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|
#!/usr/bin/perl
use v5.14;
use warnings;
use Test2::V0;
use Syntax::Keyword::Try;
# try success
{
my $s;
try {
$s = 1;
}
catch ($e) {
$s = 2;
}
is( $s, 1, 'sucessful try{} runs' );
}
# try catches
{
my $s;
ok( eval {
try {
die "oopsie";
}
catch ($e) { }
$s = 3;
"ok";
}, 'try { die } is not fatal' );
is( $s, 3, 'code after try{} runs' );
}
# exceptions that are false
{
my $caught;
try {
die FALSE->new;
}
catch ($e) {
$caught++;
}
ok( $caught, 'catch{} sees a false exception' );
{
package FALSE;
use overload 'bool' => sub { 0 };
sub new { bless [], shift }
}
}
# catch sees exception
{
my $caught;
try {
die "oopsie";
}
catch ($e) {
$caught = $e;
}
like( $caught, qr/^oopsie at /, 'catch{} sees $@' );
}
# catch block executes
{
my $s;
try {
die "oopsie";
}
catch ($e) {
$s = 4;
}
is( $s, 4, 'catch{} of failed try{} runs' );
}
# catch can rethrow
{
my $caught;
ok( !eval {
try { die "oopsie"; }
catch ($e) { $caught = $e; die $e }
}, 'die in catch{} is fatal' );
my $e = $@;
like( $e, qr/^oopsie at /, 'exception is thrown' );
like( $caught, qr/^oopsie at /, 'exception was seen by catch{}' );
}
# catch without VAR
{
try {
die "caught\n";
}
catch {
my $e = $@;
is( $e, "caught\n", 'exception visible in $@' );
}
}
# catch lexical does not retain
{
my $destroyed;
sub Canary::DESTROY { $destroyed++ }
try {
die bless [], "Canary";
}
catch ($e) {
# don't touch $e
}
ok( $destroyed, 'catch ($var) does not retain value' );
}
{
no Syntax::Keyword::Try;
sub try { return "normal function" }
is( try, "normal function", 'try() parses as a normal function call' );
}
done_testing;
|
