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'use strict';
describe('JSONPath - Examples', function () {
// tests based on examples at http://goessner.net/articles/jsonpath/
const json = {
"store": {
"book": [{
"category": "reference",
"author": "Nigel Rees",
"title": "Sayings of the Century",
"price": 8.95
},
{
"category": "fiction",
"author": "Evelyn Waugh",
"title": "Sword of Honour",
"price": 12.99
},
{
"category": "fiction",
"author": "Herman Melville",
"title": "Moby Dick",
"isbn": "0-553-21311-3",
"price": 8.99
},
{
"category": "fiction",
"author": "J. R. R. Tolkien",
"title": "The Lord of the Rings",
"isbn": "0-395-19395-8",
"price": 22.99
}],
"bicycle": {
"color": "red",
"price": 19.95
}
}
};
it('wildcards (with and without $.)', () => {
const books = json.store.book;
const expected = [books[0].author, books[1].author, books[2].author, books[3].author];
let result = jsonpath({json, path: '$.store.book[*].author'});
assert.deepEqual(expected, result);
result = jsonpath({json, path: 'store.book[*].author'});
assert.deepEqual(expected, result);
});
it('all properties, entire tree', () => {
const books = json.store.book;
const expected = [books[0].author, books[1].author, books[2].author, books[3].author];
const result = jsonpath({json, path: '$..author'});
assert.deepEqual(expected, result);
});
it('all sub properties, single level', () => {
const expected = [json.store.book, json.store.bicycle];
const result = jsonpath({json, path: '$.store.*'});
assert.deepEqual(expected, result);
});
it('all sub properties, entire tree', () => {
const books = json.store.book;
const expected = [books[0].price, books[1].price, books[2].price, books[3].price, json.store.bicycle.price];
const result = jsonpath({json, path: '$.store..price'});
assert.deepEqual(expected, result);
});
it('n property of entire tree', () => {
const books = json.store.book;
const expected = [books[2]];
const result = jsonpath({json, path: '$..book[2]'});
assert.deepEqual(expected, result);
});
it('last property of entire tree', () => {
const books = json.store.book;
const expected = [books[3]];
let result = jsonpath({json, path: '$..book[(@.length-1)]'});
assert.deepEqual(expected, result);
result = jsonpath({json, path: '$..book[-1:]'});
assert.deepEqual(expected, result);
});
it('range of property of entire tree', () => {
const books = json.store.book;
const expected = [books[0], books[1]];
let result = jsonpath({json, path: '$..book[0,1]'});
assert.deepEqual(expected, result);
result = jsonpath({json, path: '$..book[:2]'});
assert.deepEqual(expected, result);
});
it('range of property of entire tree w/ single element result', () => {
const book = json.store.book[0];
const input = {books: [book]};
const expected = [book];
let result = jsonpath({json: input, path: '$.books[0,1]', wrap: false});
assert.deepEqual(expected, result);
result = jsonpath({json: input, path: '$.books[:1]', wrap: false});
assert.deepEqual(expected, result);
});
it('categories and authors of all books', () => {
const expected = ['reference', 'Nigel Rees'];
const result = jsonpath({json, path: '$..book[0][category,author]'});
assert.deepEqual(expected, result);
});
it('filter all properties if sub property exists, of entire tree', () => {
const books = json.store.book;
const expected = [books[2], books[3]];
const result = jsonpath({json, path: '$..book[?(@.isbn)]'});
assert.deepEqual(expected, result);
});
it('filter all properties if sub property exists, of single element array', () => {
const book = json.store.book[3];
const input = {books: [book]};
const expected = [book];
const result = jsonpath({json: input, path: '$.books[?(@.isbn)]', wrap: false});
assert.deepEqual(expected, result);
});
it('filter all properties if sub property greater than of entire tree', () => {
const books = json.store.book;
const expected = [books[0], books[2]];
const result = jsonpath({json, path: '$..book[?(@.price<10)]'});
assert.deepEqual(expected, result);
});
it('@ as a scalar value', () => {
const expected = [json.store.bicycle.price].concat(json.store.book.slice(1).map(function (book) {
return book.price;
}));
const result = jsonpath({json, path: "$..*[?(@property === 'price' && @ !== 8.95)]", wrap: false});
assert.deepEqual(expected, result);
});
it('all properties of a JSON structure (beneath the root)', () => {
const expected = [
json.store,
json.store.book,
json.store.bicycle
];
json.store.book.forEach((book) => {
expected.push(book);
});
json.store.book.forEach(function (book) {
Object.keys(book).forEach(function (p) {
expected.push(book[p]);
});
});
expected.push(json.store.bicycle.color);
expected.push(json.store.bicycle.price);
const result = jsonpath({json, path: '$..*'});
assert.deepEqual(expected, result);
});
it('all parent components of a JSON structure', () => {
const expected = [
json,
json.store,
json.store.book
];
json.store.book.forEach((book) => {
expected.push(book);
});
expected.push(json.store.bicycle);
const result = jsonpath({json, path: '$..'});
assert.deepEqual(expected, result);
});
it('root', () => {
const expected = json;
const result = jsonpath({json, path: '$', wrap: false});
assert.deepEqual(expected, result);
});
it('Custom operator: parent (caret)', () => {
const expected = [json.store, json.store.book];
const result = jsonpath({json, path: '$..[?(@.price>19)]^'});
assert.deepEqual(expected, result);
});
it('Custom operator: property name (tilde)', () => {
const expected = ['book', 'bicycle'];
const result = jsonpath({json, path: '$.store.*~'});
assert.deepEqual(expected, result);
});
it('Custom property @path', () => {
const expected = json.store.book.slice(1);
const result = jsonpath({json, path: '$.store.book[?(@path !== "$[\'store\'][\'book\'][0]")]'});
assert.deepEqual(expected, result);
});
it('Custom property: @parent', () => {
const expected = ['reference', 'fiction', 'fiction', 'fiction'];
const result = jsonpath({json, path: '$..book[?(@parent.bicycle && @parent.bicycle.color === "red")].category'});
assert.deepEqual(expected, result);
});
it('Custom property: @property', () => {
let expected = json.store.book.reduce(function (arr, book) {
arr.push(book.author, book.title);
if (book.isbn) { arr.push(book.isbn); }
arr.push(book.price);
return arr;
}, []);
let result = jsonpath({json, path: '$..book.*[?(@property !== "category")]'});
assert.deepEqual(expected, result);
expected = json.store.book.slice(1);
result = jsonpath({json, path: '$..book[?(@property !== 0)]'});
assert.deepEqual(expected, result);
});
it('Custom property: @parentProperty', () => {
let expected = [json.store.bicycle.color, json.store.bicycle.price];
let result = jsonpath({json, path: '$.store.*[?(@parentProperty !== "book")]'});
assert.deepEqual(expected, result);
expected = json.store.book.slice(1).reduce(function (rslt, book) {
return rslt.concat(Object.keys(book).reduce(function (reslt, prop) {
reslt.push(book[prop]);
return reslt;
}, []));
}, []);
result = jsonpath({json, path: '$..book.*[?(@parentProperty !== 0)]'});
assert.deepEqual(expected, result);
});
it('Custom property: @root', () => {
const expected = [json.store.book[2]];
const result = jsonpath({json, path: '$..book[?(@.price === @root.store.book[2].price)]'});
assert.deepEqual(expected, result);
});
it('@number()', () => {
const expected = [8.95, 12.99, 8.99, 22.99];
const result = jsonpath({json, path: '$.store.book..*@number()', flatten: true});
assert.deepEqual(expected, result);
});
});
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