Add whitespace in tests.
Merge topic 'add-whitespace' into next

9b0116e Add whitespace in tests.
Add whitespace after colons in error messages.
Merge topic 'add-whitespace' into next

c693a87 Add whitespace after colons in error messages.
Fix style.
Merge topic 'add-whitespace' into next

e18603a Fix style.
Add whitespace after colons in error messages.
Merge topic 'add-whitespace' into next

2331b57 Add whitespace after colons in error messages.