chore: add more tests to handlebar templates (#27)

Fun fact, I hate every template engine ever made. Another fun fact,
trying to remove items from an array in a pure way is _pure_ pain.

src/handlebars.test.ts

@@ -0,0 +1,31 @@
+import { readFile, mkdtemp, rm } from "fs/promises";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import Handlebars from "./handlebars";
+
+describe.concurrent("handlebars", () => {
+  it("can use an or helper function", async (ctx) => {
+    const template = Handlebars.compile(
+      "{{#or KEY_ONE KEY_TWO KEY_THREE}}helpers: true{{else}}helpers: false{{/or}}",
+    );
+    const result = template({
+      KEY_ONE: "false",
+      KEY_TWO: "false",
+      KEY_THREE: "true",
+    });
+
+    expect(result).toEqual("helpers: true");
+  });
+
+  it("can use an or helper inverse function", async (ctx) => {
+    const template = Handlebars.compile(
+      "{{#or KEY_ONE KEY_TWO KEY_THREE}}helpers: true{{else}}helpers: false{{/or}}",
+    );
+    const result = template({
+      KEY_ONE: undefined,
+      KEY_TWO: undefined,
+      KEY_THREE: undefined,
+    });
+
+    expect(result).toEqual("helpers: false");
+  });
+});

src/handlebars.ts

@@ -1,11 +1,11 @@
 import Handlebars from "handlebars";
 import isObject from "lodash/isObject";
-import { urlToHttpOptions } from "url";
 
 Handlebars.registerHelper("or", function (context, ...params) {
   const options = params[params.length - 1];
+  params.pop();
 
-  for (const value in params.splice(-1)) {
+  for (const value of params) {
     if (value) {
       return options.fn(context);
     }

src/templates.test.ts

@@ -62,19 +62,4 @@ describe.concurrent("templates", () => {
       `{\n  "keyOne": true,\n  "keyTwo": "valueTwo",\n  "keyThree": "valueThree"\n}\n`,
     );
   });
-
-  it<LocalTestContext>("can use handlebars-helpers functions", async (ctx) => {
-    await templateFiles({
-      ...ctx.config,
-      templateVariables: {
-        KEY_ONE: "false",
-        KEY_TWO: "false",
-        KEY_THREE: "true",
-      },
-    });
-    const path = join(ctx.config.fullPath, "helpers.txt");
-    const data = await readFile(path, "utf8");
-
-    expect(data).toEqual("helpers: true\n");
-  });
 });