viewbox

should be able to create a new viewbox.

var result = viewbox.create()
expect(result).to.eql([])

should be able to add two viewboxes.

var box1 = [0, -1, 4, 5]
var box2 = [-3, 1, 2, 6]
var result = viewbox.add(box1, box2)
expect(result).to.eql([-3, -1, 7, 8])

should be able to add a viewbox to a new viewbox.

var box1 = viewbox.create()
var box2 = [-3, 1, 2, 6]
var result = viewbox.add(box1, box2)
expect(result).to.eql([-3, 1, 2, 6])

should be able to add a new viewbox to a viewbox.

var box1 = [0, -1, 4, 5]
var box2 = viewbox.create()
var result = viewbox.add(box1, box2)
expect(result).to.eql([0, -1, 4, 5])

should be able to scale a viewbox.

var box = [-1.5, 0.5, 1, 3]
var result = viewbox.scale(box, 2)
expect(result).to.eql([-3, 1, 2, 6])

should be able to generate attributes for an SVG rectangle.

var box = [0, -1, 4, 5]
var result = viewbox.rect(box)
expect(result).to.eql({
  x: 0,
  y: -1,
  width: 4,
  height: 5
})

should output a 0 size rectangle for a new viewbox.

var box = viewbox.create()
var result = viewbox.rect(box)
expect(result).to.eql({
  x: 0,
  y: 0,
  width: 0,
  height: 0
})

should output a 0 size rectangle for something falsey.

var result = viewbox.rect()
expect(result).to.eql({
  x: 0,
  y: 0,
  width: 0,
  height: 0
})

should be able to generate a viewbox string.

var box = [1, 2, 3, 4]
var result = viewbox.asString(box)
expect(result).to.equal('1 2 3 4')

should output a new viewbox as a 0 size viewbox string.

var box = viewbox.create()
var result = viewbox.asString(box)
expect(result).to.equal('0 0 0 0')

should output something falsey as a 0 size viewbox string.

var result = viewbox.asString()
expect(result).to.equal('0 0 0 0')

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