filer/tests/bugs/issue258.js

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var Filer = require('../../src');
var expect = require('chai').expect;
var setImmediate = require('../../lib/async.js').setImmediate;
describe('Queued operations should error when fs is in error state, issue 258', function() {
var provider;
// Provider that does nothing but fail on open.
function FailingProviderContext(){}
FailingProviderContext.prototype.clear = function(callback) {
this.failCallback(callback);
};
FailingProviderContext.prototype.getObject =
FailingProviderContext.prototype.getBuffer = function(key, callback) {
this.failCallback(callback);
};
FailingProviderContext.prototype.putObject =
FailingProviderContext.prototype.putBuffer = function(key, value, callback) {
this.failCallback(callback);
};
FailingProviderContext.prototype.delete = function(key, callback) {
this.failCallback(callback);
};
function FailingProvider() {
var self = this;
self.name = 'failure';
self.open = function(callback) {
// Wait until caller tells us to fail
self.failNow = function() {
self.failCallback(callback);
};
};
self.failCallback = function(callback) {
setImmediate(function() {
callback(new Error);
});
};
}
FailingProvider.prototype.getReadWriteContext =
FailingProvider.prototype.getReadWriteContext = function() {
return new FailingProviderContext();
};
beforeEach(function() {
provider = new FailingProvider();
});
afterEach(function() {
provider = null;
});
it('should get EFILESYSTEMERROR errors on callbacks to queued operations on provider error', function(done) {
var errCount = 0;
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var fs = new Filer.FileSystem({provider: provider}, function() {
// Do nothing
});
function maybeDone(err) {
expect(err).to.exist;
expect(err.code).to.equal('EFILESYSTEMERROR');
errCount++;
if(errCount === 2) {
done();
}
}
// Queue some fs operations, and expect them to fail
fs.mkdir('/tmp', maybeDone);
fs.writeFile('/file', 'data', maybeDone);
// Operations are queued, tell the provider to fail now.
provider.failNow();
});
it('should get EFILESYSTEMERROR errors on callbacks to queued operations after ready callback', function(done) {
var fs = new Filer.FileSystem({provider: provider}, function(err) {
expect(err).to.exist;
// Queue is drained, but new operations should also fail
fs.mkdir('/tmp', function(err) {
expect(err).to.exist;
expect(err.code).to.equal('EFILESYSTEMERROR');
done();
});
});
provider.failNow();
});
});