Add ES6 map support to Jasmine

src/core/PrettyPrinter.js

@@ -38,6 +38,8 @@ getJasmineRequireObj().pp = function(j$) {
         this.emitScalar('Date(' + value + ')');
       } else if (value.toString && value.toString() == '[object Set]') {
         this.emitSet(value);
+      } else if (value.toString && value.toString() == '[object Map]') {
+        this.emitMap(value);
       } else if (value.toString && typeof value === 'object' && !j$.isArray_(value) && hasCustomToString(value)) {
         this.emitScalar(value.toString());
       } else if (j$.util.arrayContains(this.seen, value)) {
@@ -68,6 +70,7 @@ getJasmineRequireObj().pp = function(j$) {
 
   PrettyPrinter.prototype.emitArray = j$.unimplementedMethod_;
   PrettyPrinter.prototype.emitSet = j$.unimplementedMethod_;
+  PrettyPrinter.prototype.emitMap = j$.unimplementedMethod_;
   PrettyPrinter.prototype.emitObject = j$.unimplementedMethod_;
   PrettyPrinter.prototype.emitScalar = j$.unimplementedMethod_;
   PrettyPrinter.prototype.emitString = j$.unimplementedMethod_;
@@ -144,6 +147,26 @@ getJasmineRequireObj().pp = function(j$) {
     this.append(' )');
   };
 
+  StringPrettyPrinter.prototype.emitMap = function(map) {
+    if (this.ppNestLevel_ > j$.MAX_PRETTY_PRINT_DEPTH) {
+      this.append('Map');
+      return;
+    }
+    this.append('Map( ');
+    var size = Math.min(map.size, j$.MAX_PRETTY_PRINT_ARRAY_LENGTH);
+    var iter = map.entries();
+    for (var i = 0; i < size; i++) {
+      if (i > 0) {
+        this.append(', ');
+      }
+      this.format(iter.next().value);
+    }
+    if (map.size > size){
+      this.append(', ...');
+    }
+    this.append(' )');
+  };
+
   StringPrettyPrinter.prototype.emitObject = function(obj) {
     var ctor = obj.constructor,
         constructorName;

src/core/matchers/matchersUtil.js

@@ -239,12 +239,12 @@ getJasmineRequireObj().matchersUtil = function(j$) {
       if (!result) {
         return false;
       }
-    } else if (className == '[object Set]') {
+    } else if (className == '[object Set]' || className == '[object Map]') {
       if (a.size != b.size) {
         diffBuilder.record(a, b);
         return false;
       }
-      var iterA = a.values(), iterB = b.values();
+      var iterA = a.entries(), iterB = b.entries();
       var valA, valB;
       do {
         valA = iterA.next();