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/**
* Attempts to drop the given collection and asserts either that the drop succeeded or the
* collection did not exist. Avoids automatically recreating the collection in the case of test
* suites where accessing or dropping the collection implicitly recreates it.
*/
function assertDropCollection(db, collName) {
var cmdRes = db.runCommand({drop: collName, writeConcern: {w: "majority"}});
assert(cmdRes.ok === 1 || cmdRes.code === ErrorCodes.NamespaceNotFound, tojson(cmdRes));
}
/**
* Attempts to create a collection with the given name and options, if any, and asserts on failure.
* Returns the newly-created collection on success. When running under a sharded collections
* passthrough, the new collection will be implicitly sharded.
*/
function assertCreateCollection(db, collName, collOpts) {
assert.commandWorked(db.createCollection(collName, collOpts));
return db.getCollection(collName);
}
/**
* Attempts to drop a collection with the given name and recreate it with the specified options, if
* any. Asserts if either step fails. Returns the newly-created collection on success. When running
* under a sharded collections passthrough, the new collection will be implicitly sharded.
*/
function assertDropAndRecreateCollection(db, collName, collOpts) {
assertDropCollection(db, collName);
return assertCreateCollection(db, collName, collOpts);
}
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