Stubs

Stubs

Use ks.stub() to create mock functions.

ks.stub(Object, MethodName, MockReturnValue);

import Kensa from 'kensajs';
import exampleModuleStub from './lib/example';
import { add } from './lib/add';

let ks = Kensa();

// Normally
// Inside add function, exampleModuleStub.testFunction is called
ks.test({
  title: 'Test Item',
  input: () => add(1, 1),
  expect: 2,
});

// Stubbing testFunction to return 5
ks.stub(exampleModuleStub, 'testFunction', 5);

ks.test({
  title: 'Test Item',
  input: () => add(1, 1),
  expect: 5,
});

// Clearing stubs (if not cleared, it carries over to the next test)
// If changing the return value, clear it first then re-stub.
ks.clearStub();

// Stubbing testFunction to return 6
ks.stub(exampleModuleStub, 'testFunction', 6);

// Test with a simple value
ks.test({
  title: '1,Simple Value Test',
  input: () => add(1, 1),
  expect: 6,
});

ks.run();

実行結果

✓  Test Item
✓  Test Item
✓  Test Item

TOTAL: 3, PASS: 3, FAIL: 0