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response_test.ts
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// Copyright 2018-2020 the oak authors. All rights reserved. MIT license.
import { Status } from "./deps.ts";
import { test, assert, assertEquals } from "./test_deps.ts";
import { Request } from "./request.ts";
import { Response, REDIRECT_BACK } from "./response.ts";
const decoder = new TextDecoder();
function decodeBody(body: Uint8Array | Deno.Reader | undefined): string {
return decoder.decode(body as Uint8Array);
}
function createMockRequest({
headers,
accepts = (_contentType: string) => {
return true;
},
}: {
headers?: [string, string][];
accepts?: (contentType: string) => boolean;
} = {}): Request {
return { accepts, headers: new Headers(headers) } as any;
}
test({
name: "response empty",
fn() {
const response = new Response(createMockRequest());
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.body, undefined);
assertEquals(serverResponse.status, 404);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
assertEquals(serverResponse.headers!.get("Content-Length"), "0");
},
});
test({
name: "response.status set",
fn() {
const response = new Response(createMockRequest());
response.status = 302;
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.body, undefined);
assertEquals(serverResponse.status, 302);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
assertEquals(serverResponse.headers!.get("Content-Length"), "0");
},
});
test({
name: "response.body as text",
fn() {
const response = new Response(createMockRequest());
response.body = "Hello world!";
const serverResponse = response.toServerResponse();
assertEquals(decodeBody(serverResponse.body), "Hello world!");
assertEquals(serverResponse.status, 200);
assertEquals(
serverResponse.headers!.get("content-type"),
"text/plain; charset=utf-8",
);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
},
});
test({
name: "response.body as HTML",
fn() {
const response = new Response(createMockRequest());
response.body = "<!DOCTYPE html><html><body>Hello world!</body></html>";
const serverResponse = response.toServerResponse();
assertEquals(
decodeBody(serverResponse.body),
"<!DOCTYPE html><html><body>Hello world!</body></html>",
);
assertEquals(serverResponse.status, 200);
assertEquals(
serverResponse.headers!.get("content-type"),
"text/html; charset=utf-8",
);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
},
});
test({
name: "response.body as JSON",
fn() {
const response = new Response(createMockRequest());
response.body = { foo: "bar" };
const serverResponse = response.toServerResponse();
assertEquals(decodeBody(serverResponse.body), `{"foo":"bar"}`);
assertEquals(serverResponse.status, 200);
assertEquals(
serverResponse.headers!.get("content-type"),
"application/json; charset=utf-8",
);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
},
});
test({
name: "response.body as symbol",
fn() {
const response = new Response(createMockRequest());
response.body = Symbol("foo");
const serverResponse = response.toServerResponse();
assertEquals(decodeBody(serverResponse.body), "Symbol(foo)");
assertEquals(serverResponse.status, 200);
assertEquals(
serverResponse.headers!.get("content-type"),
"text/plain; charset=utf-8",
);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
},
});
test({
name: "response.body as Uint8Array",
fn() {
const response = new Response(createMockRequest());
response.body = new TextEncoder().encode("Hello world!");
const serverResponse = response.toServerResponse();
assertEquals(decodeBody(serverResponse.body), "Hello world!");
assertEquals(serverResponse.status, 200);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 0);
},
});
test({
name: "response.type",
fn() {
const response = new Response(createMockRequest());
response.type = "js";
response.body = "console.log('hello world');";
const serverResponse = response.toServerResponse();
assertEquals(
decodeBody(serverResponse.body),
"console.log('hello world');",
);
assertEquals(serverResponse.status, 200);
assertEquals(
serverResponse.headers!.get("content-type"),
"application/javascript; charset=utf-8",
);
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
},
});
test({
name: "response.type does not overwrite",
fn() {
const response = new Response(createMockRequest());
response.type = "js";
response.body = "console.log('hello world');";
response.headers.set("content-type", "text/plain");
const serverResponse = response.toServerResponse();
assertEquals(
decodeBody(serverResponse.body),
"console.log('hello world');",
);
assertEquals(serverResponse.status, 200);
assertEquals(serverResponse.headers!.get("Content-Type"), "text/plain");
assertEquals(Array.from(serverResponse.headers!.entries()).length, 1);
},
});
test({
name: "empty response sets contentLength to 0",
fn() {
const response = new Response(createMockRequest());
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.headers!.get("Content-Length"), "0");
},
});
test({
name: "response.redirect('./foo')",
fn() {
const response = new Response(createMockRequest());
response.redirect("./foo");
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.status, Status.Found);
assertEquals(
decodeBody(serverResponse.body),
`Redirecting to <a href="./foo">./foo</a>.`,
);
assertEquals(serverResponse.headers!.get("Location"), "./foo");
assertEquals(
serverResponse.headers?.get("Content-Type"),
"text/html; charset=utf-8",
);
},
});
test({
name: "response.redirect(URL)",
fn() {
const response = new Response(createMockRequest());
const url = new URL("https://example.com/foo");
response.redirect(url);
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.status, Status.Found);
assertEquals(
decodeBody(serverResponse.body),
`Redirecting to <a href="https://example.com/foo">https://example.com/foo</a>.`,
);
assertEquals(
serverResponse.headers!.get("Location"),
"https://example.com/foo",
);
},
});
test({
name: "response.redirect(REDIRECT_BACK)",
fn() {
const response = new Response(
createMockRequest({ headers: [["referrer", "https://example.com/foo"]] }),
);
response.redirect(REDIRECT_BACK);
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.status, Status.Found);
assertEquals(
decodeBody(serverResponse.body),
`Redirecting to <a href="https://example.com/foo">https://example.com/foo</a>.`,
);
assertEquals(
serverResponse.headers!.get("Location"),
"https://example.com/foo",
);
},
});
test({
name: "response.redirect(REDIRECT_BACK) no referrer, but alt",
fn() {
const response = new Response(createMockRequest());
response.redirect(REDIRECT_BACK, new URL("https://example.com/foo"));
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.status, Status.Found);
assertEquals(
decodeBody(serverResponse.body),
`Redirecting to <a href="https://example.com/foo">https://example.com/foo</a>.`,
);
assertEquals(
serverResponse.headers!.get("Location"),
"https://example.com/foo",
);
},
});
test({
name: "response.redirect(REDIRECT_BACK) no referrer, no alt",
fn() {
const response = new Response(createMockRequest());
response.redirect(REDIRECT_BACK);
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.status, Status.Found);
assertEquals(
decodeBody(serverResponse.body),
`Redirecting to <a href="/">/</a>.`,
);
assertEquals(serverResponse.headers!.get("Location"), "/");
},
});
test({
name: "response.redirect() no html",
fn() {
const response = new Response(createMockRequest({
accepts(value) {
return value === "html" ? false : true;
},
}));
response.redirect("https://example.com/foo");
const serverResponse = response.toServerResponse();
assertEquals(serverResponse.status, Status.Found);
assertEquals(
decodeBody(serverResponse.body),
`Redirecting to https://example.com/foo.`,
);
assertEquals(
serverResponse.headers?.get("Location"),
"https://example.com/foo",
);
assertEquals(
serverResponse.headers?.get("Content-Type"),
"text/plain; charset=utf-8",
);
},
});
test({
name: "response.body() passes Deno.Reader",
fn() {
const response = new Response(createMockRequest());
const body = new Deno.Buffer();
response.body = body;
const serverResponse = response.toServerResponse();
assert(serverResponse.body === body);
},
});