Add tests for template tags

Add failing tests for extracting selectors from HTML tags under
`<template>` tags.

__tests__/data.js

@@ -18,3 +18,37 @@ export const TEST_1_TAG = ["html", "head", "title", "body", "div", "a", "input"]
 export const TEST_1_CLASS = ["test-container", "test-footer", "a-link"]
 
 export const TEST_1_ID = ["a-link", "blo"]
+
+export const TEST_2_CONTENT = `
+<template>
+    <div id="app">
+        <div class="test-container">Well</div>
+        <div class="test-footer" id="an-id"></div>
+        <a href="#" id="a-link" class="a-link"></a>
+        <input id="blo" type="text" disabled/>
+    </div>
+</template>
+
+<script>
+export default {
+    name: 'its-just-a-test'
+}
+</script>
+
+<style>
+    .test-container {
+        color: darkgray;
+        text-align: center;
+    }
+
+    .test-footer {
+        font-weight: bold;
+    }
+</style>
+`
+
+export const TEST_2_TAG = ["div", "a", "input"]
+
+export const TEST_2_CLASS = ["test-container", "test-footer", "a-link"]
+
+export const TEST_2_ID = ["a-link", "blo"]

__tests__/index.js

@@ -1,5 +1,6 @@
 import purgehtml from "./../index.js"
 import { TEST_1_CONTENT, TEST_1_TAG, TEST_1_CLASS, TEST_1_ID } from "./data"
+import { TEST_2_CONTENT, TEST_2_TAG, TEST_2_CLASS, TEST_2_ID } from "./data"
 
 describe("purgehtml", () => {
     it("finds tag selectors", () => {
@@ -30,4 +31,35 @@ describe("purgehtml", () => {
             expect(received.includes(item)).toBe(true)
         }
     })
+
+    describe("from a template tag", () => {
+        it("finds tag selectors", () => {
+            const received = purgehtml.extract(TEST_2_CONTENT)
+            for (let item of TEST_2_TAG) {
+                expect(received.includes(item)).toBe(true)
+            }
+        })
+
+        it("finds classes selectors", () => {
+            const received = purgehtml.extract(TEST_2_CONTENT)
+            for (let item of TEST_2_CLASS) {
+                expect(received.includes(item)).toBe(true)
+            }
+        })
+
+        it("finds id selectors", () => {
+            const received = purgehtml.extract(TEST_2_CONTENT)
+            for (let item of TEST_2_ID) {
+                expect(received.includes(item)).toBe(true)
+            }
+        })
+
+        it("finds all selectors", () => {
+            const received = purgehtml.extract(TEST_2_CONTENT)
+            const selectors = [...TEST_2_TAG, ...TEST_2_CLASS, ...TEST_2_ID]
+            for (let item of selectors) {
+                expect(received.includes(item)).toBe(true)
+            }
+        })
+    })
 })