Fix DependencyGraph-test in OS.

Reviewed By: davidaurelio

Differential Revision: D5113955

fbshipit-source-id: 892331815393ca314e84112551f516a20126068f

packager/src/node-haste/__tests__/DependencyGraph-test.js

@@ -22,11 +22,15 @@ jest
 // This doesn't have state, and it's huge (Babel) so it's much faster to
 // require it only once. The variable name is prefixed with "mock" as an escape-hatch
 // for babel-plugin-jest-hoist.
-const mockExtractDependencies = require('../../JSTransformer/worker/extract-dependencies');
-jest.mock(
- '../../JSTransformer/worker/extract-dependencies',
- () => mockExtractDependencies,
-);
+let mockExtractDependencies;
+jest.mock('../../JSTransformer/worker/extract-dependencies', () => {
+ if (!mockExtractDependencies) {
+ mockExtractDependencies = require.requireActual(
+ '../../JSTransformer/worker/extract-dependencies',
+ );
+ }
+ return mockExtractDependencies;
+});
 
 jasmine.DEFAULT_TIMEOUT_INTERVAL = 10000;
 
@@ -98,6 +102,11 @@ describe('DependencyGraph', function() {
  return new Promise(resolve => {
  let deps = {dependencies: [], dependencyOffsets: []};
  if (!module.path.endsWith('.json')) {
+ if (!mockExtractDependencies) {
+ mockExtractDependencies = require.requireActual(
+ '../../JSTransformer/worker/extract-dependencies',
+ );
+ }
  deps = mockExtractDependencies(sourceCode);
  }
  resolve({...deps, code: sourceCode});