ambari/ambari-web/test/controllers/wizard/step5_test.js

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var Ember = require('ember');
var App = require('app');
require('controllers/wizard/step5_controller');
var modelSetup = require('test/init_model_test');
require('utils/ajax/ajax');
var c;
describe('App.WizardStep5Controller', function () {
  beforeEach(function () {
    c = App.WizardStep5Controller.create();
  });
  var controller = App.WizardStep5Controller.create();
  controller.set('content', {});
  var cpu = 2, memory = 4;

  controller.set('content', {});

  describe('#isReassignWizard', function () {
    it('true if content.controllerName is reassignMasterController', function () {
      controller.set('content.controllerName', 'reassignMasterController');
      expect(controller.get('isReassignWizard')).to.equal(true);
    });
    it('false if content.controllerName is not reassignMasterController', function () {
      controller.set('content.controllerName', 'mainController');
      expect(controller.get('isReassignWizard')).to.equal(false);
    });
  });

  describe('#isAddServiceWizard', function () {
    it('true if content.controllerName is addServiceController', function () {
      controller.set('content.controllerName', 'addServiceController');
      expect(controller.get('isAddServiceWizard')).to.equal(true);
    });
    it('false if content.controllerName is not addServiceController', function () {
      controller.set('content.controllerName', 'mainController');
      expect(controller.get('isAddServiceWizard')).to.equal(false);
    });
  });

  describe('#sortHosts', function () {

    var tests = Em.A([
      {
        hosts: [
          Em.Object.create({memory: 4, cpu: 1, host_name: 'host1', id: 1}),
          Em.Object.create({memory: 3, cpu: 1, host_name: 'host2', id: 2}),
          Em.Object.create({memory: 2, cpu: 1, host_name: 'host3', id: 3}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host4', id: 4})
        ],
        m: 'memory',
        e: [1, 2, 3, 4]
      },
      {
        hosts: [
          Em.Object.create({memory: 1, cpu: 4, host_name: 'host1', id: 1}),
          Em.Object.create({memory: 1, cpu: 3, host_name: 'host2', id: 2}),
          Em.Object.create({memory: 1, cpu: 2, host_name: 'host3', id: 3}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host4', id: 4})
        ],
        m: 'cpu',
        e: [1, 2, 3, 4]
      },
      {
        hosts: [
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host4', id: 1}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host2', id: 2}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host3', id: 3}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host1', id: 4})
        ],
        m: 'host_name',
        e: [4, 2, 3, 1]
      },
      {
        hosts: [
          Em.Object.create({memory: 2, cpu: 1, host_name: 'host1', id: 1}),
          Em.Object.create({memory: 1, cpu: 2, host_name: 'host3', id: 2}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host4', id: 3}),
          Em.Object.create({memory: 1, cpu: 1, host_name: 'host2', id: 4})
        ],
        m: 'mix',
        e: [1, 2, 4, 3]
      }
    ]);

    tests.forEach(function (test) {
      it(test.m, function () {
        var hosts = Em.copy(test.hosts);
        controller.sortHosts(hosts);
        expect(Em.A(hosts).mapProperty('id')).to.eql(test.e);
      });
    });

  });

