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express-server/node_modules/pstree.remy/tests/index.test.js

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+const tap = require('tap');
+const test = tap.test;
+const readFile = require('fs').readFileSync;
+const spawn = require('child_process').spawn;
+const pstree = require('../');
+const { tree, pidsForTree, getStat } = require('../lib/utils');
+
+if (process.platform !== 'darwin') {
+  test('reads from /proc', async t => {
+    const ps = await getStat();
+    t.ok(ps.split('\n').length > 1);
+  });
+}
+
+test('tree for live env', async t => {
+  const pid = 4079;
+  const fixture = readFile(__dirname + '/fixtures/out2', 'utf8');
+  const ps = await tree(fixture);
+  t.deepEqual(pidsForTree(ps, pid).map(_ => _.PID), ['4080']);
+});
+
+test('can read full child process tree', t => {
+  const sub = spawn('node', [`${__dirname}/fixtures/index.js`], {
+    stdio: 'pipe',
+  });
+  setTimeout(() => {
+    const pid = sub.pid;
+
+    pstree(pid, (error, children) => {
+      children.concat([pid]).forEach(p => {
+        spawn('kill', ['-s', 'SIGTERM', p]);
+      });
+
+      console.log(children);
+
+      t.equal(children.length, 2);
+      t.end();
+    });
+  }, 1000);
+});