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/**
* Tests foreground validation's ability to fix up allowable multikey metadata problems.
*/
(function() {
load("jstests/libs/analyze_plan.js"); // For getWinningPlan to analyze explain() output.
const conn = MongoRunner.runMongod();
const dbName = jsTestName();
const collName = 'test';
const db = conn.getDB(dbName);
const assertValidate = (coll, assertFn) => {
let res = assert.commandWorked(coll.validate());
assertFn(res);
};
const assertIndexMultikey = (coll, hint, expectMultikey) => {
const explain = coll.find().hint(hint).explain();
const plan = getWinningPlan(explain.queryPlanner);
assert.eq("FETCH", plan.stage, explain);
assert.eq("IXSCAN", plan.inputStage.stage, explain);
assert.eq(expectMultikey,
plan.inputStage.isMultiKey,
`Index multikey state "${plan.inputStage.isMultiKey}" was not "${expectMultikey}"`);
};
const runTest = (testCase) => {
db[collName].drop();
db.createCollection(collName);
testCase(db[collName]);
};
// Test that validate will modify an index's multikey paths if they change.
runTest((coll) => {
// Create an index, make the index multikey on 'a', and expect normal validation behavior.
assert.commandWorked(coll.createIndex({a: 1, b: 1}));
assert.commandWorked(coll.insert({_id: 1, a: [0, 1]}));
assertValidate(coll, (res) => {
assert(res.valid);
assert(!res.repaired);
assert.eq(0, res.warnings.length);
assert.eq(0, res.errors.length);
});
assertIndexMultikey(coll, {a: 1, b: 1}, true);
// Insert a document that makes the index multikey on 'b', and remove the document that
// makes the index multikey on 'a'. Expect repair to adjust the paths.
assert.commandWorked(coll.insert({_id: 2, b: [0, 1]}));
assert.commandWorked(coll.remove({_id: 1}));
assertValidate(coll, (res) => {
assert(res.valid);
assert(res.repaired);
assert.eq(1, res.warnings.length);
assert.eq(0, res.errors.length);
});
assertIndexMultikey(coll, {a: 1, b: 1}, true);
});
// Test that validate will unset an index's multikey flag if it no longer has multikey documents.
runTest((coll) => {
// Create an index, make the index multikey on 'a', and expect normal validation behavior.
assert.commandWorked(coll.createIndex({a: 1, b: 1}));
assert.commandWorked(coll.insert({_id: 1, a: [0, 1]}));
assertValidate(coll, (res) => {
assert(res.valid);
assert(!res.repaired);
assert.eq(0, res.warnings.length);
assert.eq(0, res.errors.length);
});
assertIndexMultikey(coll, {a: 1, b: 1}, true);
// Insert a document, remove the document that makes the index multikey. Expect repair to
// unset the multikey flag.
assert.commandWorked(coll.insert({_id: 2, a: 1, b: 1}));
assert.commandWorked(coll.remove({_id: 1}));
assertValidate(coll, (res) => {
assert(res.valid);
assert(res.repaired);
assert.eq(1, res.warnings.length);
assert.eq(0, res.errors.length);
});
assertIndexMultikey(coll, {a: 1, b: 1}, false);
});
// Test that validate will unset the multikey flag for an index that doesn't track path-level
// metadata.
runTest((coll) => {
// Create an index, make the index multikey on 'a', and expect normal validation behavior.
assert.commandWorked(coll.createIndex({a: 'text'}));
assert.commandWorked(coll.insert({_id: 1, a: 'hello world'}));
assertValidate(coll, (res) => {
assert(res.valid);
assert(!res.repaired);
assert.eq(0, res.warnings.length);
assert.eq(0, res.errors.length);
});
assertIndexMultikey(coll, 'a_text', true);
// Insert a document, remove the document that makes the index multikey. Expect repair to
// unset the multikey flag.
assert.commandWorked(coll.insert({_id: 2, a: 'test'}));
assert.commandWorked(coll.remove({_id: 1}));
assertValidate(coll, (res) => {
assert(res.valid);
assert(res.repaired);
assert.eq(1, res.warnings.length);
assert.eq(0, res.errors.length);
});
assertIndexMultikey(coll, 'a_text', false);
});
MongoRunner.stopMongod(conn);
})();
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