diff --git a/prettier/configuration/jest.config.cjs b/prettier/configuration/jest.config.cjs
deleted file mode 100644
index f3cf9d6..0000000
--- a/prettier/configuration/jest.config.cjs
+++ /dev/null
@@ -1,8 +0,0 @@
-module.exports = {
-  preset: "ts-jest",
-  setupFilesAfterEnv: ["./configuration/run_spec.js"],
-  testEnvironment: "node",
-  testRegex: "run_tests.js$",
-  rootDir: "..",
-  transform: {},
-};
diff --git a/prettier/configuration/raw-serializer.js b/prettier/configuration/raw-serializer.js
deleted file mode 100644
index 5c44edb..0000000
--- a/prettier/configuration/raw-serializer.js
+++ /dev/null
@@ -1,17 +0,0 @@
-// source: https://github.com/prettier/prettier/blob/ee2839bacbf6a52d004fa2f0373b732f6f191ccc/tests_config/raw-serializer.js
-"use strict";
-
-const RAW = Symbol.for("raw");
-
-module.exports = {
-  print(val) {
-    return val[RAW];
-  },
-  test(val) {
-    return (
-      val &&
-      Object.prototype.hasOwnProperty.call(val, RAW) &&
-      typeof val[RAW] === "string"
-    );
-  },
-};
diff --git a/prettier/configuration/run_spec.js b/prettier/configuration/run_spec.js
deleted file mode 100644
index 3f38fcd..0000000
--- a/prettier/configuration/run_spec.js
+++ /dev/null
@@ -1,117 +0,0 @@
-// source: https://github.com/prettier/prettier/blob/ee2839bacbf6a52d004fa2f0373b732f6f191ccc/tests_config/run_spec.js
-"use strict";
-
-import fs from "fs";
-import path from "path";
-import prettier from "prettier";
-import { fileURLToPath } from "url";
-import { expect, test } from "@jest/globals";
-
-const testDirectory = path.dirname(fileURLToPath(import.meta.url));
-
-const RAW = Symbol.for("raw");
-expect.addSnapshotSerializer({
-  print(val) {
-    return val[RAW];
-  },
-  test(val) {
-    return (
-      val &&
-      Object.prototype.hasOwnProperty.call(val, RAW) &&
-      typeof val[RAW] === "string"
-    );
-  },
-});
-
-async function run_spec(dirname, options) {
-  fs.readdirSync(dirname).forEach(async (filename) => {
-    const filepath = `${dirname}${filename}`;
-    if (
-      path.extname(filename) !== ".snap" &&
-      fs.lstatSync(filepath).isFile() &&
-      filename[0] !== "." &&
-      filename !== "run_tests.js"
-    ) {
-      let rangeStart = 0;
-      let rangeEnd = Infinity;
-      let cursorOffset;
-      const source = read(filepath)
-        .replace(/\r\n/g, "\n")
-        .replace("<<<PRETTIER_RANGE_START>>>", (match, offset) => {
-          rangeStart = offset;
-          return "";
-        })
-        .replace("<<<PRETTIER_RANGE_END>>>", (match, offset) => {
-          rangeEnd = offset;
-          return "";
-        });
-
-      const input = source.replace("<|>", (match, offset) => {
-        cursorOffset = offset;
-        return "";
-      });
-
-      const mergedOptions = Object.assign(mergeDefaultOptions(options || {}), {
-        filepath,
-        rangeStart,
-        rangeEnd,
-        cursorOffset,
-        parser: "hubl",
-      });
-
-      const output = prettyprint(input, mergedOptions);
-
-      test(filename, async () => {
-        expect(
-          raw(
-            source +
-              "~".repeat(mergedOptions.printWidth) +
-              "\n" +
-              (await output),
-          ),
-        ).toMatchSnapshot();
-      });
-    }
-  });
-}
-
-async function prettyprint(src, options) {
-  const result = await prettier.formatWithCursor(src, options);
-  if (options.cursorOffset >= 0) {
-    result.formatted =
-      result.formatted.slice(0, result.cursorOffset) +
-      "<|>" +
-      result.formatted.slice(result.cursorOffset);
-  }
-  return result.formatted;
-}
-
-global.run_spec = run_spec;
-
-function read(filename) {
-  return fs.readFileSync(filename, "utf8");
-}
-
-/**
- * Wraps a string in a marker object that is used by `./raw-serializer.js` to
- * directly print that string in a snapshot without escaping all double quotes.
- * Backticks will still be escaped.
- */
-function raw(string) {
-  if (typeof string !== "string") {
-    throw new Error("Raw snapshots have to be strings.");
-  }
-  return { [Symbol.for("raw")]: string };
-}
-
-function mergeDefaultOptions(parserConfig) {
-  return Object.assign(
-    {
-      plugins: [
-        path.resolve(path.join(testDirectory, ".."), "dist/src/index.js"),
-      ],
-      printWidth: 80,
-    },
-    parserConfig,
-  );
-}
diff --git a/prettier/package.json b/prettier/package.json
index 47f7b39..8a8e17d 100644
--- a/prettier/package.json
+++ b/prettier/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "build": "rm -rf ./dist && tsc",
     "start": "nodemon --config ./configuration/nodemon.inline.json",
-    "test": "node --experimental-vm-modules ../node_modules/jest/bin/jest.js -c ./configuration/jest.config.cjs",
+    "test": "node --experimental-vm-modules ../node_modules/jest/bin/jest.js -c ./tests/configuration/jest.config.ts",
     "watch": "nodemon",
     "update-test": "tsc && jest -c ./configuration/jest.config.js --update-snapshot",
     "test-inline": "tsc && node ./src/test-inline.ts"
diff --git a/prettier/tests/__snapshots__/run_tests.js.snap b/prettier/tests/__snapshots__/run_tests.js.snap
index 2087c51..40449d1 100644
--- a/prettier/tests/__snapshots__/run_tests.js.snap
+++ b/prettier/tests/__snapshots__/run_tests.js.snap
@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`404.html 1`] = `
+exports[`formats 404.html correctly 1`] = `
 <!--
   templateType: error_page
   isAvailableForNewContent: true
@@ -70,7 +70,7 @@ exports[`404.html 1`] = `
 
