Overhaul the test-runner entrypoint for one file

Make sure docker is installed in our custom action

.github/actions/test/action.yml

@@ -27,8 +27,14 @@ runs:
       with:
         tags: ${{ inputs.runner-image }}:latest
         push: false
+        load: true
 
-    - shell: bash
+    - name: Ensure docker is installed in the container
+      shell: bash
+      run: apt-get update -y && apt-get install docker.io -y
+
+    - name: Run cargo 3ds test
+      shell: bash
       # Set a custom runner for `cargo test` commands to use.
       # Use ${GITHUB_WORKSPACE} due to
       # https://github.com/actions/runner/issues/2058, which also means

docker/entrypoint.sh

@@ -1,50 +1,64 @@
 #!/bin/bash
 
-# Clean up child processes on exit: https://stackoverflow.com/a/2173421/14436105
-trap "pkill -P $$" EXIT INT TERM
-
-mkdir -p ~/.config/citra-emu
-cp /app/sdl2-config.ini ~/.config/citra-emu
-# For some reason, log file is only written when this dir already exists,
-# but it is only created after the first run of citra (our only run, in the container)
-mkdir -p ~/.local/share/citra-emu/
-
-ERRS=0
-# shellcheck disable=SC2068
-for EXE in $@; do
-    VIDEO_OUT="$(dirname "$EXE")/$(basename "$EXE" .elf)_capture.webm"
-
-    # colored logs would be nice, but we can always just grab the plaintext log file
-    xvfb-run citra \
-        --appimage-extract-and-run \
-        --dump-video="$VIDEO_OUT" \
-        "$EXE" \
-        &>/dev/null &
-    PID=$!
-
-    # Citra takes a little while to start up, so wait a little before we try to connect
-    sleep 3
-
-    arm-none-eabi-gdb --silent --batch-silent --command /app/test-runner.gdb "$EXE"
-    STATUS=$?
-    if [ $STATUS -ne 0 ]; then
-        echo >&2 "FAILED (exit status $STATUS): $EXE"
-        ERRS=$(( ERRS + 1 ))
-    fi
+set -x
 
-    kill -INT $PID &>/dev/null
-    sleep 1
-    if kill -0 $PID &>/dev/null; then
-        kill -KILL $PID &>/dev/null
+function cleanup_jobs() {
+    # shellcheck disable=SC2317 # Unreachable because it's only used in trap
+    if [ -n "$(jobs -p)" ]; then
+        sleep 5 &
+        wait -n
+        # shellcheck disable=SC2046 # We want to expand jobs here and for `wait`
+        kill -9 $(jobs -p)
+        # shellcheck disable=SC2046
+        wait $(jobs -p) &>/dev/null
     fi
+}
+
+trap cleanup_jobs EXIT
+
+EXE_ELF=$1
+EXE_3DSX="$(dirname "$EXE")/$(basename "$EXE" .elf).3dsx"
+
+EXE_TO_RUN="$EXE_ELF"
+if [ -f "$EXE_3DSX" ]; then
+    echo >&2 "Found $(basename "$EXE_3DSX"), it will be run instead of $(basename "$EXE_ELF")"
+    EXE_TO_RUN="$EXE_3DSX"
+fi
+
+VIDEO_OUT="$(dirname "$EXE_ELF")/$(basename "$EXE_ELF" .elf)_capture.webm"
+
+CITRA_LOG_DIR=~/.local/share/citra-emu/log
+CITRA_OUT="$CITRA_LOG_DIR/citra_output.txt"
+
+xvfb-run --auto-servernum \
+    citra \
+    --appimage-extract-and-run \
+    --dump-video="$VIDEO_OUT" \
+    "$EXE_TO_RUN" \
+    &>"$CITRA_OUT" &
+CITRA_PID=$!
+
+# Citra takes a little while to start up, so wait a little before we try to connect
+sleep 5
+
+arm-none-eabi-gdb --silent --batch-silent --command /app/test-runner.gdb "$EXE_ELF"
+STATUS=$?
+
+kill $CITRA_PID
+cleanup_jobs
+
+CITRA_LOG="$CITRA_LOG_DIR/citra_log.txt"
 
-    CITRA_LOG=~/.local/share/citra-emu/log/citra_log.txt
-    CITRA_LOG_OUT="$(dirname "$EXE")/$(basename "$EXE" .elf)_citra_log.txt"
-    if test -f "$CITRA_LOG"; then
-        cp "$CITRA_LOG" "$CITRA_LOG_OUT"
+for f in "$CITRA_LOG" "$CITRA_OUT"; do
+    OUT="$(dirname "$EXE_ELF")/$(basename "$EXE_ELF" .elf)_$(basename "$f")"
+    if test -f "$f"; then
+        cp "$f" "$OUT"
+        if [ $STATUS -ne 0 ]; then
+            echo >&2 "$(basename $f) copied to $OUT"
+        fi
     else
-        echo "WARNING: citra log not found"
+        echo >&2 "WARNING: $(basename "$f") not found"
     fi
 done
 
-exit $ERRS
+exit $STATUS