  describe('#renderHostInfo', function () {

    var tests = Em.A([
      {
        hosts: {
          h1: {memory: 4, cpu: 1, name: 'host1', bootStatus: 'INIT'},
          h2: {memory: 3, cpu: 1, name: 'host2', bootStatus: 'INIT'},
          h3: {memory: 2, cpu: 1, name: 'host3', bootStatus: 'INIT'},
          h4: {memory: 1, cpu: 1, name: 'host4', bootStatus: 'INIT'}
        },
        m: 'no one host is REGISTERED',
        e: []
      },
      {
        hosts: {
          h1: {memory: 4, cpu: 1, name: 'host1', bootStatus: 'REGISTERED'},
          h2: {memory: 3, cpu: 1, name: 'host2', bootStatus: 'REGISTERED'},
          h3: {memory: 2, cpu: 1, name: 'host3', bootStatus: 'REGISTERED'},
          h4: {memory: 1, cpu: 1, name: 'host4', bootStatus: 'REGISTERED'}
        },
        m: 'all hosts are REGISTERED, memory',
        e: ['host1', 'host2', 'host3', 'host4']
      },
      {
        hosts: {
          h1: {memory: 1, cpu: 4, name: 'host1', bootStatus: 'REGISTERED'},
          h2: {memory: 1, cpu: 3, name: 'host2', bootStatus: 'REGISTERED'},
          h3: {memory: 1, cpu: 2, name: 'host3', bootStatus: 'REGISTERED'},
          h4: {memory: 1, cpu: 1, name: 'host4', bootStatus: 'REGISTERED'}
        },
        m: 'all hosts are REGISTERED, cpu',
        e: ['host1', 'host2', 'host3', 'host4']
      },
      {
        hosts: {
          h1: {memory: 1, cpu: 1, name: 'host4', bootStatus: 'REGISTERED'},
          h2: {memory: 1, cpu: 1, name: 'host2', bootStatus: 'REGISTERED'},
          h3: {memory: 1, cpu: 1, name: 'host3', bootStatus: 'REGISTERED'},
          h4: {memory: 1, cpu: 1, name: 'host1', bootStatus: 'REGISTERED'}
        },
        m: 'all hosts are REGISTERED, host_name',
        e: ['host1', 'host2', 'host3', 'host4']
      },
      {
        hosts: {
          h1: {memory: 2, cpu: 1, name: 'host1', bootStatus: 'REGISTERED'},
          h2: {memory: 1, cpu: 2, name: 'host3', bootStatus: 'INIT'},
          h3: {memory: 1, cpu: 1, name: 'host4', bootStatus: 'REGISTERED'},
          h4: {memory: 1, cpu: 1, name: 'host2', bootStatus: 'INIT'}
        },
        m: 'mix',
        e: ['host1', 'host4']
      }
    ]);

    tests.forEach(function (test) {
      it(test.m, function () {
        controller.set('content', {hosts: test.hosts});
        controller.renderHostInfo();
        var r = controller.get('hosts');
        expect(Em.A(r).mapProperty('host_name')).to.eql(test.e);
      });
    });

  });

  describe('#last', function () {

    var tests = Em.A([
      {
        selectedServicesMasters: Em.A([
          {component_name: 'c1', indx: 1},
          {component_name: 'c2', indx: 2},
          {component_name: 'c1', indx: 2}
        ]),
        m: 'Components exists',
        c: 'c1',
        e: 2
      },
      {
        selectedServicesMasters: Em.A([
          {component_name: 'c1', indx: 1},
          {component_name: 'c2', indx: 2},
          {component_name: 'c1', indx: 2}
        ]),
        m: 'Components don\'t exists',
        c: 'c3',
        e: null
      }
    ]);

    tests.forEach(function (test) {
      it(test.m, function () {
        controller.set('selectedServicesMasters', test.selectedServicesMasters);
        if (!Em.isNone(test.e)) {
          expect(controller.last(test.c).indx).to.equal(test.e);
        }
        else {
          expect(Em.isNone(controller.last(test.c))).to.equal(true);
        }
      })
    });

  });

  describe('#remainingHosts', function () {
    it('should show count of hosts without masters', function () {
      c.reopen({masterHostMapping: [
        {}
      ]});
      c.set('hosts', [
        {},
        {},
        {}
      ]);
      expect(c.get('remainingHosts')).to.equal(2);
    });
  });

  describe('#clearStep', function () {
    var tests = Em.A([
      {p: 'hosts'},
      {p: 'selectedServicesMasters'},
      {p: 'servicesMasters'}
    ]);
    tests.forEach(function (test) {
      it('should cleanup ' + test.p, function () {
        c.set(test.p, [Em.Object.create({}), Em.Object.create({})]);
        c.clearStep();
        expect(c.get(test.p).length).to.equal(0);
      });
    });
  });

