Vmeda.Online/src/core/classes/tests/database-table.test.ts

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// (C) Copyright 2015 Moodle Pty Ltd.
//
// Licensed 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.
import { mock } from '@/testing/utils';
import { CoreDatabaseTable } from '@classes/database/database-table';
import {
CoreDatabaseCachingStrategy,
CoreDatabaseConfiguration,
CoreDatabaseTableProxy,
} from '@classes/database/database-table-proxy';
import { SQLiteDB, SQLiteDBRecordValues } from '@classes/sqlitedb';
interface User extends SQLiteDBRecordValues {
id: number;
name: string;
surname: string;
}
function userMatches(user: User, conditions: Partial<User>) {
return !Object.entries(conditions).some(([column, value]) => user[column] !== value);
}
function prepareStubs(config: Partial<CoreDatabaseConfiguration> = {}): [User[], SQLiteDB, CoreDatabaseTable<User>] {
const records: User[] = [];
const database = mock<SQLiteDB>({
getRecord: async <T>(_, conditions) => {
const record = records.find(record => userMatches(record, conditions));
if (!record) {
throw new Error();
}
return record as unknown as T;
},
getRecords: async <T>(_, conditions) => records.filter(record => userMatches(record, conditions)) as unknown as T[],
getAllRecords: async <T>() => records as unknown as T[],
deleteRecords: async (_, conditions) => {
const usersToDelete: User[] = [];
for (const user of records) {
if (conditions && !userMatches(user, conditions)) {
continue;
}
usersToDelete.push(user);
}
for (const user of usersToDelete) {
records.splice(records.indexOf(user), 1);
}
return usersToDelete.length;
},
insertRecord: async (_, user: User) => records.push(user) && 1,
});
const table = new CoreDatabaseTableProxy<User>(config, database, 'users');
return [records, database, table];
}
async function testFindItems(records: User[], table: CoreDatabaseTable<User>) {
const john = { id: 1, name: 'John', surname: 'Doe' };
const amy = { id: 2, name: 'Amy', surname: 'Doe' };
records.push(john);
records.push(amy);
await table.initialize();
await expect(table.getOneByPrimaryKey({ id: 1 })).resolves.toEqual(john);
await expect(table.getOneByPrimaryKey({ id: 2 })).resolves.toEqual(amy);
await expect(table.getOne({ surname: 'Doe', name: 'John' })).resolves.toEqual(john);
await expect(table.getOne({ surname: 'Doe', name: 'Amy' })).resolves.toEqual(amy);
}
async function testInsertItems(records: User[], database: SQLiteDB, table: CoreDatabaseTable<User>) {
// Arrange.
const john = { id: 1, name: 'John', surname: 'Doe' };
await table.initialize();
// Act.
await table.insert(john);
// Assert.
expect(database.insertRecord).toHaveBeenCalledWith('users', john);
await expect(table.getOneByPrimaryKey({ id: 1 })).resolves.toEqual(john);
}
async function testDeleteItems(records: User[], database: SQLiteDB, table: CoreDatabaseTable<User>) {
// Arrange.
const john = { id: 1, name: 'John', surname: 'Doe' };
const amy = { id: 2, name: 'Amy', surname: 'Doe' };
const jane = { id: 3, name: 'Jane', surname: 'Smith' };
records.push(john);
records.push(amy);
records.push(jane);
await table.initialize();
// Act.
await table.delete({ surname: 'Doe' });
// Assert.
expect(database.deleteRecords).toHaveBeenCalledWith('users', { surname: 'Doe' });
await expect(table.getOneByPrimaryKey({ id: 1 })).rejects.toThrow();
await expect(table.getOneByPrimaryKey({ id: 2 })).rejects.toThrow();
await expect(table.getOneByPrimaryKey({ id: 3 })).resolves.toEqual(jane);
}
async function testDeleteItemsByPrimaryKey(records: User[], database: SQLiteDB, table: CoreDatabaseTable<User>) {
// Arrange.
const john = { id: 1, name: 'John', surname: 'Doe' };
const amy = { id: 2, name: 'Amy', surname: 'Doe' };
records.push(john);
records.push(amy);
await table.initialize();
// Act.
await table.deleteByPrimaryKey({ id: 1 });
// Assert.
expect(database.deleteRecords).toHaveBeenCalledWith('users', { id: 1 });
await expect(table.getOneByPrimaryKey({ id: 1 })).rejects.toThrow();
await expect(table.getOneByPrimaryKey({ id: 2 })).resolves.toEqual(amy);
}
describe('CoreDatabaseTable with eager caching', () => {
let records: User[];
let database: SQLiteDB;
let table: CoreDatabaseTable<User>;
beforeEach(() => [records, database, table] = prepareStubs({ cachingStrategy: CoreDatabaseCachingStrategy.Eager }));
it('reads all records on initialization', async () => {
await table.initialize();
expect(database.getAllRecords).toHaveBeenCalledWith('users');
});
it('finds items', async () => {
await testFindItems(records, table);
expect(database.getRecord).not.toHaveBeenCalled();
});
it('inserts items', () => testInsertItems(records, database, table));
it('deletes items', () => testDeleteItems(records, database, table));
it('deletes items by primary key', () => testDeleteItemsByPrimaryKey(records, database, table));
});
describe('CoreDatabaseTable with lazy caching', () => {
let records: User[];
let database: SQLiteDB;
let table: CoreDatabaseTable<User>;
beforeEach(() => [records, database, table] = prepareStubs({ cachingStrategy: CoreDatabaseCachingStrategy.Lazy }));
it('reads no records on initialization', async () => {
await table.initialize();
expect(database.getRecords).not.toHaveBeenCalled();
expect(database.getAllRecords).not.toHaveBeenCalled();
});
it('finds items', async () => {
await testFindItems(records, table);
expect(database.getRecord).toHaveBeenCalledTimes(2);
});
it('inserts items', () => testInsertItems(records, database, table));
it('deletes items', () => testDeleteItems(records, database, table));
it('deletes items by primary key', () => testDeleteItemsByPrimaryKey(records, database, table));
});
describe('CoreDatabaseTable with no caching', () => {
let records: User[];
let database: SQLiteDB;
let table: CoreDatabaseTable<User>;
beforeEach(() => [records, database, table] = prepareStubs({ cachingStrategy: CoreDatabaseCachingStrategy.None }));
it('reads no records on initialization', async () => {
await table.initialize();
expect(database.getRecords).not.toHaveBeenCalled();
expect(database.getAllRecords).not.toHaveBeenCalled();
});
it('finds items', async () => {
await testFindItems(records, table);
expect(database.getRecord).toHaveBeenCalledTimes(4);
});
it('inserts items', () => testInsertItems(records, database, table));
it('deletes items', () => testDeleteItems(records, database, table));
it('deletes items by primary key', () => testDeleteItemsByPrimaryKey(records, database, table));
});