jest-pdf-snapshot-thomaschaaf

=========================== CAUTION ===========================
All contents in this repository are still under development.
APIs are quite unstable and subject to change.
It is possible that there are many bugs in the implementation.
We assume the users are able to fix issues by theirselves in case of trouble.
(Any contribution is welcome)
===============================================================

jest-pdf-snapshot

jest-pdf-snapshot provides Jest matcher that performs pdf comparisons. It uses diff-pdf for pdf comparison/diff.

const { toMatchPdfSnapshot } = require('jest-pdf-snapshot');

expect.extend({ toMatchPdfSnapshot });

test('Snapshot matches', () => {
  const pdf = fs.readFileSync('../resources/test1.pdf');
  expect(pdf).toMatchPdfSnapshot();
});

Would give you following files:

├── resources/test1.pdf
└── __tests__
    ├── pdf_snapshots
    │   ├── __diff_output__
    |   |   └── pdf-snapshot-test-js-snapshot-is-different-1-diff.pdf
    |   |        (in case snapshot doesn't match)
    │   └── pdf-snapshot-test-js-snapshot-matches-1.pdf
    └── pdf-snapshot.test.js

If you want to play with working example, see our mock project in __tests__/mock_project, which we use for integration tests.

Installation

⚠️ Jest-pdf-snapshot depends on vslavik/diff-pdf. Please read diff-pdf's README.md to install it to your test environment.

After you've set up diff-pdf, you can install jest-pdf-snapshot just with:

npm install --save-dev jest-pdf-snapshot