jstests/core/count11.js


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// SERVER-8514: Test the count command returns an error to the user when given an invalid query
// predicate, even when the collection doesn't exist.

var t = db.count11;

t.drop();

var validQuery = {
    a: 1
};
var invalidQuery = {
    a: {$invalid: 1}
};

// Query non-existing collection with empty query.
assert.eq(0, t.find().count());
assert.eq(0, t.find().itcount());

// Query non-existing collection.
// Returns 0 on valid syntax query.
// Fails on invalid syntax query.
assert.eq(0, t.find(validQuery).count());
assert.throws(function() {
    t.find(invalidQuery).count();
});

// Query existing collection.
// Returns 0 on valid syntax query.
// Fails on invalid syntax query.
assert.commandWorked(db.createCollection(t.getName()));
assert.eq(0, t.find(validQuery).count());
assert.throws(function() {
    t.find(invalidQuery).count();
});