v8/test/mjsunit/array-reduce.js
ager@chromium.org a01b45df58 Fix a number of tests that incorrectly used assertUnreachable.
Our testing infrastructure uses exceptions to indicate
errors. assertUnreachable therefore throws an exception to indicate
that it was reached. Therefore, it cannot be used to check that an
exception was thrown using the pattern:

try {
  shouldThrow();
  assertUnreachable();
} catch(e) {
}

Such a test will always pass because assertUnreachable will throw an
exception if shouldThrow does not.

R=ricow@chromium.org

Review URL: http://codereview.chromium.org/7053035

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8117 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-05-31 08:08:42 +00:00

524 lines
18 KiB
JavaScript
Executable File

// Copyright 2009 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.
/**
* @fileoverview Test reduce and reduceRight
*/
function clone(v) {
// Shallow-copies arrays, returns everything else verbatim.
if (v instanceof Array) {
// Shallow-copy an array.
var newArray = new Array(v.length);
for (var i in v) {
newArray[i] = v[i];
}
return newArray;
}
return v;
}
// Creates a callback function for reduce/reduceRight that tests the number
// of arguments and otherwise behaves as "func", but which also
// records all calls in an array on the function (as arrays of arguments
// followed by result).
function makeRecorder(func, testName) {
var record = [];
var f = function recorder(a, b, i, s) {
assertEquals(4, arguments.length,
testName + "(number of arguments: " + arguments.length + ")");
assertEquals("number", typeof(i), testName + "(index must be number)");
assertEquals(s[i], b, testName + "(current argument is at index)");
if (record.length > 0) {
var prevRecord = record[record.length - 1];
var prevResult = prevRecord[prevRecord.length - 1];
assertEquals(prevResult, a,
testName + "(prev result -> current input)");
}
var args = [clone(a), clone(b), i, clone(s)];
var result = func.apply(this, arguments);
args.push(clone(result));
record.push(args);
return result;
};
f.record = record;
return f;
}
function testReduce(type,
testName,
expectedResult,
expectedCalls,
array,
combine,
init) {
var rec = makeRecorder(combine);
var result;
var performsCall;
if (arguments.length > 6) {
result = array[type](rec, init);
} else {
result = array[type](rec);
}
var calls = rec.record;
assertEquals(expectedCalls.length, calls.length,
testName + " (number of calls)");
for (var i = 0; i < expectedCalls.length; i++) {
assertEquals(expectedCalls[i], calls[i],
testName + " (call " + (i + 1) + ")");
}
assertEquals(expectedResult, result, testName + " (result)");
}
function sum(a, b) { return a + b; }
function prod(a, b) { return a * b; }
function dec(a, b, i, arr) { return a + b * Math.pow(10, arr.length - i - 1); }
function accumulate(acc, elem, i) { acc[i] = elem; return acc; }
// ---- Test Reduce[Left]
var simpleArray = [2,4,6]
testReduce("reduce", "SimpleReduceSum", 12,
[[0, 2, 0, simpleArray, 2],
[2, 4, 1, simpleArray, 6],
