add e2e testing (#167)

Reviewed-on: #167

linux/nix/e2e.sh

@@ -0,0 +1,77 @@
+# shellcheck shell=bash
+
+files=()
+flutter_args=()
+for arg in "$@"; do
+    if [[ "$arg" == *.dart ]]; then files+=("$arg"); else flutter_args+=("$arg"); fi
+done
+if [[ ${#files[@]} -eq 0 ]]; then files=(integration_test/*_test.dart); fi
+
+homeserver="http://localhost:8448"
+
+if curl -s -o /dev/null "$homeserver"; then
+    echo "Something is already using port 8448, like another e2e run." >&2
+    exit 1
+fi
+
+work="$(mktemp -d)"
+# shellcheck disable=SC2329 # Run by the trap
+cleanup() {
+    [[ -n "${server_pid:-}" ]] && kill "$server_pid" 2>/dev/null && wait "$server_pid" 2>/dev/null
+    rm -rf "$work"
+}
+trap cleanup EXIT
+
+mkdir -p "$work/db"
+cat > "$work/continuwuity.toml" <<EOF
+[global]
+server_name = "localhost"
+database_path = "$work/db"
+address = ["127.0.0.1", "::1"]
+port = 8448
+
+[global.well_known]
+client = "$homeserver"
+EOF
+
+users=(alice bob carol dave)
+create_users=()
+for user in "${users[@]}"; do
+    create_users+=(--execute "users create-user $user ${user}pass")
+done
+
+echo "Starting Continuwuity (log: $work/continuwuity.log)..."
+conduwuit -c "$work/continuwuity.toml" "${create_users[@]}" \
+    > "$work/continuwuity.log" 2>&1 &
+server_pid=$!
+
+all_can_log_in() {
+    for user in "${users[@]}"; do
+        curl -sf -XPOST "$homeserver/_matrix/client/v3/login" \
+            -d "{\"type\":\"m.login.password\",\"identifier\":{\"type\":\"m.id.user\",\"user\":\"$user\"},\"password\":\"${user}pass\"}" \
+            > /dev/null || return 1
+    done
+}
+
+# Wait until login succeeds, otherwise you might try to log in before the account is created
+attempts=60
+until all_can_log_in; do
+    kill -0 "$server_pid" 2>/dev/null || { cat "$work/continuwuity.log"; exit 1; }
+    (( --attempts )) || { echo "Test users weren't created" >&2; exit 1; }
+    sleep 0.5
+done
+
+GOCACHE="$(go env GOCACHE)"
+export GOCACHE
+
+status=0
+for file in "${files[@]}"; do
+    name="$(basename "$file" .dart)"
+    mkdir -p "$work/$name/data" "$work/$name/cache"
+    XDG_DATA_HOME="$work/$name/data" XDG_CACHE_HOME="$work/$name/cache" \
+        dbus-run-session -- \
+        flutter test "$file" -d linux \
+        --dart-define="NEXUS_E2E_HOMESERVER=$homeserver" "${flutter_args[@]}" ||
+        status=$?
+done
+exit "$status"