soda-test
Version:
Package for Unit and API tests
102 lines • 3.97 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.setProperty = void 0;
// set property of the given object to the given value, include the property on the "star"
// objects, if exist
function setProperty(obj, name, value) {
const rv = setPropertyInternal(obj, name, value);
if (rv === null || !obj['soda-test-star'])
return rv;
const rvs = [];
for (const starlib of obj['soda-test-star']) {
const rv1 = setPropertyInternal(starlib, name, value);
if (rv1)
rvs.push(rv1);
}
if (rvs.length === 0)
return rv;
return () => {
rv && rv();
rvs.forEach(rv => rv());
};
}
exports.setProperty = setProperty;
// set the property with the given name on the given object to the given value
// this method hanlds the case of read-only property.
// if the property is already set to the given value, this method returns undefined
// if the preopty cannot be set this method returns null
// if the property was set this method return a restore method to set it back to what it was
function setPropertyInternal(obj, name, value) {
try {
if (!obj || typeof obj !== "object" && typeof obj !== "function")
return null;
const descriptor = Object.getOwnPropertyDescriptor(obj, name);
if (!descriptor) {
// the property does not exit
obj[name] = value;
return () => {
delete obj[name];
};
}
if (obj[name] === value) {
// the property already has the requested value
return undefined;
}
if (descriptor.writable === true) {
// this is a writable proeprty
const oldValue = obj[name];
obj[name] = value;
return () => {
obj[name] = oldValue;
};
}
if (descriptor.writable === false) {
// this is a readonly property
if (descriptor.configurable) {
// reconfigure the property to have the requsted value
Object.defineProperty(obj, name, Object.assign(Object.assign({}, descriptor), { value }));
return () => {
Object.defineProperty(obj, name, descriptor);
};
}
else {
// readonly property that cannot be configured
return null;
}
}
if (descriptor.get) {
// this property has a get method
if (descriptor.set) {
// this proeprty has a set method too, try to use it to replace the value
const oldValue = obj[name];
obj[name] = value;
if (obj[name] === value) {
// the value was updated as needed
return () => {
obj[name] = oldValue;
};
}
}
// there is no set method, or set did not do the work
if (descriptor.configurable) {
// replace the get method with one that shall return the value we want
Object.defineProperty(obj, name, Object.assign(Object.assign({}, descriptor), { get: () => value }));
return () => {
Object.defineProperty(obj, name, descriptor);
};
}
else {
// connot reconfigure the get method
return null;
}
}
// if we got here, the propety exist, but is is not by value and does not have a get method
// maybe it is a write only property. Anyway, there is nothing we can do
return null;
}
catch (_a) {
// somethind went wrong
return null;
}
}
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