var vows = require(“vows”),
_ = require("../../"), load = require("../load"), assert = require("../assert");
var suite = vows.describe(“d3.svg.brush”);
suite.addBatch({
"brush": { topic: load("svg/brush").expression("d3.svg.brush").document(), "x": { "defaults to null": function(brush) { assert.isNull(brush().x()); } }, "y": { "defaults to null": function(brush) { assert.isNull(brush().y()); } }, "clamp": { "returns null when no scales are attached": function(brush) { assert.isNull(brush().clamp()); }, "returns a single boolean if only x is defined": function(brush) { var b = brush().x(_.scale.linear()); assert.isTrue(b.clamp()); }, "returns a single boolean if only y is defined": function(brush) { var b = brush().y(_.scale.linear()); assert.isTrue(b.clamp()); }, "returns one-dimensional array if both x and y are defined": function(brush) { var b = brush().x(_.scale.linear()).y(_.scale.linear()); assert.deepEqual(b.clamp(), [true, true]); }, "takes a single boolean if only x is defined": function(brush) { var b = brush().x(_.scale.linear()).clamp(false); assert.isFalse(b.clamp()); }, "takes a single boolean if only y is defined": function(brush) { var b = brush().y(_.scale.linear()).clamp(false); assert.isFalse(b.clamp()); }, "takes a one-dimensional array if both x and y are defined": function(brush) { var b = brush().x(_.scale.linear()).y(_.scale.linear()).clamp([false, true]); assert.deepEqual(b.clamp(), [false, true]); b.clamp([true, false]); assert.deepEqual(b.clamp(), [true, false]); } }, "extent": { "returns null when no scales are attached": function(brush) { assert.isNull(brush().extent()); }, "returns a one-dimensional array if only x is defined": function(brush) { var b = brush().x(_.scale.linear()); assert.deepEqual(b.extent(), [0, 0]); }, "takes a one-dimensional array if only x is defined": function(brush) { var b = brush().x(_.scale.linear()).extent([0.1, 0.4]); assert.deepEqual(b.extent(), [0.1, 0.4]); }, "returns a one-dimensional array if only y is defined": function(brush) { var b = brush().y(_.scale.linear()); assert.deepEqual(b.extent(), [0, 0]); }, "takes a one-dimensional array if only y is defined": function(brush) { var b = brush().y(_.scale.linear()).extent([0.1, 0.4]); assert.deepEqual(b.extent(), [0.1, 0.4]); }, "returns a two-dimensional array if x and y are defined": function(brush) { var b = brush().x(_.scale.linear()).y(_.scale.linear()); assert.deepEqual(b.extent(), [[0, 0], [0, 0]]); }, "takes a two-dimensional array if x and y are defined": function(brush) { var b = brush().x(_.scale.linear()).y(_.scale.linear()).extent([[0.1, 0.2], [0.3, 0.4]]); assert.deepEqual(b.extent(), [[0.1, 0.2], [0.3, 0.4]]); }, "preserves the set extent exactly": function(brush) { var lo = new Number(0.1), hi = new Number(0.3), b = brush().x(_.scale.linear()).extent([lo, hi]), extent = b.extent(); assert.strictEqual(extent[0], lo); assert.strictEqual(extent[1], hi); } } }
});
suite.export(module);