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Contents
require("../env");
require("../../d3");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.rebind");
suite.addBatch({
"rebind": {
topic: function() {
return d3.rebind;
},
"bound function uses source as context": function(rebind) {
var a = {}, b = {foo: function() { that = this; }}, that;
rebind(a, b, "foo");
assert.strictEqual((a.foo(), that), b);
assert.strictEqual((a.foo.call({}), that), b);
},
"bound function receives any arguments": function(rebind) {
var a = {}, b = {foo: function() { those = Array.prototype.slice.call(arguments); }}, those;
rebind(a, b, "foo");
assert.deepEqual((a.foo(), those), []);
assert.deepEqual((a.foo(1), those), [1]);
assert.deepEqual((a.foo(null), those), [null]);
assert.deepEqual((a.foo(b, b, 1), those), [b, b, 1]);
},
"bound function returns object if arguments": function(rebind) {
var a = {}, b = {foo: function() {}};
rebind(a, b, "foo");
assert.strictEqual(a.foo(1), a);
assert.strictEqual(a.foo(1, 2, 3), a);
},
"bound function returns return value if no arguments": function(rebind) {
var a = {}, b = {foo: function() { return that; }}, that = {};
rebind(a, b, "foo");
assert.strictEqual(a.foo(), that);
},
"can bind multiple methods": function(rebind) {
var a = {}, b = {foo: function() { return 1; }, bar: function() { return 2; }};
rebind(a, b, "foo", "bar");
assert.strictEqual(a.foo(), 1);
assert.strictEqual(a.bar(), 2);
},
"returns the target object": function(rebind) {
var a = {}, b = {foo: function() { return that; }}, that = {};
assert.strictEqual(rebind(a, b, "foo"), a);
}
}
});
suite.export(module);
Version data entries
25 entries across 25 versions & 1 rubygems