@spalger/kibana/src/ui/public/vislib/__tests__/visualizations/pie_chart.js

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

var d3 = require('d3');
var angular = require('angular');
var expect = require('expect.js');
var ngMock = require('ngMock');
var _ = require('lodash');
var $ = require('jquery');
var fixtures = require('fixtures/fake_hierarchical_data');

var rowAgg = [
  { type: 'avg', schema: 'metric', params: { field: 'bytes' } },
  { type: 'terms', schema: 'split', params: { field: 'extension', rows: true }},
  { type: 'terms', schema: 'segment', params: { field: 'machine.os' }},
  { type: 'terms', schema: 'segment', params: { field: 'geo.src' }}
];

var colAgg = [
  { type: 'avg', schema: 'metric', params: { field: 'bytes' } },
  { type: 'terms', schema: 'split', params: { field: 'extension', row: false }},
  { type: 'terms', schema: 'segment', params: { field: 'machine.os' }},
  { type: 'terms', schema: 'segment', params: { field: 'geo.src' }}
];

var sliceAgg = [
  { type: 'avg', schema: 'metric', params: { field: 'bytes' } },
  { type: 'terms', schema: 'segment', params: { field: 'machine.os' }},
  { type: 'terms', schema: 'segment', params: { field: 'geo.src' }}
];

var aggArray = [
  rowAgg,
  colAgg,
  sliceAgg
];

var names = [
  'rows',
  'columns',
  'slices'
];

var sizes = [
  0,
  5,
  15,
  30,
  60,
  120
];

describe('No global chart settings', function () {
  var visLibParams1 = {
    el: '<div class=chart1></div>',
    type: 'pie',
    addLegend: true,
    addTooltip: true
  };
  var visLibParams2 = {
    el: '<div class=chart2></div>',
    type: 'pie',
    addLegend: true,
    addTooltip: true
  };
  var chart1;
  var chart2;
  var Vis;
  var indexPattern;
  var buildHierarchicalData;
  var data1;
  var data2;

  beforeEach(ngMock.module('kibana'));
  beforeEach(ngMock.inject(function (Private) {
    chart1 = Private(require('fixtures/vislib/_vis_fixture'))(visLibParams1);
    chart2 = Private(require('fixtures/vislib/_vis_fixture'))(visLibParams2);
    Vis = Private(require('ui/Vis'));
    indexPattern = Private(require('fixtures/stubbed_logstash_index_pattern'));
    buildHierarchicalData = Private(require('ui/agg_response/hierarchical/build_hierarchical_data'));

    var id1 = 1;
    var id2 = 1;
    var stubVis1 = new Vis(indexPattern, {
      type: 'pie',
      aggs: rowAgg
    });
    var stubVis2 = new Vis(indexPattern, {
      type: 'pie',
      aggs: colAgg
    });

    // We need to set the aggs to a known value.
    _.each(stubVis1.aggs, function (agg) {
      agg.id = 'agg_' + id1++;
    });
    _.each(stubVis2.aggs, function (agg) {
      agg.id = 'agg_' + id2++;
    });

    data1 = buildHierarchicalData(stubVis1, fixtures.threeTermBuckets);
    data2 = buildHierarchicalData(stubVis2, fixtures.threeTermBuckets);

    chart1.render(data1);
    chart2.render(data2);
  }));

  afterEach(function () {
    chart1 = null;
    chart2 = null;
  });

  it('should render chart titles for all charts', function () {
    expect($(chart1.el).find('.y-axis-chart-title').length).to.be(1);
    expect($(chart2.el).find('.x-axis-chart-title').length).to.be(1);
  });

  describe('_validatePieData method', function () {
    var allZeros = [
      { slices: { children: [] } },
      { slices: { children: [] } },
      { slices: { children: [] } }
    ];

    var someZeros = [
      { slices: { children: [{}] } },
      { slices: { children: [{}] } },
      { slices: { children: [] } }
    ];

    var noZeros = [
      { slices: { children: [{}] } },
      { slices: { children: [{}] } },
      { slices: { children: [{}] } }
    ];

