var vows = require(“vows”),
load = require("../load"), assert = require("../assert");
var suite = vows.describe(“selection.call”);
suite.addBatch({
"select(body)": { topic: load("selection/call").document(), "on a simple page": { topic: function(d3) { return d3.select("body"); }, "calls the function once": function(body) { var count = 0; body.call(function() { ++count; }); assert.equal(count, 1); }, "passes any optional arguments": function(body) { var abc; body.call(function(selection, a, b, c) { abc = [a, b, c]; }, "a", "b", "c"); assert.deepEqual(abc, ["a", "b", "c"]); }, "passes the selection as the first argument": function(body) { var s; body.call(function(selection) { s = selection; }); assert.isTrue(s === body); }, "uses the selection as the context": function(body) { var s; body.call(function() { s = this; }); assert.isTrue(s === body); }, "returns the current selection": function(body) { assert.isTrue(body.call(function() {}) === body); } } }
});
suite.addBatch({
"selectAll(div)": { topic: load("selection/call").document(), "on a simple page": { topic: function(d3) { return d3.select("body").selectAll("div").data([0, 1]).enter().append("div"); }, "calls the function once": function(div) { var count = 0; div.call(function() { ++count; }); assert.equal(count, 1); }, "passes any optional arguments": function(div) { var abc; div.call(function(selection, a, b, c) { abc = [a, b, c]; }, "a", "b", "c"); assert.deepEqual(abc, ["a", "b", "c"]); }, "passes the selection as the first argument": function(div) { var s; div.call(function(selection) { s = selection; }); assert.isTrue(s === div); }, "uses the selection as the context": function(div) { var s; div.call(function() { s = this; }); assert.isTrue(s === div); }, "returns the current selection": function(div) { assert.isTrue(div.call(function() {}) === div); } } }
});
suite.export(module);