Initial Commit

ProjectNow/NodeServer/node_modules/ps-tree/test/test.js

@@ -0,0 +1,70 @@
+var path = require('path');
+var test  = require('tape');
+var chalk = require('chalk');
+var cp = require('child_process');
+var treeKill = require('tree-kill');
+var psTree = require('../');
+
+var red = chalk.red,
+    green = chalk.green,
+    cyan = chalk.cyan;
+
+var scripts = {
+  parent: path.join(__dirname, 'exec', 'parent.js'),
+  child: path.join(__dirname, 'exec', 'child.js')
+};
+
+test(cyan('Spawn a Parent process which has a Two Child Processes'), function (t) {
+  var parent = cp.exec('node ' + scripts.parent, function (error, stdout, stderr) {});
+
+  setTimeout(function () {
+    psTree(parent.pid, function (err, children) {
+      if (err) { console.log(err); }
+      console.log(red('Children: '), children, '\n');
+      t.true(children.length > 0, green('✓ There are ' + children.length + ' active child processes'));
+      treeKill(parent.pid);
+    });
+
+    setTimeout(function () {
+      psTree(parent.pid, function (err, children) {
+        if (err) { console.log(err); }
+        // console.log('Children: ', children, '\n');
+        // console.log(' ')
+        t.equal(children.length, 0, green('✓ No more active child processes (we killed them)'));
+        t.end();
+      });
+    }, 2000); // give psTree time to kill the processes
+  }, 500); // give the child process time to spawn
+  // need more time on a slow(or heavy load server). maybe promise.then is better instead of the timeout
+});
+
+test(cyan('FORCE ERROR by calling psTree without supplying a Callback'), function (t) {
+  var errmsg = 'Error: childrenOfPid(pid, callback) expects callback'
+  // Attempt to call psTree without a callback
+  try { psTree(1234); }
+  catch (e) {
+    t.equal(e.toString(), errmsg, green('✓ Fails when no callback supplied (as expected)'))
+  }
+
+  t.end();
+});
+
+
+test(cyan('Spawn a Child Process and psTree with a String as pid'), function (t) {
+  var child = cp.exec('node ' + scripts.child, function(error, stdout, stderr) {});
+  setTimeout(function(){
+    psTree(child.pid.toString(), function (err, children) {
+      if (err) { console.log(err); }
+      // cp.spawn('kill', ['-9'].concat(children.map(function (p) { return p.PID })))
+      treeKill(child.pid);
+    });
+
+    setTimeout(function() {
+      psTree(child.pid.toString(), function (err, children) {
+        if (err) { console.log(err); }
+        t.equal(children.length, 0, green('✓ No more active child processes'));
+        t.end();
+      });
+    }, 1000); // give psTree time to kill the processes
+  }, 200); // give the child process time to spawn
+});