AssertJ Snapshot

This library extends AssertJ with snapshot assertions. Inspired by the same feature in Jest.

Examples

There are running examples in the repository.

Assertions are made available by importing:

import static org.assertj.snapshot.api.Assertions.assertThat;

A snapshot can be recorded to a file, like this:

assertThat(anyObject)
 .matchesSnapshot();

First time this code is run, a snapshot file will be created. Any future runs will verify against that snapshot.

A snapshot can also be recorded inline, in the test case:

assertThat(anyObject)
 .matchesInlineSnapshot();

When this is run, it will manipulate the test case and change it like this:

assertThat(anyObject)
 .matchesInlineSnapshot("""
  {
   "someAttr1" : "abc",
   "someAttr2" : 123
  }
 """);

Any future runs will verify against that snapshot.