freeCodeCamp/curriculum/challenges/english/06-quality-assurance/quality-assurance-and-testing-with-chai/test-if-a-value-falls-within-a-specific-range.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
587d824c367417b2b2512c4f	Test if a Value Falls within a Specific Range	2	301598	test-if-a-value-falls-within-a-specific-range

--description--

As a reminder, this project is being built upon the following starter project on Repl.it, or cloned from GitHub.

.approximately(actual, expected, delta, [message])

Asserts that the actual is equal to expected, to within a +/- delta range.

--instructions--

Within tests/1_unit-tests.js under the test labelled #10 in the Comparisons suite, change each assert to assert.approximately to make the test pass (should evaluate to true).

Choose the minimum range (3rd parameter) to make the test always pass. It should be less than 1.

--hints--

All tests should pass.

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(
    (data) => {
      assert.equal(data.state, 'passed');
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

You should choose the correct range for the first assertion - approximately(actual, expected, range).

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(
    (data) => {
      assert.equal(data.assertions[0].method, 'approximately');
      assert.equal(
        data.assertions[0].args[2],
        0.5,
        "weirdNumbers(0.5) is in the range (0.5, 1.5]. It's within 1 +/- 0.5"
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

You should choose the correct range for the second assertion - approximately(actual, expected, range).

(getUserInput) =>
  $.get(getUserInput('url') + '/_api/get-tests?type=unit&n=9').then(
    (data) => {
      assert.equal(data.assertions[1].method, 'approximately');
      assert.equal(
        data.assertions[1].args[2],
        0.8,
        "weirdNumbers(0.2) is in the range (0.2, 1.2]. It's within 1 +/- 0.8"
      );
    },
    (xhr) => {
      throw new Error(xhr.responseText);
    }
  );

--solutions--

/**
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  Please check our contributing guidelines to learn more.
*/