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// check that we don't crash if an index used by an earlier or clause is dropped
// Dropping an index kills all cursors on the indexed namespace, not just those
// cursors using the dropped index. This test is to serve as a reminder that
// the $or implementation may need minor adjustments (memory ownership) if this
// behavior is changed.
(function() {
"use strict";
load("jstests/libs/fixture_helpers.js"); // For FixtureHelpers.
const t = db.jstests_ord;
t.drop();
t.ensureIndex({a: 1});
t.ensureIndex({b: 1});
for (let i = 0; i < 80; ++i) {
t.save({a: 1});
}
for (let i = 0; i < 100; ++i) {
t.save({b: 1});
}
const c = t.find({$or: [{a: 1}, {b: 1}]}).batchSize(100);
for (let i = 0; i < 100; ++i) {
c.next();
}
// At this point, our initial query has ended and there is a client cursor waiting
// to read additional documents from index {b:1}. Deduping is performed against
// the index key {a:1}.
t.dropIndex({a: 1});
// Dropping an index kills all cursors on the indexed namespace, not just those
// cursors using the dropped index.
if (FixtureHelpers.isMongos(db)) {
// mongos may have some data left from a previous batch stored in memory, so it might not
// return an error immediately, but it should eventually.
assert.soon(function() {
try {
c.next();
return false; // We didn't throw an error yet.
} catch (e) {
return true;
}
});
} else {
assert.throws(() => c.next());
}
})();
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