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// Tests the behavior of $mod for match expressions.
(function() {
"use strict";
const coll = db.mod;
coll.drop();
function assertDocumentsFromMod(divider, remainder, expectedDocuments) {
const actualDocuments =
coll.find({a: {$mod: [divider, remainder]}}).sort({_id: 1}).toArray();
assert.eq(expectedDocuments, actualDocuments);
}
// Check mod with divisor and remainder which do not fit into int type.
assert.writeOK(coll.insert([
{_id: 1, a: 4000000000},
{_id: 2, a: 15000000000},
{_id: 3, a: -4000000000},
{_id: 4, a: -15000000000},
{_id: 5, a: 4000000000.12345},
{_id: 6, a: 15000000000.12345},
{_id: 7, a: -4000000000.12345},
{_id: 8, a: -15000000000.12345},
{_id: 9, a: NumberDecimal(4000000000.12345)},
{_id: 10, a: NumberDecimal(15000000000.12345)},
{_id: 11, a: NumberDecimal(-4000000000.12345)},
{_id: 12, a: NumberDecimal(-15000000000.12345)},
]));
assertDocumentsFromMod(4000000000, 0, [
{_id: 1, a: 4000000000},
{_id: 3, a: -4000000000},
{_id: 5, a: 4000000000.12345},
{_id: 7, a: -4000000000.12345},
{_id: 9, a: NumberDecimal(4000000000.12345)},
{_id: 11, a: NumberDecimal(-4000000000.12345)},
]);
assertDocumentsFromMod(-4000000000, 0, [
{_id: 1, a: 4000000000},
{_id: 3, a: -4000000000},
{_id: 5, a: 4000000000.12345},
{_id: 7, a: -4000000000.12345},
{_id: 9, a: NumberDecimal(4000000000.12345)},
{_id: 11, a: NumberDecimal(-4000000000.12345)},
]);
assertDocumentsFromMod(10000000000, 5000000000, [
{_id: 2, a: 15000000000},
{_id: 6, a: 15000000000.12345},
{_id: 10, a: NumberDecimal(15000000000.12345)},
]);
assertDocumentsFromMod(10000000000, -5000000000, [
{_id: 4, a: -15000000000},
{_id: 8, a: -15000000000.12345},
{_id: 12, a: NumberDecimal(-15000000000.12345)},
]);
assertDocumentsFromMod(-10000000000, 5000000000, [
{_id: 2, a: 15000000000},
{_id: 6, a: 15000000000.12345},
{_id: 10, a: NumberDecimal(15000000000.12345)},
]);
assertDocumentsFromMod(-10000000000, -5000000000, [
{_id: 4, a: -15000000000},
{_id: 8, a: -15000000000.12345},
{_id: 12, a: NumberDecimal(-15000000000.12345)},
]);
assert(coll.drop());
// Check truncation of input argument for mod operator.
assert.writeOK(coll.insert([
{_id: 1, a: 4.2},
{_id: 2, a: 4.5},
{_id: 3, a: 4.7},
{_id: 4, a: NumberDecimal(4.2)},
{_id: 5, a: NumberDecimal(4.5)},
{_id: 6, a: NumberDecimal(4.7)},
]));
assertDocumentsFromMod(4, 0, [
{_id: 1, a: 4.2},
{_id: 2, a: 4.5},
{_id: 3, a: 4.7},
{_id: 4, a: NumberDecimal(4.2)},
{_id: 5, a: NumberDecimal(4.5)},
{_id: 6, a: NumberDecimal(4.7)},
]);
assert(coll.drop());
// Check more basic mod usage.
