| 1 | #!./perl -w |
| 2 | |
| 3 | BEGIN { |
| 4 | chdir 't' if -d 't'; |
| 5 | @INC = '../lib'; |
| 6 | } |
| 7 | |
| 8 | use warnings; |
| 9 | use strict; |
| 10 | use vars qw($foo $bar $baz $ballast); |
| 11 | use Test::More tests => 159; |
| 12 | |
| 13 | use Benchmark qw(:all); |
| 14 | |
| 15 | my $delta = 0.4; |
| 16 | |
| 17 | # Some timing ballast |
| 18 | sub fib { |
| 19 | my $n = shift; |
| 20 | return $n if $n < 2; |
| 21 | fib($n-1) + fib($n-2); |
| 22 | } |
| 23 | $ballast = 15; |
| 24 | |
| 25 | my $all_pattern = |
| 26 | qr/(\d+) +wallclock secs? +\( *(-?\d+\.\d\d) +usr +(-?\d+\.\d\d) +sys +\+ +(-?\d+\.\d\d) +cusr +(-?\d+\.\d\d) +csys += +(-?\d+\.\d\d) +CPU\)/; |
| 27 | my $noc_pattern = |
| 28 | qr/(\d+) +wallclock secs? +\( *(-?\d+\.\d\d) +usr +\+ +(-?\d+\.\d\d) +sys += +(-?\d+\.\d\d) +CPU\)/; |
| 29 | my $nop_pattern = |
| 30 | qr/(\d+) +wallclock secs? +\( *(-?\d+\.\d\d) +cusr +\+ +(-?\d+\.\d\d) +csys += +\d+\.\d\d +CPU\)/; |
| 31 | # Please don't trust the matching parenthises to be useful in this :-) |
| 32 | my $default_pattern = qr/$all_pattern|$noc_pattern/; |
| 33 | |
| 34 | my $t0 = new Benchmark; |
| 35 | isa_ok ($t0, 'Benchmark', "Ensure we can create a benchmark object"); |
| 36 | |
| 37 | # We use the benchmark object once we've done some work: |
| 38 | |
| 39 | isa_ok(timeit(5, sub {++$foo}), 'Benchmark', "timeit CODEREF"); |
| 40 | is ($foo, 5, "benchmarked code was run 5 times"); |
| 41 | |
| 42 | isa_ok(timeit(5, '++$bar'), 'Benchmark', "timeit eval"); |
| 43 | is ($bar, 5, "benchmarked code was run 5 times"); |
| 44 | |
| 45 | print "# Burning CPU to benchmark things will take time...\n"; |
| 46 | |
| 47 | |
| 48 | |
| 49 | # We need to do something fairly slow in the coderef. |
| 50 | # Same coderef. Same place in memory. |
| 51 | my $coderef = sub {$baz += fib($ballast)}; |
| 52 | |
| 53 | # The default is three. |
| 54 | $baz = 0; |
| 55 | my $threesecs = countit(0, $coderef); |
| 56 | isa_ok($threesecs, 'Benchmark', "countit 0, CODEREF"); |
| 57 | isnt ($baz, 0, "benchmarked code was run"); |
| 58 | my $in_threesecs = $threesecs->iters; |
| 59 | print "# $in_threesecs iterations\n"; |
| 60 | ok ($in_threesecs > 0, "iters returned positive iterations"); |
| 61 | |
| 62 | my $estimate = int (100 * $in_threesecs / 3) / 100; |
| 63 | print "# from the 3 second run estimate $estimate iterations in 1 second...\n"; |
| 64 | $baz = 0; |
| 65 | my $onesec = countit(1, $coderef); |
| 66 | isa_ok($onesec, 'Benchmark', "countit 1, CODEREF"); |
| 67 | isnt ($baz, 0, "benchmarked code was run"); |
| 68 | my $in_onesec = $onesec->iters; |
| 69 | print "# $in_onesec iterations\n"; |
| 70 | ok ($in_onesec > 0, "iters returned positive iterations"); |
| 71 | |
| 72 | { |
| 73 | my $difference = $in_onesec - $estimate; |
| 74 | my $actual = abs ($difference / $in_onesec); |
| 75 | ok ($actual < $delta, "is $in_onesec within $delta of estimate ($estimate)"); |
| 76 | print "# $in_onesec is between " . ($delta / 2) . |
