why-jay · June 26, 2015 04:06 · Jun 26, 2015
diff --git a/Error message b/Error message
@@ -0,0 +1,4 @@
+Using Jest CLI v0.4.13
+ FAIL  __tests__/foo-test.js (0.896s)
+● foo() › it should throw
+  - Expected function to throw an exception.
diff --git a/Versions b/Versions
@@ -0,0 +1,5 @@
+node v0.12.2
+npm v2.11.2
+
+babel-jest v5.3.0
+jest-cli v0.4.13
diff --git a/foo-test.js b/foo-test.js
@@ -0,0 +1,11 @@
+// __tests__/foo-test.js
+
+import foo from '../src/foo.js';
+
+describe('foo()', () => {
+  it('should throw', () => {
+    expect(() => {
+      foo();
+    }).toThrow();
+  });
+});
diff --git a/foo.js b/foo.js
@@ -0,0 +1,5 @@
+// src/foo.js
+
+export default function foo() {
+  throw new Error();
+}
diff --git a/package.json b/package.json
@@ -0,0 +1,15 @@
+{
+  "devDependencies": {
+    "babel-jest": "*",
+    "jest-cli": "*"
+  },
+  "scripts": {
+    "test": "jest"
+  },
+  "jest": {
+    "scriptPreprocessor": "<rootDir>/node_modules/babel-jest",
+    "testFileExtensions": ["es6", "js"],
+    "moduleFileExtensions": ["js", "json", "es6"],
+    "unmockedModulePathPatterns": ["lodash"]
+  }
+}
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