var vows = require(“vows”),

load = require("../load"),
assert = require("../assert");

var suite = vows.describe(“d3.interpolateObject”);

suite.addBatch({

"interpolateObject": {
  topic: load("interpolate/object").expression("d3.interpolateObject"),
  "interpolates defined properties": function(interpolate) {
    assert.deepEqual(interpolate({a: 2, b: 12}, {a: 4, b: 24})(.5), {a: 3, b: 18});
  },
  "interpolates inherited properties": function(interpolate) {
    function a(a) { this.a = a; }
    a.prototype.b = 12;
    assert.deepEqual(interpolate(new a(2), new a(4))(.5), {a: 3, b: 12});
  },
  "interpolates color properties as rgb": function(interpolate) {
    assert.deepEqual(interpolate({background: "red"}, {background: "green"})(.5), {background: d3.rgb(128, 64, 0)});
    assert.deepEqual(interpolate({fill: "red"}, {fill: "green"})(.5), {fill: d3.rgb(128, 64, 0)});
    assert.deepEqual(interpolate({stroke: "red"}, {stroke: "green"})(.5), {stroke: d3.rgb(128, 64, 0)});
    assert.deepEqual(interpolate({color: "red"}, {color: "green"})(.5), {color: d3.rgb(128, 64, 0)});
  },
  "interpolates nested objects and arrays": function(interpolate) {
    assert.deepEqual(interpolate({foo: [2, 12]}, {foo: [4, 24]})(.5), {foo: [3, 18]});
    assert.deepEqual(interpolate({foo: {bar: [2, 12]}}, {foo: {bar: [4, 24]}})(.5), {foo: {bar: [3, 18]}});
  },
  "merges non-shared properties": function(interpolate) {
    assert.deepEqual(interpolate({foo: 2}, {foo: 4, bar: 12})(.5), {foo: 3, bar: 12});
    assert.deepEqual(interpolate({foo: 2, bar: 12}, {foo: 4})(.5), {foo: 3, bar: 12});
  }
}

});

suite.export(module);