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test("basic functionality", () => {
class A {
#number = 3;
getNumber() {
return this.#number;
}
#string = "foo";
getString() {
return this.#string;
}
#uninitialized;
getUninitialized() {
return this.#uninitialized;
}
}
const a = new A();
expect(a.getNumber()).toBe(3);
expect(a.getString()).toBe("foo");
expect(a.getUninitialized()).toBeUndefined();
expect("a.#number").not.toEval();
expect("a.#string").not.toEval();
expect("a.#uninitialized").not.toEval();
});
test("initializer has correct this value", () => {
class A {
#thisVal = this;
getThisVal() {
return this.#thisVal;
}
#thisName = this.#thisVal;
getThisName() {
return this.#thisName;
}
}
const a = new A();
expect(a.getThisVal()).toBe(a);
expect(a.getThisName()).toBe(a);
});
test("static fields", () => {
class A {
static #simple = 1;
static getStaticSimple() {
return this.#simple;
}
static #thisVal = this;
static #thisName = this.name;
static #thisVal2 = this.#thisVal;
static getThisVal() {
return this.#thisVal;
}
static getThisName() {
return this.#thisName;
}
static getThisVal2() {
return this.#thisVal2;
}
}
expect(A.getStaticSimple()).toBe(1);
expect(A.getThisVal()).toBe(A);
expect(A.getThisName()).toBe("A");
expect(A.getThisVal2()).toBe(A);
expect("A.#simple").not.toEval();
});
test("cannot have static and non static field with the same description", () => {
expect("class A { static #simple; #simple; }").not.toEval();
});
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