core-export.js

var expect = require('chai').expect;
var cytoscape = require('../src/test.js', cytoscape);

describe('Core export', function(){

  var cy;

  // test setup
  beforeEach(function(done){
    cytoscape({
      styleEnabled: true,

      elements: {
        nodes: [
            { data: { id: "n1", foo: "bar" }, classes: "odd one" },
        ]
      },

      ready: function(){
        cy = this;

        done();
      }
    });
  });

  afterEach(function(){
    cy.destroy();
  });

  it('has all properties defined', function(){
    var json = cy.json();

    expect( json ).to.have.property('elements');
    expect( json ).to.have.property('renderer');
    expect( json ).to.have.property('minZoom').that.equals( cy.minZoom() );
    expect( json ).to.have.property('maxZoom').that.equals( cy.maxZoom() );
    expect( json ).to.have.property('zoomingEnabled').that.equals( cy.zoomingEnabled() );
    expect( json ).to.have.property('userZoomingEnabled').that.equals( cy.userZoomingEnabled() );
    expect( json ).to.have.property('panningEnabled').that.equals( cy.panningEnabled() );
    expect( json ).to.have.property('userPanningEnabled').that.equals( cy.userPanningEnabled() );
    expect( json ).to.have.property('boxSelectionEnabled').that.equals( cy.boxSelectionEnabled() );
    expect( json ).to.have.property('zoom').that.equals( cy.zoom() );
    expect( json ).to.have.property('pan').that.deep.equals( cy.pan() );
    expect( json ).to.have.property('style');

    // these are optional so not important to check
    // expect( json ).to.have.property('hideEdgesOnViewport');
    // expect( json ).to.have.property('hideLabelsOnViewport');
    // expect( json ).to.have.property('textureOnViewport');
    // expect( json ).to.have.property('wheelSensitivity');
    // expect( json ).to.have.property('motionBlur');

  });

  var itExportsSelector = function( sel ){
    it('exports `' + sel + '` selector in style', function(){
      cy.style([
        {
          selector: sel,
          style: {}
        },
      ]);

      expect( cy.json().style[0].selector ).to.equal( sel );
    });
  };

  itExportsSelector('#foo');
  itExportsSelector('.foo');
  itExportsSelector('[foo]');
  itExportsSelector('[^foo]');
  itExportsSelector('[?foo]');
  itExportsSelector('[!foo]');
  itExportsSelector('[foo = 1]');
  itExportsSelector('[foo = 1.23]');
  itExportsSelector('[foo != 1]');
  itExportsSelector('[foo > 1]');
  itExportsSelector('[foo >= 1]');
  itExportsSelector('[foo < 1]');
  itExportsSelector('[foo <= 1]');
  itExportsSelector('[foo = "bar"]');
  itExportsSelector('[foo != "bar"]');
  itExportsSelector('[foo *= "bar"]');
  itExportsSelector('[foo ^= "bar"]');
  itExportsSelector('[foo $= "bar"]');
  itExportsSelector('[foo @= "bar"]');
  itExportsSelector('[foo @!= "bar"]');
  itExportsSelector('[foo @*= "bar"]');
  itExportsSelector('[foo @^= "bar"]');
  itExportsSelector('[foo @$= "bar"]');
  itExportsSelector('[[degree > 2]]');
  itExportsSelector('[[degree < 2]]');
  itExportsSelector('[[degree = 2]]');
  itExportsSelector('[[degree != 2]]');
  itExportsSelector('node > node');
  itExportsSelector('node node');
  itExportsSelector('$node > node');
  itExportsSelector('node > $node');
  itExportsSelector('node > node');
  itExportsSelector(':selected');
  itExportsSelector('$node:selected > node[?foo][bar > 2][baz *= "bat"][[degree > 1]]:locked');

  it('png export fails on headless instance', function(){
    var exportImage = function(){
      cy.png();
    };

    expect(exportImage).to.throw;
  });

  it('jpg export fails on headless instance', function(){
    var exportImage = function(){
      cy.jpg();
    };

    expect(exportImage).to.throw;
  });
});