require("../env");

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

var vows = require("vows"),

    assert = require("assert");

var suite = vows.describe("selection.style");

suite.addBatch({

  "select(body)": {

    topic: function() {

      return d3.select("body").html("");

    },

    "sets a property as a string": function(body) {

      body.style("background-color", "red");

      assert.equal(document.body.style["background-color"], "red");

    },

    "sets a property as a number": function(body) {

      body.style("opacity", .3);

      assert.equal(document.body.style["opacity"], "0.3");

    },

    "sets a property as a function": function(body) {

      body.style("background-color", function() { return "orange"; });

      assert.equal(document.body.style["background-color"], "orange");

    },

    "gets a property value": function(body) {

      document.body.style.setProperty("background-color", "yellow", "");

      assert.equal(body.style("background-color"), "yellow");

    },

    "observes the specified priority": function(body) {

      body.style("background-color", "green", "important");

      assert.equal(document.body.style.getPropertyPriority("background-color"), "important");

    },

    "removes a property as null": function(body) {

      body.style("background-color", "green").style("background-color", null);

      assert.equal(body.style("background-color"), "");

    },

    "removes a property as a function": function(body) {

      body.style("background-color", "green").style("background-color", function() { return null; });

      assert.equal(body.style("background-color"), "");

    },

    "returns the current selection": function(body) {

      assert.isTrue(body.style("background-color", "green") === body);

    }

  }

});

suite.addBatch({

  "selectAll(div)": {

    topic: function() {

      return d3.select("body").html("").selectAll("div").data(d3.range(2)).enter().append("div");

    },

    "sets a property as a string": function(div) {

      div.style("background-color", "red");

      assert.equal(div[0][0].style["background-color"], "red");

      assert.equal(div[0][1].style["background-color"], "red");

    },

    "sets a property as a number": function(div) {

      div.style("opacity", .5);

      assert.equal(div[0][0].style["opacity"], "0.5");

      assert.equal(div[0][1].style["opacity"], "0.5");

    },

    "sets a property as a function": function(div) {

      div.style("background-color", d3.interpolateRgb("orange", "yellow"));

      assert.equal(div[0][0].style["background-color"], "#ffa500");

      assert.equal(div[0][1].style["background-color"], "#ffff00");

    },

    "gets a property value": function(div) {

      div[0][0].style.setProperty("background-color", "green", "");

      assert.equal(div.style("background-color"), "green");

    },

    "observes the specified priority": function(div) {

      div.style("background-color", "blue", "important");

      assert.equal(div[0][0].style.getPropertyPriority("background-color"), "important");

      assert.equal(div[0][1].style.getPropertyPriority("background-color"), "important");

    },

    "removes a property as null": function(div) {

      div.style("background-color", "red").style("background-color", null);

      assert.equal(div[0][0].style["background-color"], "");

      assert.equal(div[0][1].style["background-color"], "");

    },

    "removes a property as a function": function(div) {

      div.style("background-color", "red").style("background-color", function() { return null; });

      assert.equal(div[0][0].style["background-color"], "");

      assert.equal(div[0][1].style["background-color"], "");

    },

    "ignores null nodes": function(div) {

      var some = d3.selectAll("div");

      some[0][1] = null;

      some.style("background-color", null).style("background-color", "red");

      assert.equal(div[0][0].style["background-color"], "red");

      assert.equal(div[0][1].style["background-color"], "");

    },

    "returns the current selection": function(div) {

      assert.isTrue(div.style("background-color", "green") === div);

    }

  }

});

suite.export(module);