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Gathering detailed insights and metrics for wait-for-expect

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Gathering detailed insights and metrics for wait-for-expect

wait-for-expect

Wait for expectation to be true, useful for integration and end to end testing. Integral part of react-testing-library.

3.0.2

294

MIT

TypeScript

585.00 B

257,929,619 2.4

Installations

npm install wait-for-expect

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Node Version

8.10.0

NPM Version

6.4.1 Score

99.4

Supply Chain

100

Quality

76.1

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

4

Total

23

Closed

2

Merged

17

Issues

Open

8

Total

16

Closed

8

Releases

v3.0.2

Published on 06 Feb 2020

v3.0.1

Published on 25 Oct 2019

v3.0.0

Published on 24 Sept 2019

v2.0.0

Published on 20 Aug 2019

v1.3.0

Published on 09 Aug 2019

v1.2.0

Published on 16 May 2019

View all 8 releases

Contributors

Unable to fetch Contributors

View all 19 contributors

Languages

TypeScript

TypeScript (100%)

Developer

TheBrainFamily

Download Statistics

Total Downloads

257,929,619

Last Day

15,817

Last Week

528,665

Last Month

2,253,097

Last Year

30,674,490

GitHub Statistics

294 Stars

52 Commits

31 Forks

3 Watching

3 Branches

19 Contributors

Bundle Size

1.22 kB

Minified

585.00 B

Minified + Gzipped

Bundlephobia

Maintainers

Package Meta Information

Latest Version

3.0.2

Package Id

wait-for-expect@3.0.2

Size

9.15 kB

NPM Version

6.4.1

Node Version

8.10.0

Publised On

06 Feb 2020

Total Downloads

Cumulative downloads

Total Downloads

257,929,619

Last day

-13.1%

15,817

Compared to previous day

Last week

-5.9%

528,665

Compared to previous week

Last month

-12%

2,253,097

Compared to previous month

Last year

-22.9%

30,674,490

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Versions

wait-for-expect

Wait for expectation to be true, useful for integration and end to end testing

Think things like calling external APIs, database operations, or even GraphQL subscriptions. We will add examples for all of them soon, for now please enjoy the simple docs. :-)

Usage:

1const waitForExpect = require("wait-for-expect")
2
3test("it waits for the number to change", async () => {
4  let numberToChange = 10;
5  // we are using random timeout here to simulate a real-time example
6  // of an async operation calling a callback at a non-deterministic time
7  const randomTimeout = Math.floor(Math.random() * 300);
8
9  setTimeout(() => {
10    numberToChange = 100;
11  }, randomTimeout);
12
13  await waitForExpect(() => {
14    expect(numberToChange).toEqual(100);
15  });
16});

instead of:

1
2test("it waits for the number to change", () => {
3  let numberToChange = 10;
4  const randomTimeout = Math.floor(Math.random() * 300);
5
6  setTimeout(() => {
7    numberToChange = 100;
8  }, randomTimeout);
9  
10  setTimeout(() => {
11    expect(numberToChange).toEqual(100);
12  }, 700);
13});

It will check whether the expectation passes right away in the next available "tick" (very useful with, for example, integration testing of react when mocking fetches, like here: https://github.com/kentcdodds/react-testing-library#usage).

If it doesn't, it will keep repeating for the duration of, at most, the specified timeout, every 50 ms. The default timeout is 4.5 seconds to fit below the default 5 seconds that Jest waits for before throwing an error.

Nice thing about this simple tool is that if the expectation keeps failing till the timeout, it will check it one last time, but this time the same way your test runner would run it - so you basically get your expectation library error, the sam way like if you used setTimeout to wait but didn't wait long enough.

