Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 109x 19x 19x 19x 19x 19x 20x 20x 20x 19x 19x 4x 4x 9x 9x 19x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x 19x 109x 23x 13x 13x 10x 23x 8x 1x 1x 1x 7x 7x 8x 16x 16x 25x 25x 25x 1x 1x 25x 6x 6x 24x 24x 24x 24x 24x 24x 24x 25x 25x 25x 25x 25x 20x 20x 25x 25x 25x 25x 25x 25x 11x 11x 19x 19x 8x 8x 19x 11x 11x 8x 8x 4x 4x 5x 8x 8x 8x 8x 8x 8x 8x 109x 109x | 'use strict';
const {
ArrayPrototypePush,
ArrayPrototypeSlice,
Error,
FunctionPrototype,
ObjectFreeze,
Proxy,
ReflectApply,
SafeSet,
SafeWeakMap,
} = primordials;
const {
codes: {
ERR_UNAVAILABLE_DURING_EXIT,
ERR_INVALID_ARG_VALUE,
},
} = require('internal/errors');
const AssertionError = require('internal/assert/assertion_error');
const {
validateUint32,
} = require('internal/validators');
const noop = FunctionPrototype;
class CallTrackerContext {
#expected;
#calls;
#name;
#stackTrace;
constructor({ expected, stackTrace, name }) {
this.#calls = [];
this.#expected = expected;
this.#stackTrace = stackTrace;
this.#name = name;
}
track(thisArg, args) {
const argsClone = ObjectFreeze(ArrayPrototypeSlice(args));
ArrayPrototypePush(this.#calls, ObjectFreeze({ thisArg, arguments: argsClone }));
}
get delta() {
return this.#calls.length - this.#expected;
}
reset() {
this.#calls = [];
}
getCalls() {
return ObjectFreeze(ArrayPrototypeSlice(this.#calls));
}
report() {
if (this.delta !== 0) {
const message = `Expected the ${this.#name} function to be ` +
`executed ${this.#expected} time(s) but was ` +
`executed ${this.#calls.length} time(s).`;
return {
message,
actual: this.#calls.length,
expected: this.#expected,
operator: this.#name,
stack: this.#stackTrace
};
}
}
}
class CallTracker {
#callChecks = new SafeSet();
#trackedFunctions = new SafeWeakMap();
#getTrackedFunction(tracked) {
if (!this.#trackedFunctions.has(tracked)) {
throw new ERR_INVALID_ARG_VALUE('tracked', tracked, 'is not a tracked function');
}
return this.#trackedFunctions.get(tracked);
}
reset(tracked) {
if (tracked === undefined) {
this.#callChecks.forEach((check) => check.reset());
return;
}
this.#getTrackedFunction(tracked).reset();
}
getCalls(tracked) {
return this.#getTrackedFunction(tracked).getCalls();
}
calls(fn, expected = 1) {
if (process._exiting)
throw new ERR_UNAVAILABLE_DURING_EXIT();
if (typeof fn === 'number') {
expected = fn;
fn = noop;
} else if (fn === undefined) {
fn = noop;
}
validateUint32(expected, 'expected', true);
const context = new CallTrackerContext({
expected,
// eslint-disable-next-line no-restricted-syntax
stackTrace: new Error(),
name: fn.name || 'calls'
});
const tracked = new Proxy(fn, {
__proto__: null,
apply(fn, thisArg, argList) {
context.track(thisArg, argList);
return ReflectApply(fn, thisArg, argList);
},
});
this.#callChecks.add(context);
this.#trackedFunctions.set(tracked, context);
return tracked;
}
report() {
const errors = [];
for (const context of this.#callChecks) {
const message = context.report();
if (message !== undefined) {
ArrayPrototypePush(errors, message);
}
}
return errors;
}
verify() {
const errors = this.report();
if (errors.length === 0) {
return;
}
const message = errors.length === 1 ?
errors[0].message :
'Functions were not called the expected number of times';
throw new AssertionError({
message,
details: errors,
});
}
}
module.exports = CallTracker;
|