How to specify test directory for mocha

Question

Mocha tries to find test files under test by default  how do I specify another dir  e g  server-test

User · Answer

If you are using nodejs  in your package json under scripts   For global  -g  installations   test    mocha server-test  or  test    mocha server-test      js  for subdocuments For project installations   test    node modules mocha bin mocha server-test  or  test    node modules mocha bin mocha server-test      js  for subdocuments   Then just run your tests normally as npm test

User · Answer

As  jeff-dickey suggested  in the root of your project  make a folder called test  In that folder  make a file called mocha opts  Now where I try to improve on Jeff s answer  what worked for me was instead of specifying the name of just one test folder  I specified a pattern to find all tests to run in my project by adding this line     tests   js --recursive in mocha opts  If you instead want to specify the exact folders to look for tests in  I did something like this   shared tests   js --recursive server tests graph   js --recursive   I hope this helps anyone who needed more than what the other answers provide

User · Answer

Don t use the -g or --grep option  that pattern operates on the name of the test inside of it    not the filesystem  The current documentation is misleading and or outright wrong concerning this  To limit the entire command to a portion of the filesystem  you can pass a pattern as the last argument  its not a flag    For example  this command will set your reporter to spec but will only test js files immediately inside of the server-test directory   mocha --reporter spec server-test   js   This command will do the same as above  plus it will only run the test cases where the it   string definition of a test begins with  Fnord     mocha --reporter spec --grep  Fnord   server-test   js

User · Answer

I am on Windows 7 using node js v0 10 0 and mocha v1 8 2 and npm v1 2 14  I was just trying to get mocha to use the path test unit to find my tests  After spending to long and trying several things I landed   Using the  test unit   js  option does not work on windows  For good reasons that windows shell doesn t expand wildcards like unixen   However using  test unit  does work  without the file pattern  eg   mocha test unit  runs all files found in test unit folder   This only still runs one folder files as tests but you can pass multiple directory names as parameters   Also to run a single test file you can specify the full path and filename  eg   mocha test unit mytest1 js   I actually setup in package json for npm       scripts              test    mocha test unit          So that  npm test  runs my unit tests

User · Answer

Now a days year 2020  you can handle this using mocha configuration file   Step 1  Create  mocharc js file at the root location of your application  Step 2  Add below code in mocha config file     use strict    module exports       spec   src app      test js       For More option in config file refer this link  https   github com mochajs mocha blob master example config  mocharc js

User · Answer

Edit   This option is deprecated   https   mochajs org  mochaopts    If you want to do it by still just running mocha on the command line  but wanted to run the tests in a folder   server-tests instead of   test  create a file at   test mocha opts with just this in the file   server-tests   If you wanted to run everything in that folder and subdirectories  put this into test mocha opts  server-tests --recursive   mocha opts are the arguments passed in via the command line  so making the first line just the directory you want to change the tests too will redirect from   test

User · Answer

Here s one way  if you have subfolders in your test folder e g    test  test server-test  test other-test   Then in linux you can use the find command to list all   js files recursively and pass it to mocha   mocha   find test -name    js

User · Answer

I had this problem just now and solved it by removing the --recursive option  which I had set  and using the same structure suggested above   mochify  test unit      js   This ran all tests in all directories under  test unit  for me while ignoring the other directories within  test

User · Answer

As mentioned by  superjos in comments use  mocha --recursive  some dir

User · Answer

The nice way to do this is to add a  test  npm script in package json that calls mocha with the right arguments   This way your package json also describes your test structure   It also avoids all these cross-platform issues in the other answers  double vs single quotes   find   etc      To have mocha run all js files in the  test  directory    scripts          start    node   bin www   -- not required for tests  just here for context      test    mocha test      js         Then to run only the smoke tests call   npm test   You can standardize the running of all tests in all projects this way  so when a new developer starts on your project or another  they know  npm test  will run the tests   There is good historical precedence for this  Maven  for example  most old school  make  projects too    It sure helps CI when all projects have the same test command   Similarly  you might have a subset of faster  smoke  tests that you might want mocha to run    scripts          test    mocha test      js       smoketest    mocha smoketest      js         Then to run only the smoke tests call   npm smoketest   Another common pattern is to place your tests in the same directory as the source that they test  but call the test files   spec js   For example  src foo foo js is tested by src foo foo spec js   To run all the tests named   spec js by convention      scripts          test    mocha      spec js         Then to run all the tests call   npm test   See the pattern here   Good       Consistency defeats mura

User · Answer

If in node js  some new configurations as of Mocha v6   Option 1  Create  mocharc json in project s root directory        spec    path to test files      Option 2  add mocha property in project s package json               mocha          spec    path to test files          More options are here

User · Answer

Use this   mocha server-test   Or if you have subdirectories use this   mocha  server-test      js    Note the use of double quotes  If you omit them you may not be able to run tests in subdirectories

User · Answer

Run all files in test directory including sub directories that match test js  find   parent test directory -name   test js    xargs mocha -R spec   or use the --recursive switch   mocha --recursive test directory

User · Answer

This doesn t seem to be any  easy  support for changing test directory  However  maybe you should take a look at this issue  relative to your question

[unit-testing] How to specify test directory for mocha?

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