a failing assertion will not produce a coverage report

[Deleted user]

Reference: failing assertion prevents coverage tool from running

(passing assertions will produce coverage with the right command switches)

Any help with this issue would be appreciated.

setup

./src/test.js

const zero = () => 0;
export { zero };

./test/test.spec.js

const assert = require('assert');
import { zero } from '../src/test';

describe('assert false', () => {
  it('should not crash isparta', done => {
    const result = zero();
    try {
      assert.strictEqual(result, 1);
      done();
    } catch (error) {
      done(error);
    }
  });
});

package.json

{
  "name": "test",
  "devDependencies": {
    "babel-core": ">=6.1.21",
    "babel-preset-es2015": ">=6.1.18",
    "isparta": ">=4.0.0",
    "mocha": ">=2.3.4"
  }
}

results

failing

$ ./node_modules/isparta/bin/isparta cover --root ./src ./node_modules/mocha/bin/_mocha -- ./test/test.spec.js --require babel-core/register  

  assert false
    1) should not crash isparta

  0 passing (40ms)
  1 failing

  1) assert false should not crash isparta:

      AssertionError: 0 === 1
      + expected - actual

      -0
      +1

      at Context.<anonymous> (test.spec.js:10:14)

failing with --include-all-sources

$ ./node_modules/isparta/bin/isparta cover --root ./src --include-all-sources ./node_modules/mocha/bin/_mocha -- ./test/test.spec.js --require babel-core/register  

  assert false
    1) should not crash isparta

  0 passing (29ms)
  1 failing

  1) assert false should not crash isparta:

      AssertionError: 0 === 1
      + expected - actual

      -0
      +1

      at Context.<anonymous> (test.spec.js:10:14)

passing

$ ./node_modules/isparta/bin/isparta cover --root ./src ./node_modules/mocha/bin/_mocha -- ./test/test.spec.js --require babel-core/register  

  assert false
    ✓ should not crash isparta

  1 passing (35ms)

No coverage information was collected, exit without writing coverage information

passing with --include-all-sources

$ ./node_modules/isparta/bin/isparta cover --root ./src --include-all-sources ./node_modules/mocha/bin/_mocha -- ./test/test.spec.js --require babel-core/register  

  assert false
    ✓ should not crash isparta

  1 passing (20ms)

================================================================================
Writing coverage object [./coverage/coverage.json]
Writing coverage reports at [./coverage]
================================================================================

=============================== Coverage summary ===============================
Statements   : 100% ( 4/4 )
Branches     : 100% ( 0/0 )
Functions    : 100% ( 1/1 )
Lines        : 100% ( 2/2 )
================================================================================