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test-assert-calltracker-calls.js
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test-assert-calltracker-calls.js
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'use strict';
const common = require('../common');
const assert = require('assert');
// This test ensures that assert.CallTracker.calls() works as intended.
const tracker = new assert.CallTracker();
function bar() {}
const err = {
code: 'ERR_INVALID_ARG_TYPE',
};
// Ensures calls() throws on invalid input types.
assert.throws(() => {
const callsbar = tracker.calls(bar, '1');
callsbar();
}, err
);
assert.throws(() => {
const callsbar = tracker.calls(bar, 0.1);
callsbar();
}, { code: 'ERR_OUT_OF_RANGE' }
);
assert.throws(() => {
const callsbar = tracker.calls(bar, true);
callsbar();
}, err
);
assert.throws(() => {
const callsbar = tracker.calls(bar, () => {});
callsbar();
}, err
);
assert.throws(() => {
const callsbar = tracker.calls(bar, null);
callsbar();
}, err
);
// Expects an error as tracker.calls() cannot be called within a process exit
// handler.
process.on('exit', () => {
assert.throws(() => tracker.calls(bar, 1), {
code: 'ERR_UNAVAILABLE_DURING_EXIT',
});
});
const msg = 'Expected to throw';
function func() {
throw new Error(msg);
}
const callsfunc = tracker.calls(func, 1);
// Expects callsfunc() to call func() which throws an error.
assert.throws(
() => callsfunc(),
{ message: msg }
);
{
const tracker = new assert.CallTracker();
const callsNoop = tracker.calls(1);
callsNoop();
tracker.verify();
}
{
const tracker = new assert.CallTracker();
const callsNoop = tracker.calls(undefined, 1);
callsNoop();
tracker.verify();
}
{
function func() {}
const tracker = new assert.CallTracker();
const callsfunc = tracker.calls(func);
assert.strictEqual(callsfunc.length, 0);
}
{
function func(a, b, c = 2) {}
const tracker = new assert.CallTracker();
const callsfunc = tracker.calls(func);
assert.strictEqual(callsfunc.length, 2);
}
{
function func(a, b, c = 2) {}
delete func.length;
const tracker = new assert.CallTracker();
const callsfunc = tracker.calls(func);
assert.strictEqual(Object.hasOwn(callsfunc, 'length'), false);
}
{
const ArrayIteratorPrototype = Reflect.getPrototypeOf(
Array.prototype.values()
);
const { next } = ArrayIteratorPrototype;
ArrayIteratorPrototype.next = common.mustNotCall(
'%ArrayIteratorPrototype%.next'
);
Object.prototype.get = common.mustNotCall('%Object.prototype%.get');
const customPropertyValue = Symbol();
function func(a, b, c = 2) {
return a + b + c;
}
func.customProperty = customPropertyValue;
Object.defineProperty(func, 'length', { get: common.mustNotCall() });
const tracker = new assert.CallTracker();
const callsfunc = tracker.calls(func);
assert.strictEqual(Object.hasOwn(callsfunc, 'length'), true);
assert.strictEqual(callsfunc.customProperty, customPropertyValue);
assert.strictEqual(callsfunc(1, 2, 3), 6);
ArrayIteratorPrototype.next = next;
delete Object.prototype.get;
}