66 lines
2.2 KiB
TypeScript
66 lines
2.2 KiB
TypeScript
import { Number, UndefinedOr } from "effect"
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import { describe, it } from "vitest"
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import { strictEqual, throws } from "./utils/assert.ts"
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describe("UndefinedOr", () => {
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it("map", () => {
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const f = (a: number) => a + 1
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strictEqual(UndefinedOr.map(f)(1), 2)
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strictEqual(UndefinedOr.map(1, f), 2)
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strictEqual(UndefinedOr.map(f)(undefined), undefined)
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strictEqual(UndefinedOr.map(undefined, f), undefined)
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})
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it("match", () => {
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strictEqual(UndefinedOr.match(1, { onDefined: (a) => a, onUndefined: () => 0 }), 1)
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strictEqual(UndefinedOr.match(undefined, { onDefined: (a) => a, onUndefined: () => 0 }), 0)
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})
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it("getOrThrowWith", () => {
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strictEqual(UndefinedOr.getOrThrowWith(1, () => new Error("test")), 1)
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throws(() => UndefinedOr.getOrThrowWith(undefined, () => new Error("test")), new Error("test"))
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})
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it("getOrThrow returns defined values and throws the default missing error", () => {
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strictEqual(UndefinedOr.getOrThrow(1), 1)
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throws(() => UndefinedOr.getOrThrow(undefined), new Error("getOrThrow called on a undefined"))
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})
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it("liftThrowable", () => {
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const f = (a: number) => {
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if (a === 0) {
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throw new Error("test")
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}
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return a + 1
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}
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strictEqual(UndefinedOr.liftThrowable(f)(1), 2)
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strictEqual(UndefinedOr.liftThrowable(f)(0), undefined)
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})
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it("makeReducer", () => {
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const R = UndefinedOr.makeReducer(Number.ReducerSum)
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strictEqual(R.combine(1, 2), 3)
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strictEqual(R.combine(1, undefined), 1)
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strictEqual(R.combine(undefined, 2), 2)
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strictEqual(R.combine(undefined, undefined), undefined)
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})
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it("makeReducerFailFast", () => {
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const R = UndefinedOr.makeReducerFailFast(Number.ReducerSum)
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strictEqual(R.combine(1, 2), 3)
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strictEqual(R.combine(1, undefined), undefined)
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strictEqual(R.combine(undefined, 2), undefined)
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strictEqual(R.combine(undefined, undefined), undefined)
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strictEqual(R.combine(undefined, R.initialValue), undefined)
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strictEqual(R.combine(R.initialValue, undefined), undefined)
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strictEqual(R.combine(1, R.initialValue), 1)
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strictEqual(R.combine(R.initialValue, 1), 1)
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strictEqual(R.combineAll([1, undefined, 2]), undefined)
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strictEqual(R.combineAll([1, 2]), 3)
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})
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})
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