import { removeNullFields } from './sanitize-data.js'
describe('removeNullFields', () => {
it('should remove null fields from objects including nested objects', () => {
const input = {
name: 'John',
age: null,
email: 'john@example.com',
phone: null,
address: {
street: '123 Main St',
city: null,
country: 'USA',
},
}
const result = removeNullFields(input)
expect(result).toEqual({
name: 'John',
email: 'john@example.com',
address: {
street: '123 Main St',
country: 'USA',
},
})
})
it('should handle arrays with null values', () => {
const input = {
items: [
{ id: 1, value: 'test' },
{ id: 2, value: null },
{ id: 3, value: 'another' },
],
}
const result = removeNullFields(input)
expect(result).toEqual({
items: [{ id: 1, value: 'test' }, { id: 2 }, { id: 3, value: 'another' }],
})
})
it('should handle null objects', () => {
const result = removeNullFields(null)
expect(result).toBeNull()
})
it('should remove empty objects but keep empty arrays', () => {
const input = {
something: 'hello',
another: {},
yetAnother: [],
}
const result = removeNullFields(input)
expect(result).toEqual({
something: 'hello',
yetAnother: [],
})
})
it('should remove empty objects but keep empty arrays in nested structures', () => {
const input = {
name: 'Test',
metadata: {},
tags: [],
nested: {
data: 'value',
emptyObj: {},
emptyArr: [],
deepNested: {
anotherEmpty: {},
},
},
items: [
{ id: 1, data: 'test', empty: {} },
{ id: 2, list: [] },
],
}
const result = removeNullFields(input)
expect(result).toEqual({
name: 'Test',
tags: [],
nested: {
data: 'value',
emptyArr: [],
},
items: [
{ id: 1, data: 'test' },
{ id: 2, list: [] },
],
})
})
it('should keep both empty and non-empty arrays, but remove empty objects', () => {
const input = {
emptyArray: [],
arrayWithValues: [1, 2, 3],
emptyObject: {},
objectWithProps: { key: 'value' },
}
const result = removeNullFields(input)
expect(result).toEqual({
emptyArray: [],
arrayWithValues: [1, 2, 3],
objectWithProps: { key: 'value' },
})
})
})