 `;
 
-exports[`basic.html 1`] = `
+exports[`formats basic.html correctly 1`] = `
 <html><div>{% set x, s = "T" %}{% form "my_form" label="My Form", custom_form_html=None, no_title=False,title="", test1=None, test2=False,title="", test3=None, test4=False,title="" %}
 </div><img src="">
 {{- variable|upper -}}
@@ -109,7 +109,7 @@ NO
 
 `;
 
-exports[`blog-listing.html 1`] = `
+exports[`formats blog-listing.html correctly 1`] = `
 <!--
 templateType: blog_listing
 isAvailableForNewContent: true
@@ -252,7 +252,7 @@ screenshotPath: ../images/template-previews/blog-index.png
 
 `;
 
-exports[`blog-post.html 1`] = `
+exports[`formats blog-post.html correctly 1`] = `
 <!--
 templateType: blog_post
 isAvailableForNewContent: true
@@ -448,7 +448,7 @@ screenshotPath: ../images/template-previews/blog-post.png
 
 `;
 
-exports[`brackets.html 1`] = `
+exports[`formats brackets.html correctly 1`] = `
 {% set test_object = {
     "foo bar": "baz",
     "another test value": "blah",
@@ -478,7 +478,7 @@ exports[`brackets.html 1`] = `
 
 `;
 
-exports[`comments.html 1`] = `
+exports[`formats comments.html correctly 1`] = `
 <div>
   {# A comment #}
 </div>
@@ -506,7 +506,7 @@ exports[`comments.html 1`] = `
 
 `;
 
-exports[`complex.html 1`] = `
+exports[`formats complex.html correctly 1`] = `
 <!--
 templateType: none
 -->
@@ -600,7 +600,7 @@ templateType: none
 
 `;
 
-exports[`contact.html 1`] = `
+exports[`formats contact.html correctly 1`] = `
 <!--
   templateType: page
   isAvailableForNewContent: true
@@ -644,7 +644,7 @@ exports[`contact.html 1`] = `
 
 `;
 
-exports[`css.html 1`] = `
+exports[`formats css.html correctly 1`] = `
 {# Module styles #}
 
 {% require_css %}
@@ -799,7 +799,7 @@ border-radius: {{ module.styles.active.corner.radius ~ "px" }};
 
 `;
 
-exports[`for.html 1`] = `
+exports[`formats for.html correctly 1`] = `
 {% for key, val in request.query_dict.items() %}
 {{ key }}:{{ val }}
 {% endfor %}
@@ -810,7 +810,7 @@ exports[`for.html 1`] = `
 
 `;
 
-exports[`home.html 1`] = `
+exports[`formats home.html correctly 1`] = `
 <!--
   templateType: page
   isAvailableForNewContent: true
@@ -939,7 +939,7 @@ exports[`home.html 1`] = `
 
 `;
 
