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cli.test.ts
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882 lines (757 loc) · 26.1 KB
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import { Level, logger } from "@coder/logger"
import { promises as fs } from "fs"
import * as net from "net"
import * as os from "os"
import * as path from "path"
import {
UserProvidedArgs,
bindAddrFromArgs,
defaultConfigFile,
parse,
readSocketPath,
setDefaults,
shouldOpenInExistingInstance,
splitOnFirstEquals,
toCodeArgs,
optionDescriptions,
options,
Options,
AuthType,
OptionalString,
} from "../../../src/node/cli"
import { shouldSpawnCliProcess } from "../../../src/node/main"
import { generatePassword, paths } from "../../../src/node/util"
import { clean, useEnv, tmpdir } from "../../utils/helpers"
// The parser should not set any defaults so the caller can determine what
// values the user actually set. These are only set after explicitly calling
// `setDefaults`.
const defaults = {
auth: "password",
host: "localhost",
port: 8080,
"proxy-domain": [],
usingEnvPassword: false,
usingEnvHashedPassword: false,
"extensions-dir": path.join(paths.data, "extensions"),
"user-data-dir": paths.data,
_: [],
}
describe("parser", () => {
beforeEach(() => {
delete process.env.LOG_LEVEL
delete process.env.PASSWORD
delete process.env.CS_DISABLE_FILE_DOWNLOADS
console.log = jest.fn()
})
it("should parse nothing", async () => {
expect(parse([])).toStrictEqual({})
})
it("should parse all available options", async () => {
expect(
parse(
[
["--enable", "feature1"],
["--enable", "feature2"],
"--bind-addr=192.169.0.1:8080",
["--auth", "none"],
["--extensions-dir", "path/to/ext/dir"],
["--builtin-extensions-dir", "path/to/builtin/ext/dir"],
"1",
"--verbose",
"2",
["--locale", "ja"],
["--log", "error"],
"--help",
"--open",
"--socket=mumble",
"--socket-mode=777",
"3",
["--user-data-dir", "path/to/user/dir"],
["--cert=path/to/cert", "--cert-key", "path/to/cert/key"],
"--version",
"--json",
"--port=8081",
"--disable-file-downloads",
["--host", "0.0.0.0"],
"4",
"--",
"--5",
].flat(),
),
).toEqual({
_: ["1", "2", "3", "4", "--5"],
auth: "none",
"builtin-extensions-dir": path.resolve("path/to/builtin/ext/dir"),
"extensions-dir": path.resolve("path/to/ext/dir"),
"user-data-dir": path.resolve("path/to/user/dir"),
"cert-key": path.resolve("path/to/cert/key"),
cert: {
value: path.resolve("path/to/cert"),
},
"disable-file-downloads": true,
enable: ["feature1", "feature2"],
help: true,
host: "0.0.0.0",
json: true,
locale: "ja",
log: "error",
open: true,
port: 8081,
socket: path.resolve("mumble"),
"socket-mode": "777",
verbose: true,
version: true,
"bind-addr": "192.169.0.1:8080",
})
})
it("should work with short options", async () => {
expect(parse(["-vvv", "-v"])).toEqual({
verbose: true,
version: true,
})
})
it("should use log level env var", async () => {
const args = parse([])
expect(args).toEqual({})
process.env.LOG_LEVEL = "debug"
const defaults = await setDefaults(args)
expect(defaults).toStrictEqual({
...defaults,
log: "debug",
verbose: false,
})
expect(process.env.LOG_LEVEL).toEqual("debug")
expect(logger.level).toEqual(Level.Debug)
process.env.LOG_LEVEL = "trace"
const updated = await setDefaults(args)
expect(updated).toStrictEqual({
...updated,
log: "trace",
verbose: true,
})
expect(process.env.LOG_LEVEL).toEqual("trace")
expect(logger.level).toEqual(Level.Trace)
})
it("should prefer --log to env var and --verbose to --log", async () => {
let args = parse(["--log", "info"])
expect(args).toEqual({
log: "info",
})
process.env.LOG_LEVEL = "debug"
const defaults = await setDefaults(args)
expect(defaults).toEqual({
...defaults,
log: "info",
verbose: false,
})
expect(process.env.LOG_LEVEL).toEqual("info")
expect(logger.level).toEqual(Level.Info)
process.env.LOG_LEVEL = "trace"