[6, 6, 2, simpleArray, 12]],
simpleArray, sum, 0);
testReduce("reduce", "SimpleReduceProd", 48,
[[1, 2, 0, simpleArray, 2],
[2, 4, 1, simpleArray, 8],
[8, 6, 2, simpleArray, 48]],
simpleArray, prod, 1);
testReduce("reduce", "SimpleReduceDec", 246,
[[0, 2, 0, simpleArray, 200],
[200, 4, 1, simpleArray, 240],
[240, 6, 2, simpleArray, 246]],
simpleArray, dec, 0);
testReduce("reduce", "SimpleReduceAccumulate", simpleArray,
[[[], 2, 0, simpleArray, [2]],
[[2], 4, 1, simpleArray, [2, 4]],
[[2,4], 6, 2, simpleArray, simpleArray]],
simpleArray, accumulate, []);
testReduce("reduce", "EmptyReduceSum", 0, [], [], sum, 0);
testReduce("reduce", "EmptyReduceProd", 1, [], [], prod, 1);
testReduce("reduce", "EmptyReduceDec", 0, [], [], dec, 0);
testReduce("reduce", "EmptyReduceAccumulate", [], [], [], accumulate, []);
testReduce("reduce", "EmptyReduceSumNoInit", 0, [], [0], sum);
testReduce("reduce", "EmptyReduceProdNoInit", 1, [], [1], prod);
testReduce("reduce", "EmptyReduceDecNoInit", 0, [], [0], dec);
testReduce("reduce", "EmptyReduceAccumulateNoInit", [], [], [[]], accumulate);
var simpleSparseArray = [,,,2,,4,,6,,];
testReduce("reduce", "SimpleSparseReduceSum", 12,
[[0, 2, 3, simpleSparseArray, 2],
[2, 4, 5, simpleSparseArray, 6],
[6, 6, 7, simpleSparseArray, 12]],
simpleSparseArray, sum, 0);
testReduce("reduce", "SimpleSparseReduceProd", 48,
[[1, 2, 3, simpleSparseArray, 2],
[2, 4, 5, simpleSparseArray, 8],
[8, 6, 7, simpleSparseArray, 48]],
simpleSparseArray, prod, 1);
testReduce("reduce", "SimpleSparseReduceDec", 204060,
[[0, 2, 3, simpleSparseArray, 200000],
[200000, 4, 5, simpleSparseArray, 204000],
[204000, 6, 7, simpleSparseArray, 204060]],
simpleSparseArray, dec, 0);
testReduce("reduce", "SimpleSparseReduceAccumulate", [,,,2,,4,,6],
[[[], 2, 3, simpleSparseArray, [,,,2]],
[[,,,2], 4, 5, simpleSparseArray, [,,,2,,4]],
[[,,,2,,4], 6, 7, simpleSparseArray, [,,,2,,4,,6]]],
simpleSparseArray, accumulate, []);
testReduce("reduce", "EmptySparseReduceSumNoInit", 0, [], [,,0,,], sum);
testReduce("reduce", "EmptySparseReduceProdNoInit", 1, [], [,,1,,], prod);
testReduce("reduce", "EmptySparseReduceDecNoInit", 0, [], [,,0,,], dec);
testReduce("reduce", "EmptySparseReduceAccumulateNoInit",
[], [], [,,[],,], accumulate);
var verySparseArray = [];
verySparseArray.length = 10000;
verySparseArray[2000] = 2;
verySparseArray[5000] = 4;
verySparseArray[9000] = 6;
var verySparseSlice2 = verySparseArray.slice(0, 2001);
var verySparseSlice4 = verySparseArray.slice(0, 5001);
var verySparseSlice6 = verySparseArray.slice(0, 9001);
testReduce("reduce", "VerySparseReduceSum", 12,
[[0, 2, 2000, verySparseArray, 2],
[2, 4, 5000, verySparseArray, 6],
[6, 6, 9000, verySparseArray, 12]],
verySparseArray, sum, 0);
testReduce("reduce", "VerySparseReduceProd", 48,
[[1, 2, 2000, verySparseArray, 2],
[2, 4, 5000, verySparseArray, 8],
[8, 6, 9000, verySparseArray, 48]],
verySparseArray, prod, 1);
testReduce("reduce", "VerySparseReduceDec", Infinity,
[[0, 2, 2000, verySparseArray, Infinity],
[Infinity, 4, 5000, verySparseArray, Infinity],
