init

tests/unit/models/plugins/paginate.plugin.test.js

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+const mongoose = require('mongoose');
+const setupTestDB = require('../../../utils/setupTestDB');
+const paginate = require('../../../../src/models/plugins/paginate.plugin');
+
+const projectSchema = mongoose.Schema({
+  name: {
+    type: String,
+    required: true,
+  },
+});
+
+projectSchema.virtual('tasks', {
+  ref: 'Task',
+  localField: '_id',
+  foreignField: 'project',
+});
+
+projectSchema.plugin(paginate);
+const Project = mongoose.model('Project', projectSchema);
+
+const taskSchema = mongoose.Schema({
+  name: {
+    type: String,
+    required: true,
+  },
+  project: {
+    type: mongoose.SchemaTypes.ObjectId,
+    ref: 'Project',
+    required: true,
+  },
+});
+
+taskSchema.plugin(paginate);
+const Task = mongoose.model('Task', taskSchema);
+
+setupTestDB();
+
+describe('paginate plugin', () => {
+  describe('populate option', () => {
+    test('should populate the specified data fields', async () => {
+      const project = await Project.create({ name: 'Project One' });
+      const task = await Task.create({ name: 'Task One', project: project._id });
+
+      const taskPages = await Task.paginate({ _id: task._id }, { populate: 'project' });
+
+      expect(taskPages.results[0].project).toHaveProperty('_id', project._id);
+    });
+
+    test('should populate nested fields', async () => {
+      const project = await Project.create({ name: 'Project One' });
+      const task = await Task.create({ name: 'Task One', project: project._id });
+
+      const projectPages = await Project.paginate({ _id: project._id }, { populate: 'tasks.project' });
+      const { tasks } = projectPages.results[0];
+
+      expect(tasks).toHaveLength(1);
+      expect(tasks[0]).toHaveProperty('_id', task._id);
+      expect(tasks[0].project).toHaveProperty('_id', project._id);
+    });
+  });
+});

tests/unit/models/plugins/toJSON.plugin.test.js

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+const mongoose = require('mongoose');
+const { toJSON } = require('../../../../src/models/plugins');
+
+describe('toJSON plugin', () => {
+  let connection;
+
+  beforeEach(() => {
+    connection = mongoose.createConnection();
+  });
+
+  it('should replace _id with id', () => {
+    const schema = mongoose.Schema();
+    schema.plugin(toJSON);
+    const Model = connection.model('Model', schema);
+    const doc = new Model();
+    expect(doc.toJSON()).not.toHaveProperty('_id');
+    expect(doc.toJSON()).toHaveProperty('id', doc._id.toString());
+  });
+
+  it('should remove __v', () => {
+    const schema = mongoose.Schema();
+    schema.plugin(toJSON);
+    const Model = connection.model('Model', schema);
+    const doc = new Model();
+    expect(doc.toJSON()).not.toHaveProperty('__v');
+  });
+
+  it('should remove createdAt and updatedAt', () => {
+    const schema = mongoose.Schema({}, { timestamps: true });
+    schema.plugin(toJSON);
+    const Model = connection.model('Model', schema);
+    const doc = new Model();
+    expect(doc.toJSON()).not.toHaveProperty('createdAt');
+    expect(doc.toJSON()).not.toHaveProperty('updatedAt');
+  });
+
+  it('should remove any path set as private', () => {
+    const schema = mongoose.Schema({
+      public: { type: String },
+      private: { type: String, private: true },
+    });
+    schema.plugin(toJSON);
+    const Model = connection.model('Model', schema);
+    const doc = new Model({ public: 'some public value', private: 'some private value' });
+    expect(doc.toJSON()).not.toHaveProperty('private');
+    expect(doc.toJSON()).toHaveProperty('public');
+  });
+
+  it('should remove any nested paths set as private', () => {
+    const schema = mongoose.Schema({
+      public: { type: String },
+      nested: {
+        private: { type: String, private: true },
+      },
+    });
+    schema.plugin(toJSON);
+    const Model = connection.model('Model', schema);
+    const doc = new Model({
+      public: 'some public value',
+      nested: {
+        private: 'some nested private value',
+      },
+    });
+    expect(doc.toJSON()).not.toHaveProperty('nested.private');
+    expect(doc.toJSON()).toHaveProperty('public');
+  });
+
+  it('should also call the schema toJSON transform function', () => {
+    const schema = mongoose.Schema(
+      {
+        public: { type: String },
+        private: { type: String },
+      },
+      {
+        toJSON: {
+          transform: (doc, ret) => {
+            // eslint-disable-next-line no-param-reassign
+            delete ret.private;
+          },
+        },
+      }
+    );
+    schema.plugin(toJSON);
+    const Model = connection.model('Model', schema);
+    const doc = new Model({ public: 'some public value', private: 'some private value' });
+    expect(doc.toJSON()).not.toHaveProperty('private');
+    expect(doc.toJSON()).toHaveProperty('public');
+  });
+});

tests/unit/models/user.model.test.js

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+const faker = require('faker');
+const { User } = require('../../../src/models');
+
+describe('User model', () => {
+  describe('User validation', () => {
+    let newUser;
+    beforeEach(() => {
+      newUser = {
+        name: faker.name.findName(),
+        email: faker.internet.email().toLowerCase(),
+        password: 'password1',
+        role: 'user',
+      };
+    });
+
+    test('should correctly validate a valid user', async () => {
+      await expect(new User(newUser).validate()).resolves.toBeUndefined();
+    });
+
+    test('should throw a validation error if email is invalid', async () => {
+      newUser.email = 'invalidEmail';
+      await expect(new User(newUser).validate()).rejects.toThrow();
+    });
+
+    test('should throw a validation error if password length is less than 8 characters', async () => {
+      newUser.password = 'passwo1';
+      await expect(new User(newUser).validate()).rejects.toThrow();
+    });
+
+    test('should throw a validation error if password does not contain numbers', async () => {
+      newUser.password = 'password';
+      await expect(new User(newUser).validate()).rejects.toThrow();
+    });
+
+    test('should throw a validation error if password does not contain letters', async () => {
+      newUser.password = '11111111';
+      await expect(new User(newUser).validate()).rejects.toThrow();
+    });
+
+    test('should throw a validation error if role is unknown', async () => {
+      newUser.role = 'invalid';
+      await expect(new User(newUser).validate()).rejects.toThrow();
+    });
+  });
+
+  describe('User toJSON()', () => {
+    test('should not return user password when toJSON is called', () => {
+      const newUser = {
+        name: faker.name.findName(),
+        email: faker.internet.email().toLowerCase(),
+        password: 'password1',
+        role: 'user',
+      };
+      expect(new User(newUser).toJSON()).not.toHaveProperty('password');
+    });
+  });
+});