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// Confirm correctness of $mod evaluation in aggregation.
load("jstests/aggregation/extras/utils.js"); // For assertErrorCode and testExpression.
(function() {
"use strict";
var testDB = db.getSiblingDB("expression_mod");
assert.commandWorked(testDB.dropDatabase());
var coll = testDB.getCollection("test");
//
// Confirm different input numeric types are evaluated correctly.
//
// Aggregate checking various combinations of number types.
// The $match portion ensures they are of the correct type as the shell turns the ints back to
// doubles at the end so we can not check types with assert.
coll.save({});
var result =
coll.aggregate(
{
$project: {
_id: 0,
dub_dub: {$mod: [138.5, 3.0]},
dub_int: {$mod: [138.5, NumberLong(3)]},
dub_long: {$mod: [138.5, NumberInt(3)]},
int_dub: {$mod: [NumberInt(8), 3.25]},
int_dubint: {$mod: [NumberInt(8), 3.0]},
int_int: {$mod: [NumberInt(8), NumberInt(3)]},
int_long: {$mod: [NumberInt(8), NumberLong(3)]},
long_dub: {$mod: [NumberLong(8), 3.25]},
long_dubint: {$mod: [NumberLong(8), 3.0]},
long_dublong: {$mod: [NumberLong(500000000000), 450000000000.0]},
long_int: {$mod: [NumberLong(8), NumberInt(3)]},
long_long: {$mod: [NumberLong(8), NumberLong(3)]},
verylong_verylong:
{$mod: [NumberLong(800000000000), NumberLong(300000000000)]}
}
},
{
$match: {
// 1 is NumberDouble
dub_dub: {$type: 1},
dub_int: {$type: 1},
dub_long: {$type: 1},
int_dub: {$type: 1},
// 16 is NumberInt
int_dubint: {$type: 16},
int_int: {$type: 16},
// 18 is NumberLong
int_long: {$type: 18},
long_dub: {$type: 1},
long_dubint: {$type: 18},
long_dublong: {$type: 1},
long_int: {$type: 18},
long_long: {$type: 18},
verylong_verylong: {$type: 18}
}
});
// Correct answers (it is mainly the types that are important here).
var expectedResult = [{
dub_dub: 0.5,
dub_int: 0.5,
dub_long: 0.5,
int_dub: 1.5,
int_dubint: 2,
int_int: 2,
int_long: NumberLong(2),
long_dub: 1.5,
long_dubint: NumberLong(2),
long_dublong: 50000000000,
long_int: NumberLong(2),
long_long: NumberLong(2),
verylong_verylong: NumberLong(200000000000)
}];
assert.eq(result.toArray(), expectedResult, tojson(result));
//
// Confirm error cases.
//
// Confirm mod by 0 fails in an expected manner.
assertErrorCode(coll, {$project: {a: {$mod: [10, 0 /*double*/]}}}, 16610);
assertErrorCode(coll, {$project: {a: {$mod: [NumberInt(10), NumberInt(0)]}}}, 16610);
assertErrorCode(coll, {$project: {a: {$mod: [NumberLong(10), NumberLong(0)]}}}, 16610);
// Confirm expected behavior for NaN and Infinity values.
testExpression(coll, {$mod: [10, NaN]}, NaN);
testExpression(coll, {$mod: [10, Infinity]}, 10);
testExpression(coll, {$mod: [10, -Infinity]}, 10);
testExpression(coll, {$mod: [Infinity, 10]}, NaN);
testExpression(coll, {$mod: [-Infinity, 10]}, NaN);
testExpression(coll, {$mod: [NaN, 10]}, NaN);
})();
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