| 77 | " and $delta of estimate. Not that safe.\n" if $actual > $delta/2; |
| 78 | } |
| 79 | |
| 80 | # I found that the eval'ed version was 3 times faster than the coderef. |
| 81 | # (now it has a different ballast value) |
| 82 | $baz = 0; |
| 83 | my $again = countit(1, '$baz += fib($ballast)'); |
| 84 | isa_ok($onesec, 'Benchmark', "countit 1, eval"); |
| 85 | isnt ($baz, 0, "benchmarked code was run"); |
| 86 | my $in_again = $again->iters; |
| 87 | print "# $in_again iterations\n"; |
| 88 | ok ($in_again > 0, "iters returned positive iterations"); |
| 89 | |
| 90 | |
| 91 | my $t1 = new Benchmark; |
| 92 | isa_ok ($t1, 'Benchmark', "Create another benchmark object now we're finished"); |
| 93 | |
| 94 | my $diff = timediff ($t1, $t0); |
| 95 | isa_ok ($diff, 'Benchmark', "Get the time difference"); |
| 96 | isa_ok (timesum ($t0, $t1), 'Benchmark', "check timesum"); |
| 97 | |
| 98 | my $default = timestr ($diff); |
| 99 | isnt ($default, '', 'timestr ($diff)'); |
| 100 | my $auto = timestr ($diff, 'auto'); |
| 101 | is ($auto, $default, 'timestr ($diff, "auto") matches timestr ($diff)'); |
| 102 | |
| 103 | { |
| 104 | my $all = timestr ($diff, 'all'); |
| 105 | like ($all, $all_pattern, 'timestr ($diff, "all")'); |
| 106 | print "# $all\n"; |
| 107 | |
| 108 | my ($wallclock, $usr, $sys, $cusr, $csys, $cpu) = $all =~ $all_pattern; |
| 109 | |
| 110 | is (timestr ($diff, 'none'), '', "none supresses output"); |
| 111 | |
| 112 | my $noc = timestr ($diff, 'noc'); |
| 113 | like ($noc, qr/$wallclock +wallclock secs? +\( *$usr +usr +\+ +$sys +sys += +$cpu +CPU\)/, 'timestr ($diff, "noc")'); |
| 114 | |
| 115 | my $nop = timestr ($diff, 'nop'); |
| 116 | like ($nop, qr/$wallclock +wallclock secs? +\( *$cusr +cusr +\+ +$csys +csys += +\d+\.\d\d +CPU\)/, 'timestr ($diff, "nop")'); |
| 117 | |
| 118 | if ($auto eq $noc) { |
| 119 | pass ('"auto" is "noc"'); |
| 120 | } else { |
| 121 | is ($auto, $all, '"auto" isn\'t "noc", so should be eq to "all"'); |
| 122 | } |
| 123 | |
| 124 | like (timestr ($diff, 'all', 'E'), |
| 125 | qr/(\d+) +wallclock secs? +\( *\d\.\d+E[-+]?\d\d\d? +usr +\d\.\d+E[-+]?\d\d\d? +sys +\+ +\d\.\d+E[-+]?\d\d\d? +cusr +\d\.\d+E[-+]?\d\d\d? +csys += +\d\.\d+E[-+]?\d\d\d? +CPU\)/, 'timestr ($diff, "all", "E") [sprintf format of "E"]'); |
| 126 | } |
| 127 | |
| 128 | my $out = tie *OUT, 'TieOut'; |
| 129 | |
| 130 | my $iterations = 3; |
| 131 | |
| 132 | $foo = 0; |
| 133 | select(OUT); |
| 134 | my $got = timethis($iterations, sub {++$foo}); |
| 135 | select(STDOUT); |
| 136 | isa_ok($got, 'Benchmark', "timethis CODEREF"); |
| 137 | is ($foo, $iterations, "benchmarked code was run $iterations times"); |
| 138 | |
| 139 | $got = $out->read(); |
| 140 | like ($got, qr/^timethis $iterations/, 'default title'); |
| 141 | like ($got, $default_pattern, 'default format is all or noc'); |
| 142 | |
| 143 | $bar = 0; |
| 144 | select(OUT); |
| 145 | $got = timethis($iterations, '++$bar'); |
| 146 | select(STDOUT); |
| 147 | isa_ok($got, 'Benchmark', "timethis eval"); |
