en.javascript.info/1-js/4-object-basics/07-constructor-new/4-calculator-extendable/_js.view/test.js
Ilya Kantor 3defacc09d up
2016-11-12 19:38:58 +03:00

26 lines
No EOL
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JavaScript

var calculator;
before(function() {
calculator = new Calculator;
});
it("calculate(12 + 34) = 46", function() {
assert.equal(calculator.calculate("12 + 34"), 46);
});
it("calculate(34 - 12) = 22", function() {
assert.equal(calculator.calculate("34 - 12"), 22);
});
it("добавили умножение: calculate(2 * 3) = 6", function() {
calculator.addMethod("*", function(a, b) {
return a * b;
});
assert.equal(calculator.calculate("2 * 3"), 6);
});
it("добавили возведение в степень: calculate(2 ** 3) = 8", function() {
calculator.addMethod("**", function(a, b) {
return Math.pow(a, b);
});
assert.equal(calculator.calculate("2 ** 3"), 8);
});