smart-types-ts
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A collection of _Smart Types_ and _Smart Constructors_ which enable you to be more strict when defining your application's important types/interfaces.
49 lines (48 loc) • 2.57 kB
JavaScript
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const chai_1 = require("chai");
const fc = __importStar(require("fast-check"));
const e = __importStar(require("fp-ts/lib/Either"));
const numInRange_1 = require("./numInRange");
describe("NumInRange", () => {
describe("mkNumInRange", () => {
it("returns None when the input is invalid", () => {
const rangeMin = 0;
const rangeMax = 10;
const invalidInput = fc.oneof(fc.integer({ max: rangeMin - 1 }), fc.integer({ min: rangeMax + 1 }), fc.float({ next: true, max: new Float32Array([rangeMin - 1])[0] }), fc.float({ next: true, min: new Float32Array([rangeMax + 1.1])[0] }), fc.double({ next: true, max: rangeMin - 1 }), fc.double({ next: true, min: rangeMax + 1.1 }));
fc.assert(fc.property(invalidInput, (num) => {
chai_1.assert.deepStrictEqual(numInRange_1.mkNumInRange(rangeMin, rangeMax)(num), e.left(`Number must be between ${rangeMin}-${rangeMax}`));
}));
});
it("succeeds when the input is a positive integer", () => {
const rangeMin = 100;
const rangeMax = 120;
const validInput = fc.oneof(fc.integer({ min: rangeMin, max: rangeMax }), fc.float({ min: rangeMin, max: rangeMax }), fc.double({ min: rangeMin, max: rangeMax }));
fc.assert(fc.property(validInput, (num) => {
chai_1.assert.deepStrictEqual(numInRange_1.mkNumInRange(rangeMin, rangeMax)(num), e.right(num));
}));
});
it("throws when given invalid min/max arguments", () => {
chai_1.assert.throws(() => numInRange_1.mkNumInRange(10, 0));
});
});
});