Blame t/author-lib-arithmetic-ternary-_rsft.t

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#!perl
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BEGIN {
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    unless ($ENV{AUTHOR_TESTING}) {
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        require Test::More;
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        Test::More::plan(skip_all =>
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                         'these tests are for testing by the author');
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    }
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}
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use strict;
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use warnings;
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use Test::More tests => 54713;
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###############################################################################
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# Read and load configuration file and backend library.
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use Config::Tiny ();
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my $config_file = 't/author-lib.ini';
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my $config = Config::Tiny -> read('t/author-lib.ini')
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  or die Config::Tiny -> errstr();
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# Read the library to test.
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our $LIB = $config->{_}->{lib};
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die "No library defined in file '$config_file'"
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  unless defined $LIB;
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die "Invalid library name '$LIB' in file '$config_file'"
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  unless $LIB =~ /^[A-Za-z]\w*(::\w+)*\z/;
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# Read the reference type(s) the library uses.
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our $REF = $config->{_}->{ref};
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die "No reference type defined in file '$config_file'"
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  unless defined $REF;
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die "Invalid reference type '$REF' in file '$config_file'"
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  unless $REF =~ /^[A-Za-z]\w*(::\w+)*\z/;
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# Load the library.
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eval "require $LIB";
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die $@ if $@;
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###############################################################################
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my $scalar_util_ok = eval { require Scalar::Util; };
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Scalar::Util -> import('refaddr') if $scalar_util_ok;
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diag "Skipping some tests since Scalar::Util is not installed."
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  unless $scalar_util_ok;
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can_ok($LIB, '_rsft');
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my @data;
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# Small numbers.
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for (my $x = 0; $x <= 100 ; ++ $x) {
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    for (my $n = 0; $n <= 5 ; ++ $n) {
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        for (my $b = 2; $b <= 16 ; ++ $b) {
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            my $y = int($x / ($b ** $n));
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            push @data, [ $x, $n, $b, $y ];
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        }
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    }
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}
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# Add data in data file.
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(my $datafile = $0) =~ s/\.t/.dat/;
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open DATAFILE, $datafile or die "$datafile: can't open file for reading: $!";
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while (<DATAFILE>) {
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    s/\s+\z//;
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    next if /^#/ || ! /\S/;
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    push @data, [ split /:/ ];
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}
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close DATAFILE or die "$datafile: can't close file after reading: $!";
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# List context.
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for (my $i = 0 ; $i <= $#data ; ++ $i) {
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    my ($in0, $in1, $in2, $out0) = @{ $data[$i] };
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    my ($x, $y, @got);
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    my $test = qq|\$x = $LIB->_new("$in0"); |
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             . qq|\$y = $LIB->_new("$in1"); |
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             . qq|\@got = $LIB->_rsft(\$x, \$y, $in2);|;
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    diag("\n$test\n\n") if $ENV{AUTHOR_DEBUGGING};
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    eval $test;
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    is($@, "", "'$test' gives emtpy \$\@");
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    subtest "_rsft() in list context: $test", sub {
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        plan tests => $scalar_util_ok ? 8 : 7;
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        cmp_ok(scalar @got, '==', 1,
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               "'$test' gives one output arg");
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        is(ref($got[0]), $REF,
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           "'$test' output arg is a $REF");
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        is($LIB->_check($got[0]), 0,
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           "'$test' output is valid");
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        is($LIB->_str($got[0]), $out0,
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           "'$test' output arg has the right value");
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        isnt(refaddr($got[0]), refaddr($y),
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             "'$test' output arg is not the second input arg")
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          if $scalar_util_ok;
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        is(ref($x), $REF,
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           "'$test' first input arg is still a $REF");
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        is(ref($y), $REF,
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           "'$test' second input arg is still a $REF");
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        is($LIB->_str($y), $in1,
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           "'$test' second input arg is unmodified");
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    };
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}
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# Scalar context.
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for (my $i = 0 ; $i <= $#data ; ++ $i) {
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    my ($in0, $in1, $in2, $out0) = @{ $data[$i] };
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    my ($x, $y, $got);
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    my $test = qq|\$x = $LIB->_new("$in0"); |
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             . qq|\$y = $LIB->_new("$in1"); |
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             . qq|\$got = $LIB->_rsft(\$x, \$y, $in2);|;
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    diag("\n$test\n\n") if $ENV{AUTHOR_DEBUGGING};
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    eval $test;
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    is($@, "", "'$test' gives emtpy \$\@");
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    subtest "_rsft() in scalar context: $test", sub {
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        plan tests => $scalar_util_ok ? 7 : 6;
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        is(ref($got), $REF,
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           "'$test' output arg is a $REF");
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        is($LIB->_check($got), 0,
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           "'$test' output is valid");
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        is($LIB->_str($got), $out0,
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           "'$test' output arg has the right value");
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        isnt(refaddr($got), refaddr($y),
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             "'$test' output arg is not the second input arg")
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          if $scalar_util_ok;
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        is(ref($x), $REF,
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           "'$test' first input arg is still a $REF");
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        is(ref($y), $REF,
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           "'$test' second input arg is still a $REF");
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        is($LIB->_str($y), $in1,
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           "'$test' second input arg is unmodified");
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    };
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}