| 148 | is ($bar, $iterations, "benchmarked code was run $iterations times"); |
| 149 | |
| 150 | $got = $out->read(); |
| 151 | like ($got, qr/^timethis $iterations/, 'default title'); |
| 152 | like ($got, $default_pattern, 'default format is all or noc'); |
| 153 | |
| 154 | my $title = 'lies, damn lies and benchmarks'; |
| 155 | $foo = 0; |
| 156 | select(OUT); |
| 157 | $got = timethis($iterations, sub {++$foo}, $title); |
| 158 | select(STDOUT); |
| 159 | isa_ok($got, 'Benchmark', "timethis with title"); |
| 160 | is ($foo, $iterations, "benchmarked code was run $iterations times"); |
| 161 | |
| 162 | $got = $out->read(); |
| 163 | like ($got, qr/^$title:/, 'specify title'); |
| 164 | like ($got, $default_pattern, 'default format is all or noc'); |
| 165 | |
| 166 | # default is auto, which is all or noc. nop can never match the default |
| 167 | $foo = 0; |
| 168 | select(OUT); |
| 169 | $got = timethis($iterations, sub {++$foo}, $title, 'nop'); |
| 170 | select(STDOUT); |
| 171 | isa_ok($got, 'Benchmark', "timethis with format"); |
| 172 | is ($foo, $iterations, "benchmarked code was run $iterations times"); |
| 173 | |
| 174 | $got = $out->read(); |
| 175 | like ($got, qr/^$title:/, 'specify title'); |
| 176 | like ($got, $nop_pattern, 'specify format as nop'); |
| 177 | |
| 178 | { |
| 179 | $foo = 0; |
| 180 | select(OUT); |
| 181 | my $start = time; |
| 182 | $got = timethis(-2, sub {$foo+= fib($ballast)}, $title, 'none'); |
| 183 | my $end = time; |
| 184 | select(STDOUT); |
| 185 | isa_ok($got, 'Benchmark', |
| 186 | "timethis, at least 2 seconds with format 'none'"); |
| 187 | ok ($foo > 0, "benchmarked code was run"); |
| 188 | ok ($end - $start > 1, "benchmarked code ran for over 1 second"); |
| 189 | |
| 190 | $got = $out->read(); |
| 191 | # Remove any warnings about having too few iterations. |
| 192 | $got =~ s/\(warning:[^\)]+\)//gs; |
| 193 | $got =~ s/^[ \t\n]+//s; # Remove all the whitespace from the beginning |
| 194 | |
| 195 | is ($got, '', "format 'none' should suppress output"); |
| 196 | } |
| 197 | |
| 198 | $foo = $bar = $baz = 0; |
| 199 | select(OUT); |
| 200 | $got = timethese($iterations, { Foo => sub {++$foo}, Bar => '++$bar', |
| 201 | Baz => sub {++$baz} }); |
| 202 | select(STDOUT); |
| 203 | is(ref ($got), 'HASH', "timethese should return a hashref"); |
| 204 | isa_ok($got->{Foo}, 'Benchmark', "Foo value"); |
| 205 | isa_ok($got->{Bar}, 'Benchmark', "Bar value"); |
| 206 | isa_ok($got->{Baz}, 'Benchmark', "Baz value"); |
| 207 | eq_set([keys %$got], [qw(Foo Bar Baz)], 'should be exactly three objects'); |
| 208 | is ($foo, $iterations, "Foo code was run $iterations times"); |
| 209 | is ($bar, $iterations, "Bar code was run $iterations times"); |
| 210 | is ($baz, $iterations, "Baz code was run $iterations times"); |
| 211 | |
| 212 | $got = $out->read(); |
| 213 | # Remove any warnings about having too few iterations. |
| 214 | $got =~ s/\(warning:[^\)]+\)//gs; |
| 215 | |
