forked from graphql/graphql-js
/
genFuzzStrings-test.js
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/
genFuzzStrings-test.js
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import { expect } from 'chai';
import { describe, it } from 'mocha';
import { genFuzzStrings } from '../genFuzzStrings';
function expectFuzzStrings(options: {|
allowedChars: Array<string>,
maxLength: number,
|}) {
return expect(Array.from(genFuzzStrings(options)));
}
describe('genFuzzStrings', () => {
it('always provide empty string', () => {
expectFuzzStrings({ allowedChars: [], maxLength: 0 }).to.deep.equal(['']);
expectFuzzStrings({ allowedChars: [], maxLength: 1 }).to.deep.equal(['']);
expectFuzzStrings({ allowedChars: ['a'], maxLength: 0 }).to.deep.equal([
'',
]);
});
it('generate strings with single character', () => {
expectFuzzStrings({ allowedChars: ['a'], maxLength: 1 }).to.deep.equal([
'',
'a',
]);
expectFuzzStrings({
allowedChars: ['a', 'b', 'c'],
maxLength: 1,
}).to.deep.equal(['', 'a', 'b', 'c']);
});
it('generate strings with multiple character', () => {
expectFuzzStrings({ allowedChars: ['a'], maxLength: 2 }).to.deep.equal([
'',
'a',
'aa',
]);
expectFuzzStrings({
allowedChars: ['a', 'b', 'c'],
maxLength: 2,
}).to.deep.equal([
'',
'a',
'b',
'c',
'aa',
'ab',
'ac',
'ba',
'bb',
'bc',
'ca',
'cb',
'cc',
]);
});
it('generate strings longer than possible number of characters', () => {
expectFuzzStrings({
allowedChars: ['a', 'b'],
maxLength: 3,
}).to.deep.equal([
'',
'a',
'b',
'aa',
'ab',
'ba',
'bb',
'aaa',
'aab',
'aba',
'abb',
'baa',
'bab',
'bba',
'bbb',
]);
});
});