To show an example - if I change the expectation to wait for 105 in above code, you will get nice and familiar:


 FAIL  src/waitForExpect.spec.js (5.042s)
  ✕ it waits for the number to change (4511ms)

  ● it waits for the number to change

    expect(received).toEqual(expected)
    
    Expected value to equal:
      105
    Received:
      100

       9 |   }, 600);
      10 |   await waitForExpect(() => {
    > 11 |     expect(numberToChange).toEqual(105);
      12 |   });
      13 | });
      14 | 
      
      at waitForExpect (src/waitForExpect.spec.js:11:28)
      at waitUntil.catch (src/index.js:61:5)

Test Suites: 1 failed, 1 total
Tests:       1 failed, 1 total
Snapshots:   0 total
Time:        5.807s

You can add multiple expectations to wait for, all of them have to pass, and if one of them don't, it will be marked. For example, let's add another expectation for a different number, notice how jest tells you that that's the expectation that failed.

    expect(received).toEqual(expected)
    
    Expected value to equal:
      110
    Received:
      105

      11 |   await waitForExpect(() => {
      12 |     expect(numberToChange).toEqual(100);
    > 13 |     expect(numberThatWontChange).toEqual(110);
      14 |   });
      15 | });
      16 | 
      
      at waitForExpect (src/waitForExpect.spec.js:13:34)
      at waitUntil.catch (src/index.js:61:5)

Since 0.6.0 we can now work with promises, for example, this is now possible:

1test("rename todo by typing", async () => {
2  // (..)
3  const todoToChange = getTodoByText("original todo");
4  todoToChange.value = "different text now";
5  Simulate.change(todoToChange);
6
7  await waitForExpect(() =>
8    expect(
9      todoItemsCollection.findOne({
10        text: "different text now"
11      })).resolves.not.toBeNull()
12  );
13});

Async Await also works, as in this example - straight from our test case

1test("it works with promises", async () => {
2  let numberToChange = 10;
3  const randomTimeout = Math.floor(Math.random() * 300);
4
5  setTimeout(() => {
6    numberToChange = 100;
7  }, randomTimeout);
8
9  const sleep = (ms) =>
10    new Promise(resolve => setTimeout(() => resolve(), ms));
11
12  await waitForExpect(async () => {
13    await sleep(10);
14    expect(numberToChange).toEqual(100);
15  });
16});

(Note: Obviously, in this case it doesn't make sense to put the await sleep there, this is just for demonstration purpose)

API

waitForExpect takes 3 arguments, 2 optional.

1/**
2 * Waits for predicate to not throw and returns a Promise
3 *
4 * @param  expectation  Function  Predicate that has to complete without throwing
5 * @param  timeout  Number  Maximum wait interval, 4500ms by default
6 * @param  interval  Number  Wait interval, 50ms by default
7 * @return  Promise  Promise to return a callback result
8 */

The defaults for timeout and interval can also be edited globally, e.g. in a jest setup file:

1import waitForExpect from 'wait-for-expect';
2
3waitForExpect.defaults.timeout = 2000;
4waitForExpect.defaults.interval = 10;

Changelog

1.0.0 - 15 June 2018

( For most people this change doesn't matter. ) Export the function directly in module.exports instead of exporting as an object that has default key. If that's not clear (...it isn't ;-) ) - check #8 #9 . Thanks to @mbaranovski for the PR and @BenBrostoff for creating the issue! I'm making this 1.0.0 as this is breaking for people that currently did:

1const { default: waitFor } = require('wait-for-expect');

0.6.0 - 3 May 2018

Work with promises.

0.5.0 - 10 April 2018

Play nicely with jest fake timers (and also in any test tool that overwrites setTimeout) - thanks to @slightlytyler and @kentcoddods for helping to get this resolved.

Credit

Originally based on ideas from https://github.com/devlato/waitUntil. Simplified highly and rewritten for 0.1.0 version. Simplified even more and rewritten even more for 0.2.0 with guidance from Kent C. Dodds: https://github.com/kentcdodds/react-testing-library/pull/25

No vulnerabilities found.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

10

License

Determines if the project has defined a license.

5

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Maintained

Determines if the project is "actively maintained".

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

SAST

Determines if the project uses static code analysis.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Reason

