testing broken?

[janearc]

I feel like I am missing something here when I try to run tests:

haram:node-mug jane$ node test/nonExpressoTest.js 
%MUGT-I-START; Starting UUID Generator Test.
%MUGT-I-REQUIRE; Calling require("node-mug").

module.js:340
    throw err;
          ^
Error: Cannot find module './build/Release/mug.node'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at /Users/jane/build/jane/node-mug/node-mug.js:10:22
    at Object.<anonymous> (/Users/jane/build/jane/node-mug/node-mug.js:330:2)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
haram:node-mug jane$ 

I am not sure what is asking for mug.node or where this mysterious ./build directory comes from?