[Infinity, 6, 9000, verySparseArray, Infinity]],
verySparseArray, dec, 0);
testReduce("reduce", "VerySparseReduceAccumulate",
verySparseSlice6,
[[[], 2, 2000, verySparseArray, verySparseSlice2],
[verySparseSlice2, 4, 5000, verySparseArray, verySparseSlice4],
[verySparseSlice4, 6, 9000, verySparseArray, verySparseSlice6]],
verySparseArray, accumulate, []);
testReduce("reduce", "VerySparseReduceSumNoInit", 12,
[[2, 4, 5000, verySparseArray, 6],
[6, 6, 9000, verySparseArray, 12]],
verySparseArray, sum);
testReduce("reduce", "VerySparseReduceProdNoInit", 48,
[[2, 4, 5000, verySparseArray, 8],
[8, 6, 9000, verySparseArray, 48]],
verySparseArray, prod);
testReduce("reduce", "VerySparseReduceDecNoInit", Infinity,
[[2, 4, 5000, verySparseArray, Infinity],
[Infinity, 6, 9000, verySparseArray, Infinity]],
verySparseArray, dec);
testReduce("reduce", "SimpleSparseReduceAccumulateNoInit",
2,
[[2, 4, 5000, verySparseArray, 2],
[2, 6, 9000, verySparseArray, 2]],
verySparseArray, accumulate);
// ---- Test ReduceRight
testReduce("reduceRight", "SimpleReduceRightSum", 12,
[[0, 6, 2, simpleArray, 6],
[6, 4, 1, simpleArray, 10],
[10, 2, 0, simpleArray, 12]],
simpleArray, sum, 0);
testReduce("reduceRight", "SimpleReduceRightProd", 48,
[[1, 6, 2, simpleArray, 6],
[6, 4, 1, simpleArray, 24],
[24, 2, 0, simpleArray, 48]],
simpleArray, prod, 1);
testReduce("reduceRight", "SimpleReduceRightDec", 246,
[[0, 6, 2, simpleArray, 6],
[6, 4, 1, simpleArray, 46],
[46, 2, 0, simpleArray, 246]],
simpleArray, dec, 0);
testReduce("reduceRight", "SimpleReduceRightAccumulate", simpleArray,
[[[], 6, 2, simpleArray, [,,6]],
[[,,6], 4, 1, simpleArray, [,4,6]],
[[,4,6], 2, 0, simpleArray, simpleArray]],
simpleArray, accumulate, []);
testReduce("reduceRight", "EmptyReduceRightSum", 0, [], [], sum, 0);
testReduce("reduceRight", "EmptyReduceRightProd", 1, [], [], prod, 1);
testReduce("reduceRight", "EmptyReduceRightDec", 0, [], [], dec, 0);
testReduce("reduceRight", "EmptyReduceRightAccumulate", [],
[], [], accumulate, []);
testReduce("reduceRight", "EmptyReduceRightSumNoInit", 0, [], [0], sum);
testReduce("reduceRight", "EmptyReduceRightProdNoInit", 1, [], [1], prod);
testReduce("reduceRight", "EmptyReduceRightDecNoInit", 0, [], [0], dec);
testReduce("reduceRight", "EmptyReduceRightAccumulateNoInit",
[], [], [[]], accumulate);
testReduce("reduceRight", "SimpleSparseReduceRightSum", 12,
[[0, 6, 7, simpleSparseArray, 6],
[6, 4, 5, simpleSparseArray, 10],
[10, 2, 3, simpleSparseArray, 12]],
simpleSparseArray, sum, 0);
testReduce("reduceRight", "SimpleSparseReduceRightProd", 48,
[[1, 6, 7, simpleSparseArray, 6],
[6, 4, 5, simpleSparseArray, 24],
[24, 2, 3, simpleSparseArray, 48]],
simpleSparseArray, prod, 1);
testReduce("reduceRight", "SimpleSparseReduceRightDec", 204060,
[[0, 6, 7, simpleSparseArray, 60],
[60, 4, 5, simpleSparseArray, 4060],
[4060, 2, 3, simpleSparseArray, 204060]],
simpleSparseArray, dec, 0);
testReduce("reduceRight", "SimpleSparseReduceRightAccumulate", [,,,2,,4,,6],
