add mtt_filter input var to gh action

.github/workflows/test-action.yml

@@ -1,10 +1,7 @@
 name: test-action
-
 on: [push, pull_request]
-
 jobs:
   build:
-
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2

README.md

@@ -133,6 +133,7 @@ jobs:
 
 All parameters:
 * `modname` (required) the name of the mod
+* `mtt_filter` custom mods to filter for tests (`modname` is used if this is not set)
 * `enable_coverage` enables coverage stats
 * `enable_benchmarks` enables the benchmarks
 * `git_dependencies` list of dependencies (git repositories)

action.yml

@@ -4,6 +4,10 @@ inputs:
   modname:
     description: "the modname to test"
     required: true
+  mtt_filter:
+    description: "list of mods to test"
+    required: false
+    default: ""
   git_dependencies:
     description: "list of git-dependencies to download"
     required: false

entrypoint.sh

@@ -18,6 +18,13 @@ then
    git clone --depth=1 https://github.com/BuckarooBanzay/mtt
 fi
 
+# check for "mtt_filter" var, use modname if not set
+export mtt_filter=${INPUT_MODNAME}
+if [ -z "${INPUT_MTT_FILTER}" ]
+then
+    export mtt_filter=${INPUT_MTT_FILTER}
+fi
+
 # install game
 cd ${WORLDPATH}/
 git clone --recurse-submodules --depth=1 ${INPUT_GIT_GAME_REPO} game
@@ -28,7 +35,7 @@ ln -s /github/workspace ${WORLDPATH}/worldmods/${INPUT_MODNAME}
 # assemble minetest.conf
 cat <<EOF > /minetest.conf
 mg_name = ${INPUT_MAPGEN}
-mtt_filter = ${INPUT_MODNAME}
+mtt_filter = ${mtt_filter}
 mtt_enable = true
 secure.trusted_mods = mtt
 EOF