-exports[`hubdb.html 1`] = `
+exports[`formats hubdb.html correctly 1`] = `
 <!--
 templateType: page
 isAvailableForNewContent: false
@@ -1187,7 +1187,7 @@ screenshotPath: ../images/template-previews/hubdb.png
 
 `;
 
-exports[`if.html 1`] = `
+exports[`formats if.html correctly 1`] = `
 <div class="{% if true %}foo{% endif %}">
   Content
 </div>
@@ -1226,7 +1226,7 @@ Text that should get indented
 
 `;
 
-exports[`json.html 1`] = `
+exports[`formats json.html correctly 1`] = `
 {% module_attribute "social_link" is_json=True %}
 [{"social_account":"facebook-f", "social_account":"linkedin-f"},{"social_account":"twitter", "social_account":"instagram"}]
 {% end_module_attribute %}
@@ -1240,7 +1240,7 @@ exports[`json.html 1`] = `
 
 `;
 
-exports[`landing-page.html 1`] = `
+exports[`formats landing-page.html correctly 1`] = `
 <!--
   templateType: page
   isAvailableForNewContent: true
@@ -1318,7 +1318,7 @@ exports[`landing-page.html 1`] = `
 
 `;
 
-exports[`membership-login.html 1`] = `
+exports[`formats membership-login.html correctly 1`] = `
 <!--
   templateType: membership_login_page
   isAvailableForNewContent: true
@@ -1406,7 +1406,7 @@ exports[`membership-login.html 1`] = `
 
 `;
 
-exports[`minimal_nested.html 1`] = `
+exports[`formats minimal_nested.html correctly 1`] = `
 <div class="what">
 {% dnd_column %}
 {% dnd_row %}
@@ -1435,7 +1435,7 @@ exports[`minimal_nested.html 1`] = `
 
 `;
 
-exports[`misc.html 1`] = `
+exports[`formats misc.html correctly 1`] = `
 {% if sky != 'blue' %}
 Clouds
 {% endif %}
@@ -1835,7 +1835,7 @@ What is this element?
 
 `;
 
-exports[`nestedHtmlTags.html 1`] = `
+exports[`formats nestedHtmlTags.html correctly 1`] = `
   {% require_css %}
     <style>
       .list-wrapper {{ tagVariable }} {
@@ -1864,7 +1864,7 @@ exports[`nestedHtmlTags.html 1`] = `
 
 `;
 
-exports[`pre.html 1`] = `
+exports[`formats pre.html correctly 1`] = `
 {% block x %}
 <div>
   <pre>
@@ -1969,7 +1969,7 @@ exports[`pre.html 1`] = `
 
 `;
 
-exports[`qatest.html 1`] = `
+exports[`formats qatest.html correctly 1`] = `
 <!--
   templateType: page
   isAvailableForNewContent: false
@@ -3257,7 +3257,7 @@ exports[`qatest.html 1`] = `
 
 `;
 
-exports[`set.html 1`] = `
+exports[`formats set.html correctly 1`] = `
   {% set my_string = "my value" 
   %}
 {% set my_var = 
@@ -3329,7 +3329,7 @@ a_var %}
 
 `;
 
-exports[`tags.html 1`] = `
+exports[`formats tags.html correctly 1`] = `
 {% extends "custom/page/web_page_basic/my_template.html" %}
 {% block my_sidebar %}
    <!--Content that will render within a block of the same name in the parent template-->
@@ -4338,7 +4338,7 @@ This is a simple dialog rendered by using a macro and a call block.
 
 `;
 
-exports[`ternary.html 1`] = `
+exports[`formats ternary.html correctly 1`] = `
 {{ "x" == 0 ? "hello" : "bye" }}
 
 {% set x = blue === red ? yellow : orange %}
@@ -4361,7 +4361,7 @@ exports[`ternary.html 1`] = `
 
 `;
 
-exports[`website-header.html 1`] = `
+exports[`formats website-header.html correctly 1`] = `
 <!--
   templateType: global_partial
   label: Website header
@@ -4531,7 +4531,7 @@ exports[`website-header.html 1`] = `
 
 `;
 
