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denoland-deno/cli/js/tests/process_test.ts
2020-04-28 12:40:43 -04:00

384 lines
9.8 KiB
TypeScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import {
assert,
assertEquals,
assertStrContains,
unitTest,
} from "./test_util.ts";
const { kill, run, readFile, open, makeTempDir, writeFile } = Deno;
unitTest(function runPermissions(): void {
let caughtError = false;
try {
Deno.run({ cmd: ["python", "-c", "print('hello world')"] });
} catch (e) {
caughtError = true;
assert(e instanceof Deno.errors.PermissionDenied);
}
assert(caughtError);
});
unitTest({ perms: { run: true } }, async function runSuccess(): Promise<void> {
const p = run({
cmd: ["python", "-c", "print('hello world')"],
stdout: "piped",
stderr: "null",
});
const status = await p.status();
assertEquals(status.success, true);
assertEquals(status.code, 0);
assertEquals(status.signal, undefined);
p.stdout!.close();
p.close();
});
unitTest(
{ perms: { run: true } },
async function runCommandFailedWithCode(): Promise<void> {
const p = run({
cmd: ["python", "-c", "import sys;sys.exit(41 + 1)"],
});
const status = await p.status();
assertEquals(status.success, false);
assertEquals(status.code, 42);
assertEquals(status.signal, undefined);
p.close();
}
);
unitTest(
{
// No signals on windows.
ignore: Deno.build.os === "windows",
perms: { run: true },
},
async function runCommandFailedWithSignal(): Promise<void> {
const p = run({
cmd: ["python", "-c", "import os;os.kill(os.getpid(), 9)"],
});
const status = await p.status();
assertEquals(status.success, false);
assertEquals(status.code, undefined);
assertEquals(status.signal, 9);
p.close();
}
);
unitTest({ perms: { run: true } }, function runNotFound(): void {
let error;
try {
run({ cmd: ["this file hopefully doesn't exist"] });
} catch (e) {
error = e;
}
assert(error !== undefined);
assert(error instanceof Deno.errors.NotFound);
});
unitTest(
{ perms: { write: true, run: true } },
async function runWithCwdIsAsync(): Promise<void> {
const enc = new TextEncoder();
const cwd = await makeTempDir({ prefix: "deno_command_test" });
const exitCodeFile = "deno_was_here";
const pyProgramFile = "poll_exit.py";
const pyProgram = `
from sys import exit
from time import sleep
while True:
try:
with open("${exitCodeFile}", "r") as f:
line = f.readline()
code = int(line)
exit(code)
except IOError:
# Retry if we got here before deno wrote the file.
sleep(0.01)
pass
`;
Deno.writeFileSync(`${cwd}/${pyProgramFile}.py`, enc.encode(pyProgram));
const p = run({
cwd,
cmd: ["python", `${pyProgramFile}.py`],
});
// Write the expected exit code *after* starting python.
// This is how we verify that `run()` is actually asynchronous.
const code = 84;
Deno.writeFileSync(`${cwd}/${exitCodeFile}`, enc.encode(`${code}`));
const status = await p.status();
assertEquals(status.success, false);
assertEquals(status.code, code);
assertEquals(status.signal, undefined);
p.close();
}
);
unitTest({ perms: { run: true } }, async function runStdinPiped(): Promise<
void
> {
const p = run({
cmd: ["python", "-c", "import sys; assert 'hello' == sys.stdin.read();"],
stdin: "piped",
});
assert(p.stdin);
assert(!p.stdout);
assert(!p.stderr);
const msg = new TextEncoder().encode("hello");
const n = await p.stdin.write(msg);
assertEquals(n, msg.byteLength);
p.stdin!.close();
const status = await p.status();
assertEquals(status.success, true);
assertEquals(status.code, 0);
assertEquals(status.signal, undefined);
p.close();
});
unitTest({ perms: { run: true } }, async function runStdoutPiped(): Promise<
void
> {
const p = run({
cmd: ["python", "-c", "import sys; sys.stdout.write('hello')"],
stdout: "piped",
});
assert(!p.stdin);
assert(!p.stderr);
const data = new Uint8Array(10);
let r = await p.stdout!.read(data);
if (r === null) {
throw new Error("p.stdout.read(...) should not be null");
}
assertEquals(r, 5);
const s = new TextDecoder().decode(data.subarray(0, r));
assertEquals(s, "hello");
r = await p.stdout!.read(data);
assertEquals(r, null);
p.stdout!.close();
const status = await p.status();
assertEquals(status.success, true);
assertEquals(status.code, 0);
assertEquals(status.signal, undefined);
p.close();
});
unitTest({ perms: { run: true } }, async function runStderrPiped(): Promise<
void
> {
const p = run({
cmd: ["python", "-c", "import sys; sys.stderr.write('hello')"],
stderr: "piped",
});
assert(!p.stdin);
assert(!p.stdout);
const data = new Uint8Array(10);
let r = await p.stderr!.read(data);
if (r === null) {
throw new Error("p.stderr.read should not return null here");
}
assertEquals(r, 5);
