So I got round to making an example illustrating my issue. The two set
methods (one commented out) I would expect to behave identically, but using
"copiedCas" fails with [Error: Bad CAS] code: 4098 (or with
keyAlreadyExists if you use the Mock server).
var should = require("should");
var couchbase = require('couchbase');
var connection = new couchbase.Connection({ host: 'localhost:8091', bucket:
'unit_tests' });
//var connection = new couchbase.Mock.Connection();
describe('issue with copying cas', function() {
it('should succeed', function(done){
var testObj = { foo: "bar" };
connection.set('test', testObj, function(err, result) { // Insert with no
cas option i.e. overwrite any existing data
should.not.exist(err);
connection.get('test', function(err, result) { // Retrieve the just added
document
should.not.exist(err);
should.exist(result.cas);
should.exist(result.value);
result.value.foo = "bar2";
var copiedCas = JSON.parse(JSON.stringify(result.cas));
copiedCas.should.be.eql(result.cas); // The two cas values are equal
connection.set('test', result.value, { cas : copiedCas }, function(err,
result) { // Doing it this way fails
// connection.set('test', result.value, { cas : result.cas }, function(err,
result) { // Doing it this way succedes
should.not.exist(err);
should.exist(result);
done();
});
});
});
});
});
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