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LibJS: Convert Proxy tests
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14 changed files with 820 additions and 815 deletions
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@ -1,49 +1,36 @@
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load("test-common.js");
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try {
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assert(Object.isExtensible(new Proxy({}, { isExtensible: null })) === true);
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assert(Object.isExtensible(new Proxy({}, { isExtensible: undefined })) === true);
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assert(Object.isExtensible(new Proxy({}, {})) === true);
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let o = {};
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let p = new Proxy(o, {
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isExtensible(target) {
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assert(target === o);
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return true;
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}
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describe("[[IsExtensible]] trap normal behavior", () => {
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test("forwarding when not defined in handler", () => {
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expect(Object.isExtensible(new Proxy({}, { isExtensible: null }))).toBe(true);
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expect(Object.isExtensible(new Proxy({}, { isExtensible: undefined }))).toBe(true);
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expect(Object.isExtensible(new Proxy({}, {}))).toBe(true);
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});
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Object.isExtensible(p);
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test("correct arguments supplied to trap", () => {
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let o = {};
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let p = new Proxy(o, {
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isExtensible(target) {
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expect(target).toBe(o);
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return true;
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}
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});
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// Invariants
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o = {};
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p = new Proxy(o, {
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isExtensible(proxyTarget) {
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assert(proxyTarget === o);
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return true;
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},
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expect(Object.isExtensible(p)).toBe(true);
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});
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});
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assert(Object.isExtensible(p) === true);
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Object.preventExtensions(o);
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describe("[[Call]] invariants", () => {
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test("return value must match the target's extensibility", () => {
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let o = {};
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Object.preventExtensions(o);
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assertThrowsError(() => {
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Object.isExtensible(p);
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}, {
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error: TypeError,
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message: "Proxy handler's isExtensible trap violates invariant: return value must match the target's extensibility",
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let p = new Proxy(o, {
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isExtensible() {
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return true;
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},
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});
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expect(() => {
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Object.isExtensible(p);
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}).toThrowWithMessage(TypeError, "Proxy handler's isExtensible trap violates invariant: return value must match the target's extensibility");
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});
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p = new Proxy(o, {
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isExtensible(proxyTarget) {
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assert(proxyTarget === o);
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return false;
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},
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});
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assert(Object.isExtensible(p) === false);
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console.log("PASS");
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} catch (e) {
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console.log("FAIL: " + e);
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}
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});
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