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65 lines
1.5 KiB
65 lines
1.5 KiB
var assert = require('assert'),
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moment = require('moment'),
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vis = require('../vis.js'),
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DataSet = vis.DataSet,
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DataView = vis.DataView;
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var groups = new DataSet();
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// add items with different groups
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groups.add([
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{id: 1, content: 'Item 1', group: 1},
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{id: 2, content: 'Item 2', group: 2},
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{id: 3, content: 'Item 3', group: 2},
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{id: 4, content: 'Item 4', group: 1},
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{id: 5, content: 'Item 5', group: 3}
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]);
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var group2 = new DataView(groups, {
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filter: function (item) {
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return item.group == 2;
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}
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});
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// test getting the filtered data
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assert.deepEqual(group2.get(), [
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{id: 2, content: 'Item 2', group: 2},
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{id: 3, content: 'Item 3', group: 2}
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]);
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// test filtering the view contents
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assert.deepEqual(group2.get({
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filter: function (item) {
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return item.id > 2;
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}
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}), [
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{id: 3, content: 'Item 3', group: 2}
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]);
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// test event subscription
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var groupsTriggerCount = 0;
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groups.subscribe('*', function () {
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groupsTriggerCount++;
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});
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var group2TriggerCount = 0;
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group2.subscribe('*', function () {
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group2TriggerCount++;
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});
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groups.update({id:2, content: 'Item 2 (changed)'});
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assert.equal(groupsTriggerCount, 1);
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assert.equal(group2TriggerCount, 1);
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groups.update({id:5, content: 'Item 5 (changed)'});
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assert.equal(groupsTriggerCount, 2);
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assert.equal(group2TriggerCount, 1);
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// detach the view from groups
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group2.setData(null);
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assert.equal(groupsTriggerCount, 2);
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assert.equal(group2TriggerCount, 2);
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groups.update({id:2, content: 'Item 2 (changed again)'});
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assert.equal(groupsTriggerCount, 3);
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assert.equal(group2TriggerCount, 2);
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