const updated = await setDefaults(args)
expect(updated).toEqual({
...defaults,
log: "info",
verbose: false,
})
expect(process.env.LOG_LEVEL).toEqual("info")
expect(logger.level).toEqual(Level.Info)
args = parse(["--log", "info", "--verbose"])
expect(args).toEqual({
log: "info",
verbose: true,
})
process.env.LOG_LEVEL = "warn"
const updatedAgain = await setDefaults(args)
expect(updatedAgain).toEqual({
...defaults,
log: "trace",
verbose: true,
})
expect(process.env.LOG_LEVEL).toEqual("trace")
expect(logger.level).toEqual(Level.Trace)
})
it("should set valid log level env var", async () => {
process.env.LOG_LEVEL = "error"
const defaults = await setDefaults(parse([]))
expect(defaults).toEqual({
...defaults,
log: "error",
})
})
it("should ignore invalid log level env var", async () => {
process.env.LOG_LEVEL = "bogus"
const defaults = await setDefaults(parse([]))
expect(defaults).toEqual({
...defaults,
})
})
it("should error if value isn't provided", () => {
expect(() => parse(["--auth"])).toThrowError(/--auth requires a value/)
expect(() => parse(["--auth=", "--log=debug"])).toThrowError(/--auth requires a value/)
expect(() => parse(["--auth", "--log"])).toThrowError(/--auth requires a value/)
expect(() => parse(["--auth", "--invalid"])).toThrowError(/--auth requires a value/)
expect(() => parse(["--bind-addr"])).toThrowError(/--bind-addr requires a value/)
})
it("should error if value is invalid", () => {
expect(() => parse(["--port", "foo"])).toThrowError(/--port must be a number/)
expect(() => parse(["--auth", "invalid"])).toThrowError(/--auth valid values: \[password, none\]/)
expect(() => parse(["--log", "invalid"])).toThrowError(/--log valid values: \[trace, debug, info, warn, error\]/)
})
it("should error if the option doesn't exist", () => {
expect(() => parse(["--foo"])).toThrowError(/Unknown option --foo/)
})
it("should not error if the value is optional", async () => {
expect(parse(["--cert"])).toEqual({
cert: {
value: undefined,
},
})
})
it("should not allow option-like values", () => {
expect(() => parse(["--socket", "--socket-path-value"])).toThrowError(/--socket requires a value/)
// If you actually had a path like this you would do this instead:
expect(parse(["--socket", "./--socket-path-value"])).toEqual({
socket: path.resolve("--socket-path-value"),
})
expect(() => parse(["--cert", "--socket-path-value"])).toThrowError(/Unknown option --socket-path-value/)
})
it("should allow positional arguments before options", async () => {
expect(parse(["test", "--auth", "none"])).toEqual({
_: ["test"],
auth: "none",
})
})
it("should support repeatable flags", async () => {
expect(parse(["--proxy-domain", "*.coder.com"])).toEqual({
"proxy-domain": ["*.coder.com"],
})
expect(parse(["--proxy-domain", "*.coder.com", "--proxy-domain", "test.com"])).toEqual({
"proxy-domain": ["*.coder.com", "test.com"],
})
})
it("should enforce cert-key with cert value or otherwise generate one", async () => {
const args = parse(["--cert"])
expect(args).toEqual({
cert: {
value: undefined,
},
})
expect(() => parse(["--cert", "test"])).toThrowError(/--cert-key is missing/)
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
cert: {
value: path.join(paths.data, "localhost.crt"),
},
"cert-key": path.join(paths.data, "localhost.key"),
})
})
it("should override with --link", async () => {
const args = parse(
"--cert test --cert-key test --socket test --socket-mode 777 --host 0.0.0.0 --port 8888 --link test".split(" "),
)
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
auth: "none",
host: "localhost",
link: {
value: "test",
},
port: 0,
cert: undefined,
"cert-key": path.resolve("test"),
socket: undefined,
"socket-mode": undefined,
})
})
it("should use env var password", async () => {
process.env.PASSWORD = "test"
const args = parse([])
expect(args).toEqual({})
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
