mapContaining and setContaining asymmetric matchers

src/core/asymmetric_equality/SetContaining.js

@@ -0,0 +1,39 @@
+getJasmineRequireObj().SetContaining = function(j$) {
+  function SetContaining(sample) {
+    if (!j$.isSet(sample)) {
+      throw new Error('You must provide a set to `setContaining`, not ' + j$.pp(sample));
+    }
+
+    this.sample = sample;
+  }
+
+  SetContaining.prototype.asymmetricMatch = function(other, customTesters) {
+    if (!j$.isSet(other)) return false;
+
+    var hasAllMatches = true;
+    j$.util.forEachBreakable(this.sample, function(breakLoop, item) {
+      // for each item in `sample` there should be at least one matching item in `other`
+      // (not using `j$.matchersUtil.contains` because it compares set members by reference,
+      // not by deep value equality)
+      var hasMatch = false;
+      j$.util.forEachBreakable(other, function(oBreakLoop, oItem) {
+        if (j$.matchersUtil.equals(oItem, item, customTesters)) {
+          hasMatch = true;
+          oBreakLoop();
+        }
+      });
+      if (!hasMatch) {
+        hasAllMatches = false;
+        breakLoop();
+      }
+    });
+
+    return hasAllMatches;
+  };
+
+  SetContaining.prototype.jasmineToString = function() {
+    return '<jasmine.setContaining(' + j$.pp(this.sample) + ')>';
+  };
+
+  return SetContaining;
+};