plot/test/marks/cell-test.js at 023ea9fe0cb20fcfed264d51b1e0507ed476c130 · observablehq/plot · GitHub

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
import * as Plot from "@observablehq/plot";
import assert from "assert";

it("cell() has the expected defaults", () => {
  const cell = Plot.cell();
  assert.strictEqual(cell.data, undefined);
  assert.strictEqual(cell.transform, undefined);
  assert.deepStrictEqual(Object.keys(cell.channels), ["x", "y"]);
  assert.deepStrictEqual(
    Object.values(cell.channels).map((c) =>
      Plot.valueof(
        [
          [1, 2],
          [3, 4]
        ],
        c.value
      )
    ),
    [
      [1, 3],
      [2, 4]
    ]
  );
  assert.deepStrictEqual(
    Object.values(cell.channels).map((c) => c.scale),
    ["x", "y"]
  );
  assert.strictEqual(cell.channels.x.type, "band");
  assert.strictEqual(cell.channels.y.type, "band");
  assert.strictEqual(cell.fill, undefined);
  assert.strictEqual(cell.fillOpacity, undefined);
  assert.strictEqual(cell.stroke, undefined);
  assert.strictEqual(cell.strokeWidth, undefined);
  assert.strictEqual(cell.strokeOpacity, undefined);
  assert.strictEqual(cell.strokeLinejoin, undefined);
  assert.strictEqual(cell.strokeLinecap, undefined);
  assert.strictEqual(cell.strokeMiterlimit, undefined);
  assert.strictEqual(cell.strokeDasharray, undefined);
  assert.strictEqual(cell.strokeDashoffset, undefined);
  assert.strictEqual(cell.mixBlendMode, undefined);
  assert.strictEqual(cell.shapeRendering, undefined);
  assert.strictEqual(cell.insetTop, 0);
  assert.strictEqual(cell.insetRight, 0);
  assert.strictEqual(cell.insetBottom, 0);
  assert.strictEqual(cell.insetLeft, 0);
});

it("cell(data, {title}) specifies an optional title channel", () => {
  const cell = Plot.cell(undefined, {title: "x"});
  const {title} = cell.channels;
  assert.strictEqual(title.value, "x");
  assert.strictEqual(title.scale, undefined);
});

it("cell(data, {fill}) allows fill to be a constant color", () => {
  const cell = Plot.cell(undefined, {fill: "red"});
  assert.strictEqual(cell.fill, "red");
});

it("cell(data, {fill}) allows fill to be null", () => {
  const cell = Plot.cell(undefined, {fill: null});
  assert.strictEqual(cell.fill, "none");
});

it("cell(data, {fill}) allows fill to be a variable color", () => {
  const cell = Plot.cell(undefined, {fill: "x"});
  assert.strictEqual(cell.fill, undefined);
  const {fill} = cell.channels;
  assert.strictEqual(fill.value, "x");
  assert.strictEqual(fill.scale, "auto");
});

it("cell(data, {stroke}) allows stroke to be a constant color", () => {
  const cell = Plot.cell(undefined, {stroke: "red"});
  assert.strictEqual(cell.stroke, "red");
});

it("cell(data, {stroke}) allows stroke to be null", () => {
  const cell = Plot.cell(undefined, {stroke: null});
  assert.strictEqual(cell.stroke, undefined);
});

it("cell(data, {stroke}) allows stroke to be a variable color", () => {
  const cell = Plot.cell(undefined, {stroke: "x"});
  assert.strictEqual(cell.stroke, undefined);
  const {stroke} = cell.channels;
  assert.strictEqual(stroke.value, "x");
  assert.strictEqual(stroke.scale, "auto");
});

it("cellX() defaults x to identity and y to null", () => {
  const cell = Plot.cellX();
  assert.strictEqual(cell.data, undefined);
  assert.strictEqual(cell.transform, undefined);
  assert.deepStrictEqual(Object.keys(cell.channels), ["fill", "x"]);
  assert.deepStrictEqual(
    Object.values(cell.channels).map((c) => Plot.valueof([1, 2, 3], c.value)),
    [
      [1, 2, 3],
      [0, 1, 2]
    ]
  );
  assert.deepStrictEqual(
    Object.values(cell.channels).map((c) => c.scale),
    ["auto", "x"]
  );
  assert.strictEqual(cell.channels.x.type, "band");
});

it("cellY() defaults y to identity and x to null", () => {
  const cell = Plot.cellY();
  assert.strictEqual(cell.data, undefined);
  assert.strictEqual(cell.transform, undefined);
  assert.deepStrictEqual(Object.keys(cell.channels), ["fill", "y"]);
  assert.deepStrictEqual(
    Object.values(cell.channels).map((c) => Plot.valueof([1, 2, 3], c.value)),
    [
      [1, 2, 3],
      [0, 1, 2]
    ]
  );
  assert.deepStrictEqual(
    Object.values(cell.channels).map((c) => c.scale),
    ["auto", "y"]
  );
  assert.strictEqual(cell.channels.y.type, "band");
});

it("cell() is incompatible with a projection", () => {
  assert.throws(
    () => Plot.cell([]).plot({projection: "equal-earth"}),
    /scale incompatible with channel: projection !== band/
  );
});