71 строка
2.0 KiB
JavaScript
71 строка
2.0 KiB
JavaScript
require("../env");
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var vows = require("vows"),
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assert = require("assert");
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var suite = vows.describe("selection.call");
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suite.addBatch({
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"select(body)": {
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topic: function() {
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return d3.select("body").html("");
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},
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"calls the function once": function(body) {
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var count = 0;
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body.call(function() { ++count; });
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assert.equal(count, 1);
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},
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"passes any optional arguments": function(body) {
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var abc;
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body.call(function(selection, a, b, c) { abc = [a, b, c]; }, "a", "b", "c");
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assert.deepEqual(abc, ["a", "b", "c"]);
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},
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"passes the selection as the first argument": function(body) {
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var s;
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body.call(function(selection) { s = selection; });
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assert.isTrue(s === body);
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},
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"uses the selection as the context": function(body) {
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var s;
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body.call(function() { s = this; });
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assert.isTrue(s === body);
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},
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"returns the current selection": function(body) {
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assert.isTrue(body.call(function() {}) === body);
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}
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}
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});
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suite.addBatch({
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"selectAll(div)": {
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topic: function() {
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return d3.select("body").html("").selectAll("div").data(d3.range(2)).enter().append("div");
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},
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"calls the function once": function(div) {
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var count = 0;
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div.call(function() { ++count; });
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assert.equal(count, 1);
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},
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"passes any optional arguments": function(div) {
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var abc;
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div.call(function(selection, a, b, c) { abc = [a, b, c]; }, "a", "b", "c");
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assert.deepEqual(abc, ["a", "b", "c"]);
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},
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"passes the selection as the first argument": function(div) {
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var s;
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div.call(function(selection) { s = selection; });
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assert.isTrue(s === div);
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},
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"uses the selection as the context": function(div) {
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var s;
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div.call(function() { s = this; });
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assert.isTrue(s === div);
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},
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"returns the current selection": function(div) {
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assert.isTrue(div.call(function() {}) === div);
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}
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}
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});
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suite.export(module);
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