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87 lines
2.3 KiB
87 lines
2.3 KiB
export const tests = [] |
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const t = (f) => tests.push(f) |
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const isConst = (name) => { |
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try { |
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eval(`${name} = 'm'`) |
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return false |
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} catch (err) { |
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return true |
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} |
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} |
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// escapeStr |
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// is declared and of type string |
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t(() => typeof escapeStr === 'string') |
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// should include the character ' |
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t(() => escapeStr.includes("'")) |
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// should include the character " |
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t(() => escapeStr.includes('"')) |
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// should include the character ` |
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t(() => escapeStr.includes('`')) |
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// should include the character / |
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t(() => escapeStr.includes('/')) |
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// should include the character \ |
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t(() => escapeStr.includes('\\')) |
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// arr |
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t(() => Array.isArray(arr)) // arr is declared and is an array |
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t(({ eq }) => eq(arr[0], 4)) // arr first element is 4 |
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t(({ eq }) => eq(arr[1], '2')) // arr second element is "2" |
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t(({ eq }) => eq(arr.length, 2)) // arr length is 2 |
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// obj |
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// obj is declared and of type object |
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t(() => obj.constructor === Object) |
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// obj is constant and can not be re-assigned |
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t(({ fail }) => obj && fail(() => (obj = 10))) |
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// obj.str is of type string |
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t(() => typeof obj.str === 'string') |
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// obj.num is of type number |
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t(() => typeof obj.num === 'number') |
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// obj.bool is of type boolean |
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t(() => typeof obj.bool === 'boolean') |
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// obj.undef is of type undefined |
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t(() => 'undef' in obj && typeof obj.undef === 'undefined') |
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// nested |
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const cantEdit = (fn) => { |
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try { |
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fn() |
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} catch (err) { |
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return true |
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} |
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} |
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t(() => nested.constructor === Object) |
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// nested is constant and can not be re-assigned |
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t(({ fail }) => nested && fail(() => (nested = 10))) |
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t(() => nested.obj.constructor === Object) |
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t(() => typeof nested.obj.str === 'string') |
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t(() => typeof nested.obj.num === 'number') |
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t(() => typeof nested.obj.bool === 'boolean') |
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t(() => Array.isArray(nested.arr)) |
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t(() => nested.arr[0] === 4) |
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t(() => nested.arr[1] === undefined) |
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t(() => nested.arr[2] === '2') |
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t(() => nested.arr.length === 3) |
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// nested is frozen and can not be changed |
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t(() => cantEdit(() => (nested.obj = 5))) |
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t(() => nested.obj !== 5) |
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// nested.obj is also frozen and can not be changed |
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t(() => cantEdit(() => (nested.obj.update = 5))) |
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t(() => nested.obj.update === undefined) |
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// nested.arr is not frozen and can be changed |
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t(() => cantEdit(() => nested.arr.push('hot stuff'))) |
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t(() => nested.arr.length === 3) |
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// check if all variable are const |
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t(() => ['escapeStr', 'arr', 'obj', 'nested'] |
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.every(isConst)) |
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Object.freeze(tests)
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