-exports[`whitespace.html 1`] = `
+exports[`formats whitespace.html correctly 1`] = `
 {{- foo }}
 {{- bar -}}
 {{ baz -}}
diff --git a/prettier/tests/configuration/jest.config.ts b/prettier/tests/configuration/jest.config.ts
new file mode 100644
index 0000000..da7174a
--- /dev/null
+++ b/prettier/tests/configuration/jest.config.ts
@@ -0,0 +1,12 @@
+import type { Config } from "jest";
+
+const config: Config = {
+  preset: "ts-jest",
+  setupFilesAfterEnv: ["./configuration/run_spec.ts"],
+  testEnvironment: "node",
+  testRegex: "run_tests.js$",
+  rootDir: "..",
+  transform: {},
+};
+
+export default config;
diff --git a/prettier/tests/configuration/run_spec.ts b/prettier/tests/configuration/run_spec.ts
new file mode 100644
index 0000000..cf6040e
--- /dev/null
+++ b/prettier/tests/configuration/run_spec.ts
@@ -0,0 +1,135 @@
+// source: https://github.com/prettier/prettier/blob/ee2839bacbf6a52d004fa2f0373b732f6f191ccc/tests_config/run_spec.js
+"use strict";
+
+import fs from "fs";
+import path from "path";
+import prettier, { ParserOptions } from "prettier";
+import { expect, it, describe } from "@jest/globals";
+
+type TestObject = {
+  fileName: string;
+  dirName: string;
+  source: string;
+  input: string;
+  mergedOptions: ParserOptions;
+};
+
+const RAW = Symbol.for("raw");
+expect.addSnapshotSerializer({
+  print(val: unknown) {
+    return (val as Record<symbol, string>)[RAW];
+  },
+  test(val: Record<symbol, string>) {
+    return (
+      val &&
+      Object.prototype.hasOwnProperty.call(val, RAW) &&
+      typeof val[RAW] === "string"
+    );
+  },
+});
+
+function createTestObject(
+  dirName: string,
+  fileName: string,
+  options: ParserOptions,
+): TestObject | undefined {
+  const filePath = path.join(dirName, fileName);
+  const isValidTestFile =
+    path.extname(fileName) !== ".snap" &&
+    fs.lstatSync(filePath).isFile() &&
+    fileName[0] !== "." &&
+    fileName !== "run_tests.js";
+
+  if (!isValidTestFile) return undefined;
+
+  let rangeStart = 0;
+  let rangeEnd = Infinity;
+  let cursorOffset;
+  const source = fs
+    .readFileSync(filePath, "utf-8")
+    .replace(/\r\n/g, "\n")
+    .replace("<<<PRETTIER_RANGE_START>>>", (_, offset) => {
+      rangeStart = offset;
+      return "";
+    })
+    .replace("<<<PRETTIER_RANGE_END>>>", (_, offset) => {
+      rangeEnd = offset;
+      return "";
+    });
+
+  const input = source.replace("<|>", (_, offset) => {
+    cursorOffset = offset;
+    return "";
+  });
+
+  const mergedOptions = Object.assign(mergeDefaultOptions(options || {}), {
+    filePath,
+    rangeStart,
+    rangeEnd,
+    cursorOffset,
+    parser: "hubl",
+  });
+
+  return {
+    fileName,
+    dirName,
+    source,
+    input,
+    mergedOptions,
+  };
+}
+
+async function run_spec(dirName, options) {
+  const testObjects = fs
+    .readdirSync(dirName)
+    .map((fileName) => createTestObject(dirName, fileName, options))
+    .filter((testObj) => testObj !== undefined) as TestObject[];
+
+  testObjects.forEach(async (testObj) => {
+    const { fileName, source, input, mergedOptions } = testObj;
+    it(`formats ${fileName} correctly`, async () => {
+      const output = await prettyprint(input, mergedOptions);
+      const snapshot = raw(
+        source + "~".repeat(mergedOptions.printWidth) + "\n" + output,
+      );
+      expect(snapshot).toMatchSnapshot();
+    });
+  });
+}
+
+async function prettyprint(src, options) {
+  const result = await prettier.formatWithCursor(src, options);
+  if (options.cursorOffset >= 0) {
+    result.formatted =
+      result.formatted.slice(0, result.cursorOffset) +
+      "<|>" +
+      result.formatted.slice(result.cursorOffset);
+  }
+  return result.formatted;
+}
+
+global.run_spec = run_spec;
+
+/**
+ * Wraps a string in a marker object that is used by `./raw-serializer.js` to
+ * directly print that string in a snapshot without escaping all double quotes.
+ * Backticks will still be escaped.
+ */
+function raw(string) {
+  if (typeof string !== "string") {
+    throw new Error("Raw snapshots have to be strings.");
+  }
+  return { [Symbol.for("raw")]: string };
+}
+
+function mergeDefaultOptions(parserConfig) {
+  return Object.assign(
+    {
+      plugins: [
+        path.resolve(path.join(__dirname, "../.."), "dist/src/index.js"),
+      ],
+      printWidth: 80,
+    },
+    parserConfig,
+  );
+}