/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {validateConfig} from '../src/config';
import {PRIMARY_OUTLET} from '../src/shared';

describe('config', () => {
  describe('validateConfig', () => {
    it('should not throw when no errors', () => {
      validateConfig([{path: 'a', redirectTo: 'b'}, {path: 'b', component: ComponentA}]);
    });

    it('should throw when Array is passed', () => {
      expect(() => {
        validateConfig([
          {path: 'a', component: ComponentA},
          [{path: 'b', component: ComponentB}, {path: 'c', component: ComponentC}]
        ]);
      }).toThrowError(`Invalid route configuration: Array cannot be specified`);
    });

    it('should throw when redirectTo and children are used together', () => {
      expect(() => {
        validateConfig(
            [{path: 'a', redirectTo: 'b', children: [{path: 'b', component: ComponentA}]}]);
      })
          .toThrowError(
              `Invalid configuration of route 'a': redirectTo and children cannot be used together`);
    });

    it('should throw when redirectTo and loadChildren are used together', () => {
      expect(() => { validateConfig([{path: 'a', redirectTo: 'b', loadChildren: 'value'}]); })
          .toThrowError(
              `Invalid configuration of route 'a': redirectTo and loadChildren cannot be used together`);
    });

    it('should throw when children and loadChildren are used together', () => {
      expect(() => { validateConfig([{path: 'a', children: [], loadChildren: 'value'}]); })
          .toThrowError(
              `Invalid configuration of route 'a': children and loadChildren cannot be used together`);
    });

    it('should throw when component and redirectTo are used together', () => {
      expect(() => { validateConfig([{path: 'a', component: ComponentA, redirectTo: 'b'}]); })
          .toThrowError(
              `Invalid configuration of route 'a': redirectTo and component cannot be used together`);
    });

    it('should throw when path is missing', () => {
      expect(() => {
        validateConfig([{component: null, redirectTo: 'b'}]);
      }).toThrowError(`Invalid route configuration: routes must have path specified`);
    });

    it('should throw when none of component and children or direct are missing', () => {
      expect(() => { validateConfig([{path: 'a'}]); })
          .toThrowError(
              `Invalid configuration of route 'a': one of the following must be provided (component or redirectTo or children or loadChildren)`);
    });

    it('should throw when path starts with a slash', () => {
      expect(() => {
        validateConfig([<any>{path: '/a', redirectTo: 'b'}]);
      }).toThrowError(`Invalid route configuration of route '/a': path cannot start with a slash`);
    });

    it('should throw when emptyPath is used with redirectTo without explicitly providing matching',
       () => {
         expect(() => {
           validateConfig([<any>{path: '', redirectTo: 'b'}]);
         }).toThrowError(/Invalid route configuration of route '{path: "", redirectTo: "b"}'/);
       });

    it('should throw when pathPatch is invalid', () => {
      expect(() => { validateConfig([{path: 'a', pathMatch: 'invalid', component: ComponentB}]); })
          .toThrowError(
              /Invalid configuration of route 'a': pathMatch can only be set to 'prefix' or 'full'/);
    });

    it('should throw when pathPatch is invalid', () => {
      expect(() => { validateConfig([{path: 'a', outlet: 'aux', children: []}]); })
          .toThrowError(
              /Invalid route configuration of route 'a': a componentless route cannot have a named outlet set/);

      expect(() => validateConfig([{path: 'a', outlet: '', children: []}])).not.toThrow();
      expect(() => validateConfig([{path: 'a', outlet: PRIMARY_OUTLET, children: []}]))
          .not.toThrow();
    });
  });
});

class ComponentA {}
class ComponentB {}
class ComponentC {}