How to use prevall method in Cypress

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G.prevAll.test.js

Source: G.prevAll.test.js Github

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1const $ = require('../index');
2const config = require('./config');
3const jc1 = require('./code/simple1');
4const jc2 = require('./code/simple2');
5const hc1 = require('./code/simple1.html');
6test('$.prevAll: simple code', () => {
7    expect(()=>{
8       const G = $('var a = 1;');
9       G.prevAll();
10    }).not.toThrow();
11})
12test('$.prevAll: this[0] is null', () => {
13    expect(()=>{
14       const G = $('var a = 1;');
15       G[0] = null
16       G.prevAll();
17    }).not.toThrow();
18})
19test('$.prevAll: simple code 2', () => {
20    expect(() => {
21        const code = `
22        function test(){
23            let a = 1;
24            let b = 2;
25        }
26        test();
27        `
28        const G = $(code)
29        const ss = G.prevAll()
30    }).not.toThrow()
31})
32
33
34test('$.prevAll: simple code 3', () => {
35    expect(() => {
36        const code = `
37        let obj = { a: 1, b: 2 };
38        let c = obj.a + obj.b;
39        `
40        const G = $(code)
41        const ss = G.prevAll()
42    }).not.toThrow()
43})
44test('$.prevAll: simple code 4', () => {
45    expect(() => {
46        const code = `
47        function parent(){
48            function eat(){
49                console.log('do eat');
50            }
51            let name = 'jerry';
52        }
53        parent();
54        `
55        const G = $(code).find('let $_$ = \'$_$\'');
56        const ss = G.prevAll()
57    }).not.toThrow()
58})
59test('$.prevAll: simple code 4', () => {
60    const code = `
61    function parent(){
62        function eat(){
63            console.log('do eat');
64        }
65        let name = 'jerry';
66    }
67    parent();
68    `
69    const G = $(code).find('let $_$ = \'$_$\'');
70    const result = G.prevAll().generate()
71    const compareCode = $(`function eat(){
72    console.log('do eat');
73}`).generate();
74    expect(result).toBe(compareCode);
75})
76test('$.prevAll: simple2 code result should be ok', () => {
77    const G = $(jc2).find(`this.updater.digest({ list, total })`);
78    const result = G.prevAll().generate()
79    const compareCode = $(`const params = { name: '1' };`).generate();
80    expect(result).toBe(compareCode);
81})
82test('$.prevAll: simple html code', () => {
83    const code = `<div>test</div>`;
84    expect(() => {
85        const G = $(code, config.html);
86        G.prevAll();
87    }).not.toThrow();
88})
89test('$.prevAll: simple html code', () => {
90    const code = `<div>
91    <a href="xxx">is a link</a>
92    <span>test</span>
93    </div>`;
94    expect(() => {
95        const G = $(code, config.html).find('<span>$_$</span>');
96        G.prevAll();
97    }).not.toThrow();
98})
99test('$.prevAll: simple html code result should be ok', () => {
100    const code = `<div>
101    <a href="xxx">is a link</a>
102    <span>test</span>
103    </div>`;
104    const G = $(code, config.html).find('<span>$_$</span>');
105    const result = G.prevAll().generate();
106    expect(result).toBe(`\n    `);
107})
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