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// Test that oplog application on the secondary happens correctly when the collection has a default
// collation and operations by _id which must respect the collation are issued.
(function() {
"use strict";
Random.setRandomSeed();
// Return a string whose character at index 'i' in 'str' is replaced by 'character'.
function replaceChar(str, i, character) {
assert.eq(1, character.length);
return str.substr(0, i) + character + str.substr(i + 1);
}
// Return a string whose character at index 'i' has been uppercased.
function uppercaseIth(str, i) {
return replaceChar(str, i, str[i].toUpperCase());
}
const caseInsensitive = {collation: {locale: "en_US", strength: 2}};
var replTest = new ReplSetTest({name: 'testSet', nodes: 2});
var nodes = replTest.startSet();
replTest.initiate();
var primary = replTest.getPrimary();
var primaryDB = primary.getDB("test");
var primaryColl = primaryDB.collate_id;
var secondary = replTest.getSecondary();
var secondaryDB = secondary.getDB("test");
var secondaryColl = secondaryDB.collate_id;
// Stop the secondary from syncing. This will ensure that the writes on the primary get applied
// on the secondary in a large batch.
assert.commandWorked(
secondaryDB.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "alwaysOn"}));
assert.commandWorked(primaryDB.createCollection(primaryColl.getName(), caseInsensitive));
// A string of the character 'b' repeated.
const baseStr = new Array(50).join("b");
for (var i = 0; i < 1000; i++) {
// Make an _id by uppercasing each character in "baseStr" with 0.5 probability.
var strId = baseStr;
for (var charIdx = 0; charIdx < baseStr.length; charIdx++) {
if (Random.rand() < 0.5) {
strId = uppercaseIth(strId, charIdx);
}
}
assert.writeOK(primaryColl.insert({_id: strId}));
assert.writeOK(primaryColl.remove({_id: strId}));
}
// Since the inserts and deletes happen in pairs, we should be left with an empty collection on
// the primary.
assert.eq(0, primaryColl.find().itcount());
// Allow the secondary to sync, and test that it also ends up with an empty collection.
assert.commandWorked(
secondaryDB.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "off"}));
replTest.awaitReplication();
assert.eq(0, secondaryColl.find().itcount());
replTest.stopSet();
})();
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