| 216 | like ($got, qr/timing $iterations iterations of\s+Bar\W+Baz\W+Foo\W*?\.\.\./s, |
| 217 | 'check title'); |
| 218 | # Remove the title |
| 219 | $got =~ s/.*\.\.\.//s; |
| 220 | like ($got, qr/\bBar\b.*\bBaz\b.*\bFoo\b/s, 'check output is in sorted order'); |
| 221 | like ($got, $default_pattern, 'should find default format somewhere'); |
| 222 | |
| 223 | my $code_to_test = { Foo => sub {$foo+=fib($ballast-2)}, |
| 224 | Bar => sub {$bar+=fib($ballast)}}; |
| 225 | # Keep these for later. |
| 226 | my $results; |
| 227 | { |
| 228 | $foo = $bar = 0; |
| 229 | select(OUT); |
| 230 | my $start = times; |
| 231 | $results = timethese(-0.1, $code_to_test, 'none'); |
| 232 | my $end = times; |
| 233 | select(STDOUT); |
| 234 | |
| 235 | is(ref ($results), 'HASH', "timethese should return a hashref"); |
| 236 | isa_ok($results->{Foo}, 'Benchmark', "Foo value"); |
| 237 | isa_ok($results->{Bar}, 'Benchmark', "Bar value"); |
| 238 | eq_set([keys %$results], [qw(Foo Bar)], 'should be exactly two objects'); |
| 239 | ok ($foo > 0, "Foo code was run"); |
| 240 | ok ($bar > 0, "Bar code was run"); |
| 241 | |
| 242 | ok (($end - $start) > 0.1, "benchmarked code ran for over 0.1 seconds"); |
| 243 | |
| 244 | $got = $out->read(); |
| 245 | # Remove any warnings about having too few iterations. |
| 246 | $got =~ s/\(warning:[^\)]+\)//gs; |
| 247 | is ($got =~ tr/ \t\n//c, 0, "format 'none' should suppress output"); |
| 248 | } |
| 249 | my $graph_dissassembly = |
| 250 | qr!^[ \t]+(\S+)[ \t]+(\w+)[ \t]+(\w+)[ \t]* # Title line |
| 251 | \n[ \t]*(\w+)[ \t]+([0-9.]+(?:/s)?)[ \t]+(-+)[ \t]+(-?\d+%)[ \t]* |
| 252 | \n[ \t]*(\w+)[ \t]+([0-9.]+(?:/s)?)[ \t]+(-?\d+%)[ \t]+(-+)[ \t]*$!xm; |
| 253 | |
| 254 | sub check_graph_consistency { |
| 255 | my ( $ratetext, $slowc, $fastc, |
| 256 | $slowr, $slowratet, $slowslow, $slowfastt, |
| 257 | $fastr, $fastratet, $fastslowt, $fastfast) |
| 258 | = @_; |
| 259 | my $all_passed = 1; |
| 260 | $all_passed |
| 261 | &= is ($slowc, $slowr, "left col tag should be top row tag"); |
| 262 | $all_passed |
| 263 | &= is ($fastc, $fastr, "right col tag should be bottom row tag"); |
| 264 | $all_passed &= |
| 265 | like ($slowslow, qr/^-+/, "should be dash for comparing slow with slow"); |
| 266 | $all_passed |
| 267 | &= is ($slowslow, $fastfast, "slow v slow should be same as fast v fast"); |
| 268 | my $slowrate = $slowratet; |
| 269 | my $fastrate = $fastratet; |
| 270 | my ($slow_is_rate, $fast_is_rate); |
| 271 | unless ($slow_is_rate = $slowrate =~ s!/s!!) { |
| 272 | # Slow is expressed as iters per second. |
| 273 | $slowrate = 1/$slowrate if $slowrate; |
| 274 | } |
| 275 | unless ($fast_is_rate = $fastrate =~ s!/s!!) { |
| 276 | # Fast is expressed as iters per second. |
| 277 | $fastrate = 1/$fastrate if $fastrate; |
| 278 | } |
| 279 | if ($ratetext =~ /rate/i) { |
| 280 | $all_passed |
| 281 | &= ok ($slow_is_rate, "slow should be expressed as a rate"); |
| 282 | $all_passed |
| 283 | &= ok ($fast_is_rate, "fast should be expressed as a rate"); |
