mapContaining and setContaining asymmetric matchers

src/core/asymmetric_equality/MapContaining.js

@@ -0,0 +1,41 @@
+getJasmineRequireObj().MapContaining = function(j$) {
+  function MapContaining(sample) {
+    if (!j$.isMap(sample)) {
+      throw new Error('You must provide a map to `mapContaining`, not ' + j$.pp(sample));
+    }
+
+    this.sample = sample;
+  }
+
+  MapContaining.prototype.asymmetricMatch = function(other, customTesters) {
+    if (!j$.isMap(other)) return false;
+
+    var hasAllMatches = true;
+    j$.util.forEachBreakable(this.sample, function(breakLoop, value, key) {
+      // for each key/value pair in `sample`
+      // there should be at least one pair in `other` whose key and value both match
+      var hasMatch = false;
+      j$.util.forEachBreakable(other, function(oBreakLoop, oValue, oKey) {
+        if (
+          j$.matchersUtil.equals(oKey, key, customTesters)
+          && j$.matchersUtil.equals(oValue, value, customTesters)
+        ) {
+          hasMatch = true;
+          oBreakLoop();
+        }
+      });
+      if (!hasMatch) {
+        hasAllMatches = false;
+        breakLoop();
+      }
+    });
+
+    return hasAllMatches;
+  };
+
+  MapContaining.prototype.jasmineToString = function() {
+    return '<jasmine.mapContaining(' + j$.pp(this.sample) + ')>';
+  };
+
+  return MapContaining;
+};