forked from root/public
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
1022 B
39 lines
1022 B
export const tests = [] |
|
const t = (f) => tests.push(f) |
|
const cantEdit = (fn) => { |
|
try { |
|
fn() |
|
} catch (err) { |
|
return true |
|
} |
|
} |
|
|
|
t(() => nested.constructor === Object) |
|
|
|
// nested is constant and can not be re-assigned |
|
t(({ fail }) => nested && fail(() => (nested = 10))) |
|
|
|
t(() => nested.obj.constructor === Object) |
|
t(() => typeof nested.obj.str === 'string') |
|
t(() => typeof nested.obj.num === 'number') |
|
t(() => typeof nested.obj.bool === 'boolean') |
|
|
|
t(() => Array.isArray(nested.arr)) |
|
t(() => nested.arr[0] === 4) |
|
t(() => nested.arr[1] === undefined) |
|
t(() => nested.arr[2] === '2') |
|
t(() => nested.arr.length === 3) |
|
|
|
// nested is frozen and can not be changed |
|
t(() => cantEdit(() => (nested.obj = 5))) |
|
t(() => nested.obj !== 5) |
|
|
|
// nested.obj is also frozen and can not be changed |
|
t(() => cantEdit(() => (nested.obj.update = 5))) |
|
t(() => nested.obj.update === undefined) |
|
|
|
// nested.arr is not frozen and can be changed |
|
t(() => nested.arr.push('hot stuff')) |
|
t(() => nested.arr.length === 4) |
|
|
|
Object.freeze(tests)
|
|
|