test(main): add test coverage for main 🎉 🎉

Author: skovy

__tests__/main.test.ts

@@ -0,0 +1,32 @@
+import fs from "fs";
+
+import { main } from "../lib/main";
+
+describe("main", () => {
+  beforeEach(() => {
+    // Only mock the write, so the example files can still be read.
+    fs.writeFileSync = jest.fn();
+    console.log = jest.fn(); // avoid console logs showing up
+  });
+
+  test("generates types for all .scss files when the pattern is a directory", async () => {
+    const pattern = `${__dirname}`;
+
+    await main(pattern, {
+      watch: false,
+      exportType: "named"
+    });
+
+    // Three files should match but one is empty
+    expect(fs.writeFileSync).toBeCalledTimes(2);
+
+    expect(fs.writeFileSync).toBeCalledWith(
+      `${__dirname}/complex.scss.d.ts`,
+      "export const someStyles: string;\nexport const nestedClass: string;\nexport const nestedAnother: string;\n"
+    );
+    expect(fs.writeFileSync).toBeCalledWith(
+      `${__dirname}/style.scss.d.ts`,
+      "export const someClass: string;\n"
+    );
+  });
+});

lib/main.ts

@@ -3,7 +3,7 @@ import path from "path";
 
 import { watch, MainOptions, generate } from "./core";
 
-export const main = (pattern: string, options: MainOptions): void => {
+export const main = async (pattern: string, options: MainOptions) => {
   // When the provided pattern is a directory construct the proper glob to find
   // all .scss files within that directory. Also, add the directory to the
   // included paths so any imported with a path relative to the root of the
@@ -22,6 +22,6 @@ export const main = (pattern: string, options: MainOptions): void => {
   if (options.watch) {
     watch(pattern, options);
   } else {
-    generate(pattern, options);
+    await generate(pattern, options);
   }
 };