From 1983ad1832e86f01d46810096793f1f43e1038e9 Mon Sep 17 00:00:00 2001
From: Alcedo Nathaniel De Guzman Jr <natealcedo@gmail.com>
Date: Fri, 1 Mar 2019 16:30:30 +0800
Subject: [PATCH] Update contributing to add information about jest_circus
 (#8013)

---
 CHANGELOG.md    | 1 +
 CONTRIBUTING.md | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7eec7d3110d3..18b0b770a7bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -72,6 +72,7 @@
 - `[@jest/fake-timers]`: Extract FakeTimers class from `jest-util` into a new separate package ([#7987](https://github.com/facebook/jest/pull/7987))
 - `[jest-repl]`: Migrate to TypeScript ([#8000](https://github.com/facebook/jest/pull/8000))
 - `[jest-validate]`: Migrate to TypeScript ([#7991](https://github.com/facebook/jest/pull/7991))
+- `[docs]`: Update CONTRIBUTING.md to add information about running jest with `jest-circus` locally ([#8013](https://github.com/facebook/jest/pull/8013)).
 
 ### Performance
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c09425c85741..3848b49ff0bc 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -107,6 +107,14 @@ Time:        0.232s, estimated 1s
 Ran all test suites.
 ```
 
+##### Using jest-circus
+
+There may be cases where you want to run jest using `jest-circus` instead of `jest-jasmine2` (which is the default runner) for integration testing. In situtations like this just set the environment variable `JEST_CIRCUS` to 1. That will configure jest to use `jest-circus`. So something like this.
+
+```bash
+JEST_CIRCUS=1 yarn jest
+```
+
 #### Additional Workflow for any changes made to website or docs
 
 If you are making changes to the website or documentation, test the website folder and run the server to check if your changes are being displayed accurately.