Merge branch 'tobepending' of https://github.com/DCtheTall/jasmine

* Merges #1808 from @DCtheTall
* Fixes #1803

lib/jasmine-core/jasmine.js

@@ -4054,6 +4054,32 @@ getJasmineRequireObj().GlobalErrors = function(j$) {
   return GlobalErrors;
 };
 
+getJasmineRequireObj().toBePending = function(j$) {
+  /**
+   * Expect a promise to be pending, ie. the promise is neither resolved nor rejected.
+   * @function
+   * @async
+   * @name async-matchers#toBePending
+   * @since 3.5.1 (should this be the next version or the version when it was added?)
+   * @example
+   * await expectAsync(aPromise).toBePending();
+   */
+  return function toBePending() {
+    return {
+      compare: function(actual) {
+        if (!j$.isPromiseLike(actual)) {
+          throw new Error('Expected toBePending to be called on a promise.');
+        }
+        var want = {};
+        return Promise.race([actual, Promise.resolve(want)]).then(
+          function(got) { return {pass: want === got}; },
+          function() { return {pass: false}; }
+        );
+      }
+    };
+  };
+};
+
 getJasmineRequireObj().toBeRejected = function(j$) {
   /**
    * Expect a promise to be rejected.
@@ -5087,6 +5113,7 @@ getJasmineRequireObj().ObjectPath = function(j$) {
 
 getJasmineRequireObj().requireAsyncMatchers = function(jRequire, j$) {
   var availableMatchers = [
+      'toBePending',
       'toBeResolved',
       'toBeRejected',
       'toBeResolvedTo',