Separated the construction of factories & repositories from the models for simplicity

tests/e2e/api/src/factories/__tests__/simple-product.spec.ts

@@ -0,0 +1,21 @@
+import { AsyncFactory } from '../../framework/async-factory';
+import { SimpleProduct } from '../../models';
+import Mock = jest.Mock;
+import { simpleProductFactory } from '../simple-product';
+
+describe( 'simpleProductFactory', () => {
+	let mockCreator: Mock;
+	let factory: AsyncFactory< SimpleProduct >;
+
+	beforeEach( () => {
+		mockCreator = jest.fn();
+		factory = simpleProductFactory( mockCreator );
+	} );
+
+	it( 'should build', () => {
+		const model = factory.build( { name: 'Test Product' } );
+
+		expect( model ).toMatchObject( { name: 'Test Product' } );
+		expect( parseFloat( model.regularPrice ) ).toBeGreaterThan( 0.0 );
+	} );
+} );

tests/e2e/api/src/factories/simple-product.ts

@@ -0,0 +1,22 @@
+import { AsyncFactory } from '../framework/async-factory';
+import { commerce } from 'faker/locale/en';
+import { SimpleProduct } from '../models';
+import { CreateFn } from '../framework/model-repository';
+
+/**
+ * Creates a new factory for creating models.
+ *
+ * @param {Function} creator The function we will use for creating models.
+ * @return {AsyncFactory} The factory for creating models.
+ */
+export function simpleProductFactory( creator: CreateFn< SimpleProduct > ): AsyncFactory< SimpleProduct > {
+	return new AsyncFactory< SimpleProduct >(
+		( { params } ) => {
+			return new SimpleProduct( {
+				name: params.name ?? commerce.productName(),
+				regularPrice: params.regularPrice ?? commerce.price(),
+			} );
+		},
+		creator,
+	);
+}

tests/e2e/api/src/framework/__tests__/model-repository.spec.ts

@@ -1,48 +1,76 @@
 import { Model } from '../../models/model';
 import { ModelRepository } from '../model-repository';
-import Mock = jest.Mock;
 
 class DummyModel extends Model {
 	public name: string = '';
+
+	public constructor( partial?: Partial< DummyModel > ) {
+		super();
+		Object.assign( this, partial );
+	}
 }
 
 describe( 'ModelRepository', () => {
-	let dummyModel: DummyModel;
-	let mockCallback: Mock;
-	let repository: ModelRepository< DummyModel >;
+	it( 'should create', async () => {
+		const model = new DummyModel();
+		const callback = jest.fn().mockResolvedValue( model );
+		const repository = new ModelRepository< DummyModel >( callback, null, null, null );
 
-	beforeEach( () => {
-		dummyModel = new DummyModel();
-		dummyModel.name = 'test';
-		mockCallback = jest.fn();
-		repository = new ModelRepository< DummyModel >( mockCallback, mockCallback, mockCallback, mockCallback );
+		const created = await repository.create( { name: 'test' } );
+		expect( created ).toBe( model );
+		expect( callback ).toHaveBeenCalledWith( { name: 'test' } );
 	} );
 
-	it( 'should create', async () => {
-		mockCallback.mockResolvedValue( dummyModel );
+	it( 'should throw error on create without callback', () => {
+		const repository = new ModelRepository< DummyModel >( null, null, null, null );
 
-		await repository.create( dummyModel );
-		expect( mockCallback ).toHaveBeenCalledWith( dummyModel );
+		expect( () => repository.create( { name: 'test' } ) ).toThrowError( /not defined/i );
 	} );
 
 	it( 'should read', async () => {
-		mockCallback.mockResolvedValue( dummyModel );
+		const model = new DummyModel();
+		const callback = jest.fn().mockResolvedValue( model );
+		const repository = new ModelRepository< DummyModel >( null, callback, null, null );
 
-		await repository.read( { id: 1 } );
-		expect( mockCallback ).toHaveBeenCalledWith( { id: 1 } );
+		const created = await repository.read( 1 );
+		expect( created ).toBe( model );
+		expect( callback ).toHaveBeenCalledWith( 1 );
+	} );
+
+	it( 'should throw error on read without callback', () => {
+		const repository = new ModelRepository< DummyModel >( null, null, null, null );
+
+		expect( () => repository.read( 1 ) ).toThrowError( /not defined/i );
 	} );
 
 	it( 'should update', async () => {
-		mockCallback.mockResolvedValue( dummyModel );
+		const model = new DummyModel();
+		const callback = jest.fn().mockResolvedValue( model );
+		const repository = new ModelRepository< DummyModel >( null, null, callback, null );
 