103 existing vulnerabilities detected

Details

Warn: Project is vulnerable to: GHSA-67hx-6x53-jw92
Warn: Project is vulnerable to: GHSA-6chw-6frg-f759
Warn: Project is vulnerable to: GHSA-v88g-cgmw-v5xw
Warn: Project is vulnerable to: GHSA-93q8-gq69-wqmw
Warn: Project is vulnerable to: GHSA-fwr7-v2mv-hh25
Warn: Project is vulnerable to: GHSA-2mj8-pj3j-h362
Warn: Project is vulnerable to: GHSA-gqf6-75v8-vr26
Warn: Project is vulnerable to: GHSA-v45m-2wcp-gg98
Warn: Project is vulnerable to: GHSA-cwfw-4gq5-mrqx
Warn: Project is vulnerable to: GHSA-g95f-p29q-9xw4
Warn: Project is vulnerable to: GHSA-grv7-fg5c-xmjg
Warn: Project is vulnerable to: GHSA-c6rq-rjc2-86v2
Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
Warn: Project is vulnerable to: GHSA-rq8g-5pc5-wrhr
Warn: Project is vulnerable to: GHSA-9vvw-cc9w-f27h
Warn: Project is vulnerable to: GHSA-gxpj-cx7g-858c
Warn: Project is vulnerable to: GHSA-w573-4hg7-7wgq
Warn: Project is vulnerable to: GHSA-hr2v-3952-633q
Warn: Project is vulnerable to: GHSA-ff7x-qrg7-qggm
Warn: Project is vulnerable to: GHSA-qrmc-fj45-qfc2
Warn: Project is vulnerable to: GHSA-8r6j-v8pm-fqw3
Warn: Project is vulnerable to: MAL-2023-462
Warn: Project is vulnerable to: GHSA-xf7w-r453-m56c
Warn: Project is vulnerable to: GHSA-ww39-953v-wcq6
Warn: Project is vulnerable to: GHSA-pfrx-2q88-qq97
Warn: Project is vulnerable to: GHSA-q42p-pg8m-cqh6
Warn: Project is vulnerable to: GHSA-w457-6q6x-cgp9
Warn: Project is vulnerable to: GHSA-62gr-4qp9-h98f
Warn: Project is vulnerable to: GHSA-f52g-6jhx-586p
Warn: Project is vulnerable to: GHSA-2cf5-4w76-r9qv
Warn: Project is vulnerable to: GHSA-3cqr-58rm-57f8
Warn: Project is vulnerable to: GHSA-g9r4-xpmj-mj65
Warn: Project is vulnerable to: GHSA-q2c6-c6pm-g3gh
Warn: Project is vulnerable to: GHSA-765h-qjxv-5f44
Warn: Project is vulnerable to: GHSA-f2jv-r9rf-7988
Warn: Project is vulnerable to: GHSA-44pw-h2cw-w3vq
Warn: Project is vulnerable to: GHSA-jp4x-w63m-7wgm
Warn: Project is vulnerable to: GHSA-c429-5p7v-vgjp
Warn: Project is vulnerable to: GHSA-43f8-2h32-f4cj
Warn: Project is vulnerable to: GHSA-rc47-6667-2j5j
Warn: Project is vulnerable to: GHSA-pc5p-h8pf-mvwp
Warn: Project is vulnerable to: GHSA-qqgx-2p2h-9c37
Warn: Project is vulnerable to: GHSA-78xj-cgh5-2h22
Warn: Project is vulnerable to: GHSA-2p57-rm9w-gvfp
Warn: Project is vulnerable to: GHSA-2pr6-76vf-7546
Warn: Project is vulnerable to: GHSA-8j8c-7jfh-h6hx
Warn: Project is vulnerable to: GHSA-896r-f27r-55mw
Warn: Project is vulnerable to: GHSA-9c47-m6qq-7p4h
Warn: Project is vulnerable to: GHSA-6c8f-qphg-qjgp
Warn: Project is vulnerable to: GHSA-p6mc-m468-83gw
Warn: Project is vulnerable to: GHSA-29mw-wpgm-hmr9
Warn: Project is vulnerable to: GHSA-35jh-r3h4-6jhm
Warn: Project is vulnerable to: GHSA-4xc9-xhrj-v574
Warn: Project is vulnerable to: GHSA-x5rq-j2xg-h7qm
Warn: Project is vulnerable to: GHSA-jf85-cpcp-j695
Warn: Project is vulnerable to: GHSA-xf5p-87ch-gxw2
Warn: Project is vulnerable to: GHSA-ch52-vgq2-943f
Warn: Project is vulnerable to: GHSA-5v2h-r2cx-5xgj
Warn: Project is vulnerable to: GHSA-rrrm-qjm4-v8hf
