Positive test cases and negative test cases

Question

what are positive test cases and negative test cases?

Upon googling about it i have found answers that are very confusing. Can anyone explain with

Answer 1

I dont know but I was somewhat dissatisfied with above answers. So here are my views upon this topic:

1. Positive testing is the testing for something that should happen, does happen.
2. Negative testing is the testing for something that should not happen, does not happen.

Lets have a scenario where we have two requirements: Requirements:

1. A text box to enter some characters.
2. A button to submit entered text to the server.
3. A message to be displayed when number of characters is less than 5. "Less than 5 characters".
4. A message to be displayed when server accepts text submitted. "Text accepted".

Now, a positive scenario would be:

1. Enter "abcdef" in the text box.
2. Click on submit button.
3. "Text Accepted" must be displayed.

On the other hand, a negative scenario would be:

1. Enter "abcd" in the text box.
2. Click on submit button.
3. "Text Accepted" must not be displayed.