    it('should throw an error when all charts contain zeros', function () {
      expect(function () {
        chart1.ChartClass.prototype._validatePieData(allZeros);
      }).to.throwError();
    });

    it('should not throw an error when only some or no charts contain zeros', function () {
      expect(function () {
        chart1.ChartClass.prototype._validatePieData(someZeros);
      }).to.not.throwError();
      expect(function () {
        chart1.ChartClass.prototype._validatePieData(noZeros);
      }).to.not.throwError();
    });
  });
});

aggArray.forEach(function (dataAgg, i) {
  describe('Vislib PieChart Class Test Suite for ' + names[i] + ' data', function () {
    var visLibParams = {
      type: 'pie',
      addLegend: true,
      addTooltip: true
    };
    var vis;
    var Vis;
    var indexPattern;
    var buildHierarchicalData;
    var data;

    beforeEach(ngMock.module('kibana'));
    beforeEach(ngMock.inject(function (Private) {
      vis = Private(require('fixtures/vislib/_vis_fixture'))(visLibParams);
      Vis = Private(require('ui/Vis'));
      indexPattern = Private(require('fixtures/stubbed_logstash_index_pattern'));
      buildHierarchicalData = Private(require('ui/agg_response/hierarchical/build_hierarchical_data'));

      var id = 1;
      var stubVis = new Vis(indexPattern, {
        type: 'pie',
        aggs: dataAgg
      });

      // We need to set the aggs to a known value.
      _.each(stubVis.aggs, function (agg) { agg.id = 'agg_' + id++; });

      data = buildHierarchicalData(stubVis, fixtures.threeTermBuckets);

      vis.render(data);
    }));

    afterEach(function () {
      $(vis.el).remove();
      vis = null;
    });

    describe('addPathEvents method', function () {
      var path;
      var d3selectedPath;
      var onClick;
      var onMouseOver;

      beforeEach(function () {
        vis.handler.charts.forEach(function (chart) {
          path = $(chart.chartEl).find('path')[0];
          d3selectedPath = d3.select(path)[0][0];

          // d3 instance of click and hover
          onClick = (!!d3selectedPath.__onclick);
          onMouseOver = (!!d3selectedPath.__onmouseover);
        });
      });

      it('should attach a click event', function () {
        vis.handler.charts.forEach(function () {
          expect(onClick).to.be(true);
        });
      });

      it('should attach a hover event', function () {
        vis.handler.charts.forEach(function () {
          expect(onMouseOver).to.be(true);
        });
      });
    });

    describe('addPath method', function () {
      var width;
      var height;
      var svg;
      var slices;

      beforeEach(ngMock.inject(function () {
        vis.handler.charts.forEach(function (chart) {
          width = $(chart.chartEl).width();
          height = $(chart.chartEl).height();
          svg = d3.select($(chart.chartEl).find('svg')[0]);
          slices = chart.chartData.slices;
        });
      }));

      it('should return an SVG object', function () {
        vis.handler.charts.forEach(function (chart) {
          expect(_.isObject(chart.addPath(width, height, svg, slices))).to.be(true);
        });
      });

      it('should draw path elements', function () {
        vis.handler.charts.forEach(function (chart) {

          // test whether path elements are drawn
          expect($(chart.chartEl).find('path').length).to.be.greaterThan(0);
        });
      });
    });

    describe('draw method', function () {
      it('should return a function', function () {
        vis.handler.charts.forEach(function (chart) {
          expect(_.isFunction(chart.draw())).to.be(true);
        });
      });
    });

    sizes.forEach(function (size) {
      describe('containerTooSmall error', function () {
        it('should throw an error', function () {
          // 20px is the minimum height and width
          vis.handler.charts.forEach(function (chart) {
            $(chart.chartEl).height(size);
            $(chart.chartEl).width(size);

            if (size < 20) {
              expect(function () {
                chart.render();
              }).to.throwError();
            }
          });
        });

        it('should not throw an error', function () {
          vis.handler.charts.forEach(function (chart) {
            $(chart.chartEl).height(size);
            $(chart.chartEl).width(size);

            if (size > 20) {
              expect(function () {
                chart.render();
              }).to.not.throwError();
            }
          });
        });
      });
    });

  });
});