Commit | Line | Data |
60cda014 |
1 | use strictures 1; |
2 | use Test::More; |
3 | use aliased 'DX::Op::FromCode'; |
4 | use aliased 'DX::ArrayStream'; |
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5 | use DX::ResultStream; |
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6 | use DX::Var; |
7 | use DX::State; |
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8 | use Test::Exception; |
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9 | |
10 | my @servers = qw( |
11 | kitty.scsys.co.uk |
12 | jim.example.com |
13 | joe.example.com |
14 | pryde.scsys.co.uk |
15 | bob.example.com |
16 | ); |
17 | |
18 | my @shells = qw(csh bash); |
19 | |
20 | my %shells = ( |
21 | bash => { map +($_ => 1), |
22 | qw(joe.example.com kitty.scsys.co.uk pryde.scsys.co.uk) }, |
23 | csh => { map +($_ => 1), |
24 | qw(jim.example.com joe.example.com bob.example.com) }, |
25 | ); |
26 | |
27 | sub bind_array { |
28 | my ($var, $array) = @_; |
29 | sub { |
30 | my ($self, $state) = @_; |
31 | $state->bind_stream_then( |
32 | $state->scope_var($var), |
33 | ArrayStream->from_array(@$array), |
34 | $self->next |
35 | ) |
36 | } |
37 | } |
38 | |
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39 | sub test_values { |
40 | my ($vars, $test) = @_; |
41 | sub { |
42 | my ($self, $state) = @_; |
43 | my @values = map $state->scope_var($_)->bound_value, @$vars; |
44 | if ($test->(@values)) { |
45 | return $state->then($self->next); |
46 | } |
47 | return $state->backtrack; |
48 | } |
49 | } |
50 | |
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51 | sub make_op { |
52 | my ($inner) = @_; |
53 | FromCode->new( |
54 | code => bind_array(S => \@servers), |
55 | next => FromCode->new( |
56 | code => test_values([ 'S' ], sub { $_[0] =~ /\.example\.com$/ }), |
57 | next => $inner, |
58 | ) |
59 | ); |
60 | } |
61 | |
62 | my $op = make_op; |
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63 | |
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64 | sub make_state { |
65 | my ($vars, $op) = @_; |
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66 | |
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67 | my %scope = map +($_ => $_), @{$vars}; |
68 | my %by_id = map +($_ => DX::Var->new(id => $_)), @{$vars}; |
69 | |
70 | DX::State->new( |
71 | next_op => $op, |
72 | return_stack => [], |
73 | by_id => \%by_id, |
74 | scope => \%scope, |
75 | last_choice => [] |
76 | ); |
77 | } |
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78 | |
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79 | my $stream = DX::ResultStream->new(for_state => make_state([ 'S' ], $op)); |
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80 | |
81 | is($stream->next->{'S'}, $_) |
82 | for qw(jim.example.com joe.example.com bob.example.com); |
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83 | |
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84 | is($stream->next, undef, 'No more'); |
85 | |
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86 | my $complex_op = FromCode->new( |
87 | code => bind_array(S => \@servers), |
88 | next => FromCode->new( |
89 | code => test_values([ 'S' ], sub { $_[0] =~ /\.example\.com$/ }), |
90 | next => FromCode->new( |
91 | code => bind_array(P => \@shells), |
92 | next => FromCode->new( |
93 | code => test_values([ qw(S P) ], sub { $shells{$_[1]}{$_[0]} }), |
94 | ) |
95 | ) |
96 | ) |
97 | ); |
98 | |
99 | my $cstream = DX::ResultStream->new( |
100 | for_state => make_state([ qw(S P) ], $complex_op) |
101 | ); |
102 | |
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103 | is_deeply( |
104 | [ $cstream->results ], |
105 | [ |
106 | { P => 'csh', S => 'jim.example.com' }, |
107 | { P => 'csh', S => 'joe.example.com' }, |
108 | { P => 'bash', S => 'joe.example.com' }, |
109 | { P => 'csh', S => 'bob.example.com' }, |
110 | ], |
111 | 'Complex stream' |
112 | ); |
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113 | |
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114 | my $inner_op = make_op(FromCode->new( |
115 | code => sub { |
116 | my ($self, $state) = @_; |
117 | my @stack = @{$state->return_stack}; |
118 | my $top = pop @stack; |
119 | $state->new(%$state, return_stack => \@stack, next_op => $top); |
120 | } |
121 | )); |
122 | |
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123 | my $call_op = FromCode->new( |
124 | code => sub { |
125 | my ($self, $state) = @_; |
126 | my @rst = @{$state->return_stack}; |
127 | my $save_scope = $state->scope; |
128 | my %scope = (S => $save_scope->{S}); |
129 | my $ret_op = FromCode->new( |
130 | code => sub { $_[1]->new(%{$_[1]}, scope => $save_scope, next_op => $_[0]->next) }, |
131 | next => $self->next, |
132 | ); |
133 | $state->new(%$state, |
134 | scope => \%scope, |
135 | return_stack => [ @rst, $ret_op ], |
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136 | next_op => $inner_op |
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137 | ); |
138 | }, |
139 | next => FromCode->new( |
140 | code => bind_array(P => \@shells), |
141 | next => FromCode->new( |
142 | code => test_values([ qw(S P) ], sub { $shells{$_[1]}{$_[0]} }), |
143 | ) |
144 | ) |
145 | ); |
146 | |
147 | my $callstream = DX::ResultStream->new( |
148 | for_state => make_state([ qw(S P) ], $call_op) |
149 | ); |
150 | |
151 | is_deeply( |
152 | [ $callstream->results ], |
153 | [ |
154 | { P => 'csh', S => 'jim.example.com' }, |
155 | { P => 'csh', S => 'joe.example.com' }, |
156 | { P => 'bash', S => 'joe.example.com' }, |
157 | { P => 'csh', S => 'bob.example.com' }, |
158 | ], |
159 | 'Call stream' |
160 | ); |
161 | |
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162 | done_testing; |