Added instructions and tests

Change-Id: I18e491c4a0c188866dcad1f9db52c4f781054e62
diff --git a/views/ngXosViews/UITutorial/spec/exploreCmd.test.js b/views/ngXosViews/UITutorial/spec/exploreCmd.test.js
new file mode 100644
index 0000000..a5d7cfe
--- /dev/null
+++ b/views/ngXosViews/UITutorial/spec/exploreCmd.test.js
@@ -0,0 +1,197 @@
+'use strict';
+
+describe('The ExploreCmd service', () => {
+  
+  var ExploreCmd, ErrorHandler, ResponseHandler, done, shell, ResourceMock, rootScope;
+
+  beforeEach(module('xos.UITutorial'));
+  beforeEach(module('templates'));
+
+  beforeEach(() => {
+    module(function ($provide) {
+      $provide.value('Resource', ResourceMock);
+    })
+  });
+
+  beforeEach(inject(function (_ExploreCmd_, _ErrorHandler_, _ResponseHandler_, $rootScope) {
+    // The injector unwraps the underscores (_) from around the parameter names when matching
+    ExploreCmd = _ExploreCmd_;
+    ErrorHandler = _ErrorHandler_;
+    ResponseHandler = _ResponseHandler_;
+    rootScope = $rootScope;
+    done = jasmine.createSpy('done');
+    shell = {
+      setCommandHandler: jasmine.createSpy('setCommandHandler'),
+      bestMatch: jasmine.createSpy('bestMatch')
+    };
+    // binding the mock shell to the service (for easy testing)
+    ExploreCmd.shell = shell;
+    spyOn(console, 'error');
+
+    ResourceMock = {
+      query: jasmine.createSpy('query').and.callFake(() => {
+        var deferred = $q.defer();
+        deferred.resolve('Remote call result');
+        return {$promise: deferred.promise};
+      })
+    };
+  }));
+
+  it('should set the resouce command handler', () => {
+    ExploreCmd.setup(shell);
+    expect(shell.setCommandHandler).toHaveBeenCalledWith('resource', { exec: ExploreCmd.resourceExec, completion: ExploreCmd.resourceCompletion })
+  });
+
+  describe('the resourceCompletion function', () => {
+
+    beforeEach(() => {
+      spyOn(ExploreCmd, 'getAvailableResources').and.returnValue(['Sites', 'Slices']);
+    });
+
+    it('should suggest a resource list', () => {
+      ExploreCmd.resourceCompletion('resource', '', {text: 'resource'}, done)
+      expect(shell.bestMatch).toHaveBeenCalledWith('', [ 'list', 'Sites', 'Slices' ]);
+
+      ExploreCmd.resourceCompletion('resource', 'S', {text: 'resource S'}, done)
+      expect(shell.bestMatch).toHaveBeenCalledWith('S', [ 'list', 'Sites', 'Slices' ]);
+    });
+
+    it('should suggest a method list', () => {
+      ExploreCmd.resourceCompletion('resource', '', {text: 'resource Sites '}, done)
+      expect(shell.bestMatch).toHaveBeenCalledWith('', [ 'query', 'get', 'save', '$save', 'delete' ]);
+
+      ExploreCmd.resourceCompletion('resource', 'q', {text: 'resource Sites q'}, done)
+      expect(shell.bestMatch).toHaveBeenCalledWith('q', [ 'query', 'get', 'save', '$save', 'delete' ]);
+    });
+  });
+
+  describe('the resourceExec function', () => {
+
+    beforeEach(() => {
+      spyOn(ExploreCmd, 'listAvailableResources');
+      spyOn(ExploreCmd, 'consumeResource');
+    });
+
+    it('should list available resources', () => {
+      ExploreCmd.resourceExec('explore', ['list'], done);
+      expect(ExploreCmd.listAvailableResources).toHaveBeenCalledWith(done);
+    });
+
+    it('should use a resource', () => {
+      ExploreCmd.resourceExec('explore', ['Resource', 'query'], done);
+      expect(ExploreCmd.consumeResource).toHaveBeenCalledWith('Resource', 'query', [], done);
+    });
+  });
+
+  describe('the getAvailableResources function', () => {
+
+    beforeEach(() => {
+      spyOn(angular, 'module').and.returnValue({
+        _invokeQueue: [
+          ['$provide', 'service', ['Sites', ['$resource']]],
+          ['$provide', 'service', ['Slices', ['$q', '$resource']]],
+          ['$provide', 'factory', ['_', []]],
+          ['$provide', 'service', ['helper', ['Slices']]]
+        ]
+      });
+    });
+
+    it('should return a list of resources in the angular app', () => {
+      const resources = ExploreCmd.getAvailableResources();
+      expect(resources).toEqual(['Sites', 'Slices']);
+    });
+  });
+
