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author | Ryan Dahl <ry@tinyclouds.org> | 2011-07-08 16:40:11 -0700 |
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committer | Ryan Dahl <ry@tinyclouds.org> | 2011-07-08 16:40:11 -0700 |
commit | e5564a3f29e0a818832a97c7c3b28d7c8b3b0460 (patch) | |
tree | 4b48a6577080d5e44da4d2cbebb7fe7951660de8 /deps/v8/test/mjsunit/unbox-double-arrays.js | |
parent | 0df2f74d364826053641395b01c2fcb1345057a9 (diff) | |
download | node-new-e5564a3f29e0a818832a97c7c3b28d7c8b3b0460.tar.gz |
Upgrade V8 to 3.4.10
Diffstat (limited to 'deps/v8/test/mjsunit/unbox-double-arrays.js')
-rw-r--r-- | deps/v8/test/mjsunit/unbox-double-arrays.js | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/unbox-double-arrays.js b/deps/v8/test/mjsunit/unbox-double-arrays.js new file mode 100644 index 0000000000..31918b3767 --- /dev/null +++ b/deps/v8/test/mjsunit/unbox-double-arrays.js @@ -0,0 +1,78 @@ +// Copyright 2011 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Test dictionary -> double elements -> dictionary elements round trip + +var foo = new Array(500000); + +function func(a) { + for (var i= 0; i < 100000; ++i ) { + a[i] = i+0.5; + } +} + +func(foo); + +for (var i= 0; i < 100000; i += 500 ) { + assertEquals(i+0.5, foo[i]); +} + +delete foo[5]; +// Don't use assertEquals for comparison to undefined due to +assertTrue(undefined === foo[5]); +assertTrue(undefined === foo[500000-1]); +assertTrue(undefined === foo[-1]); +assertEquals(500000, foo.length); + +// Cause the array to grow beyond it's JSArray length. This will double the +// size of the capacity and force the array into "slow" dictionary case. +foo[500001] = 50; +assertEquals(50, foo[500001]); +assertEquals(500002, foo.length); +assertTrue(undefined === foo[5]) +assertTrue(undefined === foo[500000-1]) +assertTrue(undefined === foo[-1]) +assertEquals(500002, foo.length); + +// Test dictionary -> double elements -> fast elements. + +var foo2 = new Array(500000); +func(foo2); +delete foo2[5]; + +// Convert back to fast elements and make sure the contents of the array are +// unchanged. +foo2[25] = new Object(); +for (var i= 0; i < 100000; i += 500 ) { + if (i != 25 && i != 5) { + assertEquals(i+0.5, foo2[i]); + } +} +assertTrue(undefined === foo2[5]) +assertTrue(undefined === foo2[500000-1]) +assertTrue(undefined === foo2[-1]) +assertEquals(500000, foo2.length); |