mocha-chai-snapshot
Hook for chai to generate and matche snapshot in testing node application just like in jest
Getting Started
Install mocha-chai-snapshot using npm
:
npm install --save-dev mocha-chai-snapshot
Example Useage
// first.spec.js => The first file test-runner executes or add these below lines at the top of every spec fileconst chai = ;const chaiSnapshot = ;const expect = chai;chai; //component.spec.js;
It will automatically create(if CHAI_SNAPSHOT_UPDATE
environment variable to true
) __snapshots__
folder in same folder of specs and snapshot file like below
exports`GET /hello : Should say Hello to Starnger 1` = "Hello, stranger!";exports`GET /hello : Should say Hello to Jhon 1` = "name": "Jhon" "say": "Hello";
If the found snapshot does not match with the actuals and you want to update the related snapshots, use isForced
in expect
chain.
Example Useage
// first.spec.js => The first file testrunner executes or add these below lines at the top of every spec fileconst chaiSnapshot =; chai; //component.spec.js;
Or
Set CHAI_SNAPSHOT_UPDATE = true
to update the snapshots if there is any mismatch in any of the spec files even if isForced
is not used.
Warning!: Do not set CHAI_SNAPSHOT_UPDATE = true
in build pipeline. If it is set, build will never fail even if there is no snapshots available in the __snapshots__
folder.
Notes: It is tested in mocha v5.2.0
and chai v4.2.0
.