test: move coverage source map tests to new file

test/parallel/test-runner-coverage-source-map.js

@@ -0,0 +1,83 @@
+'use strict';
+const common = require('../common');
+const { pathToFileURL } = require('url');
+const fixtures = require('../common/fixtures');
+common.skipIfInspectorDisabled();
+
+const { describe, it } = require('node:test');
+
+function generateReport(report) {
+  report = ([
+    '# start of coverage report',
+    ...report,
+    '# end of coverage report',
+  ]).join('\n');
+  if (common.isWindows) {
+    report = report.replaceAll('/', '\\');
+  }
+  return report;
+}
+
+const flags = [
+  '--test', '--experimental-test-coverage', '--test-reporter', 'tap',
+];
+
+describe('Coverage with source maps', async () => {
+  await it('should work with source maps', async (t) => {
+    const report = generateReport([
+      '# --------------------------------------------------------------',
+      '# file          | line % | branch % | funcs % | uncovered lines',
+      '# --------------------------------------------------------------',
+      '# a.test.ts     |  53.85 |   100.00 |  100.00 | 8-13',  // part of a bundle
+      '# b.test.ts     |  55.56 |   100.00 |  100.00 | 1 7-9', // part of a bundle
+      '# index.test.js |  71.43 |    66.67 |  100.00 | 6-7',  // no source map
+      '# stdin.test.ts |  57.14 |   100.00 |  100.00 | 4-6',  // Source map without original file
+      '# --------------------------------------------------------------',
+      '# all files     |  58.33 |    87.50 |  100.00 | ',
+      '# --------------------------------------------------------------',
+    ]);
+
+    const spawned = await common.spawnPromisified(process.execPath, flags, {
+      cwd: fixtures.path('test-runner', 'coverage')
+    });
+    t.assert.strictEqual(spawned.stderr, '');
+    t.assert.ok(spawned.stdout.includes(report));
+    t.assert.strictEqual(spawned.code, 1);
+  });
+
+  await it('properly accounts for line endings in source maps', async (t) => {
+    const report = generateReport([
+      '# ------------------------------------------------------------------',
+      '# file              | line % | branch % | funcs % | uncovered lines',
+      '# ------------------------------------------------------------------',
+      '# test              |        |          |         | ',
+      '#  fixtures         |        |          |         | ',
+      '#   test-runner     |        |          |         | ',
+      '#    source-maps    |        |          |         | ',
+      '#     line-lengths  |        |          |         | ',
+      '#      index.ts     | 100.00 |   100.00 |  100.00 | ',
+      '# ------------------------------------------------------------------',
+      '# all files         | 100.00 |   100.00 |  100.00 | ',
+      '# ------------------------------------------------------------------',
+    ]);
+
+    const spawned = await common.spawnPromisified(process.execPath, [
+      ...flags,
+      fixtures.path('test-runner', 'source-maps', 'line-lengths', 'index.js'),
+    ]);
+    t.assert.strictEqual(spawned.stderr, '');
+    t.assert.ok(spawned.stdout.includes(report));
+    t.assert.strictEqual(spawned.code, 0);
+  });
+
+  await it('should throw when a source map is missing a source file', async (t) => {
+    const file = fixtures.path('test-runner', 'source-maps', 'missing-sources', 'index.js');
+    const missing = fixtures.path('test-runner', 'source-maps', 'missing-sources', 'nonexistent.js');
+    const spawned = await common.spawnPromisified(process.execPath, [...flags, file]);
+
+    const error = `Cannot find '${pathToFileURL(missing)}' imported from the source map for '${pathToFileURL(file)}'`;
+    t.assert.strictEqual(spawned.stderr, '');
+    t.assert.ok(spawned.stdout.includes(error));
+    t.assert.strictEqual(spawned.code, 1);
+  });
+}).then(common.mustCall());

test/parallel/test-runner-coverage.js

@@ -6,7 +6,6 @@ const { readdirSync } = require('node:fs');
 const { test } = require('node:test');
 const fixtures = require('../common/fixtures');
 const tmpdir = require('../common/tmpdir');
-const { pathToFileURL } = require('node:url');
 const skipIfNoInspector = {
   skip: !process.features.inspector ? 'inspector disabled' : false
 };
@@ -290,51 +289,6 @@ test('coverage reports on lines, functions, and branches', skipIfNoInspector, as
   });
 });
 