  describe('#updateComponent', function () {
    var tests = Em.A([
      {
        componentName: 'HBASE_SERVER',
        services: Em.A([
          Em.Object.create({isInstalled: true, serviceName: 'HBASE'})
        ]),
        selectedServicesMasters: Em.A([
          Em.Object.create({showAddControl: false, showRemoveControl: true, component_name: 'HBASE_SERVER'}),
          Em.Object.create({showAddControl: true, showRemoveControl: false, component_name: 'HBASE_SERVER'})
        ]),
        hosts: Em.A([
          Em.Object.create({})
        ]),
        controllerName: 'addServiceController',
        m: 'service is installed',
        e: {
          showAddControl: true,
          showRemoveControl: false
        }
      },
      {
        componentName: 'HBASE_SERVER',
        services: Em.A([
          Em.Object.create({isInstalled: false, serviceName: 'HBASE'})
        ]),
        selectedServicesMasters: Em.A([
          Em.Object.create({showAddControl: true, showRemoveControl: false, component_name: 'HBASE_SERVER'})
        ]),
        hosts: Em.A([
          Em.Object.create({})
        ]),
        controllerName: 'addServiceController',
        m: 'service not installed, but all host already have provided component',
        e: {
          showAddControl: true,
          showRemoveControl: false
        }
      },
      {
        componentName: 'HBASE_SERVER',
        services: Em.A([
          Em.Object.create({isInstalled: false, serviceName: 'HBASE'})
        ]),
        selectedServicesMasters: Em.A([
          Em.Object.create({showAddControl: false, showRemoveControl: true, component_name: 'HBASE_SERVER'})
        ]),
        hosts: Em.A([
          Em.Object.create({}),
          Em.Object.create({})
        ]),
        controllerName: 'addServiceController',
        m: 'service not installed, not all host already have provided component',
        e: {
          showAddControl: true,
          showRemoveControl: true
        }
      },
      {
        componentName: 'HBASE_SERVER',
        services: Em.A([
          Em.Object.create({isInstalled: false, serviceName: 'HBASE'})
        ]),
        selectedServicesMasters: Em.A([
          Em.Object.create({showAddControl: false, showRemoveControl: true, component_name: 'HBASE_SERVER'})
        ]),
        hosts: Em.A([
          Em.Object.create({}),
          Em.Object.create({})
        ]),
        controllerName: 'reassignMasterController',
        m: 'service not installed, not all host already have provided component, but is reassignMasterController',
        e: {
          showAddControl: false,
          showRemoveControl: false
        }
      }
    ]);

    tests.forEach(function (test) {
      it(test.m, function () {
        sinon.stub(App.StackService, 'find', function () {
          return test.services;
        });
        c.reopen({
          content: Em.Object.create({
            controllerName: test.controllerName
          }),
          selectedServicesMasters: test.selectedServicesMasters,
          hosts: test.hosts
        });
        c.updateComponent(test.componentName);
        App.StackService.find.restore();
        Em.keys(test.e).forEach(function (k) {
          expect(c.last(test.componentName).get(k)).to.equal(test.e[k]);
        });

      });
    });
  });

  describe('#renderComponents', function () {
    var tests = Em.A([
      {
        masterComponents: Em.A([
          {component_name: 'ZOOKEEPER_SERVER'}
        ]),
        services: Em.A([
          Em.Object.create({serviceName: 'ZOOKEEPER', isInstalled: false, isSelected: true})
        ]),
        controllerName: 'reassignMasterController',
        m: 'One component',
        isHaEnabled: false,
        component_name: 'ZOOKEEPER_SERVER',
        e: {
          selectedServicesMasters: ['ZOOKEEPER_SERVER'],
          servicesMasters: ['ZOOKEEPER_SERVER'],
          showRemoveControl: [false],
          isInstalled: [false],
          serviceComponentId: [1]
        }
      },
      {
        masterComponents: Em.A([
          {component_name: 'ZOOKEEPER_SERVER'}
        ]),
        services: Em.A([
          Em.Object.create({serviceName: 'ZOOKEEPER', isInstalled: false, isSelected: true})
        ]),
        controllerName: 'addServiceController',
        m: 'One component, service is not installed',
        component_name: 'ZOOKEEPER_SERVER',
        e: {
          selectedServicesMasters: ['ZOOKEEPER_SERVER'],
          servicesMasters: ['ZOOKEEPER_SERVER'],
          showRemoveControl: [false],
          serviceComponentId: [1]
        }
      },
      {
        masterComponents: Em.A([
          {component_name: 'ZOOKEEPER_SERVER'},
          {component_name: 'ZOOKEEPER_SERVER'}
        ]),
        services: Em.A([
          Em.Object.create({serviceName: 'ZOOKEEPER', isInstalled: true})
        ]),
        controllerName: 'addServiceController',
        m: 'Two components, but service is installed',
        component_name: 'ZOOKEEPER_SERVER',
        e: {
          selectedServicesMasters: ['ZOOKEEPER_SERVER', 'ZOOKEEPER_SERVER'],
          servicesMasters: ['ZOOKEEPER_SERVER', 'ZOOKEEPER_SERVER'],
          showRemoveControl: [false, false],
          serviceComponentId: [1, 2]
        }
      }
    ]);
    tests.forEach(function (test) {
      beforeEach(function () {
        App.reopen({isHaEnabled: test.isHaEnabled});
      });
      it(test.m, function () {
        modelSetup.setupStackServiceComponent();
        sinon.stub(App.StackService, 'find', function () {
          return test.services;
        });
        App.set('isHaEnabled', test.isHaEnabled);
        c.reopen({
          content: Em.Object.create({
            services: test.services,
            controllerName: test.controllerName,
            reassign: {component_name: test.component_name}
          })
        });
        c.renderComponents(test.masterComponents);
        App.StackService.find.restore();
        modelSetup.cleanStackServiceComponent();
        expect(c.get('selectedServicesMasters').mapProperty('component_name')).to.eql(test.e.selectedServicesMasters);
        expect(c.get('servicesMasters').mapProperty('component_name')).to.eql(test.e.servicesMasters);
        expect(c.get('selectedServicesMasters').mapProperty('showRemoveControl')).to.eql(test.e.showRemoveControl);
        expect(c.get('selectedServicesMasters').mapProperty('serviceComponentId')).to.eql(test.e.serviceComponentId);
        if (c.get('isReasignController')) {
          expect(c.get('servicesMasters').mapProperty('isInstalled')).to.eql(test.e.isInstalled);
        }
      });
    });
  });