| 284 | } else { |
| 285 | $all_passed &= |
| 286 | ok (!$slow_is_rate, "slow should be expressed as a iters per second"); |
| 287 | $all_passed &= |
| 288 | ok (!$fast_is_rate, "fast should be expressed as a iters per second"); |
| 289 | } |
| 290 | |
| 291 | (my $slowfast = $slowfastt) =~ s!%!!; |
| 292 | (my $fastslow = $fastslowt) =~ s!%!!; |
| 293 | if ($slowrate < $fastrate) { |
| 294 | pass ("slow rate is less than fast rate"); |
| 295 | unless (ok ($slowfast < 0 && $slowfast >= -100, |
| 296 | "slowfast should be less than zero, and >= -100")) { |
| 297 | print STDERR "# slowfast $slowfast\n"; |
| 298 | $all_passed = 0; |
| 299 | } |
| 300 | unless (ok ($fastslow > 0, "fastslow should be > 0")) { |
| 301 | print STDERR "# fastslow $fastslow\n"; |
| 302 | $all_passed = 0; |
| 303 | } |
| 304 | } else { |
| 305 | $all_passed |
| 306 | &= is ($slowrate, $fastrate, |
| 307 | "slow rate isn't less than fast rate, so should be the same"); |
| 308 | $all_passed |
| 309 | &= is ($slowfast, 0, "slowfast should be zero"); |
| 310 | $all_passed |
| 311 | &= is ($fastslow, 0, "fastslow should be zero"); |
| 312 | } |
| 313 | return $all_passed; |
| 314 | } |
| 315 | |
| 316 | sub check_graph_vs_output { |
| 317 | my ($chart, $got) = @_; |
| 318 | my ( $ratetext, $slowc, $fastc, |
| 319 | $slowr, $slowratet, $slowslow, $slowfastt, |
| 320 | $fastr, $fastratet, $fastslowt, $fastfast) |
| 321 | = $got =~ $graph_dissassembly; |
| 322 | my $all_passed |
| 323 | = check_graph_consistency ( $ratetext, $slowc, $fastc, |
| 324 | $slowr, $slowratet, $slowslow, $slowfastt, |
| 325 | $fastr, $fastratet, $fastslowt, $fastfast); |
| 326 | $all_passed |
| 327 | &= is_deeply ($chart, [['', $ratetext, $slowc, $fastc], |
| 328 | [$slowr, $slowratet, $slowslow, $slowfastt], |
| 329 | [$fastr, $fastratet, $fastslowt, $fastfast]], |
| 330 | "check the chart layout matches the formatted output"); |
| 331 | unless ($all_passed) { |
| 332 | print STDERR "# Something went wrong there. I got this chart:\n"; |
| 333 | print STDERR "# $_\n" foreach split /\n/, $got; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | sub check_graph { |
| 338 | my ($title, $row1, $row2) = @_; |
| 339 | is (scalar @$title, 4, "Four entries in title row"); |
| 340 | is (scalar @$row1, 4, "Four entries in first row"); |
| 341 | is (scalar @$row2, 4, "Four entries in second row"); |
| 342 | is (shift @$title, '', "First entry of output graph should be ''"); |
| 343 | check_graph_consistency (@$title, @$row1, @$row2); |
| 344 | } |
| 345 | |
| 346 | { |
| 347 | select(OUT); |
| 348 | my $start = times; |
| 349 | my $chart = cmpthese( -0.1, { a => "++\$i", b => "\$i = sqrt(\$i++)" } ) ; |
| 350 | my $end = times; |
| 351 | select(STDOUT); |
| 352 | ok (($end - $start) > 0.05, "benchmarked code ran for over 0.05 seconds"); |
| 353 | |
| 354 | $got = $out->read(); |
| 355 | # Remove any warnings about having too few iterations. |
| 356 | $got =~ s/\(warning:[^\)]+\)//gs; |
| 357 | |
