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# Copyright (C) 2010, Parrot Foundation.

=head1 NAME

Prove

=head1 DESCRIPTION

Prove is a PIR-based TAP (Test Anything Protocol) Harness

It eats test output (i.e. is a TAP consumer) and tells humans if the
test suite passed, and if not, which kind of pretty colors of smoke
came out. It is mostly equivalent to 'prove' from Perl 5.

=head1 SYNOPSIS

  parrot-prove t/*.t

=head2 OPTIONS

Usage:

  parrot-prove [OPTIONS] <files>

=head3 Boolean options

 -v, --verbose Print all test lines.
 -s, --shuffle Run the tests in random order.
 -f, --failures Show failed tests.
 -o, --comments Show comments.
      --ignore-exit Ignore exit status from test scripts.
 -m, --merge Merge test scripts' STDERR with their STDOUT.
      --reverse Run the tests in reverse order.
 -q, --quiet Suppress some test output while running tests.
 -Q, --QUIET Only print summary results.
      --directives Only show results with TODO or SKIP directives.
      --normalize Normalize TAP output in verbose output
 -h, --help Display this help
 -V, --version Display the version

=head3 Options that take arguments

 -e, --exec Interpreter to run the tests ('' for compiled
                        tests.)
 -a, --archive Store the resulting TAP in an archive file.

=cut


.sub 'main' :main
    .param pmc argv
    $S0 = shift argv
    .local int argc
    argc = elements argv
    if argc > 0 goto L1
    help()
    end
  L1:
    .local pmc opts
    opts = _parse_opts(argv)
    $S0 = opts['help']
    unless $S0 goto L2
    help()
    end
  L2:
    $S0 = opts['version']
    unless $S0 goto L3
    version()
    end
  L3:
    .tailcall do(opts, argv)
.end

.sub 'version' :anon
    say "Prove 0.1.0"
.end

.sub 'help' :anon
    say <<"HELP"

 parrot-prove [options] [files]

Boolean options:

 -v, --verbose Print all test lines.
 -s, --shuffle Run the tests in random order.
 -f, --failures Show failed tests.
 -o, --comments Show comments.
      --ignore-exit Ignore exit status from test scripts.
 -m, --merge Merge test scripts' STDERR with their STDOUT.
      --reverse Run the tests in reverse order.
 -q, --quiet Suppress some test output while running tests.
 -Q, --QUIET Only print summary results.
      --directives Only show results with TODO or SKIP directives.
      --normalize Normalize TAP output in verbose output
 -h, --help Display this help
 -V, --version Display the version

Options that take arguments:

 -e, --exec Interpreter to run the tests ('' for compiled
                        tests.)
 -a, --archive Store the resulting TAP in an archive file.
HELP
.end

.sub '_parse_opts' :anon
    .param pmc argv
    load_bytecode 'Getopt/Obj.pbc'
    $P0 = new ['Getopt';'Obj']
    $P0.'notOptStop'(1)
    push $P0, 'exec|e:s'
    push $P0, 'archive|a:s'
    push $P0, 'verbose|v'
    push $P0, 'quiet|q'
    push $P0, 'QUIET|Q'
    push $P0, 'normalize'
    push $P0, 'failures|f'
    push $P0, 'comments|o'
    push $P0, 'directives'
    push $P0, 'ignore-exit'
    push $P0, 'reverse'
    push $P0, 'merge|m'
    push $P0, 'shuffle|s'
    push $P0, 'version|V'
    push $P0, 'help|h'
    $P1 = $P0.'get_options'(argv)
    .return ($P1)
.end

.sub 'do' :anon
    .param pmc opts
    .param pmc files
    load_bytecode 'TAP/Harness.pbc'
    .local pmc harness, aggregate
    $I0 = exists opts['archive']
    if $I0 goto L1
    harness = new ['TAP';'Harness']
    goto L2
  L1:
    harness = new ['TAP';'Harness';'Archive']
    $S0 = opts['archive']
    harness.'archive'($S0)
  L2:
    harness.'process_args'(opts)
    $P0 = _get_tests(opts, files)
    aggregate = harness.'runtests'($P0)
    $I0 = aggregate.'has_errors'()
    exit $I0
.end

.sub '_get_tests' :anon
    .param pmc opts
    .param pmc files
    .local int nb
    nb = elements files
    # currently, FixedStringArray hasn't the method sort.
    # see GH #384
    $P0 = new 'FixedPMCArray'
    set $P0, nb
    $I0 = 0
    $P1 = iter files
  L1:
    unless $P1 goto L2
    $S0 = shift $P1
    $P2 = split "\\", $S0
    $S0 = join "/", $P2
    $P2 = box $S0
    $P0[$I0] = $P2
    inc $I0
    goto L1
  L2:
    $I0 = exists opts['shuffle']
    unless $I0 goto L3
    $P0 = _shuffle($P0)
    goto L4
  L3:
    $P0.'sort'()
    $I0 = exists opts['reverse']
    unless $I0 goto L4
    $P0 = _reverse($P0)
  L4:
    .return ($P0)
.end

.sub '_reverse' :anon
    .param pmc array
    .local int nb
    nb = elements array
    $P0 = new 'FixedPMCArray'
    set $P0, nb
    $I0 = 0
    $I1 = nb - 1
  L1:
    unless $I0 < nb goto L2
    $P1 = array[$I0]
    $P0[$I1] = $P1
    inc $I0
    dec $I1
    goto L1
  L2:
    .return ($P0)
.end

.sub '_shuffle' :anon
    .param pmc array
    load_bytecode 'Math/Rand.pbc'
    .local pmc rand
    rand = get_global [ 'Math'; 'Rand' ], 'rand'
    .local pmc srand
    srand = get_global [ 'Math'; 'Rand' ], 'srand'
    $I0 = time
    srand($I0)
    .local int i, j
    i = elements array
  L1:
    unless i > 0 goto L2
    $I0 = rand()
    j = $I0 % i
    dec i
    $P1 = array[i]
    $P2 = array[j]
    array[i] = $P2
    array[j] = $P1
    goto L1
  L2:
    .return (array)
.end


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