Jest + jasmine silently ignores

output.txt

$: npm test

> tmp@1.0.0 test /tmp
> jest

Using Jest CLI v0.9.2, jasmine2
 PASS  __tests__/test.js (0.037s)
1 test passed (1 total in 1 test suite, run time 0.795s)

test.js

var someCriticalFunction = function() {
	throw 'up';
};

describe('test 1', () => {
	it('is true', () => {
		expect(true).toBe(true);
	})
});

describe('test 2', () => {
	it('is ignored?', () => {
		someCriticalFunction();
		expect(true).toBe(false);
	})
});