import {expect} from "chai"

import {compute_side} from "@bokehjs/models/annotations/tooltip"
import {Side} from "@bokehjs/core/enums"

describe("compute_side", () => {
  for (const side of Side) {
    it(`should return explicit ${side} attachment as-is`, () => {
      expect(compute_side(side,  0,  0, 5, 5)).to.be.equal(side)
      expect(compute_side(side, 10,  0, 5, 5)).to.be.equal(side)
      expect(compute_side(side,  0, 10, 5, 5)).to.be.equal(side)
      expect(compute_side(side, 10, 10, 5, 5)).to.be.equal(side)
    })
  }

  it("should return vertical attachment based on sy and vcenter", () => {
    // top of screen, attach below
    expect(compute_side("vertical",  0, 0, 5, 5)).to.be.equal("below")
    expect(compute_side("vertical", 10, 0, 5, 5)).to.be.equal("below")

    // bottom of screen, attach above
    expect(compute_side("vertical",  0, 10, 5, 5)).to.be.equal("above")
    expect(compute_side("vertical", 10, 10, 5, 5)).to.be.equal("above")
  })

  it("should return horizontal attachment based on sx and hcenter", () => {
    // left of screen, attach right
    expect(compute_side("horizontal", 0,  0, 5, 5)).to.be.equal("right")
    expect(compute_side("horizontal", 0, 10, 5, 5)).to.be.equal("right")

    // right of screen, attach left
    expect(compute_side("horizontal", 10,  0, 5, 5)).to.be.equal("left")
    expect(compute_side("horizontal", 10, 10, 5, 5)).to.be.equal("left")
  })
})