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feat: allow next challenge's seed to be a solution (#39145)

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* feat: allow next challenge's seed to be a solution
This commit is contained in:
Oliver Eyton-Williams
2020-06-30 06:33:28 +02:00
committed by Mrugesh Mohapatra
parent 4f1be63055
commit fd7a8c0d5e
3 changed files with 272 additions and 3 deletions
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252
curriculum/test/utils/sort-challenges.test.js Normal file
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/* global expect */
const { sortChallenges } = require('./sort-challenges');
const challenges = [
{
name: 'HTML - project 1 - step 1',
superOrder: 1,
order: 1,
challengeOrder: 1
},
{
name: 'HTML - project 1 - step 2',
superOrder: 1,
order: 1,
challengeOrder: 2
},
{
name: 'HTML - project 1 - step 3',
superOrder: 1,
order: 1,
challengeOrder: 3
},
{
name: 'HTML - project 1 - step 4',
superOrder: 1,
order: 1,
challengeOrder: 4
},
{
name: 'HTML - project 2 - step 1',
superOrder: 1,
order: 2,
challengeOrder: 1
},
{
name: 'HTML - project 2 - step 2',
superOrder: 1,
order: 2,
challengeOrder: 2
},
{
name: 'HTML - project 2 - step 3',
superOrder: 1,
order: 2,
challengeOrder: 3
},
{
name: 'HTML - project 2 - step 4',
superOrder: 1,
order: 2,
challengeOrder: 4
},
{
name: 'HTML - project 3 - step 1',
superOrder: 1,
order: 3,
challengeOrder: 1
},
{
name: 'HTML - project 3 - step 2',
superOrder: 1,
order: 3,
challengeOrder: 2
},
{
name: 'HTML - project 3 - step 3',
superOrder: 1,
order: 3,
challengeOrder: 3
},
{
name: 'HTML - project 3 - step 4',
superOrder: 1,
order: 3,
challengeOrder: 4
},
{
name: 'CSS - project 1 - step 1',
superOrder: 2,
order: 1,
challengeOrder: 1
},
{
name: 'CSS - project 1 - step 2',
superOrder: 2,
order: 1,
challengeOrder: 2
},
{
name: 'CSS - project 1 - step 3',
superOrder: 2,
order: 1,
challengeOrder: 3
},
{
name: 'CSS - project 1 - step 4',
superOrder: 2,
order: 1,
challengeOrder: 4
},
{
name: 'CSS - project 2 - step 1',
superOrder: 2,
order: 2,
challengeOrder: 1
},
{
name: 'CSS - project 2 - step 2',
superOrder: 2,
order: 2,
challengeOrder: 2
},
{
name: 'CSS - project 2 - step 3',
superOrder: 2,
order: 2,
challengeOrder: 3
},
{
name: 'CSS - project 2 - step 4',
superOrder: 2,
order: 2,
challengeOrder: 4
},
{
name: 'CSS - project 3 - step 1',
superOrder: 2,
order: 3,
challengeOrder: 1
},
{
name: 'CSS - project 3 - step 2',
superOrder: 2,
order: 3,
challengeOrder: 2
},
{
name: 'CSS - project 3 - step 3',
superOrder: 2,
order: 3,
challengeOrder: 3
},
{
name: 'CSS - project 3 - step 4',
superOrder: 2,
order: 3,
challengeOrder: 4
},
{
name: 'JS - project 1 - step 1',
superOrder: 3,
order: 1,
challengeOrder: 1
},
{
name: 'JS - project 1 - step 2',
superOrder: 3,
order: 1,
challengeOrder: 2
},
{
name: 'JS - project 1 - step 3',
superOrder: 3,
order: 1,
challengeOrder: 3
},
{
name: 'JS - project 1 - step 4',
superOrder: 3,
order: 1,
challengeOrder: 4
},
{
name: 'JS - project 2 - step 1',
superOrder: 3,
order: 2,
challengeOrder: 1
},
{
name: 'JS - project 2 - step 2',
superOrder: 3,
order: 2,
challengeOrder: 2
},
{
name: 'JS - project 2 - step 3',
superOrder: 3,
order: 2,
challengeOrder: 3
},
{
name: 'JS - project 2 - step 4',
superOrder: 3,
order: 2,
challengeOrder: 4
},
{
name: 'JS - project 3 - step 1',
superOrder: 3,
order: 3,
challengeOrder: 1
},
{
name: 'JS - project 3 - step 2',
superOrder: 3,
order: 3,
challengeOrder: 2
},
{
name: 'JS - project 3 - step 3',
superOrder: 3,
order: 3,
challengeOrder: 3
},
{
name: 'JS - project 3 - step 4',
superOrder: 3,
order: 3,
challengeOrder: 4
}
];
describe('sortChallenges', () => {
it('sorts challenges by superblock, block and challenge order', () => {
const copyOfChallenges = [...challenges];
shuffle(copyOfChallenges);
const actualChallenges = sortChallenges(copyOfChallenges);
expect(actualChallenges).toEqual(challenges);
});
it('does not change the original array', () => {
const copyOfChallenges = [...challenges];
copyOfChallenges[0] = {
name: 'JS - project 3 - step 4',
superOrder: 3,
order: 3,
challengeOrder: 4
};
const actualChallenges = sortChallenges(copyOfChallenges);
expect(actualChallenges[0]).not.toEqual(copyOfChallenges[0]);
});
});
// Use the Fisher–Yates shuffle algorithm to shuffle array
const shuffle = arr => {
for (let i = arr.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[arr[i], arr[j]] = [arr[j], arr[i]];
}
};