mock process.argv in test

storybookjs · Jul 14, 2023 · 051dea3 · 051dea3
1 parent 7ec911f
commit 051dea3
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/util/getCliOptions.test.ts b/src/util/getCliOptions.test.ts
@@ -2,6 +2,12 @@ import { getCliOptions } from './getCliOptions';
 import * as cliHelper from './getParsedCliOptions';
 
 describe('getCliOptions', () => {
+  let originalArgv: string[] = process.argv;
+
+  afterEach(() => {
+    process.argv = originalArgv;
+  });
+
   it('returns custom options if passed', () => {
     const customConfig = { configDir: 'custom', indexJson: true };
     jest
@@ -13,6 +19,9 @@ describe('getCliOptions', () => {
 
   it('returns extra args if passed', () => {
     const extraArgs = ['TestName', 'AnotherTestName'];
+    // mock argv to avoid side effect from running tests e.g. jest --coverage,
+    // which would end up caught by getCliOptions
+    process.argv = [];
     jest.spyOn(cliHelper, 'getParsedCliOptions').mockReturnValueOnce({ options: {}, extraArgs });
     const opts = getCliOptions();
     expect(opts.jestOptions).toEqual(extraArgs);