feat: more tests

src/bin/index.ts

@@ -1,6 +1,7 @@
 import * as prompts from "@clack/prompts";
 import chalk from "chalk";
 import ci from "ci-info";
+import path from "node:path";
 import { parseArgs } from "node:util";
 import { fromZodError } from "zod-validation-error";
 
@@ -97,7 +98,9 @@ export async function bin(args: string[]) {
 	try {
 		const parsedProjectNpmrc = await withSpinner(`Parsing project .npmrc`, () =>
 			parseProjectNpmrc({
-				config,
+				npmrcPath: config
+					? path.resolve(config)
+					: path.resolve(process.cwd(), ".npmrc"),
 				logger,
 			}),
 		);

src/parseProjectNpmrc.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { parseProjectNpmrc } from "./parseProjectNpmrc.js";
+
+const mockReadFile = vi.fn();
+
+vi.mock("./shared/readFileSafe.js", () => ({
+	get readFileSafe() {
+		return mockReadFile;
+	},
+}));
+
+describe("parseProjectNpmrc", () => {
+	it("outputs the expected structure on successful parse", async () => {
+		mockReadFile.mockResolvedValue(`registry=https://pkgs.dev.azure.com/johnnyreilly/_packaging/npmrc-script-organization/npm/registry/ 
+                        
+always-auth=true`);
+		const result = await parseProjectNpmrc({
+			npmrcPath: "/home/john/code/github/ado-npm-auth-lite/.npmrc",
+		});
+		expect(result).toEqual({
+			organisation: "johnnyreilly",
+			urlWithoutRegistryAtEnd:
+				"//pkgs.dev.azure.com/johnnyreilly/_packaging/npmrc-script-organization/npm/",
+			urlWithoutRegistryAtStart:
+				"//pkgs.dev.azure.com/johnnyreilly/_packaging/npmrc-script-organization/npm/registry/",
+		});
+	});
+
+	it("errors on invalid content", async () => {
+		mockReadFile.mockResolvedValue(`stuff`);
+		await expect(() =>
+			parseProjectNpmrc({
+				npmrcPath: "/home/john/code/github/ado-npm-auth-lite/.npmrc",
+			}),
+		).rejects.toThrowError("Unable to extract information from project .npmrc");
+	});
+});

src/parseProjectNpmrc.ts

@@ -1,5 +1,3 @@
-import path from "node:path";
-
 import { fallbackLogger, type Logger } from "./logger.js";
 import { readFileSafe } from "./shared/readFileSafe.js";
 
@@ -13,16 +11,12 @@ export interface ParsedProjectNpmrc {
  * Read the project .npmrc file to acquire necessary info
  */
 export async function parseProjectNpmrc({
-	config,
+	npmrcPath,
 	logger = fallbackLogger,
 }: {
-	config?: string | undefined;
+	npmrcPath: string;
 	logger?: Logger;
 }): Promise<ParsedProjectNpmrc> {
-	const npmrcPath = config
-		? path.resolve(config)
-		: path.resolve(process.cwd(), ".npmrc");
-
 	logger.info(`Loading .npmrc at: ${npmrcPath}`);
 
 	const npmrcContents = await readFileSafe(npmrcPath, "");