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46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
"use strict";
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const expect = require("chai").expect;
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const dm = require("../src");
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let User = dm.createType("User", {
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messages: dm.arrayOf(dm.string())
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});
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describe("guarded arrays", () => {
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let joe = User({
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messages: []
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});
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it("should accept valid values", () => {
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joe.messages.push("Hello world!");
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expect(joe.messages[0]).to.equal("Hello world!");
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joe.messages.splice(0, 0, "Hello earth!")
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expect(joe.messages[0]).to.equal("Hello earth!");
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expect(joe.messages[1]).to.equal("Hello world!");
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joe.messages[0] = "Hello moon!";
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expect(joe.messages[0]).to.equal("Hello moon!");
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expect(joe.messages[1]).to.equal("Hello world!");
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});
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it("should reject invalid values", () => {
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expect(() => {
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joe.messages.push(42);
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}).to.throw("Expected a string, got a number instead");
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expect(() => {
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joe.messages.splice(0, 0, 43);
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}).to.throw("Expected a string, got a number instead");
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expect(() => {
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joe.messages[0] = 44;
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}).to.throw("Expected a string, got a number instead");
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expect(joe.messages[0]).to.equal("Hello moon!");
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expect(joe.messages[1]).to.equal("Hello world!");
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});
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});
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