Mongoose and unique indexes

When testing a model’s unique index, you may find that your specs do not fail as you would expect.  You may find that the unique index appears to not be taking effect.

If that is the case, you can:

describe(“something unique”, function(){

  beforeEach(function(done){

    model_under_test.ensureIndexes(done);

  });

  it(“fails with an error..”);

});

Another (possibly better) alternative is to make assertions on the model schema.

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