📐 Adds test for string byte formatting

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
+  });
+});

app/test/specs/result.spec.ts

@@ -0,0 +1,39 @@
+import { describe, it, expect } from 'vitest';
+import { Result } from '../../src/lib/utilities';
+
+describe('Result', () => {
+	it('should create a success result correctly', () => {
+		const successValue = 'Success value';
+		const result = Result.ok(successValue);
+
+		expect(result.isOk()).toBe(true);
+		expect(result.isErr()).toBe(false);
+		expect(result.inner).toBe(successValue);
+	});
+
+	it('should create an error result correctly', () => {
+		const errorMessage = 'Error message';
+		const result = Result.err(errorMessage);
+
+		expect(result.isOk()).toBe(false);
+		expect(result.isErr()).toBe(true);
+		expect(result.inner).toBe(errorMessage);
+	});
+
+	it('should type guard success and error results correctly', () => {
+		const successResult = Result.ok(123);
+		const errorResult = Result.err('Error');
+
+		if (successResult.isOk()) {
+			expect(typeof successResult.inner).toBe('number');
+		} else {
+			throw new Error('Expected successResult to be ok');
+		}
+
+		if (errorResult.isErr()) {
+			expect(typeof errorResult.inner).toBe('string');
+		} else {
+			throw new Error('Expected errorResult to be fail');
+		}
+	});
+});