[[[], 6, 7, simpleSparseArray, [,,,,,,,6]],
[[,,,,,,,6], 4, 5, simpleSparseArray, [,,,,,4,,6]],
[[,,,,,4,,6], 2, 3, simpleSparseArray, [,,,2,,4,,6]]],
simpleSparseArray, accumulate, []);
testReduce("reduceRight", "EmptySparseReduceRightSumNoInit",
0, [], [,,0,,], sum);
testReduce("reduceRight", "EmptySparseReduceRightProdNoInit",
1, [], [,,1,,], prod);
testReduce("reduceRight", "EmptySparseReduceRightDecNoInit",
0, [], [,,0,,], dec);
testReduce("reduceRight", "EmptySparseReduceRightAccumulateNoInit",
[], [], [,,[],,], accumulate);
var verySparseSuffix6 = [];
verySparseSuffix6[9000] = 6;
var verySparseSuffix4 = [];
verySparseSuffix4[5000] = 4;
verySparseSuffix4[9000] = 6;
var verySparseSuffix2 = verySparseSlice6;
testReduce("reduceRight", "VerySparseReduceRightSum", 12,
[[0, 6, 9000, verySparseArray, 6],
[6, 4, 5000, verySparseArray, 10],
[10, 2, 2000, verySparseArray, 12]],
verySparseArray, sum, 0);
testReduce("reduceRight", "VerySparseReduceRightProd", 48,
[[1, 6, 9000, verySparseArray, 6],
[6, 4, 5000, verySparseArray, 24],
[24, 2, 2000, verySparseArray, 48]],
verySparseArray, prod, 1);
testReduce("reduceRight", "VerySparseReduceRightDec", Infinity,
[[0, 6, 9000, verySparseArray, Infinity],
[Infinity, 4, 5000, verySparseArray, Infinity],
[Infinity, 2, 2000, verySparseArray, Infinity]],
verySparseArray, dec, 0);
testReduce("reduceRight", "VerySparseReduceRightAccumulate",
verySparseSuffix2,
[[[], 6, 9000, verySparseArray, verySparseSuffix6],
[verySparseSuffix6, 4, 5000, verySparseArray, verySparseSuffix4],
[verySparseSuffix4, 2, 2000, verySparseArray, verySparseSuffix2]],
verySparseArray, accumulate, []);
testReduce("reduceRight", "VerySparseReduceRightSumNoInit", 12,
[[6, 4, 5000, verySparseArray, 10],
[10, 2, 2000, verySparseArray, 12]],
verySparseArray, sum);
testReduce("reduceRight", "VerySparseReduceRightProdNoInit", 48,
[[6, 4, 5000, verySparseArray, 24],
[24, 2, 2000, verySparseArray, 48]],
verySparseArray, prod);
testReduce("reduceRight", "VerySparseReduceRightDecNoInit", Infinity,
[[6, 4, 5000, verySparseArray, Infinity],
[Infinity, 2, 2000, verySparseArray, Infinity]],
verySparseArray, dec);
testReduce("reduceRight", "SimpleSparseReduceRightAccumulateNoInit",
6,
[[6, 4, 5000, verySparseArray, 6],
[6, 2, 2000, verySparseArray, 6]],
verySparseArray, accumulate);
// undefined is an element
var undefArray = [,,undefined,,undefined,,];
testReduce("reduce", "SparseUndefinedReduceAdd", NaN,
[[0, undefined, 2, undefArray, NaN],
[NaN, undefined, 4, undefArray, NaN],
],
undefArray, sum, 0);
testReduce("reduceRight", "SparseUndefinedReduceRightAdd", NaN,
[[0, undefined, 4, undefArray, NaN],
[NaN, undefined, 2, undefArray, NaN],
], undefArray, sum, 0);
testReduce("reduce", "SparseUndefinedReduceAddNoInit", NaN,
[[undefined, undefined, 4, undefArray, NaN],
], undefArray, sum);
testReduce("reduceRight", "SparseUndefinedReduceRightAddNoInit", NaN,
[[undefined, undefined, 2, undefArray, NaN],
], undefArray, sum);
// Ignore non-array properties:
var arrayPlus = [1,2,,3];
arrayPlus[-1] = NaN;