-		await repository.update( dummyModel );
-		expect( mockCallback ).toHaveBeenCalledWith( dummyModel );
+		const updated = await repository.update( 1, { name: 'new-name' } );
+		expect( updated ).toBe( model );
+		expect( callback ).toHaveBeenCalledWith( 1, { name: 'new-name' } );
+	} );
+
+	it( 'should throw error on update without callback', () => {
+		const repository = new ModelRepository< DummyModel >( null, null, null, null );
+
+		expect( () => repository.update( 1, { name: 'new-name' } ) ).toThrowError( /not defined/i );
 	} );
 
 	it( 'should delete', async () => {
-		mockCallback.mockResolvedValue( true );
+		const callback = jest.fn().mockResolvedValue( true );
+		const repository = new ModelRepository< DummyModel >( null, null, null, callback );
 
-		await repository.delete( dummyModel );
-		expect( mockCallback ).toHaveBeenCalledWith( dummyModel );
+		const success = await repository.delete( 1 );
+		expect( success ).toBe( true );
+		expect( callback ).toHaveBeenCalledWith( 1 );
+	} );
+
+	it( 'should throw error on delete without callback', () => {
+		const repository = new ModelRepository< DummyModel >( null, null, null, null );
+
+		expect( () => repository.delete( 1 ) ).toThrowError( /not defined/i );
 	} );
 } );

tests/e2e/api/src/framework/model-repository.ts

@@ -1,39 +1,32 @@
 import { Model } from '../models/model';
 
-type CreateFn< T > = ( model: T ) => Promise< T >;
-type ReadFn< T, P > = ( params: P ) => Promise< T >;
-type UpdateFn< T > = ( model: T ) => Promise< T >;
-type DeleteFn< T > = ( model: T ) => Promise< boolean >;
-
-/**
- * The standard parameters for reading a model.
- */
-interface DefaultReadParams {
-	id: number;
-}
+export type CreateFn< T > = ( properties: Partial< T > ) => Promise< T >;
+export type ReadFn< IDParam, T > = ( id: IDParam ) => Promise< T >;
+export type UpdateFn< IDParam, T > = ( id: IDParam, properties: Partial< T > ) => Promise< T >;
+export type DeleteFn< IDParam > = ( id: IDParam ) => Promise< boolean >;
 
 /**
  * An interface for repositories that perform CRUD actions.
  */
-export class ModelRepository< T extends Model, ReadParams = DefaultReadParams > {
-	private readonly createHook: CreateFn< T >;
-	private readonly readHook: ReadFn< T, ReadParams >;
-	private readonly updateHook: UpdateFn< T >;
-	private readonly deleteHook: DeleteFn< T >;
+export class ModelRepository< T extends Model, IDParam = number > {
+	private readonly createHook: CreateFn< T > | null;
+	private readonly readHook: ReadFn< IDParam, T > | null;
+	private readonly updateHook: UpdateFn< IDParam, T > | null;
+	private readonly deleteHook: DeleteFn< IDParam > | null;
 
 	/**
 	 * Creates a new repository instance.
 	 *
-	 * @param {Function} createHook The hook for model creation.
-	 * @param {Function} readHook The hook for model reading.
-	 * @param {Function} updateHook The hook for model updating.
-	 * @param {Function} deleteHook The hook for model deletion.
+	 * @param {Function|null} createHook The hook for model creation.
+	 * @param {Function|null} readHook The hook for model reading.
+	 * @param {Function|null} updateHook The hook for model updating.
+	 * @param {Function|null} deleteHook The hook for model deletion.
 	 */
 	public constructor(
-		createHook: CreateFn< T >,
-		readHook: ReadFn< T, ReadParams >,
-		updateHook: UpdateFn< T >,
-		deleteHook: DeleteFn< T >,
+		createHook: CreateFn< T > | null,
+		readHook: ReadFn< IDParam, T > | null,
+		updateHook: UpdateFn< IDParam, T > | null,
+		deleteHook: DeleteFn< IDParam > | null,
 	) {
 		this.createHook = createHook;
 		this.readHook = readHook;
@@ -44,40 +37,57 @@ export class ModelRepository< T extends Model, ReadParams = DefaultReadParams >
 	/**
 	 * Creates the given model.
 	 *
-	 * @param {*} model The model that we would like to create.
+	 * @param {*} properties The properties for the model we'd like to create.
 	 * @return {Promise} A promise that resolves to the model after creation.
 	 */
-	public create( model: T ): Promise< T > {
-		return this.createHook( model );
+	public create( properties: Partial< T > ): Promise< T > {
+		if ( ! this.createHook ) {
+			throw new Error( 'The \'create\' hook is not defined.' );
+		}
+
+		return this.createHook( properties );
 	}
 