password: "test",
usingEnvPassword: true,
})
})
it("should use env var hashed password", async () => {
process.env.HASHED_PASSWORD =
"$argon2i$v=19$m=4096,t=3,p=1$0qR/o+0t00hsbJFQCKSfdQ$oFcM4rL6o+B7oxpuA4qlXubypbBPsf+8L531U7P9HYY" // test
const args = parse([])
expect(args).toEqual({})
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
"hashed-password":
"$argon2i$v=19$m=4096,t=3,p=1$0qR/o+0t00hsbJFQCKSfdQ$oFcM4rL6o+B7oxpuA4qlXubypbBPsf+8L531U7P9HYY",
usingEnvHashedPassword: true,
})
})
it("should use env var github token", async () => {
process.env.GITHUB_TOKEN = "ga-foo"
const args = parse([])
expect(args).toEqual({})
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
"github-auth": "ga-foo",
})
expect(process.env.GITHUB_TOKEN).toBe(undefined)
})
it("should use env var CS_DISABLE_FILE_DOWNLOADS", async () => {
process.env.CS_DISABLE_FILE_DOWNLOADS = "1"
const args = parse([])
expect(args).toEqual({})
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
"disable-file-downloads": true,
})
})
it("should use env var CS_DISABLE_FILE_DOWNLOADS set to true", async () => {
process.env.CS_DISABLE_FILE_DOWNLOADS = "true"
const args = parse([])
expect(args).toEqual({})
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
"disable-file-downloads": true,
})
})
it("should error if password passed in", () => {
expect(() => parse(["--password", "supersecret123"])).toThrowError(
"--password can only be set in the config file or passed in via $PASSWORD",
)
})
it("should error if hashed-password passed in", () => {
expect(() => parse(["--hashed-password", "fdas423fs8a"])).toThrowError(
"--hashed-password can only be set in the config file or passed in via $HASHED_PASSWORD",
)
})
it("should error if github-auth passed in", () => {
expect(() => parse(["--github-auth", "fdas423fs8a"])).toThrowError(
"--github-auth can only be set in the config file or passed in via $GITHUB_TOKEN",
)
})
it("should filter proxy domains", async () => {
const args = parse(["--proxy-domain", "*.coder.com", "--proxy-domain", "coder.com", "--proxy-domain", "coder.org"])
expect(args).toEqual({
"proxy-domain": ["*.coder.com", "coder.com", "coder.org"],
})
const defaultArgs = await setDefaults(args)
expect(defaultArgs).toEqual({
...defaults,
"proxy-domain": ["coder.com", "coder.org"],
})
})
it("should allow '=,$/' in strings", async () => {
const args = parse([
"--disable-update-check",
"$argon2i$v=19$m=4096,t=3,p=1$0qr/o+0t00hsbjfqcksfdq$ofcm4rl6o+b7oxpua4qlxubypbbpsf+8l531u7p9hyy",
])
expect(args).toEqual({
"disable-update-check": true,
_: ["$argon2i$v=19$m=4096,t=3,p=1$0qr/o+0t00hsbjfqcksfdq$ofcm4rl6o+b7oxpua4qlxubypbbpsf+8l531u7p9hyy"],
})
})
it("should parse options with double-dash and multiple equal signs ", async () => {
const args = parse(
[
"--hashed-password=$argon2i$v=19$m=4096,t=3,p=1$0qr/o+0t00hsbjfqcksfdq$ofcm4rl6o+b7oxpua4qlxubypbbpsf+8l531u7p9hyy",
],
{
configFile: "/pathtoconfig",
},
)
expect(args).toEqual({
"hashed-password":
"$argon2i$v=19$m=4096,t=3,p=1$0qr/o+0t00hsbjfqcksfdq$ofcm4rl6o+b7oxpua4qlxubypbbpsf+8l531u7p9hyy",
})
})
it("should throw an error for invalid config values", async () => {
const fakePath = "/fake-config-path"
const expectedErrMsg = `error reading ${fakePath}: `
expect(() =>
parse(["--foo"], {
configFile: fakePath,
}),
).toThrowError(expectedErrMsg)
})
it("should ignore optional strings set to false", async () => {
expect(parse(["--cert=false"])).toEqual({})
})
it("should use last flag", async () => {
expect(parse(["--port", "8081", "--port", "8082"])).toEqual({
port: 8082,
})
})
})
describe("cli", () => {
const testName = "cli"
const vscodeIpcPath = path.join(os.tmpdir(), "vscode-ipc")
beforeAll(async () => {
await clean(testName)
})
beforeEach(async () => {
delete process.env.VSCODE_IPC_HOOK_CLI
await fs.rm(vscodeIpcPath, { force: true, recursive: true })
