tests: Add 'git-http' test.

* gnu/tests/version-control.scm (%git-nginx-configuration)
(%git-http-os, %test-git-http): New variables.
(run-git-http-test): New procedure.

tests: cgit: Add a file to the test repository.

* gnu/tests/version-control.scm (README-contents): New variable.
(%make-git-repository): Add a 'README' file to the repo.
(%test-repository-service): New variable.
(%cgit-os): Use it.
(run-cgit-test): Test /test/tree/README and /test/tree/does-not-exist.

tests: messaging: Enable Prosody DIGEST-MD5 auth mechanism.

GNU Freetalk doesn't support SCRAM-SHA-1.

* gnu/tests/messaging.scm (%test-prosody): Override default
disable-sasl-mechanisms value.

tests: install: Increase target-size.

1200 MiB are too small for a btrfs-root-os, thus let increase it.

* gnu/tests/install.scm (run-install): Increase target-size to 2200 MiB.
(%btrfs-root-installation-script): Increase my-root partition size to 2G.

tests: ssh: Make sure we can run executables from PATH.

* gnu/tests/ssh.scm (run-ssh-test): Add tests for running commands in system
and user profile.

tests: install: Estimate the installation system disk size.

1500 MiB are too small for a current system, thus let
system-disk-image estimate the required size.

* gnu/tests/install.scm: (run-install): Pass "#:disk-image-size
  'guess" to system-disk-image.

tests: databases: Add a simple test for MySQL.

Previously, the activation phase for this service caused some systems using it
to not boot. This test checks that it's possible to boot a system using it,
and at least start the service.

* gnu/tests/databases.scm (%mysql-os, %test-mysql): New variables.
  (run-mysql-test): New procedure.

Merge branch 'master' into staging

services: Add MongoDB.

* gnu/services/databases.scm (%default-mongodb-configuration-file,
  %mongodb-accounts, mongodb-service-type): New variables.
  (<mongodb-configuration>): New record type.
  (mongodb-activation, mongodb-shepherd-service): New procedures.
* gnu/tests/databases.scm (%test-mongodb): New variable.
* doc/guix.texi (Database Services): Add MongoDB documentation.

Merge branch 'master' into staging

gnu: services: Add cgit.

* gnu/services/version-control.scm
(<cgit-configuration-file>, <cgit-configuration>): New record types.
(cgit-configuration-robots-string, cgit-activation,
cgit-configuration-nginx-config): New procedures.
(%cgit-configuration-nginx, cgit-service-type): New variables.
* gnu/tests/version-control.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* doc/guix.texi (Version Control): Document the cgit service.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Merge branch 'master' into staging

tests: install: Switch to modifying the gc-root-service-type.

Fixes <https://bugs.gnu.org/28600>.
Fixes a regression introduced in
4e854b1814a9216ae7cc90aef4d82fd989a519c3.
Reported by Christopher Baines <mail@cbaines.net>.

* gnu/tests/install.scm (operating-system-with-gc-roots): Use
'simple-service' to extend GC-ROOT-SERVICE-TYPE instead of instantiating
it.

tests: mcron: Adjust use of 'wait-for-file'.

Fixes a regression introduced in
8bd5231485cdeb02078c4294badb3a1e7caa0fe0, whereby returning #<eof> would
no longer work (since #<eof> would be in the cdr of the result, and thus
it would not get converted to a string.)

* gnu/tests/base.scm (run-mcron-test)["root's job with command"]: Pass
  #:read to 'wait-for-file'.

Merge branch 'master' into staging

gnu: Add rsync service.

* doc/guix.texi (Networking Services): Add rsync service documentation.
* gnu/services/rsync.scm (<rsync-configuration>): New file.
* gnu/tests/rsync.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add new files.

Signed-off-by: Christopher Baines <mail@cbaines.net>

Merge branch 'master' into staging

tests: Fix incorrect use of 'file-append'.

Fixes a regression introduced in fbc7b1f12561159e0ec3f6459d336f95cf2ce503.

* gnu/tests/install.scm (run-install)[install]: Don't use 'file-append'
with a string as its first argument; use a gexp with 'string-append' instead.
Use a gexp instead of a list for "-cdrom IMG".

gnu: elogind: Use itself as the cgroup controller.

Fixes a regression introduced in
fa67d5654176b4b815832eaf259188e1486c65ab whereby elogind would fail to
start with:

  Cannot determine cgroup we are running in: No data available
  Out of memory.

thereby preventing log-in altogether.

* gnu/packages/freedesktop.scm (elogind)[arguments]: Pass
"--with-cgroup-controller=elogind".
* gnu/tests/desktop.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

marionette: 'wait-for-file' can be passed a read procedure.

* gnu/build/marionette.scm (wait-for-file): Add #:read parameter and
honor it.
* gnu/tests/base.scm (run-basic-test)["login on tty1"]: Use
'wait-for-file' instead of inline code.