82 lines
1.9 KiB
Perl
82 lines
1.9 KiB
Perl
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#!./perl
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# $RCSfile: eval.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:48 $
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print "1..23\n";
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eval 'print "ok 1\n";';
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if ($@ eq '') {print "ok 2\n";} else {print "not ok 2\n";}
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eval "\$foo\n = # this is a comment\n'ok 3';";
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print $foo,"\n";
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eval "\$foo\n = # this is a comment\n'ok 4\n';";
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print $foo;
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print eval '
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$foo =;'; # this tests for a call through yyerror()
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if ($@ =~ /line 2/) {print "ok 5\n";} else {print "not ok 5\n";}
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print eval '$foo = /'; # this tests for a call through fatal()
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if ($@ =~ /Search/) {print "ok 6\n";} else {print "not ok 6\n";}
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print eval '"ok 7\n";';
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# calculate a factorial with recursive evals
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$foo = 5;
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$fact = 'if ($foo <= 1) {1;} else {push(@x,$foo--); (eval $fact) * pop(@x);}';
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$ans = eval $fact;
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if ($ans == 120) {print "ok 8\n";} else {print "not ok 8\n";}
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$foo = 5;
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$fact = 'local($foo)=$foo; $foo <= 1 ? 1 : $foo-- * (eval $fact);';
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$ans = eval $fact;
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if ($ans == 120) {print "ok 9\n";} else {print "not ok 9 $ans\n";}
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open(try,'>Op.eval');
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print try 'print "ok 10\n"; unlink "Op.eval";',"\n";
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close try;
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do 'Op.eval'; print $@;
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# Test the singlequoted eval optimizer
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$i = 11;
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for (1..3) {
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eval 'print "ok ", $i++, "\n"';
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}
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eval {
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print "ok 14\n";
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die "ok 16\n";
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1;
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} || print "ok 15\n$@";
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# check whether eval EXPR determines value of EXPR correctly
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{
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my @a = qw(a b c d);
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my @b = eval @a;
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print "@b" eq '4' ? "ok 17\n" : "not ok 17\n";
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print $@ ? "not ok 18\n" : "ok 18\n";
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my $a = q[defined(wantarray) ? (wantarray ? ($b='A') : ($b='S')) : ($b='V')];
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my $b;
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@a = eval $a;
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print "@a" eq 'A' ? "ok 19\n" : "# $b\nnot ok 19\n";
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print $b eq 'A' ? "ok 20\n" : "# $b\nnot ok 20\n";
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$_ = eval $a;
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print $b eq 'S' ? "ok 21\n" : "# $b\nnot ok 21\n";
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eval $a;
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print $b eq 'V' ? "ok 22\n" : "# $b\nnot ok 22\n";
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$b = 'wrong';
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$x = sub {
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my $b = "right";
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print eval('"$b"') eq $b ? "ok 23\n" : "not ok 23\n";
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};
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&$x();
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}
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