epam/miew

import { expect } from 'chai'
import sinon from 'sinon'
import palettes from '../palettes'
import OccupancyColorer from './OccupancyColorer'

describe('OccupancyColorer', () => {
  const opts = { gradient: 'rainbow' }
  const left = 0.0
  const center = 0.5
  const right = 1.0
  const lGradientColor = 0x0000ff
  const cGradientColor = 0x00ff00
  const rGradientColor = 0xff0000

  class FirstPalette {
    defaultGradientColor = 0xffffff

    getGradientColor(value, gradientName) {
      if (value === left && gradientName === opts.gradient) {
        return lGradientColor
      }
      if (value === center && gradientName === opts.gradient) {
        return cGradientColor
      }
      if (value === right && gradientName === opts.gradient) {
        return rGradientColor
      }
      return 0x000000
    }
  }
  const palette = new FirstPalette()

  describe('#getAtomColor', () => {
    let paletteStub
    let oColorer

    beforeEach(() => {
      paletteStub = sinon.stub(palettes, 'first').value(palette)
      oColorer = new OccupancyColorer(opts)
    })
    afterEach(() => {
      paletteStub.restore()
    })

    it('returns left color of gradient for atom with the highest occupancy', () => {
      const atom = { occupancy: 1.0 }
      const color = oColorer.getAtomColor(atom)
      expect(color).to.equal(lGradientColor)
    })

    it('returns middle color of gradient for atom with the middle occupancy', () => {
      const atom = { occupancy: 0.5 }
      const color = oColorer.getAtomColor(atom)
      expect(color).to.equal(cGradientColor)
    })

    it('returns right color of gradient for atom with the lowest occupancy', () => {
      const atom = { occupancy: 0.0 }
      const color = oColorer.getAtomColor(atom)
      expect(color).to.equal(rGradientColor)
    })

    it("returns default color which is set for this palette if atom's occupancy is not specified", () => {
      const atom = { occupancy: undefined }

      const color = oColorer.getAtomColor(atom)
      expect(color).to.equal(palette.defaultGradientColor)
    })
  })

  describe('#getResidueColor', () => {
    let paletteStub
    let oColorer

    beforeEach(() => {
      paletteStub = sinon.stub(palettes, 'first').value(palette)
      oColorer = new OccupancyColorer(opts)
    })
    afterEach(() => {
      paletteStub.restore()
    })

    it('returns left color of gradient for residue with the highest occupancy', () => {
      const residue = { occupancy: 1.0 }
      const color = oColorer.getResidueColor(residue)
      expect(color).to.equal(lGradientColor)
    })

    it('returns middle color of gradient for residue with the middle occupancy', () => {
      const residue = { occupancy: 0.5 }
      const color = oColorer.getResidueColor(residue)
      expect(color).to.equal(cGradientColor)
    })

    it('returns right color of gradient for residue with the lowest occupancy', () => {
      const residue = { occupancy: 0.0 }
      const color = oColorer.getResidueColor(residue)
      expect(color).to.equal(rGradientColor)
    })

    /* it('returns default color which is set for this palette if gradient mode is not specified in it', () => {
      const residue = { occupancy: 0.0 };
      const colorerWithoutOpts = new OccupancyColorer();
      const colorerWithoutGradOpts = new OccupancyColorer({ color: 0x0000ff });

      let color = colorerWithoutOpts.getResidueColor(residue);
      expect(color).to.equal(palette.defaultGradientColor);

      color = colorerWithoutGradOpts.getResidueColor(residue);
      expect(color).to.equal(palette.defaultGradientColor);
    }); */

    it("returns default color which is set for this palette if residue's occupancy is not specified", () => {
      const residue = { occupancy: undefined }

      const color = oColorer.getResidueColor(residue)
      expect(color).to.equal(palette.defaultGradientColor)
    })
  })

  describe('.id', () => {
    const oColorer = new OccupancyColorer()

    it("have .id property type 'string'", () => {
      expect(oColorer).to.have.property('id')
      expect(oColorer.id).to.be.a('string')
    })

    it('have .id property different from such in parent class', () => {
      const colorer = Object.getPrototypeOf(Object.getPrototypeOf(oColorer))
      expect(oColorer.id).to.not.equal(colorer.id)
    })
  })

  describe('.name', () => {
    it("have .name property type 'string'", () => {
      const oColorer = new OccupancyColorer()
      expect(oColorer).to.have.property('name')
      expect(oColorer.name).to.be.a('string')
    })
  })

  describe('.shortName', () => {
    it("have .shortName property type 'string'", () => {
      const oColorer = new OccupancyColorer()
      expect(oColorer).to.have.property('shortName')
      expect(oColorer.shortName).to.be.a('string')
    })
  })
})