mirror of https://github.com/tc39/test262.git
119 lines
3.6 KiB
JavaScript
119 lines
3.6 KiB
JavaScript
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function isConfigurable(obj, name) {
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try {
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delete obj[name];
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} catch (e) {
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if (!(e instanceof TypeError)) {
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$ERROR("Expected TypeError, got " + e);
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}
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}
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return !Object.prototype.hasOwnProperty.call(obj, name);
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}
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function isEnumerable(obj, name) {
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for (var prop in obj) {
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if (Object.prototype.hasOwnProperty.call(obj, prop) &&
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assert._isSameValue(prop, name)) {
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return true;
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}
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}
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return false;
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}
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function isEqualTo(obj, name, expectedValue) {
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var actualValue = obj[name];
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return assert._isSameValue(actualValue, expectedValue);
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}
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function isWritable(obj, name, verifyProp, value) {
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var newValue = value || "unlikelyValue";
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var hadValue = Object.prototype.hasOwnProperty.call(obj, name);
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var oldValue = obj[name];
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var writeSucceeded;
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try {
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obj[name] = newValue;
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} catch (e) {
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if (!(e instanceof TypeError)) {
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$ERROR("Expected TypeError, got " + e);
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}
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}
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writeSucceeded = isEqualTo(obj, verifyProp || name, newValue);
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// Revert the change only if it was successful (in other cases, reverting
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// is unnecessary and may trigger exceptions for certain property
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// configurations)
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if (writeSucceeded) {
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if (hadValue) {
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obj[name] = oldValue;
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} else {
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delete obj[name];
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}
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}
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return writeSucceeded;
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}
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function verifyEqualTo(obj, name, value) {
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if (!isEqualTo(obj, name, value)) {
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$ERROR("Expected obj[" + String(name) + "] to equal " + value +
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", actually " + obj[name]);
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}
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}
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function verifyWritable(obj, name, verifyProp, value) {
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if (!verifyProp) {
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assert(Object.getOwnPropertyDescriptor(obj, name).writable,
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"Expected obj[" + String(name) + "] to have writable:true.");
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}
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if (!isWritable(obj, name, verifyProp, value)) {
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$ERROR("Expected obj[" + String(name) + "] to be writable, but was not.");
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}
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}
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function verifyNotWritable(obj, name, verifyProp, value) {
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if (!verifyProp) {
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assert(!Object.getOwnPropertyDescriptor(obj, name).writable,
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"Expected obj[" + String(name) + "] to have writable:false.");
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}
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if (isWritable(obj, name, verifyProp)) {
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$ERROR("Expected obj[" + String(name) + "] NOT to be writable, but was.");
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}
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}
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function verifyEnumerable(obj, name) {
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assert(Object.getOwnPropertyDescriptor(obj, name).enumerable,
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"Expected obj[" + String(name) + "] to have enumerable:true.");
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if (!isEnumerable(obj, name)) {
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$ERROR("Expected obj[" + String(name) + "] to be enumerable, but was not.");
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}
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}
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function verifyNotEnumerable(obj, name) {
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assert(!Object.getOwnPropertyDescriptor(obj, name).enumerable,
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"Expected obj[" + String(name) + "] to have enumerable:false.");
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if (isEnumerable(obj, name)) {
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$ERROR("Expected obj[" + String(name) + "] NOT to be enumerable, but was.");
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}
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}
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function verifyConfigurable(obj, name) {
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assert(Object.getOwnPropertyDescriptor(obj, name).configurable,
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"Expected obj[" + String(name) + "] to have configurable:true.");
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if (!isConfigurable(obj, name)) {
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$ERROR("Expected obj[" + String(name) + "] to be configurable, but was not.");
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}
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}
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function verifyNotConfigurable(obj, name) {
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assert(!Object.getOwnPropertyDescriptor(obj, name).configurable,
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"Expected obj[" + String(name) + "] to have configurable:false.");
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if (isConfigurable(obj, name)) {
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$ERROR("Expected obj[" + String(name) + "] NOT to be configurable, but was.");
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}
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}
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