Tests missing

[MarkMichaelis]

We are missing quite a few tests and it would be great to get the remainder in place. Rather than one person take this issue, please create a new issue titled something like "Tests missing in Chapter X' and then assign it to yourself so we know which chapters are being investigated.

If there are chapters where there are no missing tests, please still create the issue but mark it as done. :)

[espence2003]

@MarkMichaelis would you still like this issue to be solved by creating issues for each chapter's tests as you stated above?

[espence2003]

Listings that need tests:

• - 4.44
• - 6.12
• - 6.42
• - 6.46
• - 8.12
• - 11.07
• - 12.06
• - 12.38
• - 13.09
• - 14.01
• - 15.05
• - 16.02
• - 16.06
• - 16.09
• - 18.01
• - 18.02
• - 18.23
• - 19.02
• - 19.08
• - 19.10
• - 20.10
• - 20.13
• - 21.05
• - 21.06
• - 21.07
• - 21.08
• - 21.09
• - 21.10
• - 4.15
• - 4.27
• - 6.1
• - 6.34
• - 6.49
• - 10.21
• - 11.06
• - 11.08
• - 12.15
• - 12.36
• - 12.37
• - 13.08
• - 13.12
• - 13.13
• - 13.16
• - 13.17
• - 13.18
• - 13.19
• - 13.21
• - 13.22
• - 13.23
• - 14.07
• - 14.08
• - 14.09
• - 14.10
• - 14.11
• - 15.01
• - 15.03
• - 15.04
• - 15.06
• - 15.07
• - 15.08
• - 15.09
• - 15.11
• - 15.15
• - 15.16
• - 15.17
• - 15.18
• - 15.21
• - 15.23
• - 15.29
• - 16.17
• - 17.02
• - 17.03
• - 17.04
• - 17.05
• - 17.06
• - 17.13
• - 17.15
• - 17.20
• - 18.06
• - 18.16
• - 18.24
• - 18.26
• - 18.27
• - 18.28
• - 19.06
• - 20.07
• - 21.1
• - 21.02
• - 21.04
• - 22.09
• - 22.10
• - 22.11
• - 22.12
• - 23.17
• - 23.18
• - 23.19