+  describe('the listAvailableResources function', () => {
+    beforeEach(() => {
+      spyOn(ExploreCmd, 'getAvailableResources').and.returnValue(['Sites', 'Slices']);
+    });
+
+    it('should format resource in an html template', () => {
+      ExploreCmd.listAvailableResources(done);
+      expect(ExploreCmd.getAvailableResources).toHaveBeenCalled();
+      expect(done).toHaveBeenCalledWith(`Sites<br/>Slices<br/>`);
+    });
+  });
+
+  describe('the consumeResource function', () => {
+    beforeEach(() => {
+      spyOn(ExploreCmd, 'getAvailableResources').and.returnValue(['Resource', 'Fake']);
+      spyOn(ErrorHandler, 'print');
+    });
+
+    it('should notify that a resource does not exists', () => {
+      ExploreCmd.consumeResource('Test', null, null, done);
+      expect(ErrorHandler.print).toHaveBeenCalledWith(`Resource "Test" does not exists`, done)
+    });
+
+    it('should notify that a method does not exists', () => {
+      ExploreCmd.consumeResource('Resource', 'test', null, done);
+      expect(ErrorHandler.print).toHaveBeenCalledWith(`Method "test" not allowed`, done)
+    });
+
+    const methodsWithParams = ['get', '$save', 'delete'];
+    methodsWithParams.forEach(method => {
+      it(`should notify that the ${method} method require parameters`, () => {
+        ExploreCmd.consumeResource('Resource', method, [], done);
+        expect(ErrorHandler.print).toHaveBeenCalledWith(`Method "${method}" require parameters`, done)
+      });
+    });
+
+    it('should not accept id as parameter for the query method', () => {
+      ExploreCmd.consumeResource('Resource', 'query', ['{id:1}'], done);
+      expect(ErrorHandler.print).toHaveBeenCalledWith(`Is not possible to use "id" as filter in method "query", use "get" instead!`, done)
+    });
+
+    it('should notify the user in case of malformed parameters', () => {
+      ExploreCmd.consumeResource('Resource', 'query', ['{child: 3}'], done);
+      expect(ErrorHandler.print).toHaveBeenCalledWith(`Parameter is not valid, it shoudl be in the form of: <code>{id:1}</code>, with no spaces`, done)
+      pending();
+    });
+
+    describe('when called with the correct parameters', () => {
+
+      let deferred;
+      beforeEach(inject(($q) => {
+        spyOn(ResponseHandler, 'parse');
+
+        deferred = $q.defer();
+        ResourceMock = {
+          query: jasmine.createSpy('query').and.callFake(function(){
+            return {$promise: deferred.promise};
+          })
+        };
+      }));
+
+      it('should notify the user if an error occurred while loading the resource', () => {
+        ExploreCmd.consumeResource('Fake', 'query', [], done);
+        expect(console.error).toHaveBeenCalled();
+        expect(ErrorHandler.print).toHaveBeenCalledWith('Failed to inject resource "Fake"', done);
+      });
+
+      it('should call a resource and return the results', () => {
+        ExploreCmd.consumeResource('Resource', 'query', [], done);
+        deferred.resolve([]);
+        rootScope.$apply();
+        expect(ErrorHandler.print).not.toHaveBeenCalled()
+        expect(ResponseHandler.parse).toHaveBeenCalledWith([], 'Resource.query()', done);
+      });
+
+      it('should call a resource with parameters and return the results', () => {
+        ExploreCmd.consumeResource('Resource', 'query', ['{child:3}'], done);
+        deferred.resolve([]);
+        rootScope.$apply();
+        expect(ErrorHandler.print).not.toHaveBeenCalled()
+        expect(ResponseHandler.parse).toHaveBeenCalledWith([], 'Resource.query({"child":3})', done);
+      });
+
+      it('should call a resource and display a not found message', () => {
+        ExploreCmd.consumeResource('Resource', 'query', [], done);
+        deferred.reject({status: 404, data: {detail: 'Not Found.'}});
+        rootScope.$apply();
+        expect(ErrorHandler.print).toHaveBeenCalledWith('Resource with method "query" and parameters {} Not Found.', done)
+        expect(ResponseHandler.parse).not.toHaveBeenCalled();
+      });
+    });
+  });
+});
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