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// Copyright 2018 the Deno authors. All rights reserved. MIT license.
// A simple runtime that doesn't involve typescript or protobufs to test
// libdeno. Invoked by libdeno_test.cc
const global = this;
function assert(cond) {
if (!cond) throw Error("libdeno_test.js assert failed");
}
global.CanCallFunction = () => {
libdeno.print("Hello world from foo");
return "foo";
};
// This object is created to test snapshotting.
// See DeserializeInternalFieldsCallback and SerializeInternalFieldsCallback.
const snapshotted = new Uint8Array([1, 3, 3, 7]);
global.TypedArraySnapshots = () => {
assert(snapshotted[0] === 1);
assert(snapshotted[1] === 3);
assert(snapshotted[2] === 3);
assert(snapshotted[3] === 7);
};
global.RecvReturnEmpty = () => {
const m1 = new Uint8Array("abc".split("").map(c => c.charCodeAt(0)));
const m2 = m1.slice();
const r1 = libdeno.send(m1);
assert(r1 == null);
const r2 = libdeno.send(m2);
assert(r2 == null);
};
global.RecvReturnBar = () => {
const m = new Uint8Array("abc".split("").map(c => c.charCodeAt(0)));
const r = libdeno.send(m);
assert(r instanceof Uint8Array);
assert(r.byteLength === 3);
const rstr = String.fromCharCode(...r);
assert(rstr === "bar");
};
global.DoubleRecvFails = () => {
// libdeno.recv is an internal function and should only be called once from the
// runtime.
libdeno.recv((channel, msg) => assert(false));
libdeno.recv((channel, msg) => assert(false));
};
global.SendRecvSlice = () => {
const abLen = 1024;
let buf = new Uint8Array(abLen);
for (let i = 0; i < 5; i++) {
// Set first and last byte, for verification by the native side.
buf[0] = 100 + i;
buf[buf.length - 1] = 100 - i;
// On the native side, the slice is shortened by 19 bytes.
buf = libdeno.send(buf);
assert(buf.byteOffset === i * 11);
assert(buf.byteLength === abLen - i * 30 - 19);
assert(buf.buffer.byteLength == abLen);
// Look for values written by the backend.
assert(buf[0] === 200 + i);
assert(buf[buf.length - 1] === 200 - i);
// On the JS side, the start of the slice is moved up by 11 bytes.
buf = buf.subarray(11);
assert(buf.byteOffset === (i + 1) * 11);
assert(buf.byteLength === abLen - (i + 1) * 30);
}
};
global.JSSendArrayBufferViewTypes = () => {
// Test that ArrayBufferView slices are transferred correctly.
// Send Uint8Array.
const ab1 = new ArrayBuffer(4321);
const u8 = new Uint8Array(ab1, 2468, 1000);
u8[0] = 1;
libdeno.send(u8);
// Send Uint32Array.
const ab2 = new ArrayBuffer(4321);
const u32 = new Uint32Array(ab2, 2468, 1000 / Uint32Array.BYTES_PER_ELEMENT);
u32[0] = 0x02020202;
libdeno.send(u32);
// Send DataView.
const ab3 = new ArrayBuffer(4321);
const dv = new DataView(ab3, 2468, 1000);
dv.setUint8(0, 3);
libdeno.send(dv);
};
// The following join has caused SnapshotBug to segfault when using kKeep.
[].join("");
global.SnapshotBug = () => {
assert("1,2,3" === String([1, 2, 3]));
};
global.GlobalErrorHandling = () => {
libdeno.setGlobalErrorHandler((message, source, line, col, error) => {
libdeno.print(`line ${line} col ${col}`, true);
assert("ReferenceError: notdefined is not defined" === message);
assert(source === "helloworld.js");
assert(line === 3);
assert(col === 1);
assert(error instanceof Error);
libdeno.send(new Uint8Array([42]));
});
eval("\n\n notdefined()\n//# sourceURL=helloworld.js");
};
global.DoubleGlobalErrorHandlingFails = () => {
libdeno.setGlobalErrorHandler((message, source, line, col, error) => {});
libdeno.setGlobalErrorHandler((message, source, line, col, error) => {});
};
// Allocate this buf at the top level to avoid GC.
const dataBuf = new Uint8Array([3, 4]);
global.DataBuf = () => {
const a = new Uint8Array([1, 2]);
const b = dataBuf;
// The second parameter of send should modified by the
// privileged side.
const r = libdeno.send(a, b);
assert(r == null);
// b is different.
assert(b[0] === 4);
assert(b[1] === 2);
// Now we modify it again.
b[0] = 9;
b[1] = 8;
};
global.PromiseRejectCatchHandling = () => {
let count = 0;
let promiseRef = null;
// When we have an error, libdeno sends something
function assertOrSend(cond) {
if (!cond) {
libdeno.send(new Uint8Array([42]));
}
}
libdeno.setPromiseErrorExaminer(() => {
assertOrSend(count === 2);
});
libdeno.setPromiseRejectHandler((error, event, promise) => {
count++;
if (event === "RejectWithNoHandler") {
assertOrSend(error instanceof Error);
assertOrSend(error.message === "message");
assertOrSend(count === 1);
promiseRef = promise;
} else if (event === "HandlerAddedAfterReject") {
assertOrSend(count === 2);
assertOrSend(promiseRef === promise);
}
// Should never reach 3!
assertOrSend(count !== 3);
});
async function fn() {
throw new Error("message");
}
(async () => {
try {
await fn();
} catch (e) {
assertOrSend(count === 2);
}
})();
}
global.Shared = () => {
const ab = libdeno.shared;
assert(ab instanceof ArrayBuffer);
assert(ab.byteLength === 3);
const ui8 = new Uint8Array(ab);
assert(ui8[0] === 0);
assert(ui8[1] === 1);
assert(ui8[2] === 2);
ui8[0] = 42;
ui8[1] = 43;
ui8[2] = 44;
}
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