test: fix test-repl-tab-complete.js

test-repl-tab-complete.js contains numerous assertions that are
never run. Anything that results in a ReferenceError bails out,
and never calls the functions containing the assertions. This
commit adds checking for successful tab completions, as well as
ReferenceErrors.

PR-URL: #2052
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

test/parallel/test-repl-tab-complete.js

@@ -2,8 +2,18 @@
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
-
 var repl = require('repl');
+var referenceErrors = 0;
+var completionCount = 0;
+
+function doNotCall() {
+  assert(false);
+}
+
+process.on('exit', function() {
+  assert.strictEqual(referenceErrors, 6);
+  assert.strictEqual(completionCount, 12);
+});
 
 // A stream to push an array into a REPL
 function ArrayStream() {
@@ -21,27 +31,37 @@ ArrayStream.prototype.resume = function() {};
 ArrayStream.prototype.write = function() {};
 
 var works = [['inner.one'], 'inner.o'];
-var doesNotBreak = [[], 'inner.o'];
-
 var putIn = new ArrayStream();
 var testMe = repl.start('', putIn);
 
+// Some errors are passed to the domain, but do not callback
+testMe._domain.on('error', function(err) {
+  // Errors come from another context, so instanceof doesn't work
+  var str = err.toString();
+
+  if (/^ReferenceError:/.test(str))
+    referenceErrors++;
+  else
+    assert(false);
+});
+
 // Tab Complete will not break in an object literal
 putIn.run(['.clear']);
 putIn.run([
   'var inner = {',
   'one:1'
 ]);
-testMe.complete('inner.o', function(error, data) {
-  assert.deepEqual(data, doesNotBreak);
-});
+testMe.complete('inner.o', doNotCall);
+
 testMe.complete('console.lo', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, [['console.log'], 'console.lo']);
 });
 
 // Tab Complete will return globaly scoped variables
 putIn.run(['};']);
 testMe.complete('inner.o', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, works);
 });
 
@@ -53,9 +73,7 @@ putIn.run([
   '?',
   '{one: 1} : '
 ]);
-testMe.complete('inner.o', function(error, data) {
-  assert.deepEqual(data, doesNotBreak);
-});
+testMe.complete('inner.o', doNotCall);
 
 putIn.run(['.clear']);
 
@@ -65,15 +83,14 @@ putIn.run([
   'var inner = {one:1};'
 ]);
 testMe.complete('inner.o', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, works);
 });
 
 // When you close the function scope tab complete will not return the
 // locally scoped variable
 putIn.run(['};']);
-testMe.complete('inner.o', function(error, data) {
-  assert.deepEqual(data, doesNotBreak);
-});
+testMe.complete('inner.o', doNotCall);
 
 putIn.run(['.clear']);
 
@@ -85,6 +102,7 @@ putIn.run([
   '};'
 ]);
 testMe.complete('inner.o', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, works);
 });
 
@@ -99,6 +117,7 @@ putIn.run([
   '};'
 ]);
 testMe.complete('inner.o', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, works);
 });
 
@@ -114,12 +133,12 @@ putIn.run([
   '};'
 ]);
 testMe.complete('inner.o', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, works);
 });
 
 putIn.run(['.clear']);
 
-// currently does not work, but should not break note the inner function
 // def has the params and { on a separate line
 putIn.run([
   'var top = function() {',
@@ -129,9 +148,7 @@ putIn.run([
   ' one:1',
   '};'
 ]);
-testMe.complete('inner.o', function(error, data) {
-  assert.deepEqual(data, doesNotBreak);
-});
+testMe.complete('inner.o', doNotCall);
 
 putIn.run(['.clear']);
 
@@ -144,9 +161,7 @@ putIn.run([
   ' one:1',
   '};'
 ]);
-testMe.complete('inner.o', function(error, data) {
-  assert.deepEqual(data, doesNotBreak);
-});
+testMe.complete('inner.o', doNotCall);
 
 putIn.run(['.clear']);
 
@@ -160,9 +175,7 @@ putIn.run([
   ' one:1',
   '};'
 ]);
-testMe.complete('inner.o', function(error, data) {
-  assert.deepEqual(data, doesNotBreak);
-});
+testMe.complete('inner.o', doNotCall);
 
 putIn.run(['.clear']);
 
@@ -171,6 +184,7 @@ putIn.run([
   'var str = "test";'
 ]);
 testMe.complete('str.len', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, [['str.length'], 'str.len']);
 });
 
@@ -182,29 +196,40 @@ var spaceTimeout = setTimeout(function() {
 }, 1000);
 
 testMe.complete(' ', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, [[], undefined]);
   clearTimeout(spaceTimeout);
 });
 
 // tab completion should pick up the global "toString" object, and
 // any other properties up the "global" object's prototype chain
 testMe.complete('toSt', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, [['toString'], 'toSt']);
 });
 
 // Tab complete provides built in libs for require()
 putIn.run(['.clear']);
 
 testMe.complete('require(\'', function(error, data) {
+  completionCount++;
   assert.strictEqual(error, null);
   repl._builtinLibs.forEach(function(lib) {
     assert.notStrictEqual(data[0].indexOf(lib), -1, lib + ' not found');
   });
 });
 
 testMe.complete('require(\'n', function(error, data) {
+  completionCount++;
   assert.strictEqual(error, null);
-  assert.deepEqual(data, [['net'], 'n']);
+  assert.strictEqual(data.length, 2);
+  assert.strictEqual(data[1], 'n');
+  assert.notStrictEqual(data[0].indexOf('net'), -1);
+  // It's possible to pick up non-core modules too
+  data[0].forEach(function(completion) {
+    if (completion)
+      assert(/^n/.test(completion));
+  });
 });
 
 // Make sure tab completion works on context properties
@@ -214,5 +239,6 @@ putIn.run([
   'var custom = "test";'
 ]);
 testMe.complete('cus', function(error, data) {
+  completionCount++;
   assert.deepEqual(data, [['custom'], 'cus']);
 });