Manage spys/matchers/custom equalities for beforeAll

- Refactor expectations to take list of matchers
- Add spyRegistry to manage runnables' spies
- Add clone util

[#66789174]

src/core/SpyRegistry.js

@@ -0,0 +1,46 @@
+getJasmineRequireObj().SpyRegistry = function(j$) {
+
+  function SpyRegistry(options) {
+    var options = options || {};
+    var currentSpies = options.currentSpies || function() { return []; };
+
+    this.spyOn = function(obj, methodName) {
+      if (j$.util.isUndefined(obj)) {
+        throw new Error('spyOn could not find an object to spy upon for ' + methodName + '()');
+      }
+
+      if (j$.util.isUndefined(obj[methodName])) {
+        throw new Error(methodName + '() method does not exist');
+      }
+
+      if (obj[methodName] && j$.isSpy(obj[methodName])) {
+        //TODO?: should this return the current spy? Downside: may cause user confusion about spy state
+        throw new Error(methodName + ' has already been spied upon');
+      }
+
+      var spy = j$.createSpy(methodName, obj[methodName]);
+
+      currentSpies().push({
+        spy: spy,
+        baseObj: obj,
+        methodName: methodName,
+        originalValue: obj[methodName]
+      });
+
+      obj[methodName] = spy;
+
+      return spy;
+    };
+
+    this.clearSpies = function() {
+      var spies = currentSpies();
+      for (var i = 0; i < spies.length; i++) {
+        var spyEntry = spies[i];
+        spyEntry.baseObj[spyEntry.methodName] = spyEntry.originalValue;
+      }
+    };
+  }
+
+  return SpyRegistry;
+};
+