@zeix/ui-element
Version:
UIElement - a HTML-first library for reactive Web Components
132 lines (118 loc) • 3.28 kB
HTML
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>asNumber Tests</title>
</head>
<body>
<script type="module">
import { runTests } from '@web/test-runner-mocha'
import { assert } from '@esm-bundle/chai'
import { asNumber } from '../../index.dev.js'
runTests(() => {
const body = document.querySelector('body')
describe('asNumber()', function () {
it('should be 0 for empty string', function () {
const result = asNumber()(body, '')
assert.equal(
result,
0,
'Should return 0 for boolean attribute',
)
})
it('should be 0 for non-parsable string', function () {
const result = asNumber()(body, 'any')
assert.equal(
result,
0,
'Should return 0 for non-parsable attribute',
)
})
it('should be 0 for undefined', function () {
const result = asNumber()()
assert.equal(
result,
0,
'Should return 0 for undefined attribute',
)
})
it('should be 42 for "42"', function () {
const result = asNumber()(body, '42')
assert.equal(
result,
42,
'Should return number for parsable attribute with integer value',
)
})
it('should be 3.14 for "3.14"', function () {
const result = asNumber()(body, '3.14')
assert.equal(
result,
3.14,
'Should return number for parsable attribute with floating point value',
)
})
it('should be 9007199254740991.1 for String(Number.MAX_SAFE_INTEGER + 0.1)', function () {
const result = asNumber()(
body,
String(Number.MAX_SAFE_INTEGER + 0.1),
)
assert.equal(
result,
9007199254740991.1,
'Should return number for parsable attribute with floating point value outside safe range',
)
})
it('should be -4 for " -4 "', function () {
const result = asNumber()(body, ' -4 ')
assert.equal(
result,
-4,
'Should return number for parsable attribute with integer value and ignored whitespace',
)
})
it('should use custom fallback for undefined', function () {
const result = asNumber(3.14)()
assert.equal(
result,
3.14,
'Should return custom fallback for undefined attribute',
)
})
it('should use custom fallback for null', function () {
const result = asNumber(2.718)(body, null)
assert.equal(
result,
2.718,
'Should return custom fallback for null attribute',
)
})
it('should be 100000 for "1e5"', function () {
const result = asNumber()(body, '1e5')
assert.equal(
result,
100000,
'Should parse scientific notation',
)
})
it('should be 0.0025 for "2.5e-3"', function () {
const result = asNumber()(body, '2.5e-3')
assert.equal(
result,
0.0025,
'Should parse negative scientific notation',
)
})
it('should be 0 for "Infinity"', function () {
const result = asNumber()(body, 'Infinity')
assert.equal(
result,
0,
'Should return fallback for Infinity (not finite)',
)
})
})
})
</script>
</body>
</html>