filter object and return count in jasmine -

i'm new jasmine-karma. trying figure out how execute below scenario.

this works fine

describe("jasmine.objectcontaining", function() {   var foo;    beforeeach(function() {     foo = {       a: 1,       b: 2,       bar: "baz"     };   });    it("matches objects expect key/value pairs", function() {     expect(foo).toequal(jasmine.objectcontaining({       bar: "baz"     }));   }); }); 

but if change object array of objects doesn't work. so, how filter array of objects , return count.

eg.

describe("jasmine.objectcontaining", function() {       var foo;        beforeeach(function() {         foo = [{           a: 1,           b: 2,           bar: "baz"         },        {           a: 1,           b: 2,           bar: "bdd"         }         ];       });        it("matches objects expect key/value pairs", function() {         expect(foo).//find object(s) containing bar:"baz" , should return count=1         }));       }); }); 

without jasmine.objectcontaining can implemented us:

describe("array.filter returns entries", function() {    var foo;      beforeeach(function() {      foo = [{          a: 1,          b: 2,          bar: "baz"        },        {          a: 1,          b: 2,          bar: "bdd"        }      ];    });      it("matched key/value", function() {      expect(foo.filter(function(element) {           return element.bar === 'baz'      }).length).tobe(1);    });  });

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