feat: unit tests for utils (#92)

* init

* get unit test working for course.ts file

* added some other tests

* tests halfway + change config to accomodate js files

* utility functions tests done

* fix: config file + miscellaneous fixes

* fix: prepare script

* fix lock file

---------

Co-authored-by: Rotimi Best <best@classroomio.com>

apps/dashboard/src/lib/utils/functions/string.spec.ts

@@ -0,0 +1,28 @@
+import { capitalizeFirstLetter } from './string';
+
+describe('capitalize first letter', () => {
+  test('should return the same string with the first letter capitalized', () => {
+    const result = capitalizeFirstLetter('classroom');
+    expect(result).toEqual('Classroom');
+  });
+
+  test('should return an empty string when given an empty string', () => {
+    const result = capitalizeFirstLetter('');
+    expect(result).toEqual('');
+  });
+
+  test('should return the same string when given a string with all uppercase letters', () => {
+    const result = capitalizeFirstLetter('UPPERCASE');
+    expect(result).toEqual('UPPERCASE');
+  });
+
+  test('should return the same string when given a string with a non-alphabetical first character', () => {
+    const result = capitalizeFirstLetter('123abc');
+    expect(result).toEqual('123abc');
+  });
+
+  test('should return the first letter of the first word capitalized when given a sentence', () => {
+    const result = capitalizeFirstLetter('classroomio is an open source project');
+    expect(result).toEqual('Classroomio is an open source project');
+  });
+});