Add initial tests for Timeline PointItem (#2716)

test/PointItem.test.js

@@ -0,0 +1,65 @@
+var assert = require('assert');
+var vis = require('../dist/vis');
+var jsdom = require('mocha-jsdom');
+var moment = vis.moment;
+var timeline = vis.timeline;
+var PointItem = require("../lib/timeline/component/item/PointItem");
+var Range = timeline.Range;
+var TestSupport = require('./TestSupport');
+
+describe('Timeline PointItem', function () {
+  
+  jsdom();
+
+  it('should initialize with minimal data', function() {
+    var now = moment().toDate();
+    var pointItem = new PointItem({start: now}, null, null);
+    assert.equal(pointItem.props.content.height, 0);
+    assert.equal(pointItem.data.start, now);
+  });
+
+  it('should have a default width of 0', function() {
+    var now = moment().toDate();
+    var pointItem = new PointItem({start: now}, null, null);
+    assert.equal(pointItem.getWidthRight(), 0);
+    assert.equal(pointItem.getWidthLeft(), 0);
+   });
+
+  it('should error if there is missing data', function () {
+    assert.throws(function () { new PointItem({}, null, null)}, Error);
+  });
+
+  it('should be visible if the range is during', function() {
+    var now = moment();
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
+    range.start = now.clone().add(-1, 'second');
+    range.end = range.start.clone().add(1, 'hour');
+    var pointItem = new PointItem({start: now.toDate()}, null, null);
+    assert(pointItem.isVisible(range));
+  });
+
+  it('should not be visible if the range is after', function() {
+    var now = moment();
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
+    range.start = now.clone().add(1, 'second');
+    range.end = range.start.clone().add(1, 'hour');
+    var pointItem = new PointItem({start: now.toDate()}, null, null);
+    assert(!pointItem.isVisible(range));
+  });
+
+  it('should not be visible if the range is before', function() {
+    var now = moment();
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
+    range.end = now.clone().add(-1, 'second');
+    range.start = range.end.clone().add(-1, 'hour');
+    var pointItem = new PointItem({start: now.toDate()}, null, null);
+    assert(!pointItem.isVisible(range));
+  });
+
+  it('should be visible for a "now" point with a default range', function() {
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
+    var now = moment().toDate();
+    var pointItem = new PointItem({start: now}, null, null);
+    assert(pointItem.isVisible(range));
+  });
+});

test/TestSupport.js

@@ -0,0 +1,22 @@
+
+module.exports = {
+  buildSimpleTimelineRangeBody: function () {
+    var body = {
+      dom: {
+        center: {
+          clientWidth: 1000
+        }
+      },
+      domProps: this.props,
+      emitter: {
+        on: function () {},
+        off: function () {},
+        emit: function () {}
+      },
+      hiddenDates: [],
+      util: {}
+    }
+    body.dom.rollingModeBtn = document.createElement('div')
+    return body
+  }
+}

test/TimelineRange.test.js

@@ -4,26 +4,7 @@ var jsdom = require('mocha-jsdom')
 var moment = vis.moment;
 var timeline = vis.timeline;
 var Range = timeline.Range;
-
-function buildSimpleBody() {
-  var body = {
-      dom: {
-        center: {
-          clientWidth: 1000
-        }
-      },
-      domProps: this.props,
-      emitter: {
-        on: function() {},
-        off: function() {},
-        emit: function() {}
-      },
-      hiddenDates: [],
-      util: {}
-    };
-    body.dom.rollingModeBtn = document.createElement('div');
-    return body;
-}
+var TestSupport = require('./TestSupport');
 
 describe('Timeline Range', function () {
   
@@ -31,30 +12,30 @@ describe('Timeline Range', function () {
 
   it('should have start default before now', function () {
     var now = moment().hours(0).minutes(0).seconds(0).milliseconds(0).valueOf();
-    var range = new Range(buildSimpleBody());
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
     assert(range.start < now, "Default start is before now");
   });
 
   it('should have end default after now', function () {
     var now = moment().hours(0).minutes(0).seconds(0).milliseconds(0).valueOf();
-    var range = new Range(buildSimpleBody());
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
     assert(range.end > now, "Default end is after now");
   });
 
   it('should support custom start and end dates', function () {
-    var range = new Range(buildSimpleBody());
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
     range.setRange(new Date(2017, 0, 26, 13, 26, 3, 320), new Date(2017, 3, 11, 0, 23, 35, 0), false, false, null);
     assert.equal(range.start, new Date(2017, 0, 26, 13, 26, 3, 320).valueOf(),  "start is as expected");
     assert.equal(range.end, new Date(2017, 3, 11, 0, 23, 35, 0).valueOf(),  "end is as expected");
   });
 
   it('should calculate milliseconds per pixel', function () {
-    var range = new Range(buildSimpleBody());
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
     assert(range.getMillisecondsPerPixel() > 0, "positive value for milliseconds per pixel");
   });
 
   it('should calculate 1 millisecond per pixel for simple range', function () {
-    var range = new Range(buildSimpleBody());
+    var range = new Range(TestSupport.buildSimpleTimelineRangeBody());
     range.setRange(new Date(2017, 0, 26, 13, 26, 3, 320), new Date(2017, 0, 26, 13, 26, 4, 320), false, false, null);
     assert.equal(range.getMillisecondsPerPixel(), 1, "one second over 1000 pixels");
   });