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test/fixtures/v8-coverage/async-hooks.js

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+const async_hooks = require('async_hooks');
+const common = require('../../common');
+
+const hook = async_hooks.createHook({
+  init: common.mustNotCall(),
+  before: common.mustNotCall(),
+  after: common.mustNotCall(),
+  destroy: common.mustNotCall()
+});
+
+hook.enable();

test/fixtures/v8-coverage/basic.js

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+const a = 99;
+if (true) {
+  const b = 101;
+} else {
+  const c = 102;
+}

test/fixtures/v8-coverage/combined_coverage/common.js

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+'use strict';
+function fnA() {
+  let cnt = 0;
+
+  try {
+    cnt++;
+    throw new Error('boom');
+    cnt++;
+  } catch (err) {
+    cnt++;
+  } finally {
+    if (false) {
+
+    }
+
+    return cnt;
+  }
+  cnt++;
+}
+
+function fnB(arr) {
+  for (let i = 0; i < arr.length; ++i) {
+    if (i === 2) {
+      continue;
+    } else {
+      fnE(1);
+    }
+  }
+}
+
+function fnC(arg1, arg2) {
+  if (arg1 === 1) {
+    if (arg2 === 3) {
+      return -1;
+    }
+
+    if (arg2 === 4) {
+      return 3;
+    }
+
+    if (arg2 === 5) {
+      return 9;
+    }
+  }
+}
+
+function fnD(arg) {
+  let cnt = 0;
+
+  if (arg % 2 === 0) {
+    cnt++;
+  } else if (arg === 1) {
+    cnt++;
+  } else if (arg === 3) {
+    cnt++;
+  } else {
+    fnC(1, 5);
+  }
+
+  return cnt;
+}
+
+function fnE(arg) {
+  const a = arg ?? 5;
+
+  return a;
+}
+
+module.exports = { fnA, fnB, fnC, fnD, fnE };

test/fixtures/v8-coverage/combined_coverage/first.test.js

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+'use strict';
+const { test } = require('node:test');
+const common = require('./common');
+
+function notCalled() {
+}
+
+test('first 1', () => {
+  common.fnA();
+  common.fnD(100);
+  common.fnB([1, 2, 3]);
+});

test/fixtures/v8-coverage/combined_coverage/second.test.js

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+'use strict';
+const { test } = require('node:test');
+const common = require('./common');
+
+test('second 1', () => {
+  common.fnB([1, 2, 3]);
+  common.fnD(3);
+});

test/fixtures/v8-coverage/combined_coverage/third.test.js

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+'use strict';
+const assert = require('node:assert');
+const { unlinkSync, writeFileSync } = require('node:fs')
+const { join } = require('node:path');
+const { test } = require('node:test');
+const common = require('./common');
+
+test('third 1', () => {
+  common.fnC(1, 4);
+  common.fnD(99);
+});
+
+assert(process.env.NODE_TEST_TMPDIR);
+const tmpFilePath = join(process.env.NODE_TEST_TMPDIR, 'temp-module.js');
+writeFileSync(tmpFilePath, `
+  module.exports = {
+    fn() {
+      return 42;
+    }
+  };
+`);
+const tempModule = require(tmpFilePath);
+assert.strictEqual(tempModule.fn(), 42);
+// Deleted files should not be part of the coverage report.
+unlinkSync(tmpFilePath);

test/fixtures/v8-coverage/exit-1.js

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+const a = 99;
+if (true) {
+  const b = 101;
+} else {
+  const c = 102;
+}
+process.exit(1);

test/fixtures/v8-coverage/interval.js

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+'use strict';
+let counter = 0;
+let result;
+const TEST_INTERVALS = parseInt(process.env.TEST_INTERVALS) || 1;
+
+const i = setInterval(function interval() {
+  counter++;
+  if (counter < TEST_INTERVALS) {
+    result = 1;
+  } else {
+    result = process.hrtime();
+    clearInterval(i);
+  }
+}, 100);

test/fixtures/v8-coverage/sigint.js

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+const a = 99;
+if (true) {
+  const b = 101;
+} else {
+  const c = 102;
+}
+process.kill(process.pid, "SIGINT");

test/fixtures/v8-coverage/spawn-subprocess-no-cov.js

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+const { spawnSync } = require('child_process');
+const env = { ...process.env, NODE_V8_COVERAGE: '' };
+spawnSync(process.execPath, [require.resolve('./subprocess')], {
+  env: env
+});

test/fixtures/v8-coverage/spawn-subprocess.js

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+const { spawnSync } = require('child_process');
+const env = { ...process.env };
+delete env.NODE_V8_COVERAGE
+spawnSync(process.execPath, [require.resolve('./subprocess')], {
+  env: env
+});

test/fixtures/v8-coverage/stop-coverage.js

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+'use strict';
+const v8 = require('v8');
+v8.stopCoverage();

test/fixtures/v8-coverage/subprocess.js

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+const a = 99;
+setTimeout(() => {
+  if (false) {
+    const b = 101;
+  } else if (false) {
+    const c = 102;
+  }
+}, 10);

test/fixtures/v8-coverage/take-coverage.js

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+'use strict';
+const v8 = require('v8');
+
+setTimeout(() => {
+  v8.takeCoverage();
+}, 1000);
+
+setTimeout(() => {
+  v8.takeCoverage();
+}, 2000);

test/fixtures/v8-coverage/throw.js

@@ -0,0 +1,7 @@
+const a = 99;
+if (true) {
+  const b = 101;
+} else {
+  const c = 102;
+}
+throw new Error('test');

test/fixtures/v8-coverage/worker.js

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+'use strict';
+const { Worker } = require('worker_threads');
+const path = require('path');
+
+new Worker(path.resolve(__dirname, 'subprocess.js'));