describe("About Control Structures (test/09_about_control_structures.js)", function () {

it("if", function () {

let isPositive = false;

if (2 > 0) {

isPositive = true;

}

expect(isPositive).toBe(__, "what is the value of isPositive?");

});

it("for", function () {

let counter = 10;

for (let i = 1; i <= 3; i++) {

counter = counter + i;

}

expect(counter).toBe(__, "what is the value of counter?");

});

it("for in", function () {

// this syntax will be explained in about objects

const person = {

name: "Amory Blaine",

age: 102,

};

let result = "";

// for in enumerates the property names of an object

for (let property_name in person) {

result = result + property_name;

}

expect(result).toBe(__, "what is the value of result?");

});

it("ternary operator", function () {

let fruit = true ? "apple" : "orange";

expect(fruit).toBe(__, "what is the value of fruit?");

fruit = false ? "apple" : "orange";

expect(fruit).toBe(__, "now what is the value of fruit?");

});

it("switch", function () {

let result = 0;

switch (2) {

case 1:

result = 1;

break;

case 1 + 1:

result = 2;

break;

}

expect(result).toBe(__, "what is the value of result?");

});

it("switch default case", function () {

let result = "Pippin";

switch ("m") {

case "f":

result = "Frodo";

break;

case "s":

result = "Samwise";

break;

default:

result = "Merry";

break;

}

expect(result).toBe(__, "what is the value of result?");

});

it("null coalescing", function () {

let result = null || "a value";

expect(result).toBe(__, "what is the value of result?");

});

});