allow node to print stacktrace

alltests.js

@@ -1,35 +1,33 @@
 if (module == require.main) {
 
-  var spawn = require('child_process').spawn,
-      path  = require('path');
-
-  var tests = ['test-fail.js', 'test-multinstance.js',
-               'test-namedtest.js', 'test-simple.js'];
+  var spawn = require('child_process').spawn;
+  var path  = require('path');
+  var assert = require('assert');
 
-  testPassCount = 0;
-
-  for (var i=0; i < tests.length; i++) {
-    var test = tests[i];
+  var tests = {
+    'test-fail.js': 1,
+    'test-multinstance.js': 0,
+    'test-namedtest.js': 0,
+    'test-simple.js': 0,
+    'test-stacktrace': 8
+  };
+
+  for (var test in tests) {
+    var expectedRetCode = tests[test];
     var testProcess = spawn(process.execPath, [path.join(__dirname, test)]);
-    
-    testProcess.stdout.on('data', function(data) {
+
+    testProcess.stdout.on('data', function (data) {
       process.stdout.write(data.toString());
     });
-    
-    testProcess.stderr.on('data', function(data) {
+
+    testProcess.stderr.on('data', function (data) {
       process.stderr.write(data.toString());
     });
 
-    testProcess.on('exit', function(code, signal) {
-      if (code === 0) { testPassCount++ };
-    });
+    (function (expectedRetCode) {
+      testProcess.on('exit', function (code, signal) {
+        assert.equal(expectedRetCode, code);
+      });
+    })(expectedRetCode);
   }
-
-  process.once('exit', function(code, signal) {
-    if (testPassCount === 3) {
-      process.exit(0);
-    } else {
-      process.exit(1);
-    }
-  });
 }

test-stacktrace.js

@@ -0,0 +1,5 @@
+var test = require('./testy')();
+var assert = test.assert;
+assert.equal(2, 3);
+
+

testy.js

@@ -17,6 +17,11 @@ process.once('exit', function (code) {
     totalTestsRan += testies[i]._testsRan;
   }
 
+  // if node process is already in an error state
+  // don't exit process manually. This allows
+  // exceptions to be printed to stderr.
+  if (code === 1) return;
+
   if (totalExpectedTests === 0) process.exit(0);
   process.exit((totalTestsRan === totalExpectedTests) ? 0 : 1);
 })