Adding typescript support and unit tests

2 files changed, 32 insertions, 1 deletions

diff --git a/webAO/utils/__tests__/tryUrls.test.ts b/webAO/utils/__tests__/tryUrls.test.ts
new file mode 100644
index 0000000..444664e
--- /dev/null
+++ b/webAO/utils/__tests__/tryUrls.test.ts
@@ -0,0 +1,31 @@
+import fileExists from '../fileExists'
+import tryUrls from '../tryUrls';
+import transparentPng from '../../constants/transparentPng'
+jest.mock('../fileExists')
+
+const mockFileExists = fileExists as jest.MockedFunction<typeof fileExists>;
+
+describe('tryUrls', () => {
+    it('Should try multiple file extensions', async () => {
+        const url = "localhost/stoneddiscord/assets"
+        mockFileExists
+        .mockReturnValueOnce(Promise.resolve(false))
+        .mockReturnValueOnce(Promise.resolve(false))
+        .mockReturnValueOnce(Promise.resolve(false))
+        .mockReturnValueOnce(Promise.resolve(true))
+        const actual = await tryUrls(url)
+        const expected = 'localhost/stoneddiscord/assets.apng'
+        expect(actual).toBe(expected);
+        });
+        
+    it('Should return a transparent png if it cant find any assets', async () => {
+        const url = "localhost/stoneddiscord/assets"
+        mockFileExists
+        .mockReturnValue(Promise.resolve(false))
+        const actual = await tryUrls(url)
+        const expected = transparentPng
+        expect(actual).toBe(expected);
+        });
+})
+
+  
diff --git a/webAO/utils/tryUrls.js b/webAO/utils/tryUrls.ts
index db07ec7..14ef885 100644
--- a/webAO/utils/tryUrls.js
+++ b/webAO/utils/tryUrls.ts
@@ -6,7 +6,7 @@ const urlExtensionsToTry = [
     '.webp',
     '.apng'
 ]
-const tryUrls = async (url) => {
+const tryUrls = async (url: string) => {
     for (let i = 0; i < urlExtensionsToTry.length; i++) {
         const extension = urlExtensionsToTry[i]
         const fullFileUrl = url + extension