assert.writeOK(coll.insert([
{_id: 1, str: "abc123", a: 0},
{_id: 2, str: "xyz123", a: 5},
{_id: 3, str: "ijk123", a: 12},
{_id: 4, s: "array", a: [0, 7]},
{_id: 5, s: "array", a: [1, 7]},
{_id: 6, s: "array", a: [-5]},
]));
assert.eq(1, coll.find({a: {$mod: [-10, -5]}}).itcount());
assert.eq(1, coll.find({a: {$mod: [4, -1]}}).itcount());
assert.eq(4, coll.find({a: {$mod: [5, 0]}}).itcount());
assert.eq(3, coll.find({a: {$mod: [12, 0]}}).itcount());
assert.eq(1, coll.find({a: {$mod: [12, 1]}}).itcount());
assert.writeOK(coll.insert([
{_id: 7, arr: [1, [2, 3], [[4]]]},
{_id: 8, arr: [{b: [1, 2, 3]}, {b: [5]}]},
{_id: 9, arr: [{b: [-1]}, {b: [5]}]},
{_id: 10, arr: "string"},
]));
// Check nested arrays and dotted paths.
assert.eq(1, coll.find({arr: {$mod: [1, 0]}}).itcount());
assert.eq(0, coll.find({arr: {$mod: [4, 0]}}).itcount());
assert.eq(1, coll.find({"arr.b": {$mod: [3, 0]}}).itcount());
assert.eq(2, coll.find({"arr.b": {$mod: [5, 0]}}).itcount());
assert.eq(0, coll.find({"arr.b.c": {$mod: [5, 0]}}).itcount());
// Check with different data types.
assert.eq(6, coll.find({a: {$mod: [1, NumberLong(0)]}}).itcount());
assert.eq(3, coll.find({a: {$mod: [NumberLong(5), NumberDecimal(2.1)]}}).itcount());
assert.eq(3, coll.find({a: {$mod: [NumberDecimal(5.001), NumberDecimal(2.1)]}}).itcount());
assert.eq(1, coll.find({a: {$mod: [NumberInt(7), NumberInt(1)]}}).itcount());
// Check on fields that are not numbers or do not exist.
assert.eq(0, coll.find({str: {$mod: [10, 1]}}).itcount());
assert.eq(0, coll.find({s: {$mod: [10, 1]}}).itcount());
assert.eq(0, coll.find({noField: {$mod: [10, 1]}}).itcount());
// Check divide by zero.
assert.commandFailedWithCode(db.runCommand({find: coll.getName(), filter: {a: {$mod: [0, 1]}}}),
ErrorCodes.BadValue);
assert.commandFailedWithCode(db.runCommand({find: coll.getName(), filter: {a: {$mod: [0, 0]}}}),
ErrorCodes.BadValue);
// Check failures with different data types.
assert.commandFailedWithCode(db.runCommand({
find: coll.getName(),
filter: {a: {$mod: [NumberDecimal(0.001), NumberDecimal(1.001)]}}
}),
ErrorCodes.BadValue);
assert.commandFailedWithCode(db.runCommand({
find: coll.getName(),
filter: {a: {$mod: [NumberInt(1), NumberInt(0), NumberInt(0)]}}
}),
ErrorCodes.BadValue);
assert.commandFailedWithCode(
db.runCommand({find: coll.getName(), filter: {a: {$mod: [NumberDecimal(0.1)]}}}),
ErrorCodes.BadValue);
assert.commandFailedWithCode(
db.runCommand(
{find: coll.getName(), filter: {a: {$mod: [NumberDecimal(0), NumberDecimal(0)]}}}),
ErrorCodes.BadValue);
// Check incorrect arity.
assert.commandFailedWithCode(
db.runCommand({find: coll.getName(), filter: {a: {$mod: [10, 1, 1]}}}),
ErrorCodes.BadValue);
assert.commandFailedWithCode(db.runCommand({find: coll.getName(), filter: {a: {$mod: [10]}}}),
ErrorCodes.BadValue);
// Check remainder, divisor not a number.
assert.commandFailedWithCode(
db.runCommand({find: coll.getName(), filter: {a: {$mod: ["a", 0]}}}), ErrorCodes.BadValue);
assert.commandFailedWithCode(
db.runCommand({find: coll.getName(), filter: {a: {$mod: ["a", "b"]}}}),
ErrorCodes.BadValue);
}());
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