tests: move to t, allow yath test from root

By moving the tests subdirectory to t, we gain the ability to run `yath
test` with no arguments from inside `nix develop` in the root of the
the repo.

(`nix develop` is necessary in order to set the proper env vars for
`yath` to find our test libraries.)

.gitignore

@@ -25,16 +25,16 @@ Makefile.in
 /doc/manual/images
 /doc/manual/manual.html
 /doc/manual/manual.pdf
-/tests/.bzr*
-/tests/.git*
-/tests/.hg*
-/tests/nix
-/tests/data
+/t/.bzr*
+/t/.git*
+/t/.hg*
+/t/nix
+/t/data
+/t/jobs/config.nix
 /inst
 hydra-config.h
 hydra-config.h.in
 result
-tests/jobs/config.nix
 outputs
 config
 stamp-h1

.yath.rc

@@ -0,0 +1,2 @@
+[test]
+-I=rel(t/lib)

Makefile.am

@@ -1,4 +1,4 @@
-SUBDIRS = src tests doc
+SUBDIRS = src t doc
 BOOTCLEAN_SUBDIRS = $(SUBDIRS)
 DIST_SUBDIRS      = $(SUBDIRS)
 EXTRA_DIST        = hydra-module.nix

configure.ac

@@ -70,8 +70,8 @@ AC_CONFIG_FILES([
   src/lib/Makefile
   src/root/Makefile
   src/script/Makefile
-  tests/Makefile
-  tests/jobs/config.nix
+  t/Makefile
+  t/jobs/config.nix
 ])
 
 AC_CONFIG_COMMANDS([executable-scripts], [])

flake.nix

@@ -320,12 +320,16 @@
             ] ++ lib.optionals stdenv.isLinux [ rpm dpkg cdrkit ] );
 
           shellHook = ''
+            pushd $(git rev-parse --show-toplevel) >/dev/null
+
             PATH=$(pwd)/src/hydra-evaluator:$(pwd)/src/script:$(pwd)/src/hydra-eval-jobs:$(pwd)/src/hydra-queue-runner:$PATH
             PERL5LIB=$(pwd)/src/lib:$PERL5LIB
-            export HYDRA_HOME="src/"
+            export HYDRA_HOME="$(pwd)/src/"
             mkdir -p .hydra-data
             export HYDRA_DATA="$(pwd)/.hydra-data"
             export HYDRA_DBI='dbi:Pg:dbname=hydra;host=localhost;port=64444'
+
+            popd >/dev/null
           '';
 
           preConfigure = "autoreconf -vfi";
@@ -416,7 +420,7 @@
                         su - hydra -c "hydra-create-user root --email-address 'alice@example.org' --password foobar --role admin"
                         mkdir /run/jobset /tmp/nix
                         chmod 755 /run/jobset /tmp/nix
-                        cp ${./tests/api-test.nix} /run/jobset/default.nix
+                        cp ${./t/api-test.nix} /run/jobset/default.nix
                         chmod 644 /run/jobset/default.nix
                         chown -R hydra /run/jobset /tmp/nix
                 """
@@ -428,7 +432,7 @@
 
                 # Run the API tests.
                 machine.succeed(
-                    "su - hydra -c 'perl -I ${pkgs.hydra.perlDeps}/lib/perl5/site_perl ${./tests/api-test.pl}' >&2"
+                    "su - hydra -c 'perl -I ${pkgs.hydra.perlDeps}/lib/perl5/site_perl ${./t/api-test.pl}' >&2"
                 )
               '';
         };
@@ -455,7 +459,7 @@
                       su - hydra -c "hydra-create-user root --email-address 'alice@example.org' --password foobar --role admin"
                       mkdir /run/jobset
                       chmod 755 /run/jobset
-                      cp ${./tests/api-test.nix} /run/jobset/default.nix
+                      cp ${./t/api-test.nix} /run/jobset/default.nix
                       chmod 644 /run/jobset/default.nix
                       chown -R hydra /run/jobset
               """
@@ -477,7 +481,7 @@
 
               # Setup the project and jobset
               machine.succeed(
-                  "su - hydra -c 'perl -I ${pkgs.hydra.perlDeps}/lib/perl5/site_perl ${./tests/setup-notifications-jobset.pl}' >&2"
+                  "su - hydra -c 'perl -I ${pkgs.hydra.perlDeps}/lib/perl5/site_perl ${./t/setup-notifications-jobset.pl}' >&2"
               )
 
               # Wait until hydra has build the job and