Avoid shell interpolation of re-run commands

[Sam-Killgallon]

Recently had a leaky test which looked like;

test "It returns `foo`"

Which gave a message from ci-queue;

cat <<EOF |
MyTest#it_returns_`foo`
MyTest#other_test
EOF
bundle exec minitest-queue --queue - run -Itest test/my_test.rb

When this message is copy-pasted into the terminal it interpolates foo, tries to run the command and substitute the output. It gives an error message

zsh: command not found: foo

and results in an invalid invocation because the test name is turned into

MyTest#it_returns_

Adding quotes to the heredoc avoids interpolation and makes the heredoc a literal instead https://www.gnu.org/software/bash/manual/bash.html#Here-Documents

The format of here-documents is:

[n]<<[-]word
here-document
delimiter

No parameter and variable expansion, command substitution, arithmetic expansion, or filename expansion is performed on word. If any part of word is quoted, the delimiter is the result of quote removal on word, and the lines in the here-document are not expanded. If word is unquoted, all lines of the here-document are subjected to parameter expansion, command substitution, and arithmetic expansion