Add line break for each line in a file

I cannot seem to get this to work..

I have a file which has about 100 lines, and there is no end of line (line break \n) at the end of each line, and this is causing problem when i paste them into an application.

the file looks like this

this is a test
that is a test
balblblablblhblbha
blabhlahblahbalbha

although they look normal, they don't have linebreaks at the end of each line.

Run through cat -vte to see if there are blanks or carriage returns to make apparent new lines.