service-core/test/defaults.test.mjs

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2022-01-18 11:48:35 +00:00
import { Eltro as t, assert} from 'eltro'
import { isObject, defaults } from '../core/defaults.mjs'
t.describe('#isObject()', () => {
t.test('should return false for invalid objects', function() {
let tests = [
[],
'',
'asdf',
12341,
0,
]
tests.forEach(function(check) {
assert.strictEqual(isObject(check), false)
})
})
t.test('should return true for valid objects', function() {
let tests = [
{},
new Object(),
]
tests.forEach(function(check) {
assert.strictEqual(isObject(check), true)
})
})
})
t.describe('#defaults()', () => {
t.test('should throw if original is missing or invalid', () => {
assert.throws(function() { defaults() })
assert.throws(function() { defaults('asdf') })
assert.throws(function() { defaults('') })
assert.throws(function() { defaults(null) })
assert.throws(function() { defaults(1234) })
assert.throws(function() { defaults([]) })
})
t.test('should not override existing variables', () => {
let assertOutput = { a: 2 }
defaults(assertOutput, { a: 1 })
assert.deepStrictEqual(assertOutput, { a: 2 })
})
t.test('should allow nesting through objects', () => {
let def = { a: { b: 2 } }
let inside = { a: { c: 3} }
defaults(inside, def)
assert.deepStrictEqual(inside.a, {
b: 2,
c: 3,
})
})
t.test('should not return new reference', () => {
let assertInput = { a: 1 }
let existing = assertInput
defaults(assertInput, { b: 2 })
assert.strictEqual(assertInput, existing)
})
})