 	/**
 	 * Reads the given model.
 	 *
-	 * @param {Object} params The parameters to help with reading the model.
+	 * @param {Object} id The identifier for the model to read.
 	 * @return {Promise} A promise that resolves to the model.
 	 */
-	public read( params: ReadParams ): Promise< T > {
-		return this.readHook( params );
+	public read( id: IDParam ): Promise< T > {
+		if ( ! this.readHook ) {
+			throw new Error( 'The \'read\' hook is not defined.' );
+		}
+
+		return this.readHook( id );
 	}
 
 	/**
 	 * Updates the given model.
 	 *
-	 * @param {*} model The model we want to update.
+	 * @param {*} id The identifier for the model to create.
+	 * @param {*} properties The model properties that we'd like to update.
 	 * @return {Promise} A promise that resolves to the model after updating.
 	 */
-	public update( model: T ): Promise< T > {
-		return this.updateHook( model );
+	public update( id: IDParam, properties: Partial< T > ): Promise< T > {
+		if ( ! this.updateHook ) {
+			throw new Error( 'The \'update\' hook is not defined.' );
+		}
+
+		return this.updateHook( id, properties );
 	}
 
 	/**
 	 * Deletes the given model.
 	 *
-	 * @param {*} model The model we want to delete.
+	 * @param {*} id The identifier for the model to delete.
 	 * @return {Promise} A promise that resolves to "true" on success.
 	 */
-	public delete( model: T ): Promise< boolean > {
-		return this.deleteHook( model );
+	public delete( id: IDParam ): Promise< boolean > {
+		if ( ! this.deleteHook ) {
+			throw new Error( 'The \'delete\' hook is not defined.' );
+		}
+
+		return this.deleteHook( id );
 	}
 }

tests/e2e/api/src/models/product/__tests__/simple-product.spec.ts

@@ -1,68 +0,0 @@
-import { SimpleProduct } from '../simple-product';
-import { mock, MockProxy } from 'jest-mock-extended';
-import { HTTPClient, HTTPResponse } from '../../../http';
-import { ModelRepository } from '../../../framework/model-repository';
-
-describe( 'SimpleProduct', () => {
-	describe( 'restRepository', () => {
-		let httpClient: MockProxy< HTTPClient >;
-		let repository: ModelRepository< SimpleProduct >;
-
-		beforeEach( () => {
-			httpClient = mock< HTTPClient >();
-			repository = SimpleProduct.restRepository( httpClient );
-		} );
-
-		it( 'should create', async () => {
-			httpClient.post.mockResolvedValue( new HTTPResponse( 200, {}, { id: 2 } ) );
-
-			const created = await repository.create( new SimpleProduct( { name: 'test' } ) );
-
-			expect( created ).toHaveProperty( 'id', 2 );
-			expect( httpClient.post ).toHaveBeenCalledWith(
-				'/wc/v3/products',
-				{
-					name: 'test',
-				},
-			);
-		} );
-
-		it( 'should read', async () => {
-			httpClient.get.mockResolvedValue(
-				new HTTPResponse( 200, {}, {
-					id: 12,
-					name: 'test-name',
-				} ),
-			);
-
-			const read = await repository.read( { id: 12 } );
-
-			expect( read ).toHaveProperty( 'id', 12 );
-			expect( httpClient.get ).toHaveBeenCalledWith( '/wc/v3/products/12' );
-		} );
-
-		it( 'should update', async () => {
-			httpClient.put.mockResolvedValue( new HTTPResponse( 200, {}, { id: 1 } ) );
-
-			const updated = await repository.update( new SimpleProduct( { id: 1, name: 'test' } ) );
-
-			expect( updated ).toHaveProperty( 'id', 1 );
-			expect( httpClient.put ).toHaveBeenCalledWith(
-				'/wc/v3/products/1',
-				{
-					id: 1,
-					name: 'test',
-				},
-			);
-		} );
-
-		it( 'should delete', async () => {
-			httpClient.delete.mockResolvedValue( new HTTPResponse( 200, {}, {} ) );
-
-			const response = await repository.delete( new SimpleProduct( { id: 123 } ) );
-
-			expect( response ).toBeTruthy();
-			expect( httpClient.delete ).toHaveBeenCalledWith( '/wc/v3/products/123' );
-		} );
-	} );
-} );

tests/e2e/api/src/models/product/simple-product.ts

@@ -1,8 +1,9 @@
 import { AbstractProduct } from './abstract-product';
-import * as faker from 'faker/locale/en';
 import { HTTPClient } from '../../http';
 import { ModelRepository } from '../../framework/model-repository';
 import { AsyncFactory } from '../../framework/async-factory';
+import { simpleProductFactory } from '../../factories/simple-product';
+import { simpleProductRESTRepository } from '../../repositories/rest/simple-product';
 
