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|
# test
package Eval::Context ;
use strict ;
use warnings ;
use Data::TreeDumper ;
use Test::More ;
use Data::Dumper ;
#----------------------------------------------------------
package some_object ;
use strict ;
use warnings ;
sub new {bless { VALUE => $_[1] }, $_[0];}
sub GetValue {$_[0]->{VALUE} ;}
sub AddOne{$_[0]->{VALUE} += 1 ;}
sub GetDump {Data::Dumper->Dump([$_[0]]) ;}
#----------------------------------------------------------
package main ;
use strict ;
use warnings ;
use Data::TreeDumper ;
use Test::Exception ;
use Test::Warn;
use Test::NoWarnings qw(had_no_warnings);
use Test::More 'no_plan';
use Test::Block qw($Plan);
use Eval::Context ;
use constant SETUP => 0 ;
use constant CODE => 1 ;
use constant EXPECTED_RESULT => 2 ;
{
local $Plan = {'divers tests' => 1} ;
# add test so code to be evaluated is dumped on error
my $context = new Eval::Context() ;
throws_ok
{
my $output = $context->eval(CODE => 'boom!', INSTALL_VARIABLES => []) ;
} qr/#end of context/, 'context displayed and error caught' ;
}
{
local $Plan = {'eval side only' => 29} ;
my $scalar_caller_side = 42 ;
my $scalar_caller_side_reference = $scalar_caller_side ;
my $string_caller_side = 'a string' ;
my $string_caller_side_reference = $string_caller_side ;
my %hash_caller_side = (A => 1, B => 2) ;
my %hash_caller_side_reference = %hash_caller_side ;
my @array_caller_side = ('A', 'B') ;
my @array_caller_side_reference = @array_caller_side ;
my $object = new some_object(5) ;
my $object_dump = $object->GetDump() ;
my $context = new Eval::Context() ;
# test the variables are made available on the eval side
# tests to verify nothing is changed from the eval side
for my $test
(
# SETUP CODE EXPECTED RESULT
[ [ '$variable', 42] , '$variable ;' , '$output , 42' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '$scalar' , $string_caller_side ] , '$scalar ;' , '$output , $string_caller_side' ],
[ [ '$scalar' , $string_caller_side ] , "\$scalar .= '*' ;\n" , '$output , $string_caller_side . "*"' ],
[ [ '$scalar' , $string_caller_side ] , "\$scalar .= '*' ;\n" , '$string_caller_side , $string_caller_side_reference' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '$scalar' , $scalar_caller_side ] , '$scalar' , '$output , $scalar_caller_side' ],
[ [ '$scalar' , $scalar_caller_side ] , "\$scalar += 2 ;\n" , '$output , $scalar_caller_side + 2' ],
[ [ '$scalar' , $scalar_caller_side ] , "\$scalar += 2 ;\n" , '$scalar_caller_side , $scalar_caller_side_reference' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '$hash' , \%hash_caller_side ] , "\$hash->{B} ;\n" , '$output , $hash_caller_side{B}' ],
[ [ '$hash' , \%hash_caller_side ] , "my \$r = \$hash->{B} + 1;\n\$r ;\n"
, '$output , $hash_caller_side{B} + 1' ],
[ [ '$hash' , \%hash_caller_side ] , "my \$r = \$hash->{B} + 1;\n \$r ;\n"
, '$hash_caller_side{B} , $hash_caller_side_reference{B}' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '%hash' , \%hash_caller_side ] , "\$hash{B} ;\n" , '$output , $hash_caller_side{B}' ],
[ [ '%hash' , \%hash_caller_side ] , "my \$r = \$hash{B} + 1;\n\$r ;\n"
, '$output , $hash_caller_side{B} + 1' ],
[ [ '%hash' , \%hash_caller_side ] , "my \$r = \$hash{B} + 1;\n \$r ;\n"
, '$hash_caller_side{B} , $hash_caller_side_reference{B}' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '$array' , \@array_caller_side ] , "\$array->[1] ;\n" , '$output , $array_caller_side[1]' ],
[ [ '$array' , \@array_caller_side ] , "my \$r = \$array->[1] . '*';\n\$r ;\n"
, '$output , $array_caller_side[1] . "*"' ],
[ [ '$array' , \@array_caller_side ] , "my \$r = \$array->[1] . '*';\n\$r ;\n"
, '$array_caller_side[1] , $array_caller_side_reference[1]' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '@array' , \@array_caller_side ] , "\$array[1] ;\n" , '$output , $array_caller_side[1]' ],
[ [ '@array' , \@array_caller_side ] , "my \$r = \$array[1] . '*';\n\$r ;\n "
, '$output , $array_caller_side[1] . "*"' ],
[ [ '@array' , \@array_caller_side ] , "my \$r = \$array[1] . '*';\n\$r ;\n "
, '$array_caller_side[1] , $array_caller_side_reference[1]' ],
#---------------------------------------------------------------------------------------------------------------------------------------
[ [ '$object' , $object ] , "\$object->GetValue() ;\n" , '$output , $object->GetValue()' ],
[ [ '$object' , $object ] , "\$object->AddOne() ;\n" , '$output , $object->GetValue() + 1' ],
[ [ '$object' , $object ] , "\$object->AddOne() ;\n" , '$object->GetDump() , $object_dump' ],
#---------------------------------------------------------------------------------------------------------------------------------------
)
{
my $output = $context->eval(CODE => $test->[CODE], INSTALL_VARIABLES => [$test->[SETUP]]) ;
eval qq~ is($test->[EXPECTED_RESULT], 'eval side only') or diag "latest code:\n\$context->{LATEST_CODE}\n" ~ ;
die $@ if $@ ;
}
throws_ok
{
my $output = $context->eval(CODE => '$variable', INSTALL_VARIABLES => [ ['my $variable = 42 ;'] ]) ;
} qr/Invalid variable definition/, 'no verbatim code' ;
throws_ok
{
my $output = $context->eval(CODE => '', INSTALL_VARIABLES => [ ['*variable', 42] ]) ;
} qr/Invalid variable type for '\*variable'/, 'unsupported type' ;
lives_ok
{
$context->eval(CODE => '$variable', INSTALL_VARIABLES => [ ['$variable', 42] ]) ;
} 'void context' ;
lives_ok
{
my $output = $context->eval(CODE => '$variable', INSTALL_VARIABLES => [ ['$variable', 42] ]) ;
is($output, 42, 'right value in scalar context') ;
} 'scalar context' ;
lives_ok
{
my @output = $context->eval(CODE => '$variable', INSTALL_VARIABLES => [ ['$variable', 42] ]) ;
is_deeply(\@output, [42], 'right value in array context') ;
} 'array context' ;
}
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