code-server/test/util.test.ts

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// Note: we need to import logger from the root
// because this is the logger used in logError in ../src/common/util
import { logger } from "../node_modules/@coder/logger"
import {
arrayify,
getFirstString,
logError,
normalize,
plural,
resolveBase,
split,
trimSlashes,
} from "../src/common/util"
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type LocationLike = Pick<Location, "pathname" | "origin">
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describe("util", () => {
describe("normalize", () => {
it("should remove multiple slashes", () => {
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expect(normalize("//foo//bar//baz///mumble")).toBe("/foo/bar/baz/mumble")
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})
it("should remove trailing slashes", () => {
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expect(normalize("qux///")).toBe("qux")
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})
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it("should preserve trailing slash if it exists", () => {
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expect(normalize("qux///", true)).toBe("qux/")
expect(normalize("qux", true)).toBe("qux")
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})
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})
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describe("split", () => {
it("should split at a comma", () => {
expect(split("Hello,world", ",")).toStrictEqual(["Hello", "world"])
})
it("shouldn't split if the delimiter doesn't exist", () => {
expect(split("Hello world", ",")).toStrictEqual(["Hello world", ""])
})
})
describe("plural", () => {
it("should add an s if count is greater than 1", () => {
expect(plural(2, "dog")).toBe("dogs")
})
it("should NOT add an s if the count is 1", () => {
expect(plural(1, "dog")).toBe("dog")
})
})
describe("trimSlashes", () => {
it("should remove leading slashes", () => {
expect(trimSlashes("/hello-world")).toBe("hello-world")
})
it("should remove trailing slashes", () => {
expect(trimSlashes("hello-world/")).toBe("hello-world")
})
it("should remove both leading and trailing slashes", () => {
expect(trimSlashes("/hello-world/")).toBe("hello-world")
})
it("should remove multiple leading and trailing slashes", () => {
expect(trimSlashes("///hello-world////")).toBe("hello-world")
})
})
describe("resolveBase", () => {
beforeEach(() => {
const location: LocationLike = {
pathname: "/healthz",
origin: "http://localhost:8080",
}
// Because resolveBase is not a pure function
// and relies on the global location to be set
// we set it before all the tests
// and tell TS that our location should be looked at
// as Location (even though it's missing some properties)
global.location = location as Location
})
it("should resolve a base", () => {
expect(resolveBase("localhost:8080")).toBe("/localhost:8080")
})
it("should resolve a base with a forward slash at the beginning", () => {
expect(resolveBase("/localhost:8080")).toBe("/localhost:8080")
})
it("should resolve a base with query params", () => {
expect(resolveBase("localhost:8080?folder=hello-world")).toBe("/localhost:8080")
})
it("should resolve a base with a path", () => {
expect(resolveBase("localhost:8080/hello/world")).toBe("/localhost:8080/hello/world")
})
it("should resolve a base to an empty string when not provided", () => {
expect(resolveBase()).toBe("")
})
})
describe("arrayify", () => {
it("should return value it's already an array", () => {
expect(arrayify(["hello", "world"])).toStrictEqual(["hello", "world"])
})
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it("should wrap the value in an array if not an array", () => {
expect(
arrayify({
name: "Coder",
version: "3.8",
}),
).toStrictEqual([{ name: "Coder", version: "3.8" }])
})
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it("should return an empty array if the value is undefined", () => {
expect(arrayify(undefined)).toStrictEqual([])
})
})
describe("getFirstString", () => {
it("should return the string if passed a string", () => {
expect(getFirstString("Hello world!")).toBe("Hello world!")
})
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it("should get the first string from an array", () => {
expect(getFirstString(["Hello", "World"])).toBe("Hello")
})
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it("should return undefined if the value isn't an array or a string", () => {
expect(getFirstString({ name: "Coder" })).toBe(undefined)
})
})
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describe("logError", () => {
let spy: jest.SpyInstance
beforeEach(() => {
spy = jest.spyOn(logger, "error")
})
afterEach(() => {
jest.clearAllMocks()
})
afterAll(() => {
jest.restoreAllMocks()
})
it("should log an error with the message and stack trace", () => {
const message = "You don't have access to that folder."
const error = new Error(message)
logError("ui", error)
expect(spy).toHaveBeenCalled()
expect(spy).toHaveBeenCalledWith(`ui: ${error.message} ${error.stack}`)
})
it("should log an error, even if not an instance of error", () => {
logError("api", "oh no")
expect(spy).toHaveBeenCalled()
expect(spy).toHaveBeenCalledWith("api: oh no")
})
})
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})