})
it("should use existing if inside code-server", async () => {
process.env.VSCODE_IPC_HOOK_CLI = "test"
const args: UserProvidedArgs = {}
expect(await shouldOpenInExistingInstance(args)).toStrictEqual("test")
args.port = 8081
args._ = ["./file"]
expect(await shouldOpenInExistingInstance(args)).toStrictEqual("test")
})
it("should use existing if --reuse-window is set", async () => {
const args: UserProvidedArgs = {}
args["reuse-window"] = true
await expect(shouldOpenInExistingInstance(args)).resolves.toStrictEqual(undefined)
await fs.writeFile(vscodeIpcPath, "test")
await expect(shouldOpenInExistingInstance(args)).resolves.toStrictEqual("test")
args.port = 8081
await expect(shouldOpenInExistingInstance(args)).resolves.toStrictEqual("test")
})
it("should use existing if --new-window is set", async () => {
const args: UserProvidedArgs = {}
args["new-window"] = true
expect(await shouldOpenInExistingInstance(args)).toStrictEqual(undefined)
await fs.writeFile(vscodeIpcPath, "test")
expect(await shouldOpenInExistingInstance(args)).toStrictEqual("test")
args.port = 8081
expect(await shouldOpenInExistingInstance(args)).toStrictEqual("test")
})
it("should use existing if no unrelated flags are set, has positional, and socket is active", async () => {
const args: UserProvidedArgs = {}
expect(await shouldOpenInExistingInstance(args)).toStrictEqual(undefined)
args._ = ["./file"]
expect(await shouldOpenInExistingInstance(args)).toStrictEqual(undefined)
const testDir = await tmpdir(testName)
const socketPath = path.join(testDir, "socket")
await fs.writeFile(vscodeIpcPath, socketPath)
expect(await shouldOpenInExistingInstance(args)).toStrictEqual(undefined)
await new Promise((resolve) => {
const server = net.createServer(() => {
// Close after getting the first connection.
server.close()
})
server.once("listening", () => resolve(server))
server.listen(socketPath)
})
expect(await shouldOpenInExistingInstance(args)).toStrictEqual(socketPath)
args.port = 8081
expect(await shouldOpenInExistingInstance(args)).toStrictEqual(undefined)
})
})
describe("splitOnFirstEquals", () => {
it("should split on the first equals", () => {
const testStr = "enabled-proposed-api=test=value"
const actual = splitOnFirstEquals(testStr)
const expected = ["enabled-proposed-api", "test=value"]
expect(actual).toEqual(expect.arrayContaining(expected))
})
it("should split on first equals regardless of multiple equals signs", () => {
const testStr =
"hashed-password=$argon2i$v=19$m=4096,t=3,p=1$0qR/o+0t00hsbJFQCKSfdQ$oFcM4rL6o+B7oxpuA4qlXubypbBPsf+8L531U7P9HYY"
const actual = splitOnFirstEquals(testStr)
const expected = [
"hashed-password",
"$argon2i$v=19$m=4096,t=3,p=1$0qR/o+0t00hsbJFQCKSfdQ$oFcM4rL6o+B7oxpuA4qlXubypbBPsf+8L531U7P9HYY",
]
expect(actual).toEqual(expect.arrayContaining(expected))
})
it("should always return the first element before an equals", () => {
const testStr = "auth="
const actual = splitOnFirstEquals(testStr)
const expected = ["auth"]
expect(actual).toEqual(expect.arrayContaining(expected))
})
})
describe("shouldSpawnCliProcess", () => {
it("should return false if no 'extension' related args passed in", async () => {
const args = {}
const actual = await shouldSpawnCliProcess(args)
const expected = false
expect(actual).toBe(expected)
})
it("should return true if 'list-extensions' passed in", async () => {
const args = {
["list-extensions"]: true,
}
const actual = await shouldSpawnCliProcess(args)
const expected = true
expect(actual).toBe(expected)
})
it("should return true if 'install-extension' passed in", async () => {
const args = {
["install-extension"]: ["hello.world"],
}
const actual = await shouldSpawnCliProcess(args)
const expected = true
expect(actual).toBe(expected)
})
it("should return true if 'uninstall-extension' passed in", async () => {
