1 require("../env");

     2 require("../../d3");

     3 

     4 var assert = require("assert");

     5 

     6 module.exports = {

     7   topic: function() {

     8     var cb = this.callback,

     9         t = d3.select("body").append("div").transition().remove();

    10     t.each("end", function() { cb(null, t); });

    11   },

    12   "removes the selected elements": function(transition) {

    13     assert.domEqual(transition[0][0].node.parentNode, null);

    14   },

    15 

    16   "when the element is already removed": {

    17     topic: function() {

    18       var cb = this.callback,

    19           t = d3.select("body").append("div").remove().transition().remove();

    20       t.each("end", function() { cb(null, t); });

    21     },

    22     "does nothing": function(transition) {

    23       assert.domEqual(transition[0][0].node.parentNode, null);

    24     }

    25   },

    26 

    27   // Since these tests are triggered inside the end event of the above topic,

    28   // transitions will inherit ids from the original transition. But we want to

    29   // test concurrent transitions, so we use timeouts to avoid inheritance. This

    30   // test also verifies that if multiple transitions are created at the same

    31   // time, the last transition becomes the owner.

    32 

    33   "when another transition is scheduled": {

    34     topic: function() {

    35       var cb = this.callback,

    36           s = d3.select("body").append("div");

    37       setTimeout(function() {

    38         s.transition().duration(150).remove().each("end", function() { cb(null, s); });

    39         s.transition().delay(250);

    40       }, 10);

    41     },

    42     "does nothing": function(selection) {

    43       assert.domEqual(selection[0][0].parentNode, document.body);

    44     }

    45   }

    46 };