Use new go test running syntax for complement. (#10488)

Updates CI and the helper script t ensures all tests are run (in parallel).

.github/workflows/tests.yml

@@ -344,7 +344,7 @@ jobs:
         working-directory: complement/dockerfiles
 
       # Run Complement
-      - run: go test -v -tags synapse_blacklist,msc2403,msc2946,msc3083 ./tests
+      - run: go test -v -tags synapse_blacklist,msc2403,msc2946,msc3083 ./tests/...
         env:
           COMPLEMENT_BASE_IMAGE: complement-synapse:latest
         working-directory: complement

changelog.d/10488.misc

@@ -0,0 +1 @@
+Update syntax used to run complement tests.

scripts-dev/complement.sh

@@ -65,4 +65,4 @@ if [[ -n "$1" ]]; then
 fi
 
 # Run the tests!
-go test -v -tags synapse_blacklist,msc2946,msc3083,msc2403 -count=1 $EXTRA_COMPLEMENT_ARGS ./tests
+go test -v -tags synapse_blacklist,msc2946,msc3083,msc2403 -count=1 $EXTRA_COMPLEMENT_ARGS ./tests/...