1 require("../env");

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

     3 

     4 var assert = require("assert");

     5 

     6 module.exports = {

     7   topic: function() {

     8     return d3.select("body").append("div").transition()

     9         .delay(100)

    10         .duration(150)

    11         .ease("bounce");

    12   },

    13 

    14   "inherits the delay": function(t1) {

    15     var t2 = t1.transition();

    16     assert.equal(t2[0][0].delay, 100);

    17   },

    18   "inherits the duration": function(t1) {

    19     var t2 = t1.transition();

    20     assert.equal(t2[0][0].duration, 150);

    21   },

    22   "inherits easing": function(t1) {

    23     // TODO how to test this?

    24   },

    25   "inherits the transition id": function(t1) {

    26     var t2 = t1.transition();

    27     assert.equal(t2.id, t1.id);

    28   },

    29 

    30   "while transitioning": {

    31     topic: function(t1) {

    32       var t2 = t1.transition(),

    33           cb = this.callback;

    34       t2.each("start", function() {

    35         d3.timer(function() {

    36           cb(null, t2);

    37           return true;

    38         });

    39       });

    40     },

    41     "increments the lock's reference count": function(t2) {

    42       assert.isTrue(t2[0][0].node.__transition__.count > 1);

    43     }

    44   },

    45 

    46   "after transitioning": {

    47     topic: function(t1) {

    48       var cb = this.callback;

    49       t1.each("end", function() {

    50         d3.timer(function() {

    51           cb(null, t1);

    52           return true;

    53         }, 50);

    54       });

    55     },

    56     "decrements the lock's reference count": function(t1) {

    57       assert.isFalse("__transition__" in t1[0][0].node);

    58     }

    59   }

    60 };