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// Tests that SERVER-11374 is fixed: specifically, that indexes cannot
// be created on fields that begin with '$' but are not part of DBRefs
// and that indexes cannot be created on field paths that contain empty
// fields.
var coll = db.jstests_indexp;
// Empty field checks.
assert.commandFailed(coll.ensureIndex({ 'a..b': 1 }));
assert.commandFailed(coll.ensureIndex({ '.a': 1 }));
assert.commandFailed(coll.ensureIndex({ 'a.': 1 }));
assert.commandFailed(coll.ensureIndex({ '.': 1 }));
assert.commandFailed(coll.ensureIndex({ '': 1 }));
assert.commandWorked(coll.ensureIndex({ 'a.b': 1 }));
// '$'-prefixed field checks.
assert.commandFailed(coll.ensureIndex({ '$a': 1 }));
assert.commandFailed(coll.ensureIndex({ 'a.$b': 1 }));
assert.commandFailed(coll.ensureIndex({ '$db': 1 }));
assert.commandWorked(coll.ensureIndex({ 'a$ap': 1 })); // $ in middle is ok
assert.commandWorked(coll.ensureIndex({ 'a.$id': 1 })); // $id/$db/$ref are execptions
coll.dropIndexes();
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