Partial Matcher for Jest Expect
jest-partial asserts that the
provided object is a subset of the
expected. We don't always want to verify the entire object that has been given. We often just
want to protect the properties that we need, and ignore everything else.
npm install --save-dev jest-partial
yarn add -D jest-partial
jest-partial to your Jest
setupFilesAfterEnv configuration. See for help
If you are already using another test framework, like jest-chain, then you should create a test setup file and
require each of the frameworks you are using.
Then in your Jest config:
If your editor does not recognise the custom
jest-partial matchers, add a
global.d.ts file to your project with:
The examples below use the following data object:
const kitchen =version: '1'floor:material: 'wood'color: 'walnut'drawers:contents:type: 'spoon' count: 4type: 'fork' count: 2;
case: Our kitchen has multiple drawers, and we just want to know that there is at least one drawer that contains spoons.
case: Our kitchen has multiple drawers, and we want to know that there is a drawer that holds 2 forks.
case: Our kitchen has multiple drawers, and we want to know that there is a drawer that holds forks and spoons.
Thanks goes to these wonderful people (emoji key):
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This project follows the all-contributors specification. Contributions of any kind welcome!