const s = new TextDecoder().decode(data.subarray(0, r));
assertEquals(s, "hello");
r = await p.stderr!.read(data);
assertEquals(r, null);
p.stderr!.close();
const status = await p.status();
assertEquals(status.success, true);
assertEquals(status.code, 0);
assertEquals(status.signal, undefined);
p.close();
});
unitTest({ perms: { run: true } }, async function runOutput(): Promise<void> {
const p = run({
cmd: ["python", "-c", "import sys; sys.stdout.write('hello')"],
stdout: "piped",
});
const output = await p.output();
const s = new TextDecoder().decode(output);
assertEquals(s, "hello");
p.close();
});
unitTest({ perms: { run: true } }, async function runStderrOutput(): Promise<
void
> {
const p = run({
cmd: ["python", "-c", "import sys; sys.stderr.write('error')"],
stderr: "piped",
});
const error = await p.stderrOutput();
const s = new TextDecoder().decode(error);
assertEquals(s, "error");
p.close();
});
unitTest(
{ perms: { run: true, write: true, read: true } },
async function runRedirectStdoutStderr(): Promise<void> {
const tempDir = await makeTempDir();
const fileName = tempDir + "/redirected_stdio.txt";
const file = await open(fileName, {
create: true,
write: true,
});
const p = run({
cmd: [
"python",
"-c",
"import sys; sys.stderr.write('error\\n'); sys.stdout.write('output\\n');",
],
stdout: file.rid,
stderr: file.rid,
});
await p.status();
p.close();
file.close();
const fileContents = await readFile(fileName);
const decoder = new TextDecoder();
const text = decoder.decode(fileContents);
assertStrContains(text, "error");
assertStrContains(text, "output");
}
);
unitTest(
{ perms: { run: true, write: true, read: true } },
async function runRedirectStdin(): Promise<void> {
const tempDir = await makeTempDir();
const fileName = tempDir + "/redirected_stdio.txt";
const encoder = new TextEncoder();
await writeFile(fileName, encoder.encode("hello"));
const file = await open(fileName);
const p = run({
cmd: ["python", "-c", "import sys; assert 'hello' == sys.stdin.read();"],
stdin: file.rid,
});
const status = await p.status();
assertEquals(status.code, 0);
p.close();
file.close();
}
);
unitTest({ perms: { run: true } }, async function runEnv(): Promise<void> {
const p = run({
cmd: [
"python",
"-c",
"import os, sys; sys.stdout.write(os.environ.get('FOO', '') + os.environ.get('BAR', ''))",
],
env: {
FOO: "0123",
BAR: "4567",
},
stdout: "piped",
});
const output = await p.output();
const s = new TextDecoder().decode(output);
assertEquals(s, "01234567");
p.close();
});
unitTest({ perms: { run: true } }, async function runClose(): Promise<void> {
const p = run({
cmd: [
"python",
"-c",
"from time import sleep; import sys; sleep(10000); sys.stderr.write('error')",
],
stderr: "piped",
});
assert(!p.stdin);
assert(!p.stdout);
p.close();
const data = new Uint8Array(10);
const r = await p.stderr!.read(data);
assertEquals(r, null);
p.stderr!.close();
});
unitTest(function signalNumbers(): void {
if (Deno.build.os === "darwin") {
assertEquals(Deno.Signal.SIGSTOP, 17);
} else if (Deno.build.os === "linux") {
assertEquals(Deno.Signal.SIGSTOP, 19);
}
});
// Ignore signal tests on windows for now...
if (Deno.build.os !== "windows") {
unitTest(function killPermissions(): void {
let caughtError = false;
try {
// Unlike the other test cases, we don't have permission to spawn a
// subprocess we can safely kill. Instead we send SIGCONT to the current
// process - assuming that Deno does not have a special handler set for it
// and will just continue even if a signal is erroneously sent.
Deno.kill(Deno.pid, Deno.Signal.SIGCONT);
} catch (e) {
caughtError = true;
assert(e instanceof Deno.errors.PermissionDenied);
}
assert(caughtError);
});
unitTest({ perms: { run: true } }, async function killSuccess(): Promise<
void
> {
const p = run({
cmd: ["python", "-c", "from time import sleep; sleep(10000)"],
});
assertEquals(Deno.Signal.SIGINT, 2);
kill(p.pid, Deno.Signal.SIGINT);
const status = await p.status();
assertEquals(status.success, false);
// TODO(ry) On Linux, status.code is sometimes undefined and sometimes 1.
// The following assert is causing this test to be flaky. Investigate and
// re-enable when it can be made deterministic.
// assertEquals(status.code, 1);
// assertEquals(status.signal, Deno.Signal.SIGINT);
p.close();
});
unitTest({ perms: { run: true } }, function killFailed(): void {
const p = run({
cmd: ["python", "-c", "from time import sleep; sleep(10000)"],
});
assert(!p.stdin);
assert(!p.stdout);
let err;
try {
kill(p.pid, 12345);
} catch (e) {
err = e;
}
assert(!!err);
assert(err instanceof TypeError);
p.close();
});
}