search by student id : null input id- RED
search student id test : null input Green
student search id test: letters input-RED
search student id test: letters input-Green
search sutdent id test:short id length:RED
search student id test: short id length-green
student search id test:longer id length-RED
search student id :longer id input-Green
search by course code: null input-RED
serch student by course code: null input-Green
search by course code : letters input -RED
search by course code: letters input -Green
search by date test: null input-RED
search by date test: null input -green
search by date test: null input -Green
search by date test: format input -Red
(the last 2 commits was over "letters input")
search by date test: format input (there are 2 dots)-Greeen
search by date test: format input: Green