fixes #5531 (#5532)

because we can have a "describe" block but no "it" blocks inside

Author: capaj

packages/jest-jasmine2/src/__tests__/Suite.test.js

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc. All rights reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ */
+
+'use strict';
+
+import Suite from '../jasmine/Suite';
+
+describe('Suite', () => {
+  let suite;
+
+  beforeEach(() => {
+    suite = new Suite({
+      getTestPath: () => '',
+    });
+  });
+
+  it("doesn't throw on addExpectationResult when there are no children", () => {
+    expect(() => {
+      suite.addExpectationResult();
+    }).not.toThrow();
+  });
+});

packages/jest-jasmine2/src/jasmine/Suite.js

@@ -210,7 +210,7 @@ function convertDescriptorToString(descriptor) {
 }
 
 function isAfterAll(children) {
-  return children && children[0].result.status;
+  return children && children[0] && children[0].result.status;
 }
 
 function isFailure(args) {