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classed-test.js
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var vows = require("vows"),
load = require("../load"),
assert = require("../assert");
var suite = vows.describe("selection.classed");
suite.addBatch({
"select(body)": {
topic: load("selection/classed").document(),
"on a simple page": {
topic: function(d3) {
return d3.select("body");
},
"adds a missing class as true": function(body) {
body.attr("class", null);
body.classed("foo", true);
assert.equal(body.node().className, "foo");
body.classed("bar", true);
assert.equal(body.node().className, "foo bar");
},
"removes an existing class as false": function(body) {
body.attr("class", "bar foo");
body.classed("foo", false);
assert.equal(body.node().className, "bar");
body.classed("bar", false);
assert.equal(body.node().className, "");
},
"preserves an existing class as true": function(body) {
body.attr("class", "bar foo");
body.classed("foo", true);
assert.equal(body.node().className, "bar foo");
body.classed("bar", true);
assert.equal(body.node().className, "bar foo");
},
"preserves a missing class as false": function(body) {
body.attr("class", "baz");
body.classed("foo", false);
assert.equal(body.node().className, "baz");
body.attr("class", null);
body.classed("bar", false);
assert.equal(body.node().className, "");
},
"gets an existing class": function(body) {
body.attr("class", " foo\tbar baz");
assert.isTrue(body.classed("foo"));
assert.isTrue(body.classed("bar"));
assert.isTrue(body.classed("baz"));
},
"does not get a missing class": function(body) {
body.attr("class", " foo\tbar baz");
assert.isFalse(body.classed("foob"));
assert.isFalse(body.classed("bare"));
assert.isFalse(body.classed("rbaz"));
},
"accepts a name with whitespace, collapsing it": function(body) {
body.attr("class", null);
body.classed(" foo\t", true);
assert.equal(body.node().className, "foo");
body.classed("\tfoo ", false);
assert.equal(body.node().className, "");
},
"accepts a name with multiple classes separated by whitespace": function(body) {
body.attr("class", null);
body.classed("foo bar", true);
assert.equal(body.node().className, "foo bar");
assert.isTrue(body.classed("foo bar"));
assert.isTrue(body.classed("bar foo"));
assert.isFalse(body.classed("foo bar baz"));
assert.isFalse(body.classed("foob bar"));
body.classed("bar foo", false);
assert.equal(body.node().className, "");
},
"accepts a silly class name with unsafe characters": function(body) {
body.attr("class", null);
body.classed("foo.bar", true);
assert.equal(body.node().className, "foo.bar");
assert.isTrue(body.classed("foo.bar"));
assert.isFalse(body.classed("foo"));
assert.isFalse(body.classed("bar"));
body.classed("bar.foo", false);
assert.equal(body.node().className, "foo.bar");
body.classed("foo.bar", false);
assert.equal(body.node().className, "");
},
"accepts a name with duplicate classes, ignoring them": function(body) {
body.attr("class", null);
body.classed(" foo\tfoo ", true);
assert.equal(body.node().className, "foo");
body.classed("\tfoo foo ", false);
assert.equal(body.node().className, "");
},
"accepts an empty name, doing nothing or returning true": function(body) {
body.attr("class", null);
body.classed("", true);
assert.equal(body.node().className, "");
assert.isTrue(body.classed(""));
body.classed(" \t ", true);
assert.equal(body.node().className, "");
assert.isTrue(body.classed(""));
body.classed("", false);
assert.equal(body.node().className, "");
assert.isTrue(body.classed(""));
},
"coerces name to a string": function(body) {
body.attr("class", null);
body.classed(undefined, true);
assert.equal(body.node().className, "undefined");
body.classed(null, true);
assert.equal(body.node().className, "undefined null");
body.classed({toString: function() { return "foo bar"; }}, true);
assert.equal(body.node().className, "undefined null foo bar");
},
"accepts a value function returning true or false": function(body) {
body.attr("class", null);
body.classed("foo", function() { return true; });
assert.equal(body.node().className, "foo");
body.classed("foo bar", function() { return true; });
assert.equal(body.node().className, "foo bar");
body.classed("foo", function() { return false; });
assert.equal(body.node().className, "bar");
},
"accepts a name object containing true or false": function(body) {
body.attr("class", null);
body.classed({foo: true});
assert.equal(body.node().className, "foo");
body.classed({bar: true, foo: false});
assert.equal(body.node().className, "bar");
},
"accepts a name object containing a function returning true or false": function(body) {
body.attr("class", null);
body.classed({foo: function() { return true; }});
assert.equal(body.node().className, "foo");
},
"accepts a name object containing a mix of functions and non-functions": function(body) {
body.attr("class", "foo");
body.classed({foo: false, bar: function() { return true; }});
assert.equal(body.node().className, "bar");
},
"the value may be truthy or falsey": function(body) {
body.attr("class", "foo");
body.classed({foo: null, bar: function() { return 1; }});
