test more complex stream

[scpubgit/DKit.git] / t / basic.t

diff --git a/t/basic.t b/t/basic.t
index 809c211..1655c85 100644 (file)
--- a/t/basic.t
+++ b/t/basic.t
@@ -2,8 +2,10 @@ use strictures 1;
 use Test::More;
 use aliased 'DX::Op::FromCode';
 use aliased 'DX::ArrayStream';
+use DX::ResultStream;
 use DX::Var;
 use DX::State;
+use Test::Exception;
 
 my @servers = qw(
   kitty.scsys.co.uk
@@ -34,36 +36,73 @@ sub bind_array {
   }
 }
 
+sub test_values {
+  my ($vars, $test) = @_;
+  sub {
+    my ($self, $state) = @_;
+    my @values = map $state->scope_var($_)->bound_value, @$vars;
+    if ($test->(@values)) {
+      return $state->then($self->next);
+    }
+    return $state->backtrack;
+  }
+}
+
 my $op = FromCode->new(
   code => bind_array(S => \@servers),
   next => FromCode->new(
-    code => sub {
-      my ($self, $state) = @_;
-      my $server = $state->scope_var('S')->bound_value;
-      if ($server =~ /\.example\.com$/) {
-        return $state->then($self->next);
-      }
-      return $state->backtrack;
-    },
+    code => test_values([ 'S' ], sub { $_[0] =~ /\.example\.com$/ })
   )
 );
 
-my %scope = map +($_ => $_), qw(S);
-my %by_id = map +($_ => DX::Var->new(id => $_)), qw(S);
+sub make_state {
+  my ($vars, $op) = @_;
 
-my $state = DX::State->new(
-  next_op => $op,
-  return_stack => [],
-  by_id => \%by_id,
-  scope => \%scope,
-  last_choice => []
-);
+  my %scope = map +($_ => $_), @{$vars};
+  my %by_id = map +($_ => DX::Var->new(id => $_)), @{$vars};
 
-while (my $op = $state->next_op) {
-  $state = $op->run($state);
-  ::Dwarn($state);
+  DX::State->new(
+    next_op => $op,
+    return_stack => [],
+    by_id => \%by_id,
+    scope => \%scope,
+    last_choice => []
+  );
 }
 
-is($state->scope_var('S')->bound_value, 'jim.example.com');
+my $stream = DX::ResultStream->new(for_state => make_state([ 'S' ], $op));
+
+is($stream->next->{'S'}, $_)
+  for qw(jim.example.com joe.example.com bob.example.com);
+
+is($stream->next, undef, 'No more');
+
+my $complex_op = FromCode->new(
+  code => bind_array(S => \@servers),
+  next => FromCode->new(
+    code => test_values([ 'S' ], sub { $_[0] =~ /\.example\.com$/ }),
+    next => FromCode->new(
+      code => bind_array(P => \@shells),
+      next => FromCode->new(
+        code => test_values([ qw(S P) ], sub { $shells{$_[1]}{$_[0]} }),
+      )
+    )
+  )
+);
+
+my $cstream = DX::ResultStream->new(
+  for_state => make_state([ qw(S P) ], $complex_op)
+);
+
+is_deeply(
+  [ $cstream->results ],
+  [
+    { P => 'csh', S => 'jim.example.com' },
+    { P => 'csh', S => 'joe.example.com' },
+    { P => 'bash', S => 'joe.example.com' },
+    { P => 'csh', S => 'bob.example.com' },
+  ],
+  'Complex stream'
+);
 
 done_testing;