const args: UserProvidedArgs = {
["uninstall-extension"]: ["hello.world"],
}
const actual = await shouldSpawnCliProcess(args)
const expected = true
expect(actual).toBe(expected)
})
})
describe("bindAddrFromArgs", () => {
it("should return the bind address", () => {
const args: UserProvidedArgs = {}
const addr = {
host: "localhost",
port: 8080,
}
const actual = bindAddrFromArgs(addr, args)
const expected = addr
expect(actual).toStrictEqual(expected)
})
it("should use the bind-address if set in args", () => {
const args: UserProvidedArgs = {
["bind-addr"]: "localhost:3000",
}
const addr = {
host: "localhost",
port: 8080,
}
const actual = bindAddrFromArgs(addr, args)
const expected = {
host: "localhost",
port: 3000,
}
expect(actual).toStrictEqual(expected)
})
it("should use the host if set in args", () => {
const args: UserProvidedArgs = {
["host"]: "coder",
}
const addr = {
host: "localhost",
port: 8080,
}
const actual = bindAddrFromArgs(addr, args)
const expected = {
host: "coder",
port: 8080,
}
expect(actual).toStrictEqual(expected)
})
it("should use process.env.PORT if set", () => {
const [setValue, resetValue] = useEnv("PORT")
setValue("8000")
const args: UserProvidedArgs = {}
const addr = {
host: "localhost",
port: 8080,
}
const actual = bindAddrFromArgs(addr, args)
const expected = {
host: "localhost",
port: 8000,
}
expect(actual).toStrictEqual(expected)
resetValue()
})
it("should set port if in args", () => {
const args: UserProvidedArgs = {
port: 3000,
}
const addr = {
host: "localhost",
port: 8080,
}
const actual = bindAddrFromArgs(addr, args)
const expected = {
host: "localhost",
port: 3000,
}
expect(actual).toStrictEqual(expected)
})
it("should use the args.port over process.env.PORT if both set", () => {
const [setValue, resetValue] = useEnv("PORT")
setValue("8000")
const args: UserProvidedArgs = {
port: 3000,
}
const addr = {
host: "localhost",
port: 8080,
}
const actual = bindAddrFromArgs(addr, args)
const expected = {
host: "localhost",
port: 3000,
}
expect(actual).toStrictEqual(expected)
resetValue()
})
})
describe("defaultConfigFile", () => {
it("should return the default config file as a string", async () => {
const password = await generatePassword()
const actual = defaultConfigFile(password)
expect(actual).toMatch(`bind-addr: 127.0.0.1:8080
auth: password
password: ${password}
cert: false`)
})
})
describe("readSocketPath", () => {
const fileContents = "readSocketPath file contents"
let tmpDirPath: string
let tmpFilePath: string
const testName = "readSocketPath"
beforeAll(async () => {
await clean(testName)
})
beforeEach(async () => {
tmpDirPath = await tmpdir(testName)
tmpFilePath = path.join(tmpDirPath, "readSocketPath.txt")
await fs.writeFile(tmpFilePath, fileContents)
})
it("should throw an error if it can't read the file", async () => {
// TODO@jsjoeio - implement
// Test it on a directory.... ESDIR
// TODO@jsjoeio - implement
expect(() => readSocketPath(tmpDirPath)).rejects.toThrow("EISDIR")
})
it("should return undefined if it can't read the file", async () => {
// TODO@jsjoeio - implement
const socketPath = await readSocketPath(path.join(tmpDirPath, "not-a-file"))
expect(socketPath).toBeUndefined()
})
it("should return the file contents", async () => {
const contents = await readSocketPath(tmpFilePath)
expect(contents).toBe(fileContents)
})
it("should return the same file contents for two different calls", async () => {
const contents1 = await readSocketPath(tmpFilePath)
const contents2 = await readSocketPath(tmpFilePath)
expect(contents2).toBe(contents1)
})
})
describe("toCodeArgs", () => {
const vscodeDefaults = {
...defaults,
"accept-server-license-terms": true,
compatibility: "1.64",
help: false,
port: "8080",
version: false,
}
const testName = "vscode-args"
beforeAll(async () => {
// Clean up temporary directories from the previous run.
