chore: add tests the @halvaradop/tailwindcss-core package

package.json

@@ -11,8 +11,8 @@
     "build:ci": "npm run build:core && npm run build",
     "format": "prettier --cache --write .",
     "format:check": "prettier --cache --check .",
-    "test": "turbo test --filter=!@halvaradop/tailwindcss-core",
-    "test:watch": "turbo test:watch --parallel --filter=!@halvaradop/tailwindcss-core",
+    "test": "turbo test --parallel",
+    "test:watch": "turbo test:watch --parallel",
     "test:coverage": "vitest --coverage"
   },
   "publishConfig": {

packages/tailwindcss-core/test/index.test.ts

@@ -0,0 +1,32 @@
+import { describe, test, expect } from "vitest"
+import { extractClasses } from "../src/generate-classes"
+
+/**
+ * Provide a mock implementation of the extractClasses function with an
+ * empty plugin. The implementation is responsible for setting up the
+ * plugin.
+ */
+const generateClasses = extractClasses({
+    config: {},
+    handler: () => {},
+})
+
+describe("Extract classes from tailwindcss", () => {
+    test("Extract classes without provided HTML content", async () => {
+        const html = ``
+        const css = await generateClasses(html)
+        expect(css).toMatch("")
+    })
+
+    test("Extract classes with provided empty HTML content", async () => {
+        const html = `<div class=""></div>`
+        const css = await generateClasses(html)
+        expect(css).toMatch("")
+    })
+
+    test("Extract classes with provided HTML content and Tailwindcss class", async () => {
+        const html = `<div class="text-lg"></div>`
+        const css = await generateClasses(html)
+        expect(css).toMatch(".text-lg{font-size:1.125rem;line-height:1.75rem}")
+    })
+})