assert.equal(body.node().className, "bar");
},
"keys in the name object may contain whitespace": function(body) {
body.attr("class", null);
body.classed({" foo\t": function() { return true; }});
assert.equal(body.node().className, "foo");
body.attr("class", null);
},
"keys in the name object may reference multiple classes": function(body) {
body.attr("class", null);
body.classed({"foo bar": function() { return true; }});
assert.equal(body.node().className, "foo bar");
body.attr("class", null);
},
"keys in the name object may contain duplicates": function(body) {
body.attr("class", null);
body.classed({"foo foo": function() { return true; }});
assert.equal(body.node().className, "foo");
body.attr("class", null);
},
"value functions are only evaluated once when used for multiple classes": function(body) {
var count = 0;
body.attr("class", null);
body.classed({"foo bar": function() { return ++count; }});
assert.equal(body.node().className, "foo bar");
assert.equal(count, 1);
},
"returns the current selection": function(body) {
assert.isTrue(body.classed("foo", true) === body);
}
}
}
});
suite.addBatch({
"selectAll(div)": {
topic: load("selection/classed").document(),
"on a simple page": {
topic: function(d3) {
return d3.select("body").selectAll("div").data([0, 1]).enter().append("div");
},
"adds a missing class as true": function(div) {
div.attr("class", null);
div.classed("foo", true);
assert.equal(div[0][0].className, "foo");
assert.equal(div[0][1].className, "foo");
div.classed("bar", true);
assert.equal(div[0][0].className, "foo bar");
assert.equal(div[0][1].className, "foo bar");
},
"adds a missing class as a function": function(div) {
div.data([0, 1]).attr("class", null);
div.classed("foo", function(d, i) { return d === 0; });
assert.equal(div[0][0].className, "foo");
assert.equal(div[0][1].className, "");
div.classed("bar", function(d, i) { return i === 1; });
assert.equal(div[0][0].className, "foo");
assert.equal(div[0][1].className, "bar");
},
"removes an existing class as false": function(div) {
div.attr("class", "bar foo");
div.classed("foo", false);
assert.equal(div[0][0].className, "bar");
assert.equal(div[0][1].className, "bar");
div.classed("bar", false);
assert.equal(div[0][0].className, "");
assert.equal(div[0][1].className, "");
},
"removes an existing class as a function": function(div) {
div.data([0, 1]).attr("class", "bar foo");
div.classed("foo", function(d, i) { return d === 0; });
assert.equal(div[0][0].className, "bar foo");
assert.equal(div[0][1].className, "bar");
div.classed("bar", function(d, i) { return i === 1; });
assert.equal(div[0][0].className, "foo");
assert.equal(div[0][1].className, "bar");
div.classed("foo", function() { return false; });
assert.equal(div[0][0].className, "");
assert.equal(div[0][1].className, "bar");
div.classed("bar", function() { return false; });
assert.equal(div[0][0].className, "");
assert.equal(div[0][1].className, "");
},
"preserves an existing class as true": function(div) {
div.attr("class", "bar foo");
div.classed("foo", true);
assert.equal(div[0][0].className, "bar foo");
assert.equal(div[0][1].className, "bar foo");
div.classed("bar", true);
assert.equal(div[0][0].className, "bar foo");
assert.equal(div[0][1].className, "bar foo");
},
"preserves an existing class as a function": function(div) {
div.attr("class", "bar foo");
div.classed("foo", function() { return true; });
assert.equal(div[0][0].className, "bar foo");
assert.equal(div[0][1].className, "bar foo");
div.classed("bar", function() { return true; });
assert.equal(div[0][0].className, "bar foo");
assert.equal(div[0][1].className, "bar foo");
},
"preserves a missing class as false": function(div) {
div.attr("class", "baz");
div.classed("foo", false);
assert.equal(div[0][0].className, "baz");
assert.equal(div[0][1].className, "baz");
div.attr("class", null);
div.classed("bar", false);
assert.equal(div[0][0].className, "");
assert.equal(div[0][1].className, "");
},
"preserves a missing class as a function": function(div) {
div.attr("class", "baz");
div.classed("foo", function() { return false; });
assert.equal(div[0][0].className, "baz");
assert.equal(div[0][1].className, "baz");
div.attr("class", null);
div.classed("bar", function() { return false; });
assert.equal(div[0][0].className, "");
assert.equal(div[0][1].className, "");
},
"gets an existing class": function(div) {
div[0][0].className = " foo\tbar baz";
assert.isTrue(div.classed("foo"));
assert.isTrue(div.classed("bar"));
assert.isTrue(div.classed("baz"));
},
"does not get a missing class": function(div) {
div[0][0].className = " foo\tbar baz";
assert.isFalse(div.classed("foob"));
assert.isFalse(div.classed("bare"));
assert.isFalse(div.classed("rbaz"));
},
"returns the current selection": function(div) {
assert.isTrue(div.classed("foo", true) === div);
},
"ignores null nodes": function(div) {
var node = div[0][1];
div.attr("class", null);
div[0][1] = null;
div.classed("foo", true);
assert.equal(div[0][0].className, "foo");
assert.equal(node.className, "");
}
}
}
});
suite.export(module);