Added jQuery selector matchers

jdelStrother · May 17, 2008 · de2b3ea · de2b3ea
1 parent 3925d7b
commit de2b3ea
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diff --git a/lib/screw.matchers.js b/lib/screw.matchers.js
@@ -112,6 +112,34 @@ Screw.Matchers = (function($) {
       failure_message: function(expected, actual, not) {
         return 'expected ' + $.print(actual) + (not ? ' to not be false' : ' to be false');
       }
+    },
+
+    match_selector: {
+      match: function(expected, actual) {
+        if (!(actual instanceof jQuery)) {
+          throw expected.toString() + " must be an instance of jQuery to match against a selector"
+        }
+
+        return actual.is(expected);
+      },
+
+      failure_message: function(expected, actual, not) {
+        return 'expected ' + $.print(actual) + (not ? ' to not match selector ' : ' to match selector ') + expected;
+      }
+    },
+
+    contain_selector: {
+      match: function(expected, actual) {
+        if (!(actual instanceof jQuery)) {
+          throw expected.toString() + " must be an instance of jQuery to match against a selector"
+        }
+
+        return actual.find(expected).length > 0;
+      },
+
+      failure_message: function(expected, actual, not) {
+        return 'expected ' + $.print(actual) + (not ? ' to not contain selector ' : ' to contain selector ') + expected;
+      }
     }
   }
 })(jQuery);
diff --git a/spec/matchers_spec.js b/spec/matchers_spec.js
@@ -187,6 +187,51 @@ Screw.Unit(function() {
       });
     });
 
+    describe('#match_selector', function() {
+      var elt;
+      before(function() {
+        elt = $("<div class='foo'></div>");
+      });
+
+      it("matches a jQuery element against the expected selector", function() {
+        expect(elt).to(match_selector, 'div.foo');
+        expect(elt).to_not(match_selector, 'div.bar');
+      });
+
+      describe(".failure_message", function() {
+        it("prints 'expected [actual] to (not) match selector [expected]", function() {
+          var message = false;
+          try { expect(elt).to(match_selector, 'div.bar') } catch(e) { message = e }
+          expect(message).to(equal, 'expected $([ <div class="foo"> ]) to match selector div.bar');
+
+          try { expect(elt).to_not(match_selector, 'div.foo') } catch(e) { message = e }
+          expect(message).to(equal, 'expected $([ <div class="foo"> ]) to not match selector div.foo');
+        });
+      });
+    });
+
+    describe('#contain_selector', function() {
+      var elt;
+      before(function() {
+        elt = $("<div><div class='foo'></div></div>");
+      });
+
+      it("matches a jQuery element against the expected selector", function() {
+        expect(elt).to(contain_selector, 'div.foo');
+        expect(elt).to_not(contain_selector, 'div.bar');
+      });
+
+      describe(".failure_message", function() {
+        it("prints 'expected [actual] to (not) match selector [expected]", function() {
+          var message = false;
+          try { expect(elt).to(contain_selector, 'div.bar') } catch(e) { message = e }
+          expect(message).to(equal, 'expected $([ <div> ]) to contain selector div.bar');
+
+          try { expect(elt).to_not(contain_selector, 'div.foo') } catch(e) { message = e }
+          expect(message).to(equal, 'expected $([ <div> ]) to not contain selector div.foo');
+        });
+      });
+    });
 
   });
 });