Remove reference to test before afterAll hook runs

Fix mochajs#2006

lib/runner.js

@@ -629,6 +629,10 @@ Runner.prototype.runSuite = function(suite, fn) {
       // mark that the afterAll block has been called once
       // and so can be skipped if there is an error in it.
       afterAllHookCalled = true;
+
+      // remove reference to test
+      delete self.test;
+
       self.hook('afterAll', function() {
         self.emit('suite end', suite);
         fn(errSuite);

test/integration/fixtures/hooks/before.hook.async.error.tip.js

@@ -0,0 +1,11 @@
+describe('spec 1', function() {
+  it('should not blame me', function() { });
+});
+describe('spec 2', function() {
+  before(function(done) {
+    process.nextTick(function () {
+      throw new Error('before hook error');
+    });
+  });
+  it('skipped');
+});

test/integration/fixtures/hooks/before.hook.error.tip.js

@@ -0,0 +1,9 @@
+describe('spec 1', function() {
+  it('should not blame me', function() { });
+});
+describe('spec 2', function() {
+  before(function() {
+    throw new Error('before hook error');
+  });
+  it('skipped');
+});

test/integration/hook.err.js

@@ -16,6 +16,16 @@ describe('hook error handling', function() {
     });
   });
 
+  describe('before hook error tip', function() {
+    before(run('hooks/before.hook.error.tip.js', onlyErrorTitle));
+    it('should verify results', function() {
+      assert.deepEqual(
+        lines,
+        ['1) spec 2 "before all" hook:']
+      );
+    });
+  });
+
   describe('before each hook error', function() {
     before(run('hooks/beforeEach.hook.error.js'));
     it('should verify results', function() {
@@ -94,6 +104,16 @@ describe('hook error handling', function() {
     });
   });
 
+  describe('async - before hook error tip', function() {
+    before(run('hooks/before.hook.async.error.tip.js', onlyErrorTitle));
+    it('should verify results', function() {
+      assert.deepEqual(
+        lines,
+        ['1) spec 2 "before all" hook:']
+      );
+    });
+  });
+
   describe('async - before each hook error', function() {
     before(run('hooks/beforeEach.hook.async.error.js'));
     it('should verify results', function() {
@@ -162,7 +182,7 @@ describe('hook error handling', function() {
     });
   });
 
-  function run(fnPath) {
+  function run(fnPath, outputFilter) {
     return function(done) {
       runMocha(fnPath, [], function(err, res) {
         assert.ifError(err);
@@ -172,7 +192,7 @@ describe('hook error handling', function() {
           .map(function(line) {
             return line.trim();
           })
-          .filter(onlyConsoleOutput());
+          .filter(outputFilter || onlyConsoleOutput());
 
         done();
       });
@@ -189,3 +209,7 @@ function onlyConsoleOutput() {
     return !foundSummary && line.length > 0;
   };
 }
+
+function onlyErrorTitle(line) {
+  return !!(/^1\)/).exec(line);
+}