else_fail on immediate' ); + + my $f2 = Future->new; + $fseq = $f2->else_fail( "failure" ); + $f2->done( "result" ); + + is( scalar $fseq->get, "result", '->else_fail ignores success' ); +} + +done_testing; |