From 8084a326f0ecaa2d1848a42ae1306767b39533ab Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Fri, 5 Aug 2016 18:39:50 +0100
Subject: [PATCH] Tweak Jest default settings (#378)
Disable timer mocking and enable verbose output.
---
config/jest/environment.js | 7 +++++++
scripts/eject.js | 1 +
scripts/utils/createJestConfig.js | 4 +++-
3 files changed, 11 insertions(+), 1 deletion(-)
create mode 100644 config/jest/environment.js
diff --git a/config/jest/environment.js b/config/jest/environment.js
new file mode 100644
index 000000000..e7c1df906
--- /dev/null
+++ b/config/jest/environment.js
@@ -0,0 +1,7 @@
+// Currently, Jest mocks setTimeout() and similar functions by default:
+// https://facebook.github.io/jest/docs/timer-mocks.html
+// We think this is confusing, so we disable this feature.
+// If you see value in it, run `jest.useFakeTimers()` in individual tests.
+beforeEach(() => {
+ jest.useRealTimers();
+});
diff --git a/scripts/eject.js b/scripts/eject.js
index 82202d6ee..55661d192 100644
--- a/scripts/eject.js
+++ b/scripts/eject.js
@@ -41,6 +41,7 @@ prompt(
path.join('config', 'webpack.config.prod.js'),
path.join('config', 'jest', 'CSSStub.js'),
path.join('config', 'jest', 'FileStub.js'),
+ path.join('config', 'jest', 'environment.js'),
path.join('config', 'jest', 'transform.js'),
path.join('scripts', 'build.js'),
path.join('scripts', 'start.js'),
diff --git a/scripts/utils/createJestConfig.js b/scripts/utils/createJestConfig.js
index 282705f0d..d4ee867f4 100644
--- a/scripts/utils/createJestConfig.js
+++ b/scripts/utils/createJestConfig.js
@@ -19,7 +19,9 @@ module.exports = (resolve, rootDir) => {
setupFiles: [
resolve('config/polyfills.js')
],
- testEnvironment: 'node'
+ setupTestFrameworkScriptFile: resolve('config/jest/environment.js'),
+ testEnvironment: 'node',
+ verbose: true
};
if (rootDir) {
config.rootDir = rootDir;
--
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