multiple mocha tests fail if run together in Visual Studio

问题

I'm brand new to trying to create unit tests but this seems pretty basic and I can't figure out why it is giving me errors. I have a node.js project in Visual Studio. If add one mocha test file as shown below everything works fine:

// file: UnitTest.js
var assert = require('assert');

describe('Test Suite 1', function () {
    it('Test 1', function () {
        assert.ok(true, "This shouldn't fail");
    });
});

describe('Test Suite 7', function () {
    it('Test 7', function () {
        assert.ok(true, "This shouldn't fail");
    });
});

If I click "Run All" in the Test Explorer in Visual Studio the tests execute successfully and all get green check marks. Now, I add another test file named test.js as shown below.

// file: test.js
var assert = require('assert');

describe('test3: 1', function () {
    it('test3: 1', function () {
        assert.ok(true, "This shouldn't fail");
    });
});

This is just another simple test that should succeed. However, when I add that test I now get errors on one of the tests in the UnitTest.js file. Here is what I get:

tests\UnitTest.js (2)        --->red X
  Test Suite 1 Test 1 (1)    --->green check 
    Test Suite 1 Test 1      --->green check
  Test Suite 7 test 7 (1)    --->red X
tests\test.js (1)            --->green check
  test3: 1 test3: 1 (1)      --->green check

I can;t fiure out why it fails when I add another test. If I highlight the top level test and click Copy All and paste it to an editor to look for errors I get this:

Group Name: MyApp
Group By: Hierarchy
Group Full Name: MyApp
Duration: 0:00:00.0339074
1 test(s) failed
0 test(s) skipped
2 test(s) passed

Result1 Name:   Test Suite 7 Test 7
Result1 Outcome:    Failed
Result1 Duration:   0:00:00
Result1 StackTrace:
Result1 Message:
Result1 StandardOutput:
Result1 StandardError:

Result2 Name:   Test Suite 1 Test 1
Result2 Outcome:    Passed
Result2 Duration:   0:00:00.000998
Result2 StackTrace:
Result2 Message:
Result2 StandardOutput: 
Using default Mocha settings
1..2
ok 1 Test Suite 1 Test 1
Result2 StandardError:

Result3 Name:   test3: 1 test3: 1
Result3 Outcome:    Passed
Result3 Duration:   0:00:00.0329094
Result3 StackTrace:
Result3 Message:
Result3 StandardOutput: 
Using default Mocha settings
1..1
ok 1 test3: 1 test3: 1
Result3 StandardError:

What in the heck is going on here? the only thing I notice is that the test that failed has no "Using default Mocha settings" but not sure that really means anything. Maybe it's not there because it failed.

来源：https://stackoverflow.com/questions/60290163/multiple-mocha-tests-fail-if-run-together-in-visual-studio

标签

visual-studio

mocha.js