| 358 | like ($got, qr/running\W+a\W+b.*?for at least 0\.1 CPU second/s, |
| 359 | 'check title'); |
| 360 | # Remove the title |
| 361 | $got =~ s/.*\.\.\.//s; |
| 362 | like ($got, $default_pattern, 'should find default format somewhere'); |
| 363 | like ($got, $graph_dissassembly, "Should find the output graph somewhere"); |
| 364 | check_graph_vs_output ($chart, $got); |
| 365 | } |
| 366 | |
| 367 | { |
| 368 | $foo = $bar = 0; |
| 369 | select(OUT); |
| 370 | my $chart = cmpthese( 10, $code_to_test, 'nop' ) ; |
| 371 | select(STDOUT); |
| 372 | ok ($foo > 0, "Foo code was run"); |
| 373 | ok ($bar > 0, "Bar code was run"); |
| 374 | |
| 375 | $got = $out->read(); |
| 376 | # Remove any warnings about having too few iterations. |
| 377 | $got =~ s/\(warning:[^\)]+\)//gs; |
| 378 | like ($got, qr/timing 10 iterations of\s+Bar\W+Foo\W*?\.\.\./s, |
| 379 | 'check title'); |
| 380 | # Remove the title |
| 381 | $got =~ s/.*\.\.\.//s; |
| 382 | like ($got, $nop_pattern, 'specify format as nop'); |
| 383 | like ($got, $graph_dissassembly, "Should find the output graph somewhere"); |
| 384 | check_graph_vs_output ($chart, $got); |
| 385 | } |
| 386 | |
| 387 | { |
| 388 | $foo = $bar = 0; |
| 389 | select(OUT); |
| 390 | my $chart = cmpthese( 10, $code_to_test, 'none' ) ; |
| 391 | select(STDOUT); |
| 392 | ok ($foo > 0, "Foo code was run"); |
| 393 | ok ($bar > 0, "Bar code was run"); |
| 394 | |
| 395 | $got = $out->read(); |
| 396 | # Remove any warnings about having too few iterations. |
| 397 | $got =~ s/\(warning:[^\)]+\)//gs; |
| 398 | $got =~ s/^[ \t\n]+//s; # Remove all the whitespace from the beginning |
| 399 | is ($got, '', "format 'none' should suppress output"); |
| 400 | is (ref $chart, 'ARRAY', "output should be an array ref"); |
| 401 | # Some of these will go bang if the preceding test fails. There will be |
| 402 | # a big clue as to why, from the previous test's diagnostic |
| 403 | is (ref $chart->[0], 'ARRAY', "output should be an array of arrays"); |
| 404 | check_graph (@$chart); |
| 405 | } |
| 406 | |
| 407 | { |
| 408 | $foo = $bar = 0; |
| 409 | select(OUT); |
| 410 | my $chart = cmpthese( $results ) ; |
| 411 | select(STDOUT); |
| 412 | is ($foo, 0, "Foo code was not run"); |
| 413 | is ($bar, 0, "Bar code was not run"); |
| 414 | |
| 415 | $got = $out->read(); |
| 416 | ok ($got !~ /\.\.\./s, 'check that there is no title'); |
| 417 | like ($got, $graph_dissassembly, "Should find the output graph somewhere"); |
| 418 | check_graph_vs_output ($chart, $got); |
| 419 | } |
| 420 | |
| 421 | { |
| 422 | $foo = $bar = 0; |
| 423 | select(OUT); |
| 424 | my $chart = cmpthese( $results, 'none' ) ; |
| 425 | select(STDOUT); |
| 426 | is ($foo, 0, "Foo code was not run"); |
| 427 | is ($bar, 0, "Bar code was not run"); |
| 428 | |
| 429 | $got = $out->read(); |
| 430 | is ($got, '', "'none' should suppress all output"); |
| 431 | is (ref $chart, 'ARRAY', "output should be an array ref"); |
| 432 | # Some of these will go bang if the preceding test fails. There will be |
