Skip to content

solution #572

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
aakash1sadhu wants to merge 1 commit into
base: main
Choose a base branch
from
Open

solution #572

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 16 additions & 0 deletions src/isIsogram.test.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,4 +6,20 @@ describe('isIsogram', () => {
it(`should be declared`, () => {
expect(isIsogram).toBeInstanceOf(Function);
});

it('should return true for a word without repeating letters', () => {
expect(isIsogram('playgrounds')).toBe(true);
});

it('should return true for an empty string', () => {
expect(isIsogram('')).toBe(true);
});

it('should return false for a word with repeating letters', () => {
expect(isIsogram('look')).toBe(false);
});

it('should return false for repeating letters in different cases', () => {
expect(isIsogram('Adam')).toBe(false);
});

@mateacademy-ai-mentor mateacademy-ai-mentor May 1, 2026

Copy link
Copy Markdown

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Missing test case: the task description explicitly shows isIsogram('Oops') === false as an example that should be tested. This verifies the function detects repeating letters like the double 'o' in 'Oops'.

});
Loading