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More thorough tests of sorting integers in lexicographic order.

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Review URL: http://codereview.chromium.org/2923

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@324 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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erik.corry@gmail.com 2008-09-17 10:25:05 +00:00
parent abeb614287
commit 05597193ce
1 changed files with 38 additions and 0 deletions
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38
test/mjsunit/array-sort.js
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@ -25,6 +25,8 @@
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --allow-natives-syntax
// Test array sort.
// Test counter-intuitive default number sorting.
@ -49,10 +51,46 @@ function TestNumberSort() {
a.sort();
assertArrayEquals([-123,-1234,-12345,-123456,0,0,123,1234,12345,123456], a);
// Tricky case avoiding integer overflow in Runtime_SmiLexicographicCompare.
a = [9, 1000000000].sort();
assertArrayEquals([1000000000, 9], a);
a = [1000000000, 1].sort();
assertArrayEquals([1, 1000000000], a);
a = [1000000000, 0].sort();
assertArrayEquals([0, 1000000000], a);
// One string is a prefix of the other.
a = [1230, 123].sort();
assertArrayEquals([123, 1230], a);
a = [1231, 123].sort();
assertArrayEquals([123, 1231], a);
// Default sort on Smis and non-Smis.
a = [1000000000, 10000000000, 1000000001, -1000000000, -10000000000, -1000000001];
a.sort();
assertArrayEquals([-1000000000, -10000000000, -1000000001, 1000000000, 10000000000, 1000000001], a);
for (var xb = 1; xb <= 1000 * 1000 * 1000; xb *= 10) {
for (var xf = 0; xf <= 9; xf++) {
for (var xo = -1; xo <= 1; xo++) {
for (var yb = 1; yb <= 1000 * 1000 * 1000; yb *= 10) {
for (var yf = 0; yf <= 9; yf++) {
for (var yo = -1; yo <= 1; yo++) {
var x = xb * xf + xo;
var y = yb * yf + yo;
if (!%_IsSmi(x)) continue;
if (!%_IsSmi(y)) continue;
var lex = %SmiLexicographicCompare(x, y);
if (lex < 0) lex = -1;
if (lex > 0) lex = 1;
assertEquals(lex, (x == y) ? 0 : ((x + "") < (y + "") ? -1 : 1), x + " < " + y);
}
}
}
}
}
}
}
TestNumberSort();