Add the test runner to every exercise

bin/update_test_runner

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+self=$(readlink -e "$0")
+bin=${self%/*}
+
+# shellcheck disable=SC1091
+. "${bin}/utils.bash"
+
+content=$(curl -s https://raw.githubusercontent.com/exercism/gdscript-test-runner/refs/heads/main/bin/test_runner.gd)
+readarray -t exercises < <( active_exercises )
+for exercise in "${exercises[@]}"; do
+    write_test_runner "${exercise}" "${content}"
+done

bin/utils.bash

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+self=$(readlink -e "$0")
+bin=${self%/*}
+REPO_ROOT=$(git -C "${bin}" rev-parse --show-toplevel)
+readonly REPO_ROOT
+
+active_exercises () {
+    jq -r '
+        .exercises |
+        to_entries |
+        map(
+            select(.key != "foregone") |
+            .key as $key |
+            .value |
+            map(
+                select(.status != "deprecated") |
+                "exercises/\($key)/\(.slug)"
+            )
+        ) |
+        add |
+        sort |
+        .[]
+    ' "${REPO_ROOT}/config.json"
+}
+
+test_script_content() {
+    printf '#!/usr/bin/env bash\n'
+    printf '\n'
+    # shellcheck disable=SC2016
+    printf 'slug=${PWD##*/}\n'
+    # shellcheck disable=SC2016
+    printf '[[ -f "${slug//-/_}.gd" ]] || die "Error! solution file is missing"\n'
+    # shellcheck disable=SC2016
+    printf '[[ -f "${slug//-/_}_test.gd" ]] || die "Error! test file is missing"\n'
+    # shellcheck disable=SC2016
+    printf 'exec godot --headless --script ./lib/test_runner.gd -- "${PWD}"\n'
+}
+
+write_test_runner () {
+    local exercise="$1"
+    local content
+    if (( $# == 2 )); then
+        content="$2"
+    else
+        content=$(curl -s https://raw.githubusercontent.com/exercism/gdscript-test-runner/refs/heads/main/bin/test_runner.gd)
+    fi
+    [[ -e "${exercise}/lib" ]] || mkdir "${exercise}/lib"
+    printf '%s\n' "${content}" > "${exercise}/lib/test_runner.gd"
+    test_script_content > "${exercise}/run_tests"
+    chmod 755 "${exercise}/run_tests"
+}

config.json

@@ -23,7 +23,9 @@
       "%{snake_slug}.gd"
     ],
     "test": [
-      "%{snake_slug}_test.gd"
+      "%{snake_slug}_test.gd",
+      "run_tests",
+      "lib/test_runner.gd"
     ],
     "example": [
       ".meta/example.gd"

exercises/practice/allergies/.meta/config.json

@@ -7,7 +7,9 @@
       "allergies.gd"
     ],
     "test": [
-      "allergies_test.gd"
+      "allergies_test.gd",
+      "run_tests",
+      "lib/test_runner.gd"
     ],
     "example": [
       ".meta/example.gd"