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Test migration to jest by hand

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Apparently using regular expressions is way easier.
This commit is contained in:
Angelos Chalaris
2018-06-18 15:15:56 +03:00
parent 977949ca61
commit 4f7da1be9b
894 changed files with 5917 additions and 3607 deletions
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11
test/stringPermutations/stringPermutations.js Normal file
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const stringPermutations = str => {
if (str.length <= 2) return str.length === 2 ? [str, str[1] + str[0]] : [str];
return str
.split('')
.reduce(
(acc, letter, i) =>
acc.concat(stringPermutations(str.slice(0, i) + str.slice(i + 1)).map(val => letter + val)),
[]
);
};
module.exports = stringPermutations;

12
test/stringPermutations/stringPermutations.test.js Normal file
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const expect = require('expect');
const stringPermutations = require('./stringPermutations.js');
test('stringPermutations is a Function', () => {
expect(stringPermutations).toBeInstanceOf(Function);
});
t.deepEqual(stringPermutations('abc'), ['abc','acb','bac','bca','cab','cba'], "Generates all stringPermutations of a string");
t.deepEqual(stringPermutations('a'), ['a'], "Works for single-letter strings");
t.deepEqual(stringPermutations(''), [''], "Works for empty strings");