  describe('#assignHostToMaster', function () {
    var tests = Em.A([
        {
          componentName: 'c1',
          selectedHost: 'h2',
          serviceComponentId: '1',
          e: {
            indx: 0
          }
        },
        {
          componentName: 'c2',
          selectedHost: 'h3',
          serviceComponentId: '2',
          e: {
            indx: 3
          }
        },
        {
          componentName: 'c3',
          selectedHost: 'h1',
          e: {
            indx: 2
          }
        },
        {
          componentName: 'c2',
          selectedHost: 'h4',
          e: {
            indx: 1
          }
        }
      ]),
      selectedServicesMasters = Em.A([
        Em.Object.create({component_name: 'c1', serviceComponentId: '1', selectedHost: 'h1'}),
        Em.Object.create({component_name: 'c2', serviceComponentId: '1', selectedHost: 'h1'}),
        Em.Object.create({component_name: 'c3', serviceComponentId: '1', selectedHost: 'h3'}),
        Em.Object.create({component_name: 'c2', serviceComponentId: '2', selectedHost: 'h2'})
      ]);

    tests.forEach(function (test) {
      it(test.componentName + ' ' + test.selectedHost + ' ' + test.serviceComponentId, function () {
        c.set('selectedServicesMasters', selectedServicesMasters);
        c.assignHostToMaster(test.componentName, test.selectedHost, test.serviceComponentId);
        expect(c.get('selectedServicesMasters').objectAt(test.e.indx).get('selectedHost')).to.equal(test.selectedHost);
      })
    });
  });

  describe('#submit', function () {
    beforeEach(function () {
      sinon.stub(App.router, 'send', Em.K);
    });
    afterEach(function () {
      App.router.send.restore();
    });
    it('should go next if not isSubmitDisabled', function () {
      c.reopen({isSubmitDisabled: false});
      c.submit();
      expect(App.router.send.calledWith('next')).to.equal(true);
    });
    it('shouldn\'t go next if submitDisabled true', function () {
      sinon.stub(c, 'getIsSubmitDisabled', Em.K);
      c.reopen({submitDisabled: true});
      c.submit();
      c.getIsSubmitDisabled.restore();
      expect(App.router.send.called).to.equal(false);
    });
  });

  describe('#removeComponent', function () {
    var tests = Em.A([
      {
        componentName: 'c1',
        serviceComponentId: 1,
        selectedServicesMasters: Em.A([]),
        hosts: [],
        m: 'empty selectedServicesMasters',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        serviceComponentId: 1,
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'HBASE_SERVER'})
        ]),
        hosts: [],
        m: 'no such components',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        serviceComponentId: 1,
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER'})
        ]),
        hosts: [],
        m: 'component is only 1',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        serviceComponentId: 2,
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 2, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false})
        ]),
        hosts: [
          {},
          {}
        ],
        m: 'two components, add allowed, remove not allowed',
        e: true,
        showAddControl: true,
        showRemoveControl: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        serviceComponentId: 2,
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 2, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false})
        ]),
        hosts: [
          {}
        ],
        m: 'two components, add not allowed, remove not allowed',
        e: true,
        showAddControl: false,
        showRemoveControl: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        serviceComponentId: 2,
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 2, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 3, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: true})
        ]),
        hosts: [
          {},
          {}
        ],
        m: 'three components, add not allowed, remove allowed',
        e: true,
        showAddControl: false,
        showRemoveControl: true
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        serviceComponentId: 2,
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 2, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 3, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: true})
        ]),
        hosts: [
          {},
          {},
          {}
        ],
        m: 'three components, add allowed, remove allowed',
        e: true,
        showAddControl: true,
        showRemoveControl: true
      }
    ]);
    tests.forEach(function (test) {
      it(test.m, function () {
        c.set('selectedServicesMasters', test.selectedServicesMasters);
        c.set('hosts', test.hosts);
        expect(c.removeComponent(test.componentName, test.serviceComponentId)).to.equal(test.e);
        if (test.e) {
          expect(c.get('selectedServicesMasters.lastObject.showRemoveControl')).to.equal(test.showRemoveControl);
          expect(c.get('selectedServicesMasters.lastObject.showAddControl')).to.equal(test.showAddControl);
        }
      })
    });
  });

