copied set implementations from MultiFlag JS

node/tests/_archive/bigint.test.ts

@@ -0,0 +1,116 @@
+import { BigBitFlagSet } from '~'
+
+const bigPowerOfTwo = 2n ** 100n
+
+
+test('Iterate over a number', () => {
+    const flags = new BigBitFlagSet()
+
+    expect([...flags.iterate(0n)]).toEqual([])
+    expect([...flags.iterate(1n)]).toEqual([1n])
+    expect([...flags.iterate(2n)]).toEqual([2n])
+    expect([...flags.iterate(3n)]).toEqual([1n, 2n])
+    expect([...flags.iterate(11n)]).toEqual([1n, 2n, 8n])
+    expect([...flags.iterate(100n)]).toEqual([4n, 32n, 64n])
+})
+
+test('Normalise to minimum', () => {
+    const flags = new BigBitFlagSet()
+    const flag1 = flags.flag(1n)
+    const flag2 = flags.flag(2n, flag1)
+    const flag4 = flags.flag(4n, flag1)
+    const flag8 = flags.flag(8n, flag4)
+
+    expect(flags.minimum(0n)).toEqual(0n)
+    expect(flags.minimum(1n)).toEqual(1n)
+    expect(flags.minimum(2n)).toEqual(0n)
+    expect(flags.minimum(3n)).toEqual(3n)
+    expect(flags.minimum(11n)).toEqual(3n)
+    expect(flags.minimum(13n)).toEqual(13n)
+    expect(flags.minimum(17n)).toEqual(1n)
+})
+
+test('Normalise to maximum', () => {
+    const flags = new BigBitFlagSet()
+    const flag1 = flags.flag(1n)
+    const flag2 = flags.flag(2n, flag1)
+    const flag4 = flags.flag(4n, flag1)
+    const flag8 = flags.flag(8n, flag4)
+
+    expect(flags.maximum(0n)).toEqual(0n)
+    expect(flags.maximum(1n)).toEqual(1n)
+    expect(flags.maximum(2n)).toEqual(3n)
+    expect(flags.maximum(3n)).toEqual(3n)
+    expect(flags.maximum(11n)).toEqual(15n)
+    expect(flags.maximum(13n)).toEqual(13n)
+    expect(flags.maximum(17n)).toEqual(1n)
+})
+
+test('Add to bigint', () => {
+    const flags = new BigBitFlagSet()
+    const flag2 = flags.flag(2n)
+    const flag4 = flags.flag(4n)
+    const flags2And4 = flags.flag(flag2, flag4)
+    const flag100 = flags.flag(bigPowerOfTwo)
+
+    expect(flag2.addTo(1n)).toEqual(3n)
+    expect(flag4.addTo(1n)).toEqual(5n)
+    expect(flags2And4.addTo(1n)).toEqual(7n)
+    expect(flag100.addTo(1n)).toEqual(bigPowerOfTwo + 1n)
+    expect(flag2.addTo(bigPowerOfTwo)).toEqual(bigPowerOfTwo + 2n)
+})
+
+test('Remove from bigint', () => {
+    const flags = new BigBitFlagSet()
+    const flag1 = flags.flag(1n)
+    const flag2 = flags.flag(2n)
+    const flag4 = flags.flag(4n, flag1)
+    const flag100 = flags.flag(bigPowerOfTwo)
+
+    expect(flag1.removeFrom(7n)).toEqual(2n)
+    expect(flag2.removeFrom(7n)).toEqual(5n)
+    expect(flag4.removeFrom(7n)).toEqual(3n)
+    expect(flag100.removeFrom(bigPowerOfTwo + 2n)).toEqual(2n)
+    expect(flag100.removeFrom(2n)).toEqual(2n)
+    expect(flag1.removeFrom(bigPowerOfTwo - 1n)).toEqual(bigPowerOfTwo - 6n)
+})
+
+test('Is in bigint', () => {
+    const flags = new BigBitFlagSet()
+    const flag1 = flags.flag(1n)
+    const flag2 = flags.flag(2n)
+    const flag4 = flags.flag(4n, flag1)
+
+    expect(flag1.isIn(1n)).toBe(true)
+    expect(flag2.isIn(3n)).toBe(true)
+    expect(flag4.isIn(4n)).toBe(false)
+    expect(flag4.isIn(5n)).toBe(true)
+    expect(flag1.isIn(bigPowerOfTwo + 1n)).toBe(true)
+})
+
+test('Is abstract', () => {
+    const flags = new BigBitFlagSet()
+    const flag1 = flags.flag(1n)
+    const flag2 = flags.flag(2n)
+    const flags1And2 = flags.flag(flag1, flag2)
+    const flag4 = flags.flag(4n, flags1And2)
+
+    expect(flag1.isAbstract).toBe(false)
+    expect(flag2.isAbstract).toBe(false)
+    expect(flags1And2.isAbstract).toBe(true)
+    expect(flag4.isAbstract).toBe(false)
+})
+
+test('Environment without bigint', async () => {
+    const originalBigInt = globalThis.BigInt
+    // @ts-ignore
+    delete globalThis.BigInt
+    let module: { BigBitFlagSet: typeof BigBitFlagSet }
+    await jest.isolateModulesAsync(async () => {
+        module = await import('@module')
+    })
+
+    expect(() => new module.BigBitFlagSet()).toThrow()
+
+    globalThis.BigInt = originalBigInt
+})