ruby-changes:12614
From: mame <ko1@a...>
Date: Thu, 30 Jul 2009 21:57:20 +0900 (JST)
Subject: [ruby-changes:12614] Ruby:r24326 (trunk): * test/ruby/test_rand.rb: add tests for Random class.
mame 2009-07-30 21:57:02 +0900 (Thu, 30 Jul 2009) New Revision: 24326 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=24326 Log: * test/ruby/test_rand.rb: add tests for Random class. Modified files: trunk/ChangeLog trunk/test/ruby/test_rand.rb Index: ChangeLog =================================================================== --- ChangeLog (revision 24325) +++ ChangeLog (revision 24326) @@ -1,3 +1,7 @@ +Thu Jul 30 21:56:18 2009 Yusuke Endoh <mame@t...> + + * test/ruby/test_rand.rb: add tests for Random class. + Thu Jul 30 21:48:56 2009 Yusuke Endoh <mame@t...> * random.c (init_genrand): ensure invariant of mt->next and mt->left. Index: test/ruby/test_rand.rb =================================================================== --- test/ruby/test_rand.rb (revision 24325) +++ test/ruby/test_rand.rb (revision 24326) @@ -168,4 +168,194 @@ def test_big_seed assert_random_int(%w(1143843490), 0x100000000, 2**1000000-1) end + + def test_random_gc + r = Random.new(0) + %w(2357136044 2546248239 3071714933).each do |w| + assert_equal(w.to_i, r.int(0x100000000)) + end + GC.start + %w(3626093760 2588848963 3684848379).each do |w| + assert_equal(w.to_i, r.int(0x100000000)) + end + end + + def test_random_type_error + assert_raise(TypeError) { Random.new(Object.new) } + assert_raise(TypeError) { Random.new(0).int(Object.new) } + end + + def test_random_argument_error + assert_raise(ArgumentError) { Random.new(0).float(0, 0) } + end + + def test_random_seed + assert_equal(0, Random.new(0).seed) + assert_equal(0x100000000, Random.new(0x100000000).seed) + assert_equal(2**100, Random.new(2**100).seed) + end + + def test_random_dup + r1 = Random.new(0) + r2 = r1.dup + %w(2357136044 2546248239 3071714933).each do |w| + assert_equal(w.to_i, r1.int(0x100000000)) + end + %w(2357136044 2546248239 3071714933).each do |w| + assert_equal(w.to_i, r2.int(0x100000000)) + end + r2 = r1.dup + %w(3626093760 2588848963 3684848379).each do |w| + assert_equal(w.to_i, r1.int(0x100000000)) + end + %w(3626093760 2588848963 3684848379).each do |w| + assert_equal(w.to_i, r2.int(0x100000000)) + end + end + + def test_random_state + state = <<END +3877134065023083674777481835852171977222677629000095857864323111193832400974413 +4782302161934463784850675209112299537259006497924090422596764895633625964527441 +6943943249411681406395713106007661119327771293929504639878577616749110507385924 +0173026285378896836022134086386136835407107422834685854738117043791709411958489 +3504364936306163473541948635570644161010981140452515307286926529085424765299100 +1255453260115310687580777474046203049197643434654645011966794531914127596390825 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+6997324121866564283654784470215100159122764509197570402997911258816526554863326 +9877535269005418736225944874608987238997316999444215865249840762640949599725696 +0773083894168959823152054508672272612355108904098579447774398451678239199426513 +3439507737424049578587487505080347686371029156845461151278198605267053408259090 +3158676794894709281917034995611352710898103415304769654883981727681820369090169 +9295163908214854813365413456264812190842699054830709079275249714169405719140093 +1347572458245530016346604698682269779841803667099480215265926316505737171177810 +9969036572310084022695109125200937135540995157279354438704321290061646592229860 +0156566013602344870223183295508278359111174872740360473845615437106413256386849 +2286259982118315248148847764929974917157683083659364623458927512616369119194574 +2254080 +END + state = state.split.join.to_i + r = Random.new(0) + srand(0) + assert_equal(state, r.instance_eval { state }) + assert_equal(state, Random.instance_eval { state }) + r.int(0x100) + assert_equal(state, r.instance_eval { state }) + end + + def test_random_left + r = Random.new(0) + assert_equal(1, r.instance_eval { left }) + r.int(0x100) + assert_equal(624, r.instance_eval { left }) + r.int(0x100) + assert_equal(623, r.instance_eval { left }) + srand(0) + assert_equal(1, Random.instance_eval { left }) + rand(0x100) + assert_equal(624, Random.instance_eval { left }) + rand(0x100) + assert_equal(623, Random.instance_eval { left }) + end + + def test_random_bytes + r = Random.new(0) + assert_equal("", r.bytes(0)) + assert_equal("\xAC".force_encoding("ASCII-8BIT"), r.bytes(1)) + assert_equal("/\xAA\xC4\x97u\xA6\x16\xB7\xC0\xCC".force_encoding("ASCII-8BIT"), r.bytes(10)) + end + + def test_random_range + r = Random.new(0) + %w(9 5 8).each {|w| assert_equal(w.to_i, r.int(5..9)) } + %w(-237 731 383).each {|w| assert_equal(w.to_i, r.int(-1000..1000)) } + %w(1267650600228229401496703205382 + 1267650600228229401496703205384 + 1267650600228229401496703205383).each do |w| + assert_equal(w.to_i, r.int(2**100+5..2**100+9)) + end + end + + def test_random_float + r = Random.new(0) + assert_in_delta(0.5488135039273248, r.float, 0.0001) + assert_in_delta(0.7151893663724195, r.float, 0.0001) + assert_in_delta(0.6027633760716439, r.float, 0.0001) + assert_in_delta(1.0897663659937937, r.float(2), 0.0001) + assert_in_delta(5.3704626067153264e+29, r.float(2**100), 10**25) + + # is this intentional? + assert_raise(TypeError) { r.float(1..2) } + end + + def test_random_equal + r = Random.new(0) + assert(r == r) + assert(r == r.dup) + r1 = r.dup + r2 = r.dup + r1.int(0x100) + assert(r1 != r2) + r2.int(0x100) + assert(r1 == r2) + end end -- ML: ruby-changes@q... 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