itk-wasm/test/node/interface-types/image-test.js

High-performance spatial analysis in a web browser, Node.js, and reproducible execution across programming languages and hardware architectures.

import test from 'ava'

import { Image, ImageType, IntTypes } from '../../../dist/index-node.js'

test('imageType should have the same imageType passed to the constructor', (t) => {
  const image = new Image()
  const defaultImageType = new ImageType()
  t.deepEqual(image.imageType, defaultImageType)
})

test('name should have the default value of "Image"', (t) => {
  const image = new Image()
  t.deepEqual(image.name, 'Image')
})

test('origin should have a length equal to the dimension', (t) => {
  let imageType = new ImageType(2, IntTypes.UInt8)
  let image = new Image(imageType)
  t.is(image.origin.length, 2)

  imageType = new ImageType(3, IntTypes.UInt8)
  image = new Image(imageType)
  t.is(image.origin.length, 3)
})

test('origin should have a default value of 0.0', (t) => {
  const imageType = new ImageType(2, IntTypes.UInt8)
  const image = new Image(imageType)
  t.is(image.origin[0], 0.0)
})

test('spacing should have a length equal to the dimension', (t) => {
  let imageType = new ImageType(2, IntTypes.UInt8)
  let image = new Image(imageType)
  t.is(image.spacing.length, 2)

  imageType = new ImageType(3, IntTypes.UInt8)
  image = new Image(imageType)
  t.is(image.spacing.length, 3)
})

test('spacing should have a default value of 1.0', (t) => {
  const imageType = new ImageType(2, IntTypes.UInt8)
  const image = new Image(imageType)
  t.is(image.spacing[0], 1.0)
})

test('direction should be the identity by default', (t) => {
  const imageType = new ImageType(2)
  const image = new Image(imageType)
  t.is(image.direction[0], 1.0)
  t.is(image.direction[1], 0.0)
  t.is(image.direction[2], 0.0)
  t.is(image.direction[3], 1.0)
})

test('size should have a length equal to the dimension', (t) => {
  let imageType = new ImageType(2)
  let image = new Image(imageType)
  t.is(image.size.length, 2)

  imageType = new ImageType(3)
  image = new Image(imageType)
  t.is(image.size.length, 3)
})

test('size should have a default value of 0', (t) => {
  const imageType = new ImageType(2)
  const image = new Image(imageType)
  t.is(image.size[0], 0)
})

test('metadata should be an object', (t) => {
  const imageType = new ImageType(2)
  const image = new Image(imageType)
  t.is(typeof image.metadata, 'object')
})

test('data should have a default value of null', (t) => {
  const imageType = new ImageType(2)
  const image = new Image(imageType)
  t.is(image.data, null)
})