How to mock dependency classes for unit testing with mocha.js?

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const sinon = require('sinon');
const assert = require('assert');

// Mock the dependency class
const mockDependency = {
  someMethod: sinon.stub().returns('mocked response')
};

// Inject the mock dependency into the class you are testing
const classUnderTest = require('../path/to/your/class')(mockDependency);

describe('ClassUnderTest', () => {
  it('should call the dependency method with the right arguments', () => {
    classUnderTest.someMethod();
    assert(mockDependency.someMethod.calledOnce);
  });

  it('should return the mocked response', () => {
    const result = classUnderTest.someMethod();
    assert.equal(result, 'mocked response');
  });
});

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let mockDependency = {
  someMethod: () => 'mocked response'
};

// Override the require statement for the dependency class
const originalRequire = require;
require = (moduleName) => {
  if (moduleName === 'dependencyModule') {
    return mockDependency;
  } else {
    return originalRequire(moduleName);
  }
};

const classUnderTest = require('../path/to/your/class');

// Reset the require statement after the test is done
after(() => {
  require = originalRequire;
});

describe('ClassUnderTest', () => {
  // Test your class under test with the mocked dependency class
});