63 строки
2.6 KiB
JavaScript
63 строки
2.6 KiB
JavaScript
var vows = require("vows"),
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load = require("../load"),
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assert = require("../assert");
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var suite = vows.describe("d3.svg.diagonal");
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suite.addBatch({
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"diagonal": {
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topic: load("svg/diagonal").expression("d3.svg.diagonal"),
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"source defaults to a function accessor": function(diagonal) {
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var d = diagonal().target({x:5, y:5});
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assert.pathEqual(d({source: {x:1, y:1}}), "M1,1C1,3 5,3 5,5");
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assert.pathEqual(d({source: {x:5, y:1}}), "M5,1C5,3 5,3 5,5");
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},
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"source can be defined as a constant": function(diagonal) {
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var d = diagonal().target({x:5, y:5});
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assert.pathEqual(d.source({x:1, y:1})(), "M1,1C1,3 5,3 5,5");
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assert.pathEqual(d.source({x:5, y:1})(), "M5,1C5,3 5,3 5,5");
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},
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"source can be defined as a function of data or index": function(diagonal) {
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var d = diagonal().source(f).target({x:5, y:5}), o = {}, t = {}, dd, ii, tt;
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function f(d,i) { dd = d; ii = i; tt = this; return {x:42, y:42}; }
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assert.pathEqual(d.call(t, o, 2), "M42,42C42,23.500000 5,23.500000 5,5");
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assert.equal(dd, o, "expected data, got {actual}");
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assert.equal(ii, 2, "expected data, got {actual}");
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assert.equal(tt, t, "expected data, got {actual}");
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},
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"target defaults to a function accessor": function(diagonal) {
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var d = diagonal().source({x:1, y:1});
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assert.pathEqual(d({target: {x:5, y:5}}), "M1,1C1,3 5,3 5,5");
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assert.pathEqual(d({target: {x:5, y:1}}), "M1,1C1,1 5,1 5,1");
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},
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"target can be defined as a constant": function(diagonal) {
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var d = diagonal().source({x:1, y:1});
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assert.pathEqual(d.target({x:5, y:5})(), "M1,1C1,3 5,3 5,5");
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assert.pathEqual(d.target({x:5, y:1})(), "M1,1C1,1 5,1 5,1");
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},
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"target can be defined as a function of data or index": function(diagonal) {
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var d = diagonal().source({x:1, y:1}).target(f), o = {}, t = {}, dd, ii, tt;
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function f(d,i) { dd = d; ii = i; tt = this; return {x:42, y:42}; }
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assert.pathEqual(d.call(t, o, 2), "M1,1C1,21.500000 42,21.500000 42,42");
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assert.equal(dd, o, "expected data, got {actual}");
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assert.equal(ii, 2, "expected data, got {actual}");
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assert.equal(tt, t, "expected data, got {actual}");
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},
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"projection defaults to identity": function(diagonal) {
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var d = diagonal();
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assert.deepEqual(d.projection()({x:1, y:1}),[1, 1]);
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},
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"custom projection function can be set": function(diagonal) {
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var d = diagonal().source({x:1, y:1}).target({x:5, y:5});
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assert.pathEqual(d.projection(function(d) {
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return [d.x * 2, d.y * 2];
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})(),"M2,2C2,6 10,6 10,10");
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}
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}
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});
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suite.export(module);
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