-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathlinear-test.js
More file actions
146 lines (142 loc) · 6.16 KB
/
Copy pathlinear-test.js
File metadata and controls
146 lines (142 loc) · 6.16 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
require("../env");
require("../../d3");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.scale.linear");
suite.addBatch({
"linear": {
topic: function() {
return d3.scale.linear;
},
"has the default domain [0, 1]": function(linear) {
var x = linear();
assert.deepEqual(x.domain(), [0, 1]);
assert.inDelta(x(.5), .5, 1e-6);
},
"has the default range [0, 1]": function(linear) {
var x = linear();
assert.deepEqual(x.range(), [0, 1]);
assert.inDelta(x.invert(.5), .5, 1e-6);
},
"has the default interpolator d3.interpolate": function(linear) {
var x = linear().range(["red", "blue"]);
assert.equal(x.interpolate(), d3.interpolate);
assert.equal(x(.5), "rgb(128,0,128)");
},
"does not clamp by default": function(linear) {
var x = linear();
assert.isFalse(x.clamp());
assert.inDelta(x(-.5), -.5, 1e-6);
assert.inDelta(x(1.5), 1.5, 1e-6);
},
"maps a number to a number": function(linear) {
var x = linear().domain([1, 2]);
assert.inDelta(x(.5), -.5, 1e-6);
assert.inDelta(x(1), 0, 1e-6);
assert.inDelta(x(1.5), .5, 1e-6);
assert.inDelta(x(2), 1, 1e-6);
assert.inDelta(x(2.5), 1.5, 1e-6);
},
"coerces domain to numbers": function(linear) {
var x = linear().domain([new Date(1990, 0, 1), new Date(1991, 0, 1)]);
assert.equal(typeof x.domain()[0], "number");
assert.equal(typeof x.domain()[1], "number");
assert.inDelta(x(new Date(1989, 09, 20)), -.2, 1e-2);
assert.inDelta(x(new Date(1990, 00, 01)), 0, 1e-2);
assert.inDelta(x(new Date(1990, 02, 15)), .2, 1e-2);
assert.inDelta(x(new Date(1990, 04, 27)), .4, 1e-2);
assert.inDelta(x(new Date(1991, 00, 01)), 1, 1e-2);
assert.inDelta(x(new Date(1991, 02, 15)), 1.2, 1e-2);
var x = linear().domain(["0", "1"]);
assert.equal(typeof x.domain()[0], "number");
assert.equal(typeof x.domain()[1], "number");
assert.inDelta(x(.5), .5, 1e-6);
var x = linear().domain([new Number(0), new Number(1)]);
assert.equal(typeof x.domain()[0], "number");
assert.equal(typeof x.domain()[1], "number");
assert.inDelta(x(.5), .5, 1e-6);
},
"does not coerce range to numbers": function(linear) {
var x = linear().range(["0", "2"]);
assert.equal(typeof x.range()[0], "string");
assert.equal(typeof x.range()[1], "string");
},
"coerces range value to number on invert": function(linear) {
var x = linear().range(["0", "2"]);
assert.inDelta(x.invert("1"), .5, 1e-6);
var x = linear().range([new Date(1990, 0, 1), new Date(1991, 0, 1)]);
assert.inDelta(x.invert(new Date(1990, 6, 2, 13)), .5, 1e-6);
var x = linear().range(["#000", "#fff"]);
assert.isNaN(x.invert("#999"));
},
"can specify range values as colors": function(linear) {
var x = linear().range(["red", "blue"]);
assert.equal(x(.5), "rgb(128,0,128)");
var x = linear().range(["#ff0000", "#0000ff"]);
assert.equal(x(.5), "rgb(128,0,128)");
var x = linear().range(["#f00", "#00f"]);
assert.equal(x(.5), "rgb(128,0,128)");
var x = linear().range([d3.rgb(255,0,0), d3.hsl(240,1,.5)]);
assert.equal(x(.5), "rgb(128,0,128)");
var x = linear().range(["hsl(0,100%,50%)", "hsl(240,100%,50%)"]);
assert.equal(x(.5), "rgb(128,0,128)");
},
"can specify range values as arrays or objects": function(linear) {
var x = linear().range([{color: "red"}, {color: "blue"}]);
assert.deepEqual(x(.5), {color: "rgb(128,0,128)"});
var x = linear().range([["red"], ["blue"]]);
assert.deepEqual(x(.5), ["rgb(128,0,128)"]);
},
"can specify a custom interpolator": function(linear) {
var x = linear().range(["red", "blue"]).interpolate(d3.interpolateHsl);
assert.equal(x(.5), "#00ff00");
},
"can clamp to the domain": function(linear) {
var x = linear().clamp(true);
assert.inDelta(x(-.5), 0, 1e-6);
assert.inDelta(x(.5), .5, 1e-6);
assert.inDelta(x(1.5), 1, 1e-6);
var x = linear().domain([1, 0]).clamp(true);
assert.inDelta(x(-.5), 1, 1e-6);
assert.inDelta(x(.5), .5, 1e-6);
assert.inDelta(x(1.5), 0, 1e-6);
},
"can generate ticks of varying degree": function(linear) {
var x = linear();
assert.deepEqual(x.ticks(1).map(x.tickFormat(1)), [0, 1]);
assert.deepEqual(x.ticks(2).map(x.tickFormat(2)), [0, .5, 1]);
assert.deepEqual(x.ticks(5).map(x.tickFormat(5)), [0, .2, .4, .6, .8, 1]);
assert.deepEqual(x.ticks(10).map(x.tickFormat(10)), [0, .1, .2, .3, .4, .5, .6, .7, .8, .9, 1]);
var x = linear().domain([1, 0]);
assert.deepEqual(x.ticks(1).map(x.tickFormat(1)), [0, 1]);
assert.deepEqual(x.ticks(2).map(x.tickFormat(2)), [0, .5, 1]);
assert.deepEqual(x.ticks(5).map(x.tickFormat(5)), [0, .2, .4, .6, .8, 1]);
assert.deepEqual(x.ticks(10).map(x.tickFormat(10)), [0, .1, .2, .3, .4, .5, .6, .7, .8, .9, 1]);
},
"can nice the domain, extending it to round numbers": function(linear) {
var x = linear().domain([1.1, 10.9]).nice();
assert.deepEqual(x.domain(), [1, 11]);
var x = linear().domain([10.9, 1.1]).nice();
assert.deepEqual(x.domain(), [11, 1]);
var x = linear().domain([.7, 11.001]).nice();
assert.deepEqual(x.domain(), [0, 12]);
var x = linear().domain([123.1, 6.7]).nice();
assert.deepEqual(x.domain(), [130, 0]);
var x = linear().domain([0, .49]).nice();
assert.deepEqual(x.domain(), [0, .5]);
},
"can specify a polylinear domain and range": function(linear) {
var x = linear().domain([-10, 0, 100]).range(["red", "white", "green"]);
assert.equal(x(-5), "rgb(255,128,128)");
assert.equal(x(50), "rgb(128,192,128)");
assert.equal(x(75), "rgb(64,160,64)");
},
"nicing a polylinear domain only affects the extent": function(linear) {
var x = linear().domain([1.1, 1, 2, 3, 10.9]).nice();
assert.deepEqual(x.domain(), [1, 1, 2, 3, 11]);
var x = linear().domain([123.1, 1, 2, 3, -.9]).nice();
assert.deepEqual(x.domain(), [130, 1, 2, 3, -10]);
}
}
});
suite.export(module);