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// META: global=window,worker
// META: title=Response: json static method
const APPLICATION_JSON = "application/json";
const FOO_BAR = "foo/bar";
const INIT_TESTS = [
[undefined, 200, "", APPLICATION_JSON, {}],
[{ status: 400 }, 400, "", APPLICATION_JSON, {}],
[{ statusText: "foo" }, 200, "foo", APPLICATION_JSON, {}],
[{ headers: {} }, 200, "", APPLICATION_JSON, {}],
[{ headers: { "content-type": FOO_BAR } }, 200, "", FOO_BAR, {}],
[{ headers: { "x-foo": "bar" } }, 200, "", APPLICATION_JSON, { "x-foo": "bar" }],
];
for (const [init, expectedStatus, expectedStatusText, expectedContentType, expectedHeaders] of INIT_TESTS) {
promise_test(async function () {
const response = Response.json("hello world", init);
assert_equals(response.type, "default", "Response's type is default");
assert_equals(response.status, expectedStatus, "Response's status is " + expectedStatus);
assert_equals(response.statusText, expectedStatusText, "Response's statusText is " + JSON.stringify(expectedStatusText));
assert_equals(response.headers.get("content-type"), expectedContentType, "Response's content-type is " + expectedContentType);
for (const key in expectedHeaders) {
assert_equals(response.headers.get(key), expectedHeaders[key], "Response's header " + key + " is " + JSON.stringify(expectedHeaders[key]));
}
const data = await response.json();
assert_equals(data, "hello world", "Response's body is 'hello world'");
}, `Check response returned by static json() with init ${JSON.stringify(init)}`);
}
const nullBodyStatus = [204, 205, 304];
for (const status of nullBodyStatus) {
test(function () {
assert_throws_js(
TypeError,
function () {
Response.json("hello world", { status: status });
},
);
}, `Throws TypeError when calling static json() with a status of ${status}`);
}
promise_test(async function () {
const response = Response.json({ foo: "bar" });
const data = await response.json();
assert_equals(typeof data, "object", "Response's json body is an object");
assert_equals(data.foo, "bar", "Response's json body is { foo: 'bar' }");
}, "Check static json() encodes JSON objects correctly");
test(function () {
assert_throws_js(
TypeError,
function () {
Response.json(Symbol("foo"));
},
);
}, "Check static json() throws when data is not encodable");
test(function () {
const a = { b: 1 };
a.a = a;
assert_throws_js(
TypeError,
function () {
Response.json(a);
},
);
}, "Check static json() throws when data is circular");
promise_test(async function () {
class CustomError extends Error {
name = "CustomError";
}
assert_throws_js(
CustomError,
function () {
Response.json({ get foo() { throw new CustomError("bar") }});
}
)
}, "Check static json() propagates JSON serializer errors");
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