// Test that an aggregate command where the "pipeline" field has the wrong type fails with a
// TypeMismatch error.
const coll = db[jsTestName()];
coll.drop();

assert.commandWorked(coll.insert({}));

assert.commandFailedWithCode(db.runCommand({aggregate: coll.getName(), pipeline: 1}), ErrorCodes.TypeMismatch);
assert.commandFailedWithCode(db.runCommand({aggregate: coll.getName(), pipeline: {}}), ErrorCodes.TypeMismatch);
assert.commandFailedWithCode(db.runCommand({aggregate: coll.getName(), pipeline: [1, 2]}), ErrorCodes.TypeMismatch);
assert.commandFailedWithCode(db.runCommand({aggregate: coll.getName(), pipeline: [1, null]}), ErrorCodes.TypeMismatch);