Changelog and documentation for PR #5503 (Custom asymmetric matchers) (…

…#5784) * test * define asymmetric matchers * more * correction * trying to fix flow * flow fix * Changelog * add example in documentation
jestjs · Mar 12, 2018 · 9cb1a5c · 9cb1a5c
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -16,6 +16,8 @@
   ([#5670](https://github.com/facebook/jest/pull/5670))
 * `[expect]` Add inverse matchers (`expect.not.arrayContaining`, etc.,
   [#5517](https://github.com/facebook/jest/pull/5517))
+* `[expect]` `expect.extend` now also extends asymmetric matchers
+  ([#5503](https://github.com/facebook/jest/pull/5503))
 * `[jest-mock]` Update `spyOnProperty` to support spying on the prototype chain
   ([#5753](https://github.com/facebook/jest/pull/5753))
 * `[jest-mock]` Add tracking of return values in the `mock` property

diff --git a/docs/ExpectAPI.md b/docs/ExpectAPI.md
@@ -68,6 +68,10 @@ expect.extend({
 test('even and odd numbers', () => {
   expect(100).toBeDivisibleBy(2);
   expect(101).not.toBeDivisibleBy(2);
+  expect({apples: 6, bananas: 3}).toEqual({
+    apples: expect.toBeDivisibleBy(2),
+    bananas: expect.not.toBeDivisibleBy(2),
+  });
 });
 ```