* test/api/*.vala: Renamed files that contained mock objects to *-mock.vala,
not *-test.vala.
* test/testcase.vala: Renamed to test-case.vala for consistency, remove
TestCase class from Gee package since that's really not true. Clean up
code for consistency.
* test/meson.build, test/CMakeLists.txt: Split TestCase compilation out
into a separate test lib.
This adds a check for malware spoofing of RFC 822 mailbox addresses such
as those found in Mailsploit, and if found only displays the email
address part and not the mailbox name part.
Part 1 of Mailsploit mitigation.
* src/engine/rfc822/rfc822-mailbox-address.vala (MailboxAddress): Add new
is_spoofed method to check if the mailbox address looks like it has
been spoofed. Add is_distinct method to determine if the name and the
label is the same. Do whitespace and non-printing character stripping
when generating display versions of the mailbox address, rename methods
to make it more obvious what they do and update call sites. Add unit
tests to cover all this.
* src/client/conversation-viewer/conversation-message.vala
(ConversationMessage): Check name is distinct and is not valid before
displaying it. Use new MailboxAddress methods for getting display
versions of the address, to ensure we get the stripped versions of the
addresses.
* src/client/conversation-list/formatted-conversation-data.vala
(ParticipantDisplay): Ensure full addresses are always HTML-markup
escaped before displaying them as markup, to avoid dropping "<address>"
values as invalid HTML. Always show the full address if an address is
invalid.
* src/engine/util/util-string.vala (reduce_whitespace): Strip not only
whitespace but also non-printing characters. Add unit tests.