arrayPlus[Math.pow(2,32)] = NaN;
arrayPlus[NaN] = NaN;
arrayPlus["00"] = NaN;
arrayPlus["02"] = NaN;
arrayPlus["-0"] = NaN;
testReduce("reduce", "ArrayWithNonElementPropertiesReduce", 6,
[[0, 1, 0, arrayPlus, 1],
[1, 2, 1, arrayPlus, 3],
[3, 3, 3, arrayPlus, 6],
], arrayPlus, sum, 0);
testReduce("reduceRight", "ArrayWithNonElementPropertiesReduceRight", 6,
[[0, 3, 3, arrayPlus, 3],
[3, 2, 1, arrayPlus, 5],
[5, 1, 0, arrayPlus, 6],
], arrayPlus, sum, 0);
// Test error conditions:
var exception = false;
try {
[1].reduce("not a function");
} catch (e) {
exception = true;
assertTrue(e instanceof TypeError,
"reduce callback not a function not throwing TypeError");
assertEquals("called_non_callable", e.type,
"reduce non function TypeError type");
}
assertTrue(exception);
exception = false;
try {
[1].reduceRight("not a function");
} catch (e) {
exception = true;
assertTrue(e instanceof TypeError,
"reduceRight callback not a function not throwing TypeError");
assertEquals("called_non_callable", e.type,
"reduceRight non function TypeError type");
}
assertTrue(exception);
exception = false;
try {
[].reduce(sum);
} catch (e) {
exception = true;
assertTrue(e instanceof TypeError,
"reduce no initial value not throwing TypeError");
assertEquals("reduce_no_initial", e.type,
"reduce no initial TypeError type");
}
assertTrue(exception);
exception = false;
try {
[].reduceRight(sum);
} catch (e) {
exception = true;
assertTrue(e instanceof TypeError,
"reduceRight no initial value not throwing TypeError");
assertEquals("reduce_no_initial", e.type,
"reduceRight no initial TypeError type");
}
assertTrue(exception);
exception = false;
try {
[,,,].reduce(sum);
} catch (e) {
exception = true;
assertTrue(e instanceof TypeError,
"reduce sparse no initial value not throwing TypeError");
assertEquals("reduce_no_initial", e.type,
"reduce no initial TypeError type");
}
assertTrue(exception);
exception = false;
try {
[,,,].reduceRight(sum);
} catch (e) {
exception = true;
assertTrue(e instanceof TypeError,
"reduceRight sparse no initial value not throwing TypeError");
assertEquals("reduce_no_initial", e.type,
"reduceRight no initial TypeError type");
}
assertTrue(exception);
// Array changing length
function manipulator(a, b, i, s) {
if (s.length % 2) {
s[s.length * 3] = i;
} else {
s.length = s.length >> 1;
}
return a + b;
}
var arr = [1, 2, 3, 4];
testReduce("reduce", "ArrayManipulationShort", 3,
[[0, 1, 0, [1, 2, 3, 4], 1],
[1, 2, 1, [1, 2], 3],
], arr, manipulator, 0);
var arr = [1, 2, 3, 4, 5];
testReduce("reduce", "ArrayManipulationLonger", 10,
[[0, 1, 0, [1, 2, 3, 4, 5], 1],
[1, 2, 1, [1, 2, 3, 4, 5,,,,,,,,,,, 0], 3],
[3, 3, 2, [1, 2, 3, 4, 5,,,,], 6],
[6, 4, 3, [1, 2, 3, 4], 10],
], arr, manipulator, 0);
function extender(a, b, i, s) {
s[s.length] = s.length;
return a + b;
}
var arr = [1, 2, 3, 4];
testReduce("reduce", "ArrayManipulationExtender", 10,
[[0, 1, 0, [1, 2, 3, 4], 1],
[1, 2, 1, [1, 2, 3, 4, 4], 3],
[3, 3, 2, [1, 2, 3, 4, 4, 5], 6],
[6, 4, 3, [1, 2, 3, 4, 4, 5, 6], 10],
], arr, extender, 0);