ng test error

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WARNING in ./~/@angular/core/src/linker/system_js_ng_module_factory_loader.js
45:15 Critical dependency: the request of a dependency is an expression

WARNING in ./~/@angular/core/src/linker/system_js_ng_module_factory_loader.js
57:15 Critical dependency: the request of a dependency is an expression
01 10 2016 19:08:34.858:INFO [karma]: Karma v1.2.0 server started at http://localhost:9876/
01 10 2016 19:08:34.860:INFO [launcher]: Launching browser Chrome with unlimited concurrency
01 10 2016 19:08:34.865:INFO [launcher]: Starting browser Chrome
01 10 2016 19:08:36.043:INFO [Chrome 53.0.2785 (Linux 0.0.0)]: Connected on socket /#GOitJfECj3bWM11sAAAA with id 48239
Chrome 53.0.2785 (Linux 0.0.0) App: Ejer12 should create the app FAILED
    'app-banner' is not a known element:
    1. If 'app-banner' is an Angular component, then verify that it is part of this module.
    2. If 'app-banner' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schema' of this component to suppress this message. ("[ERROR ->]<app-banner></app-banner>
    "): AppComponent@0:0
    Error: Template parse errors:
        at TemplateParser.parse (http://localhost:9876/_karma_webpack_/0.bundle.js:8665:19)
        at RuntimeCompiler._compileTemplate (http://localhost:9876/_karma_webpack_/0.bundle.js:17850:51)
        at http://localhost:9876/_karma_webpack_/0.bundle.js:17773:83
        at Set.forEach (native)
        at compile (http://localhost:9876/_karma_webpack_/0.bundle.js:17773:47)
        at RuntimeCompiler._compileComponents (http://localhost:9876/_karma_webpack_/0.bundle.js:17775:13)
        at RuntimeCompiler._compileModuleAndAllComponents (http://localhost:9876/_karma_webpack_/0.bundle.js:17692:37)
        at RuntimeCompiler.compileModuleAndAllComponentsSync (http://localhost:9876/_karma_webpack_/0.bundle.js:17680:21)
        at TestingCompilerImpl.compileModuleAndAllComponentsSync (http://localhost:9876/_karma_webpack_/0.bundle.js:24658:35)
        at TestBed._initIfNeeded (webpack:///home/jorge/Dev/github/ng2-examples/ejer12/~/@angular/core/bundles/core-testing.umd.js:1059:0 <- src/test.ts:4416:40)
Chrome 53.0.2785 (Linux 0.0.0): Executed 1 of 1 (1 FAILED) (0 secs / 0.106 secs)
Chrome 53.0.2785 (Linux 0.0.0) App: Ejer12 should create the app FAILED
    'app-banner' is not a known element:
    1. If 'app-banner' is an Angular component, then verify that it is part of this module.
    2. If 'app-banner' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schema' of this component to suppress this message. ("[ERROR ->]<app-banner></app-banner>
    "): AppComponent@0:0
    Error: Template parse errors:
        at TemplateParser.parse (http://localhost:9876/_karma_webpack_/0.bundle.js:8665:19)
        at RuntimeCompiler._compileTemplate (http://localhost:9876/_karma_webpack_/0.bundle.js:17850:51)
        at http://localhost:9876/_karma_webpack_/0.bundle.js:17773:83
        at Set.forEach (native)
        at compile (http://localhost:9876/_karma_webpack_/0.bundle.js:17773:47)
        at RuntimeCompiler._compileComponents (http://localhost:9876/_karma_webpack_/0.bundle.js:17775:13)
        at RuntimeCompiler._compileModuleAndAllComponents (http://localhost:9876/_karma_webpack_/0.bundle.js:17692:37)
        at RuntimeCompiler.compileModuleAndAllComponentsSync (http://localhost:9876/_karma_webpack_/0.bundle.js:17680:21)
        at TestingCompilerImpl.compileModuleAndAllComponentsSync (http://localhost:9876/_karma_webpack_/0.bundle.js:24658:35)
Chrome 53.0.2785 (Linux 0.0.0): Executed 1 of 1 (1 FAILED) ERROR (0.197 secs / 0.106 secs)