Add test case for profile parsing.

test/data/example.json

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+{"expires_at":"2012-01-25T18:30:08Z","accounts":[{"name":"ACME Corp","href":"https://acmecorp.highrisehq.com","id":333,"product":"highrise"},{"name":"johndoe","href":"https://johndoe.backpackit.com","id":22222,"product":"backpack"},{"name":"ACME Corp","href":"https://acmecorp.basecamphq.com","id":1111111,"product":"basecamp"},{"name":"StealthBus","href":"https://stealthbus.basecamphq.com","id":1221222,"product":"basecamp"}],"identity":{"id":5555,"last_name":"Doe","email_address":"john.doe@example.com","first_name":"John"}}

test/profile.test.js

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+var fs = require('fs')
+  , parse = require('../lib/profile').parse;
+
+
+describe('profile.parse', function() {
+
+  describe('example profile', function() {
+    var profile;
+
+    before(function(done) {
+      fs.readFile('test/data/example.json', 'utf8', function(err, data) {
+        if (err) { return done(err); }
+        profile = parse(data);
+        done();
+      });
+    });
+
+    it('should parse profile', function() {
+      expect(profile.id).to.equal('5555');
+      expect(profile.displayName).to.equal('John Doe');
+      expect(profile.name.familyName).to.equal('Doe');
+      expect(profile.name.givenName).to.equal('John');
+      expect(profile.emails[0].value).to.equal('john.doe@example.com');
+    });
+  });
+
+});