diff --git a/app/test/specs/byteformat.spec.ts b/app/test/specs/byteformat.spec.ts
new file mode 100644
index 0000000..10898cf
--- /dev/null
+++ b/app/test/specs/byteformat.spec.ts
@@ -0,0 +1,28 @@
+import { describe, it, expect } from 'vitest';
+import { humanFileSize } from '../../src/lib/utilities';
+
+describe('humanFileSize', () => {
+  it('returns "0B" for 0 bytes', () => {
+    expect(humanFileSize(0)).toBe('0B');
+  });
+
+  it('returns the size in bytes correctly', () => {
+    expect(humanFileSize(500)).toBe('500B');
+  });
+
+  it('returns the size in kB correctly', () => {
+    expect(humanFileSize(1024)).toBe('1kB');
+  });
+
+  it('returns the size in MB correctly', () => {
+    expect(humanFileSize(1048576)).toBe('1MB'); // 1024 * 1024
+  });
+
+  it('returns the size in GB correctly', () => {
+    expect(humanFileSize(1073741824)).toBe('1GB'); // 1024 * 1024 * 1024
+  });
+
+  it('rounds to 2 decimal places correctly', () => {
+    expect(humanFileSize(1536)).toBe('1.5kB'); // 1024 + 512
+  });
+});
\ No newline at end of file
diff --git a/app/test/result.test.ts b/app/test/specs/result.spec.ts
similarity index 95%
rename from app/test/result.test.ts
rename to app/test/specs/result.spec.ts
index ee78ee6..eff37ad 100644
--- a/app/test/result.test.ts
+++ b/app/test/specs/result.spec.ts
@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { Result } from '../src/lib/utilities';
+import { Result } from '../../src/lib/utilities';
 
 describe('Result', () => {
 	it('should create a success result correctly', () => {