Checkpoint new test framework using Vows.

test/core/select-test.js

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+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.select");
+
+suite.addBatch({
+  "style": {
+    topic: function() {
+      return d3.select("body");
+    },
+    "can set a property as a string": function(body) {
+      body.style("background-color", "red");
+      assert.equal(body[0][0].style["background-color"], "red");
+    },
+    "can set a property as a number": function(body) {
+      body.style("opacity", .3);
+      assert.equal(body[0][0].style["opacity"], ".3");
+    },
+    "can set a property as a function": function(body) {
+      body.style("background-color", function() { return "orange"; });
+      assert.equal(body[0][0].style["background-color"], "orange");
+    },
+    "can get a property value": function(body) {
+      body[0][0].style.setProperty("background-color", "yellow", "");
+      assert.equal(body.style("background-color"), "yellow");
+    },
+    "observes the specified priority": function(body) {
+      body.style("background-color", "green", "important");
+      assert.equal(body[0][0].style.getPropertyPriority("background-color"), "important");
+    }
+  },
+  "attr": {
+    topic: function() {
+      return d3.select("body");
+    },
+    "can set an attribute as a string": function(body) {
+      body.attr("bgcolor", "red");
+      assert.equal(body[0][0].getAttribute("bgcolor"), "red");
+    },
+    "can set an attribute as a number": function(body) {
+      body.attr("opacity", 1);
+      assert.equal(body[0][0].getAttribute("opacity"), "1");
+    },
+    "can set an attribute as a function": function(body) {
+      body.attr("bgcolor", function() { return "orange"; });
+      assert.equal(body[0][0].getAttribute("bgcolor"), "orange");
+    },
+    "can get an attribute value": function(body) {
+      body[0][0].setAttribute("bgcolor", "yellow");
+      assert.equal(body.attr("bgcolor"), "yellow");
+    }
+  }
+});
+
+suite.export(module);

test/core/selectAll-test.js

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+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.selectAll");
+
+suite.addBatch({
+  "style": {
+    topic: function() {
+      return d3.select("body").selectAll("div").data(d3.range(2)).enter().append("div");
+    },
+    "can set a property as a string": function(div) {
+      div.style("background-color", "red");
+      assert.equal(div[0][0].style["background-color"], "red");
+      assert.equal(div[0][1].style["background-color"], "red");
+    },
+    "can set a property as a number": function(div) {
+      div.style("opacity", .5);
+      assert.equal(div[0][0].style["opacity"], ".5");
+      assert.equal(div[0][1].style["opacity"], ".5");
+    },
+    "can set a property as a function": function(div) {
+      div.style("background-color", d3.interpolateRgb("orange", "yellow"));
+      assert.equal(div[0][0].style["background-color"], "rgb(255,165,0)");
+      assert.equal(div[0][1].style["background-color"], "rgb(255,255,0)");
+    },
+    "can get a property value": function(div) {
+      div[0][0].style.setProperty("background-color", "green", "");
+      assert.equal(div.style("background-color"), "green");
+    },
+    "observes the specified priority": function(div) {
+      div.style("background-color", "blue", "important");
+      assert.equal(div[0][0].style.getPropertyPriority("background-color"), "important");
+      assert.equal(div[0][1].style.getPropertyPriority("background-color"), "important");
+    }
+  }
+});
+
+suite.addBatch({
+  "attr": {
+    topic: function() {
+      return d3.select("body").selectAll("div");
+    },
+    "can set an attribute as a string": function(div) {
+      div.attr("bgcolor", "red");
+      assert.equal(div[0][0].getAttribute("bgcolor"), "red");
+      assert.equal(div[0][1].getAttribute("bgcolor"), "red");
+    },
+    "can set an attribute as a number": function(div) {
+      div.attr("opacity", 0.4);
+      assert.equal(div[0][0].getAttribute("opacity"), "0.4");
+      assert.equal(div[0][1].getAttribute("opacity"), "0.4");
+    },
+    "can set an attribute as a function": function(div) {
+      div.attr("bgcolor", d3.interpolateRgb("brown", "steelblue"));
+      assert.equal(div[0][0].getAttribute("bgcolor"), "rgb(165,42,42)");
+      assert.equal(div[0][1].getAttribute("bgcolor"), "rgb(70,130,180)");
+    },
+    "can get an attribute value": function(div) {
+      div[0][0].setAttribute("bgcolor", "purple");
+      assert.equal(div.attr("bgcolor"), "purple");
+    }
+  }
+});
+
+suite.export(module);

test/env.js

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+document = require("jsdom").jsdom("<html><head></head><body></body></html>", null, {features: {QuerySelector: true}});
+window = document.createWindow();
+navigator = window.navigator;
+
+process.env.TZ = "America/Los_Angeles";

test/scale/linear-test.js

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+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+vows.describe("d3.scale.linear").addBatch({
+  "default instance": {
+    topic: d3.scale.linear,
+    "has the domain [0, 1]": function(x) {
+      assert.deepEqual(x.domain(), [0, 1]);
+    },
+    "has the range [0, 1]": function(x) {
+      assert.deepEqual(x.range(), [0, 1]);
+    }
+  }
+}).export(module);