json-as/assembly/__tests__/generics.spec.ts

The only JSON library you'll need for AssemblyScript. SIMD enabled

import { JSON } from "..";
import { describe, expect } from "./lib";


@json
class GenericTest<T> {
  public foo: T;

  constructor(foo: T) {
    this.foo = foo;
  }
}


@json
class Vec3 {
  public x!: i32;
  public y!: i32;
  public z!: i32;
}

describe("Should serialize generics", () => {
  expect(JSON.stringify(new GenericTest<string>("bar"))).toBe('{"foo":"bar"}');
  expect(JSON.stringify(new GenericTest<i32>(42))).toBe('{"foo":42}');
  expect(JSON.stringify(new GenericTest<boolean>(true))).toBe('{"foo":true}');
  expect(JSON.stringify(new GenericTest<Vec3>({ x: 1, y: 2, z: 3 }))).toBe('{"foo":{"x":1,"y":2,"z":3}}');
  expect(JSON.stringify(new GenericTest<string[]>(["item1", "item2"]))).toBe('{"foo":["item1","item2"]}');
  expect(
    JSON.stringify(
      new GenericTest<Vec3[]>([
        { x: 1, y: 2, z: 3 },
        { x: 4, y: 5, z: 6 },
      ]),
    ),
  ).toBe('{"foo":[{"x":1,"y":2,"z":3},{"x":4,"y":5,"z":6}]}');
  expect(JSON.stringify(new GenericTest<i32[]>([1, 2, 3]))).toBe('{"foo":[1,2,3]}');
  expect(JSON.stringify(new GenericTest<boolean[]>([true, false, true]))).toBe('{"foo":[true,false,true]}');
});

describe("Should deserialize generics", () => {
  expect(JSON.parse<GenericTest<string>>('{"foo":"bar"}').foo).toBe("bar");
  expect(JSON.parse<GenericTest<i32>>('{"foo":42}').foo.toString()).toBe("42");
  expect(JSON.parse<GenericTest<boolean>>('{"foo":true}').foo).toBe(true);
  expect(JSON.stringify(JSON.parse<GenericTest<Vec3>>('{"foo":{"x":1,"y":2,"z":3}}'))).toBe('{"foo":{"x":1,"y":2,"z":3}}');
  expect(JSON.stringify(JSON.parse<GenericTest<string[]>>('{"foo":["item1","item2"]}'))).toBe('{"foo":["item1","item2"]}');
  expect(JSON.stringify(JSON.parse<GenericTest<Vec3[]>>('{"foo":[{"x":1,"y":2,"z":3},{"x":4,"y":5,"z":6}]}'))).toBe('{"foo":[{"x":1,"y":2,"z":3},{"x":4,"y":5,"z":6}]}');
  expect(JSON.stringify(JSON.parse<GenericTest<i32[]>>('{"foo":[1,2,3]}'))).toBe('{"foo":[1,2,3]}');
  expect(JSON.stringify(JSON.parse<GenericTest<boolean[]>>('{"foo":[true,false,true]}'))).toBe('{"foo":[true,false,true]}');
});