-test('coverage with source maps', skipIfNoInspector, () => {
-  let report = [
-    '# start of coverage report',
-    '# --------------------------------------------------------------',
-    '# file          | line % | branch % | funcs % | uncovered lines',
-    '# --------------------------------------------------------------',
-    '# a.test.ts     |  53.85 |   100.00 |  100.00 | 8-13',  // part of a bundle
-    '# b.test.ts     |  55.56 |   100.00 |  100.00 | 1 7-9', // part of a bundle
-    '# index.test.js |  71.43 |    66.67 |  100.00 | 6-7',  // no source map
-    '# stdin.test.ts |  57.14 |   100.00 |  100.00 | 4-6',  // Source map without original file
-    '# --------------------------------------------------------------',
-    '# all files     |  58.33 |    87.50 |  100.00 | ',
-    '# --------------------------------------------------------------',
-    '# end of coverage report',
-  ].join('\n');
-
-  if (common.isWindows) {
-    report = report.replaceAll('/', '\\');
-  }
-
-  const fixture = fixtures.path('test-runner', 'coverage');
-  const args = [
-    '--test', '--experimental-test-coverage', '--test-reporter', 'tap',
-  ];
-  const result = spawnSync(process.execPath, args, { cwd: fixture });
-
-  assert.strictEqual(result.stderr.toString(), '');
-  assert(result.stdout.toString().includes(report));
-  assert.strictEqual(result.status, 1);
-});
-
-test('coverage with source maps missing sources', skipIfNoInspector, () => {
-  const file = fixtures.path('test-runner', 'source-map-missing-sources', 'index.js');
-  const missing = fixtures.path('test-runner', 'source-map-missing-sources', 'nonexistent.js');
-  const result = spawnSync(process.execPath, [
-    '--test',
-    '--experimental-test-coverage',
-    file,
-  ]);
-
-  const error = `Cannot find '${pathToFileURL(missing)}' imported from the source map for '${pathToFileURL(file)}'`;
-  assert(result.stdout.toString().includes(error));
-  assert.strictEqual(result.status, 1);
-});
-
 test('coverage with ESM hook - source irrelevant', skipIfNoInspector, () => {
   let report = [
     '# start of coverage report',
@@ -501,34 +455,6 @@ test('coverage with included and excluded files', skipIfNoInspector, () => {
   assert(!findCoverageFileForPid(result.pid));
 });
 
-test('properly accounts for line endings in source maps', skipIfNoInspector, () => {
-  const fixture = fixtures.path('test-runner', 'source-map-line-lengths', 'index.js');
-  const args = [
-    '--test', '--experimental-test-coverage', '--test-reporter', 'tap',
-    fixture,
-  ];
-  const report = [
-    '# start of coverage report',
-    '# ----------------------------------------------------------------------------',
-    '# file                        | line % | branch % | funcs % | uncovered lines',
-    '# ----------------------------------------------------------------------------',
-    '# test                        |        |          |         | ',
-    '#  fixtures                   |        |          |         | ',
-    '#   test-runner               |        |          |         | ',
-    '#    source-map-line-lengths  |        |          |         | ',
-    '#     index.ts                | 100.00 |   100.00 |  100.00 | ',
-    '# ----------------------------------------------------------------------------',
-    '# all files                   | 100.00 |   100.00 |  100.00 | ',
-    '# ----------------------------------------------------------------------------',
-    '# end of coverage report',
-  ].join('\n');
-
-  const result = spawnSync(process.execPath, args);
-  assert.strictEqual(result.stderr.toString(), '');
-  assert(result.stdout.toString().includes(report));
-  assert.strictEqual(result.status, 0);
-});
-
 test('correctly prints the coverage report of files contained in parent directories', skipIfNoInspector, () => {
   let report = [
     '# start of coverage report',