var vows = require(“vows”),

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

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

suite.addBatch({

"interpolateTransform": {
  topic: load("interpolate/transform").document(),
  "interpolation of a decomposed transform": {
    topic: function(d3) {
      // Use a custom d3.transform to parse a decomposed transform, since
      // JSDOM doesn't support consolidating SVG transform strings.
      d3.transform = function(s) {
        var m = s.split(/,/g).map(Number);
        return {
          translate: [m[0], m[1]],
          rotate: m[2],
          skew: m[3],
          scale: [m[4], m[5]]
        };
      };
      return d3;
    },
    "identity": function(d3) {
      assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [0, 0, 0, 0, 1, 1] + "")(.4), "");
    },
    "translate": {
      "x": function(d3) {
        assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [10, 0, 0, 0, 1, 1] + "")(.4), "translate(4,0)");
      },
      "y": function(d3) {
        assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [0, 10, 0, 0, 1, 1] + "")(.4), "translate(0,4)");
      },
      "x and y": function(d3) {
        assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [1, 10, 0, 0, 1, 1] + "")(.4), "translate(0.4,4)");
      }
    },
    "rotate": {
      "simple": function(d3) {
        assert.strictEqual(d3.interpolateTransform([0, 0, -10, 0, 1, 1] + "", [0, 0, 30, 0, 1, 1] + "")(.4), "rotate(6)");
      },
      "with constant translate": function(d3) {
        assert.strictEqual(d3.interpolateTransform([5, 6, -10, 0, 1, 1] + "", [5, 6, 30, 0, 1, 1] + "")(.4), "translate(5,6)rotate(6)");
      }
    },
    "skew": function(d3) {
      assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [0, 0, 0, 40, 1, 1] + "")(.4), "skewX(16)");
    },
    "scale": function(d3) {
      assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [0, 0, 0, 0, 10, 1] + "")(.5), "scale(5.5,1)");
    },
    "translate and rotate": function(d3) {
      assert.strictEqual(d3.interpolateTransform([0, 0, 0, 0, 1, 1] + "", [100, 0, 90, 0, 1, 1] + "")(.5), "translate(50,0)rotate(45)");
    }
  }
}

});

suite.export(module);