Utilities - Sinon.JS

Sinon.JS has a few utilities used internally in lib/sinon.js. Unless the method in question is documented here, it should not be considered part of the public API, and thus is subject to change.

Utils API

sinon.createStubInstance(constructor);

Creates a new object with the given function as the protoype and stubs all implemented functions.

class Container {
  contains(item) {
    /* ... */
  }
}

var stubContainer = sinon.createStubInstance(Container);
stubContainer.contains.returns(false);
stubContainer.contains.withArgs("item").returns(true);

The given constructor function is not invoked. See also the stub API.