| 433 | # a big clue as to why, from the previous test's diagnostic |
| 434 | is (ref $chart->[0], 'ARRAY', "output should be an array of arrays"); |
| 435 | check_graph (@$chart); |
| 436 | } |
| 437 | |
| 438 | ###}my $out = tie *OUT, 'TieOut'; my ($got); ### |
| 439 | |
| 440 | my $debug = tie *STDERR, 'TieOut'; |
| 441 | |
| 442 | $bar = 0; |
| 443 | isa_ok(timeit(5, '++$bar'), 'Benchmark', "timeit eval"); |
| 444 | is ($bar, 5, "benchmarked code was run 5 times"); |
| 445 | is ($debug->read(), '', "There was no debug output"); |
| 446 | |
| 447 | Benchmark->debug(1); |
| 448 | |
| 449 | $bar = 0; |
| 450 | select(OUT); |
| 451 | $got = timeit(5, '++$bar'); |
| 452 | select(STDOUT); |
| 453 | isa_ok($got, 'Benchmark', "timeit eval"); |
| 454 | is ($bar, 5, "benchmarked code was run 5 times"); |
| 455 | is ($out->read(), '', "There was no STDOUT output with debug enabled"); |
| 456 | isnt ($debug->read(), '', "There was STDERR debug output with debug enabled"); |
| 457 | |
| 458 | Benchmark->debug(0); |
| 459 | |
| 460 | $bar = 0; |
| 461 | isa_ok(timeit(5, '++$bar'), 'Benchmark', "timeit eval"); |
| 462 | is ($bar, 5, "benchmarked code was run 5 times"); |
| 463 | is ($debug->read(), '', "There was no debug output debug disabled"); |
| 464 | |
| 465 | undef $debug; |
| 466 | untie *STDERR; |
| 467 | |
| 468 | # To check the cache we are poking where we don't belong, inside the namespace. |
| 469 | # The way benchmark is written We can't actually check whehter the cache is |
| 470 | # being used, merely what's become cached. |
| 471 | |
| 472 | clearallcache(); |
| 473 | my @before_keys = keys %Benchmark::cache; |
| 474 | $bar = 0; |
| 475 | isa_ok(timeit(5, '++$bar'), 'Benchmark', "timeit eval"); |
| 476 | is ($bar, 5, "benchmarked code was run 5 times"); |
| 477 | my @after5_keys = keys %Benchmark::cache; |
| 478 | $bar = 0; |
| 479 | isa_ok(timeit(10, '++$bar'), 'Benchmark', "timeit eval"); |
| 480 | is ($bar, 10, "benchmarked code was run 10 times"); |
| 481 | ok (!eq_array ([keys %Benchmark::cache], \@after5_keys), "10 differs from 5"); |
| 482 | |
| 483 | clearcache(10); |
| 484 | # Hash key order will be the same if there are the same keys. |
| 485 | is_deeply ([keys %Benchmark::cache], \@after5_keys, |
| 486 | "cleared 10, only cached results for 5 should remain"); |
| 487 | |
| 488 | clearallcache(); |
| 489 | is_deeply ([keys %Benchmark::cache], \@before_keys, |
| 490 | "back to square 1 when we clear the cache again?"); |
| 491 | |
| 492 | |
| 493 | package TieOut; |
| 494 | |
| 495 | sub TIEHANDLE { |
| 496 | my $class = shift; |
| 497 | bless(\( my $ref = ''), $class); |
| 498 | } |
| 499 | |
| 500 | sub PRINT { |
| 501 | my $self = shift; |
| 502 | $$self .= join('', @_); |
| 503 | } |
| 504 | |
| 505 | sub PRINTF { |
| 506 | my $self = shift; |
| 507 | $$self .= sprintf shift, @_; |
| 508 | } |
| 509 | |
| 510 | sub read { |
| 511 | my $self = shift; |
| 512 | return substr($$self, 0, length($$self), ''); |
| 513 | } |