Handle service life

test/test_model.js

 'use strict';
 
 describe('charm normalization', function() {
   var models;
 
   before(function(done) {
     YUI(GlobalConfig).use('juju-models', 'juju-charm-models', function(Y) {
       models = Y.namespace('juju.models');
       done();
     });
@@ skipping 625 matching lines @@
 
     // adjust the dates on there manually because the tests will be run on
     // different days throwing things off.
     Y.each([0, 1, 2], function(index) {
       commits[index].date = new Date();
       commits[index].date.setDate(today.getDate() - (1 + index));
     });
     instance.get('recent_commit_count').should.equal(3);
   });
 });
+
+
+describe('service models', function() {
+  var models, list, django, rails, mysql;
+
+  before(function(done) {
+    YUI(GlobalConfig).use(['juju-models'], function(Y) {
+      models = Y.namespace('juju.models');
+      done();
+    });
+  });
+
+  beforeEach(function() {
+    django = new models.Service({id: 'django'});
+    rails = new models.Service({id: 'rails', life: 'dying'});
+    mysql = new models.Service({id: 'mysql', life: 'dead'});
+    list = new models.ServiceList({items: [rails, django, mysql]});
+  });
+
+  it('instances identify if they are alive', function() {
+    // This test also verifies that the default state is "alive".
+    assert.isTrue(django.isAlive());
+  });
+
+  it('instances identify if they are not alive (dying or dead)', function() {
+    assert.isFalse(rails.isAlive());
+    assert.isFalse(mysql.isAlive());
+  });
+
+  it('can be filtered so that it returns only alive models', function() {
+    var filtered = list.alive();
+    assert.strictEqual(1, filtered.size());
+    assert.deepEqual([django], filtered.toArray());
+  });
+
+});