def test_js_number(self):
import js
s = js.Number(42)
assert s == 42
assert str(s) == "42"
assert s + 1 == 43
assert s * 2 == 84
assert s + js.Number(17) == js.Number(59)
def test_js_truthiness(self):
import js
assert not js.null
assert not js.undefined
assert not js.false
assert not js.Number(0)
assert not js.String("")
assert js.true
assert js.Number(12)
assert js.String("xyz")