Merge pull request #501 from tschaub/logical

Logical filter touch-ups

test/spec/ol/filter/logicalfilter.test.js

@@ -0,0 +1,144 @@
+goog.provide('ol.test.filter.Logical');
+
+
+describe('ol.filter.Logical', function() {
+
+  var OR = ol.filter.LogicalOperator.OR;
+  var AND = ol.filter.LogicalOperator.AND;
+  var NOT = ol.filter.LogicalOperator.NOT;
+  var include = new ol.filter.Filter(function() {return true});
+  var exclude = new ol.filter.Filter(function() {return false});
+
+  var apple = new ol.Feature({});
+  var orange = new ol.Feature({});
+  var duck = new ol.Feature({});
+
+  var isApple = new ol.filter.Filter(function(feature) {
+    return feature === apple;
+  });
+  var isOrange = new ol.filter.Filter(function(feature) {
+    return feature === orange;
+  });
+  var isDuck = new ol.filter.Filter(function(feature) {
+    return feature === duck;
+  });
+
+  describe('constructor', function() {
+    it('creates a new filter', function() {
+      var filter = new ol.filter.Logical([include, exclude], OR);
+      expect(filter).to.be.a(ol.filter.Logical);
+    });
+  });
+
+  describe('#operator', function() {
+    it('can be OR', function() {
+      var filter = new ol.filter.Logical([include, exclude], OR);
+      expect(filter.operator).to.be(OR);
+    });
+
+    it('can be AND', function() {
+      var filter = new ol.filter.Logical([include, exclude], AND);
+      expect(filter.operator).to.be(AND);
+    });
+
+    it('can be NOT', function() {
+      var filter = new ol.filter.Logical([include], NOT);
+      expect(filter.operator).to.be(NOT);
+    });
+  });
+
+  describe('#applies', function() {
+
+    it('works for OR', function() {
+      var isFruit = new ol.filter.Logical([isApple, isOrange], OR);
+
+      expect(isApple.applies(apple)).to.be(true);
+      expect(isOrange.applies(apple)).to.be(false);
+      expect(isFruit.applies(apple)).to.be(true);
+
+      expect(isApple.applies(duck)).to.be(false);
+      expect(isOrange.applies(duck)).to.be(false);
+      expect(isFruit.applies(duck)).to.be(false);
+    });
+
+    it('works for AND', function() {
+      expect(include.applies(apple)).to.be(true);
+      expect(isApple.applies(apple)).to.be(true);
+      expect(isDuck.applies(apple)).to.be(false);
+
+      var pass = new ol.filter.Logical([include, isApple], AND);
+      expect(pass.applies(apple)).to.be(true);
+
+      var fail = new ol.filter.Logical([isApple, isDuck], AND);
+      expect(fail.applies(apple)).to.be(false);
+    });
+
+    it('works for NOT', function() {
+      expect(isApple.applies(apple)).to.be(true);
+      expect(isDuck.applies(apple)).to.be(false);
+      expect(isDuck.applies(duck)).to.be(true);
+      expect(isDuck.applies(apple)).to.be(false);
+
+      var notApple = new ol.filter.Logical([isApple], NOT);
+      expect(notApple.applies(apple)).to.be(false);
+      expect(notApple.applies(duck)).to.be(true);
+
+      var notDuck = new ol.filter.Logical([isDuck], NOT);
+      expect(notDuck.applies(apple)).to.be(true);
+      expect(notDuck.applies(duck)).to.be(false);
+    });
+  });
+
+});
+
+describe('ol.filter.and', function() {
+  it('creates the a logical AND filter', function() {
+    var a = new ol.filter.Filter();
+    var b = new ol.filter.Filter();
+    var c = new ol.filter.Filter();
+    var and = ol.filter.and(a, b, c);
+    expect(and).to.be.a(ol.filter.Logical);
+    expect(and.operator).to.be(ol.filter.LogicalOperator.AND);
+    var filters = and.getFilters();
+    expect(filters[0]).to.be(a);
+    expect(filters[1]).to.be(b);
+    expect(filters[2]).to.be(c);
+  });
+});
+
+describe('ol.filter.not', function() {
+  it('creates the logical compliment of another filter', function() {
+    var include = new ol.filter.Filter(function() {return true;});
+    var notInclude = ol.filter.not(include);
+    expect(notInclude).to.be.a(ol.filter.Logical);
+    expect(notInclude.applies()).to.be(false);
+
+    var exclude = new ol.filter.Filter(function() {return false;});
+    var notExclude = ol.filter.not(exclude);
+    expect(notExclude).to.be.a(ol.filter.Logical);
+    expect(notExclude.applies()).to.be(true);
+  });
+});
+
+describe('ol.filter.or', function() {
+  it('creates the a logical OR filter', function() {
+    var a = new ol.filter.Filter();
+    var b = new ol.filter.Filter();
+    var c = new ol.filter.Filter();
+    var and = ol.filter.or(a, b, c);
+    expect(and).to.be.a(ol.filter.Logical);
+    expect(and.operator).to.be(ol.filter.LogicalOperator.OR);
+    var filters = and.getFilters();
+    expect(filters[0]).to.be(a);
+    expect(filters[1]).to.be(b);
+    expect(filters[2]).to.be(c);
+  });
+});
+
+goog.require('ol.Feature');
+goog.require('ol.filter.Filter');
+goog.require('ol.filter.Logical');
+goog.require('ol.filter.LogicalOperator');
+goog.require('ol.filter.and');
+goog.require('ol.filter.not');
+goog.require('ol.filter.or');