eulersMethod is a function.");'
  - text: ''
    testString: 'assert(typeof eulersMethod(0, 100, 100, 10) === "number", "eulersMethod(0, 100, 100, 10) should return a number.");'
  - text: ''
    testString: 'assert.equal(eulersMethod(0, 100, 100, 2), 20.0424631833732, "eulersMethod(0, 100, 100, 10) should return 20.0424631833732.");'
  - text: ''
    testString: 'assert.equal(eulersMethod(0, 100, 100, 5), 20.01449963666907, "eulersMethod(0, 100, 100, 10) should return 20.01449963666907.");'
  - text: ''
    testString: 'assert.equal(eulersMethod(0, 100, 100, 10), 20.000472392, "eulersMethod(0, 100, 100, 10) should return 20.000472392.");'
```