1 require("../env");

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

     3 

     4 var vows = require("vows"),

     5     assert = require("assert");

     6 

     7 var suite = vows.describe("d3.rebind");

     8 

     9 suite.addBatch({

    10   "rebind": {

    11     topic: function() {

    12       return d3.rebind;

    13     },

    14     "bound function uses object as context": function(rebind) {

    15       var a = {}, that, f = rebind(a, function() { that = this; });

    16       assert.strictEqual((f(), that), a);

    17       assert.strictEqual((f.call({}), that), a);

    18     },

    19     "bound function receives any arguments": function(rebind) {

    20       var a = [], b = {}, f = rebind(a, function() { a = Array.prototype.slice.call(arguments); });

    21       assert.deepEqual((f(), a), []);

    22       assert.deepEqual((f(1), a), [1]);

    23       assert.deepEqual((f(null), a), [null]);

    24       assert.deepEqual((f(b, b, 1), a), [b, b, 1]);

    25     },

    26     "bound function returns object if arguments": function(rebind) {

    27       var a = {}, f = rebind(a, function() {});

    28       assert.strictEqual(f(1), a);

    29       assert.strictEqual(f(1, 2, 3), a);

    30     },

    31     "bound function returns return value if no arguments": function(rebind) {

    32       var a = {}, f = rebind({}, function() { return a; });

    33       assert.strictEqual(f(), a);

    34     }

    35   }

    36 });

    37 

    38 suite.export(module);