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@@ -0,0 +1,80 @@
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+import { expect } from 'chai'
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+import {
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+ set,
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+ unset,
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+ toggle,
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+ isset
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+} from '../src/flags'
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+
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+describe('flags', function () {
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+ describe('set', function () {
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+ it('should set a single flag', function () {
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+ expect(set(4, 0b10010)).to.eq(0b10110)
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+ })
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+
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+ it('should set the correct bits on empty flags', function () {
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+ const result = set([1, 2, 8, 32])
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+ expect(result).to.eq(0b101011)
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+ })
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+
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+ it('should set the correct bits on exisiting flags', function () {
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+ const settings = 0b1111
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+ const result = set([1, 2, 8], settings)
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+ expect(result).to.eq(0b1111)
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+ })
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+ })
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+
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+ describe('unset', function () {
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+ it('should unset a single flag', function () {
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+ const settings = 0b1111
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+ const result = unset(2, settings)
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+ expect(result).to.eq(0b1101)
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+ })
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+
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+ it('should unset nothing on empty flags', function () {
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+ const settings = 0
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+ const result = unset([1, 2, 4, 8], settings)
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+ expect(result).to.eq(0)
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+ })
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+
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+ it('should unset all bits', function () {
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+ const settings = 0b1111
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+ const result = unset([1, 2, 4, 8], settings)
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+ expect(result).to.eq(0)
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+ })
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+
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+ it('should keep zeros as they are', function () {
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+ const settings = 0b10101
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+ const result = unset([1, 2, 8], settings)
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+ expect(result).to.eq(0b10100)
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+ })
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+ })
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+
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+ describe('toggle', function () {
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+ it('should invert all flags', function () {
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+ const settings = 0b1111
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+ const result = toggle([1, 2, 4, 8], settings)
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+ expect(result).to.eq(0b0000)
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+ })
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+
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+ it('should invert only specific flags', function () {
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+ const settings = 0b1010
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+ const result = toggle([8, 1], settings)
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+ expect(result).to.eq(0b0011)
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+ })
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+ })
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+
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+ describe('isset', function () {
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+ it('should check a single flag', function () {
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+ expect(isset(4, 0b1101101)).to.eq(true)
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+ expect(isset(16, 0b1101101)).to.eq(false)
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+ })
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+
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+ it('should check multiple flags', function () {
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+ expect(isset([4, 16, 2], 0b10010111)).to.eq(true)
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+ expect(isset([8, 32, 64], 0b10010111)).to.eq(false)
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+ expect(isset([1, 8], 0b10010111)).to.eq(false)
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+ expect(isset([1, 4], 0b10010111)).to.eq(true)
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+ })
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+ })
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+})
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