  describe('#addComponent', function () {
    var tests = Em.A([
      {
        componentName: 'c1',
        selectedServicesMasters: Em.A([]),
        hosts: [],
        m: 'empty selectedServicesMasters',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'HBASE_SERVER'})
        ]),
        hosts: [],
        m: 'no such components',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER'})
        ]),
        hosts: [],
        m: 'one component, 0 hosts',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 2, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false})
        ]),
        hosts: [Em.Object.create({}), Em.Object.create({})],
        m: 'two components, two hosts',
        e: false
      },
      {
        componentName: 'ZOOKEPEER_SERVER',
        selectedServicesMasters: Em.A([
          Em.Object.create({serviceComponentId: 1, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false}),
          Em.Object.create({serviceComponentId: 2, component_name: 'ZOOKEPEER_SERVER', showAddControl: false, showRemoveControl: false})
        ]),
        hosts: [Em.Object.create({}), Em.Object.create({}), Em.Object.create({})],
        m: 'two components, 3 hosts',
        e: true
      }
    ]);
    tests.forEach(function (test) {
      it(test.m, function () {
        c.set('selectedServicesMasters', test.selectedServicesMasters);
        c.set('hosts', test.hosts);
        expect(c.addComponent(test.componentName)).to.equal(test.e);
      });
    });
  });

  describe('#title', function () {
    it('should be custom title for reassignMasterController', function () {
      c.set('content', {controllerName: 'reassignMasterController'});
      expect(c.get('title')).to.equal(Em.I18n.t('installer.step5.reassign.header'));
    });
    it('should be default for other', function () {
      c.set('content', {controllerName: 'notReassignMasterController'});
      expect(c.get('title')).to.equal(Em.I18n.t('installer.step5.header'));
    });
  });

  describe('#masterHostMapping', function () {
    Em.A([
        {
          selectedServicesMasters: [
            Em.Object.create({selectedHost: 'h1'}),
            Em.Object.create({selectedHost: 'h2'}),
            Em.Object.create({selectedHost: 'h1'})
          ],
          hosts: [
            Em.Object.create({host_name: 'h1', host_info: {}}),
            Em.Object.create({host_name: 'h2', host_info: {}})
          ],
          m: 'Two hosts',
          e: [
            {host_name: 'h1', hostInfo: {}, masterServices: [
              {},
              {}
            ]},
            {host_name: 'h2', hostInfo: {}, masterServices: [
              {}
            ]}
          ]
        },
        {
          selectedServicesMasters: [],
          hosts: [],
          m: 'No hosts',
          e: []
        },
        {
          selectedServicesMasters: [
            Em.Object.create({selectedHost: 'h1'}),
            Em.Object.create({selectedHost: 'h1'})
          ],
          hosts: [
            Em.Object.create({host_name: 'h1', host_info: {}})
          ],
          m: 'One host',
          e: [
            {host_name: 'h1', hostInfo: {}, masterServices: [
              {},
              {}
            ]}
          ]
        }
      ]).forEach(function (test) {
        it(test.m, function () {
          c.reopen({
            selectedServicesMasters: test.selectedServicesMasters,
            hosts: test.hosts
          });
          var result = c.get('masterHostMapping');
          expect(result.length).to.equal(test.e.length);
          result.forEach(function (r, i) {
            expect(r.get('host_name')).to.equal(test.e[i].host_name);
            expect(r.get('masterServices.length')).to.equal(test.e[i].masterServices.length);
            expect(r.get('hostInfo')).to.be.an.object;
          });
        });
      });
  });

});