 /**
  * The simple product class.
@@ -20,44 +21,7 @@ export class SimpleProduct extends AbstractProduct {
 	 * @return {ModelRepository} The created repository.
 	 */
 	public static restRepository( httpClient: HTTPClient ): ModelRepository< SimpleProduct > {
-		return new ModelRepository(
-			async ( model ) => {
-				const response = await httpClient.post(
-					'/wc/v3/products',
-					{
-						name: model.name,
-					},
-				);
-
-				return Promise.resolve( new SimpleProduct( {
-					id: response.data.id,
-					name: response.data.name,
-				} ) );
-			},
-			async ( params ) => {
-				const response = await httpClient.get( '/wc/v3/products/' + params.id );
-
-				const model = new SimpleProduct(
-					{
-						id: response.data.id,
-						name: response.data.name,
-					},
-				);
-				return Promise.resolve( model );
-			},
-			async ( model ) => {
-				return httpClient.put(
-					'/wc/v3/products/' + model.id,
-					{
-						id: model.id,
-						name: model.name,
-					},
-				).then( () => model );
-			},
-			async ( model ) => {
-				return httpClient.delete( '/wc/v3/products/' + model.id ).then( () => true );
-			},
-		);
+		return simpleProductRESTRepository( httpClient );
 	}
 
 	/**
@@ -67,14 +31,6 @@ export class SimpleProduct extends AbstractProduct {
 	 * @return {AsyncFactory} The new factory instance.
 	 */
 	public static factory( repository: ModelRepository< SimpleProduct > ): AsyncFactory< SimpleProduct > {
-		return new AsyncFactory< SimpleProduct >(
-			( { params } ) => {
-				return new SimpleProduct( {
-					name: params.name ?? faker.commerce.productName(),
-					regularPrice: params.regularPrice ?? faker.commerce.price(),
-				} );
-			},
-			repository.create,
-		);
+		return simpleProductFactory( repository.create );
 	}
 }

tests/e2e/api/src/repositories/rest/__tests__/simple-product.spec.ts

@@ -0,0 +1,29 @@
+import { simpleProductRESTRepository } from '../simple-product';
+import { mock, MockProxy } from 'jest-mock-extended';
+import { HTTPClient, HTTPResponse } from '../../../http';
+import { SimpleProduct } from '../../../models';
+import { ModelRepository } from '../../../framework/model-repository';
+
+describe( 'simpleProductRESTRepository', () => {
+	let httpClient: MockProxy< HTTPClient >;
+	let repository: ModelRepository< SimpleProduct >;
+
+	beforeEach( () => {
+		httpClient = mock< HTTPClient >();
+		repository = simpleProductRESTRepository( httpClient );
+	} );
+
+	it( 'should create', async () => {
+		httpClient.post.mockResolvedValue( new HTTPResponse(
+			200,
+			{},
+			{ id: 123 },
+		) );
+
+		const created = await repository.create( { name: 'Test Product' } );
+
+		expect( created ).toBeInstanceOf( SimpleProduct );
+		expect( created ).toMatchObject( { id: 123 } );
+		expect( httpClient.post ).toHaveBeenCalledWith( '/wc/v3/products', { name: 'Test Product' } );
+	} );
+} );

tests/e2e/api/src/repositories/rest/simple-product.ts

@@ -0,0 +1,40 @@
+import { HTTPClient } from '../../http';
+import { CreateFn, ModelRepository } from '../../framework/model-repository';
+import { SimpleProduct } from '../../models';
+
+/**
+ * Creates a callback for REST model creation.
+ *
+ * @param {HTTPClient} httpClient The HTTP client for requests.
+ * @return {Function} The callback for creating models via the REST API.
+ */
+function restCreate( httpClient: HTTPClient ): CreateFn< SimpleProduct > {
+	return async ( properties ) => {
+		const response = await httpClient.post(
+			'/wc/v3/products',
+			{
+				name: properties.name,
+			},
+		);
+
+		return Promise.resolve( new SimpleProduct( {
+			id: response.data.id,
+			name: response.data.name,
+		} ) );
+	};
+}
+
+/**
+ * Creates a new ModelRepository instance for interacting with models via the REST API.
+ *
+ * @param {HTTPClient} httpClient The HTTP client for the REST requests to be made using.
+ * @return {ModelRepository} A repository for interacting with models via the REST API.
+ */
+export function simpleProductRESTRepository( httpClient: HTTPClient ): ModelRepository< SimpleProduct > {
+	return new ModelRepository(
+		restCreate( httpClient ),
+		null,
+		null,
+		null,
+	);
+}