WIP - add extractor, generate snippet_data

node_modules/sift/test/use-test.js

@@ -0,0 +1,95 @@
+var assert = require("assert"),
+sift = require(".."),
+ObjectID = require('bson').pure().ObjectID;
+
+describe(__filename + "#", function() {
+
+  it("can use custom operators", function() {
+
+    var i = 0;
+
+    sift.use({
+      $abba: function(a, b) {
+        i++;
+      }
+    });
+
+    sift({ a: {$abba:-1}}, [1, 2, 3]);
+
+    // expect(i).to.be(3);
+    assert.equal(i, 3);
+  });
+
+  it("can use a function", function(next) {
+    sift.use(function(sift) {
+      assert.equal(sift(1, [1, 2, 3]).length, 1);
+      next();
+    })
+  });
+
+  sift.use({
+    $notb: function(a, b) {
+      return a != b ? true : false;
+    }
+  });
+
+  var topic = [1, 2, 3, 4, 5, 6, 6, 4, 3];
+
+  it("can use custom $notb operator", function() {
+    assert.equal(sift({$notb: 6 }, topic).indexOf(6), -1);
+  });
+
+  describe('testing equality of custom objects', function () {
+    var compare = sift.compare;
+
+    before(function() {
+      sift.compare = function(a, b) {
+        if(a && b && a._bsontype && b._bsontype) {
+          if(a.equals(b)) return 0;
+          a = a.getTimestamp().getTime();
+          b = b.getTimestamp().getTime();
+        }
+        return compare(a,b);
+      };
+    });
+
+    after(function() {
+      //put the original back
+      sift.compare = compare;
+    });
+
+    var past = ObjectID(new Date(2015,2,16).getTime()/1000);
+    var now = ObjectID();
+    var future = ObjectID.createFromTime(new Date(2038,0,1).getTime()/1000);//https://github.com/mongodb/js-bson/issues/158
+    var topic = [past, now, future];
+
+    it('should use the customized compare function to determine equality', function () {
+      var result = sift(ObjectID(future.toString()), topic);
+      assert.equal(result.length, 1);
+      assert.equal(result[0], future);
+    });
+
+    function test(query, expected) {
+      var result = sift(query, topic);
+      assert.equal(JSON.stringify(result), JSON.stringify(expected));
+    }
+
+    it('should use an ObjectIds timestamp to determine $gt', function () {
+      test({ $gt: ObjectID(now) }, [future]);
+    });
+
+    it('should use an ObjectIds timestamp to determine $lt', function () {
+      test({ $lt: ObjectID(now) }, [past]);
+    });
+
+    it('should use an ObjectIds timestamp to determine $lte', function () {
+      test({ $lte: ObjectID(now) }, [past,now]);
+    });
+
+    it('should use an ObjectIds timestamp to determine $gte', function () {
+      test({ $gte: ObjectID(now) }, [now,future]);
+    });
+
+  });
+
+});