cloudflare--workers-sdk/packages/workers-utils/tests/config/validation/isDockerFile.test.ts

import { mkdirSync, writeFileSync } from "node:fs";
import { beforeEach, describe, it } from "vitest";
import { isDockerfile } from "../../../src/config/validation";
import { runInTempDir } from "../../../src/test-helpers";

describe("isDockerfile", () => {
	const dockerfile =
		'FROM node:18\nWORKDIR /app\nCOPY . .\nRUN npm install\nCMD ["node", "index.js"]';

	runInTempDir();

	beforeEach(() => {
		mkdirSync("./container-context");
		writeFileSync("./container-context/Dockerfile", dockerfile);
	});

	it("should return true if given a valid dockerfile path", async ({
		expect,
	}) => {
		expect(isDockerfile("./container-context/Dockerfile", undefined)).toBe(
			true
		);
	});

	it("should find a dockerfile relative to the wrangler config path", async ({
		expect,
	}) => {
		expect(
			isDockerfile("./Dockerfile", "./container-context/wrangler.json")
		).toBe(true);
	});

	it("should return false if given a valid image registry path", async ({
		expect,
	}) => {
		expect(isDockerfile("docker.io/httpd:1", undefined)).toBe(false);
	});

	it("should error if given a non existent dockerfile", async ({ expect }) => {
		expect(() => isDockerfile("./FakeDockerfile", undefined))
			.toThrowErrorMatchingInlineSnapshot(`
				[Error: The image "./FakeDockerfile" does not appear to be a valid path to a Dockerfile, or a valid image registry path:
				If this is an image registry path, it needs to include at least a tag ':' (e.g: docker.io/httpd:1)]
			`);
	});

	it("should error if given a directory instead of a dockerfile", async ({
		expect,
	}) => {
		expect(() => isDockerfile("./container-context", undefined))
			.toThrowErrorMatchingInlineSnapshot(`
			[Error: ./container-context is a directory, you should specify a path to the Dockerfile]
		`);
	});

	it("should error if image registry reference contains the protocol part", async ({
		expect,
	}) => {
		expect(() =>
			isDockerfile("http://registry.cloudflare.com/image:tag", undefined)
		).toThrowErrorMatchingInlineSnapshot(`
			[Error: The image "http://registry.cloudflare.com/image:tag" does not appear to be a valid path to a Dockerfile, or a valid image registry path:
			Image reference should not include the protocol part (e.g: docker.io/httpd:1, not https://docker.io/httpd:1)]
		`);
	});

	it("should error if image registry reference does not contain a tag", async ({
		expect,
	}) => {
		expect(() => isDockerfile("docker.io/httpd", undefined))
			.toThrowErrorMatchingInlineSnapshot(`
				[Error: The image "docker.io/httpd" does not appear to be a valid path to a Dockerfile, or a valid image registry path:
				If this is an image registry path, it needs to include at least a tag ':' (e.g: docker.io/httpd:1)]
			`);
	});
});