Warn: Project is vulnerable to: GHSA-4xcv-9jjx-gfj3
Warn: Project is vulnerable to: GHSA-f9cm-qmx5-m98h
Warn: Project is vulnerable to: GHSA-7wpw-2hjm-89gp
Warn: Project is vulnerable to: GHSA-952p-6rrq-rcjv
Warn: Project is vulnerable to: GHSA-f8q6-p94x-37v3
Warn: Project is vulnerable to: GHSA-vh95-rmgr-6w4m / GHSA-xvch-5gv4-984h
Warn: Project is vulnerable to: GHSA-fhjf-83wg-r2j9
Warn: Project is vulnerable to: GHSA-w7rc-rwvf-8q5r
Warn: Project is vulnerable to: GHSA-r683-j2x4-v87g
Warn: Project is vulnerable to: GHSA-5fw9-fq32-wv5p
Warn: Project is vulnerable to: GHSA-m6cx-g6qm-p2cx
Warn: Project is vulnerable to: GHSA-x8qc-rrcw-4r46
Warn: Project is vulnerable to: GHSA-4328-8hgf-7wjr
Warn: Project is vulnerable to: GHSA-93f3-23rq-pjfp
Warn: Project is vulnerable to: GHSA-jmqm-f2gx-4fjv
Warn: Project is vulnerable to: GHSA-pw54-mh39-w3hc / GHSA-xgh6-85xh-479p
Warn: Project is vulnerable to: GHSA-hj48-42vr-x3v9
Warn: Project is vulnerable to: GHSA-hrpp-h998-j3pp
Warn: Project is vulnerable to: GHSA-6g33-f262-xjp4
Warn: Project is vulnerable to: GHSA-p8p7-x288-28g6
Warn: Project is vulnerable to: GHSA-r2j6-p67h-q639
Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw
Warn: Project is vulnerable to: GHSA-44c6-4v22-4mhx
Warn: Project is vulnerable to: GHSA-4x5v-gmq8-25ch
Warn: Project is vulnerable to: GHSA-4g88-fppr-53pp
Warn: Project is vulnerable to: GHSA-4jqc-8m5r-9rpr
Warn: Project is vulnerable to: GHSA-2m39-62fm-q8r3
Warn: Project is vulnerable to: GHSA-vx3p-948g-6vhq
Warn: Project is vulnerable to: GHSA-mf6x-7mm4-x2g7
Warn: Project is vulnerable to: GHSA-j44m-qm6p-hp7m
Warn: Project is vulnerable to: GHSA-3jfq-g458-7qm9
Warn: Project is vulnerable to: GHSA-5955-9wpr-37jh
Warn: Project is vulnerable to: GHSA-f5x3-32g6-xq36
Warn: Project is vulnerable to: GHSA-r628-mhmh-qjhw
Warn: Project is vulnerable to: GHSA-9r2w-394v-53qc
Warn: Project is vulnerable to: GHSA-qq89-hq3f-393p
Warn: Project is vulnerable to: GHSA-jgrx-mgxx-jf9v
Warn: Project is vulnerable to: GHSA-g7q5-pjjr-gqvp
Warn: Project is vulnerable to: GHSA-72xf-g2v4-qvf3
Warn: Project is vulnerable to: GHSA-7p7h-4mm5-852v
Warn: Project is vulnerable to: GHSA-38fc-wpqx-33j7
Warn: Project is vulnerable to: GHSA-3h5v-q93c-6h6q
Warn: Project is vulnerable to: GHSA-c4w7-xm78-47vh
Warn: Project is vulnerable to: GHSA-p9pc-299p-vxgp

Score

2.4

/10

Last Scanned on 2024-12-16

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

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Other packages similar to wait-for-expect

Other packages similar to wait-for-expect

wait-for-expect

Installations

Developer Guide

No

CommonJS

8.10.0

6.4.1

Score

Pull Requests

4

23

2

17

Issues

8

16

8

Releases

Contributors

Unable to fetch Contributors

Languages

Developer

TheBrainFamily

Download Statistics

GitHub Statistics

Bundle Size

1.22 kB

585.00 B

Maintainers

Package Meta Information

Total Downloads

257,929,619

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

wait-for-expect

Usage:

API

Changelog

Credit

10

10

5

0

0

0

0

0

0

0

2.4

/10