await clean(testName)
})
it("should convert empty args", async () => {
expect(await toCodeArgs(await setDefaults(parse([])))).toStrictEqual({
...vscodeDefaults,
})
})
it("should ignore regular file", async () => {
const file = path.join(await tmpdir(testName), "file")
await fs.writeFile(file, "foobar")
expect(await toCodeArgs(await setDefaults(parse([file])))).toStrictEqual({
...vscodeDefaults,
_: [file],
})
})
})
describe("optionDescriptions", () => {
it("should return the descriptions of all the available options", () => {
const expectedOptionDescriptions = Object.entries(options)
.flat()
.filter((item: any) => {
if (item.description) {
return item.description
}
})
.map((item: any) => item.description)
const actualOptionDescriptions = optionDescriptions()
// We need both the expected and the actual
// Both of these are string[]
// We then loop through the expectedOptionDescriptions
// and check that this expectedDescription exists in the
// actualOptionDescriptions
// To do that we need to loop through actualOptionDescriptions
// and make sure we have a substring match
expectedOptionDescriptions.forEach((expectedDescription) => {
const exists = actualOptionDescriptions.find((desc) => {
if (
desc.replace(/\n/g, " ").replace(/ /g, "").includes(expectedDescription.replace(/\n/g, " ").replace(/ /g, ""))
) {
return true
}
return false
})
expect(exists).toBeTruthy()
})
})
it("should visually align multiple options", () => {
const opts: Partial<Options<Required<UserProvidedArgs>>> = {
"cert-key": { type: "string", path: true, description: "Path to certificate key when using non-generated cert." },
"cert-host": {
type: "string",
description: "Hostname to use when generating a self signed certificate.",
},
"disable-update-check": {
type: "boolean",
description:
"Disable update check. Without this flag, code-server checks every 6 hours against the latest github release and \n" +
"then notifies you once every week that a new release is available.",
},
}
expect(optionDescriptions(opts)).toStrictEqual([
" --cert-key Path to certificate key when using non-generated cert.",
" --cert-host Hostname to use when generating a self signed certificate.",
` --disable-update-check Disable update check. Without this flag, code-server checks every 6 hours against the latest github release and
then notifies you once every week that a new release is available.`,
])
})
it("should add all valid options for enumerated types", () => {
const opts: Partial<Options<Required<UserProvidedArgs>>> = {
auth: { type: AuthType, description: "The type of authentication to use." },
}
expect(optionDescriptions(opts)).toStrictEqual([" --auth The type of authentication to use. [password, none]"])
})
it("should show if an option is deprecated", () => {
const opts: Partial<Options<Required<UserProvidedArgs>>> = {
link: {
type: OptionalString,
description: `
Securely bind code-server via our cloud service with the passed name. You'll get a URL like
https://hostname-username.coder.co at which you can easily access your code-server instance.
Authorization is done via GitHub.
`,
deprecated: true,
},
}
expect(optionDescriptions(opts)).toStrictEqual([
` --link (deprecated) Securely bind code-server via our cloud service with the passed name. You'll get a URL like
https://hostname-username.coder.co at which you can easily access your code-server instance.
Authorization is done via GitHub.`,
])
})
it("should show newlines in description", () => {
const opts: Partial<Options<Required<UserProvidedArgs>>> = {
"install-extension": {
type: "string[]",
description:
"Install or update a VS Code extension by id or vsix. The identifier of an extension is `${publisher}.${name}`.\n" +
"To install a specific version provide `@${version}`. For example: 'vscode.csharp@1.2.3'.",
},
}
expect(optionDescriptions(opts)).toStrictEqual([
` --install-extension Install or update a VS Code extension by id or vsix. The identifier of an extension is \`\${publisher}.\${name}\`.
To install a specific version provide \`@\${version}\`. For example: 'vscode.csharp@1.2.3'.`,
])
})
})