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add.spec.js
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add.spec.js
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import { add as addRamda } from 'ramda'
import { compareCombinations } from './_internals/testUtils.js'
import { add } from './add.js'
test('with number', () => {
expect(add(2, 3)).toBe(5)
expect(add(7)(10)).toBe(17)
})
test('string is bad input', () => {
expect(add('foo', 'bar')).toBeNaN()
})
test('ramda specs', () => {
expect(add('1', '2')).toBe(3)
expect(add(1, '2')).toBe(3)
expect(add(true, false)).toBe(1)
expect(add(null, null)).toBe(0)
expect(add(undefined, undefined)).toBeNaN()
expect(add(new Date(1), new Date(2))).toBe(3)
})
const possibleInputs = [
/foo/,
'foo',
true,
3,
NaN,
4,
[],
Promise.resolve(1),
]
describe('brute force', () => {
compareCombinations({
fn : add,
fnRamda : addRamda,
firstInput : possibleInputs,
secondInput : possibleInputs,
callback : errorsCounters => {
expect(errorsCounters).toMatchInlineSnapshot(`
{
"ERRORS_MESSAGE_MISMATCH": 0,
"ERRORS_TYPE_MISMATCH": 0,
"RESULTS_MISMATCH": 0,
"SHOULD_NOT_THROW": 0,
"SHOULD_THROW": 0,
"TOTAL_TESTS": 64,
}
`)
},
})
})