Passed a test in about_asserts.rb

Asserts pass if the first parameter is true and fail if it's false.

Asserts can have an optional second parameter giving useful information about the failed test.

Asserts can check values against their expected value.

The assert_equal method will provide the expected and actual values in the failure message, making it a better choice than assert expected == actual.

Occasionally I'll have to fill in values. Like I just did for the last 3 commits.

[#54146053]
Merge pull request #2 from ArGroves/54146053_about_asserts_master

Passed a test in about_asserts.rb

[Delivers #54146053]